EP1419879A1 - Beheizte Walze für eine Wellenpappemaschine - Google Patents

Beheizte Walze für eine Wellenpappemaschine Download PDF

Info

Publication number
EP1419879A1
EP1419879A1 EP03026107A EP03026107A EP1419879A1 EP 1419879 A1 EP1419879 A1 EP 1419879A1 EP 03026107 A EP03026107 A EP 03026107A EP 03026107 A EP03026107 A EP 03026107A EP 1419879 A1 EP1419879 A1 EP 1419879A1
Authority
EP
European Patent Office
Prior art keywords
shell
heating roll
paper web
heat
corrugator
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.)
Ceased
Application number
EP03026107A
Other languages
English (en)
French (fr)
Inventor
Hiroshi Paper& Printing Machinery Div. Ishibuchi
Takashi Paper& Printing Machinery Div. Nitta
Setsuo Paper& Printing Machinery Div. Suzuki
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.)
Mitsubishi Heavy Industries Machinery Systems Co Ltd
Original Assignee
Mitsubishi Heavy Industries 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Publication of EP1419879A1 publication Critical patent/EP1419879A1/de
Ceased legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/02—Drying on cylinders
    • D21F5/10—Removing condensate from the interior of the cylinders
    • 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
    • B31F1/2845—Details, e.g. provisions for drying, moistening, pressing
    • B31F1/285—Heating or drying equipment
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/02—Drying on cylinders
    • D21F5/021—Construction of the cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F5/00—Elements specially adapted for movement
    • F28F5/02—Rotary drums or rollers

Definitions

  • the present invention relates to a heating roll of a corrugator for heating paper web sheets in a production process in which conveying paper web sheets are stuck with each other to form a corrugated paper sheet.
  • FIGS. 10(a) and 10(b) are diagrams showing an example of a general arrangement of a heating roll which is used in a corrugator as a pre-heater, a corrugating roll, a pressure roll, a belt roll and so on for applying heat to a paper web sheet (single face corrugated paper sheet or a liner) before bonding is effected.
  • FIG. 10(a) is a schematic cross-section as viewed from its front face (as viewed from the sheet conveying direction) and
  • FIG. 10(b) is a cross-section taken along a line A1-A1 of the FIG. 10(a).
  • the heating roll (preheater roll) 110 shown in FIG. 10(a) is arranged to heat a paper web sheet while rotating in the conveying direction of the paper web sheet which is wound around the outer periphery thereof.
  • the heating roll includes a cylindrical shell 11 supplied with steam 2 into the inner space thereof for heating the paper web sheet and shafts 12a and 12b supported by a pair of bearings which are provided at both the end portions of the shell 11.
  • one shaft 12a is a pipe-like one and the steam 2 for heating the paper web sheet is supplied through the shaft 12a into the inner space of the shell 11.
  • a drain pipe 14 is inserted through the shaft 12a into the shell 11 so that condensate deriving from the steam (hereinafter referred to as drain) can be discharged from the shell 11 through the pipe 14 to the outside.
  • FIGS. 11(a) to 11(c) are schematic cross-sections of the heating roll as viewed from the side thereof. The mechanism of occurring the rimming water film will be briefly explained with reference to FIGS. 11(a) to 11(c). As shown in FIG.11(a), the drain 3 is left within the shell 11.
  • the drain 3 When the shell 11 rotates at a high rate, the high speed rotation will cause the strong centrifugal force, which makes the drain 3 take a state as illustrated in FIG. 11(b). Then, as shown in FIG. 11(c), the drain 3 is formed into a film (rimming water film) 3a covering the inner wall 11a of the shell 11 entirely.
  • the heat transfer between the steam 2 of the inner side of the rimming water film 3a (shell axis side) and the shell 11 is lowered, and the surface temperature of the shell 11 is lowered.
  • the temperature of the paper web sheet heated by the heating roll 110 is remarkably lowered as compared with a case in which the rimming water film 3a is not formed.
  • unsatisfactory adhesion of the paper web sheets may occur due to the insufficient heat application. Therefore, if the higher rate rotation is requested, addition of the heating roll becomes necessary to secure a predetermined heat to the paper web sheet.
  • a heating roller for suppressing the temperature lowering at the surface of a heating roller upon the rimming water film formation as described above although not for use in a corrugator, a heating roller for use in a paper machine having spoiler bars is disclosed in USP 3,217,426 (Reference 1) and USP 4,195,417 (Reference 2), for example. Description will be made hereinafter on the structure of the heating roller of Reference 2, in particular, with reference to FIG. 12.
  • a heating roller 210 a plurality of spoiler bars, each of which is elongated in the roll axis direction, are arrayed on the inner wall of the shell 211 in the circumferential direction with a predetermined interval interposed therebetween.
  • the spoiler bars 212 are made of magnet and hence fixed to the shell 211 as a magnetic material owing to the magnetic force thereof.
  • the thickness of the rimming water film becomes about three to five millimeters.
  • the aforesaid spoiler bar 212 causes turbulence to the rimming water film to bring about a turbulent flow so that heat transfer can be promoted between the drain and the roller inner wall.
  • lowering of the roller surface temperature can be suppressed even if the rimming water film is formed.
  • the high rate driving is more and more requested aiming at the improvement of productivity in recent years, and with this high rate driving, the time period of contact between the heating roller and the paper web sheet becomes relatively short. As a consequence, satisfactory suppression of the roller surface temperature lowering is not available by the conventional technology such as one described above in which the turbulent flow is caused in the rimming water film.
  • the present invention is made in view of the above aspect. Therefore, it is an object of the present invention to provide a heating roll of a corrugator which can effectively suppress the lowering of the paper web sheet heating temperature even when condensate of heating fluid forms a rimming liquid film.
  • a heating roll for use in a corrugator provided to face a conveying path of paper web sheet and for heating said paper web in a production process in which conveyed paper web sheets are stuck to each other to form a corrugated paper sheet
  • said heating roll of the corrugator characterized by comprising a shell having a cylindrical shape with a hollow, applied with heat by heat applying fluid supplied into said hollow, contacted with said paper web sheet at an outer periphery of said shell to heat said paper web sheet while rotating along said conveying path for conveying said paper web sheet; andapluralityof heat transferportions each of which is provided on an inner wall of said shell, and even if condensate of said fluid forms a liquid film covering said inner wall upon rotation of said shell, height of each of which is set so that said heat transfer portion projects inwardly toward the shell axis compared with said liquid film; wherein heat of said fluid transfers to said shell through said heat transfer portion even if said liquid film is formed.
  • the heat transfer portion can cause turbulent flow in the liquid film to promote the heat transfer from the condensate (liquid deriving from condensation of the heating fluid) to the shell.
  • heat of fluid inside the liquid film conducts to the shell through the heat transfer portions. Accordingly, the temperature of the outer periphery of the shell can be prevented from being lowered, and moreover the lowering of temperature at which the sheet is heated can be suppressed. Thus, it becomes possible to protect the paper web sheets from adhesion failure therebetween which will be effected in the subsequent production step.
  • the amount of heat applied to the sheet by a single unit of heating roll can be secured. Therefore, the number of heating roll units requested to provide in the production stage can be decreased as compared with that of a conventional heating roll arrangement.
  • the heat transfer portion is desirably fixed to the shell.
  • Each of said plurality of heat transfer portions may be a linear-shaped fin (which is elongated in the axial direction of said shell and whose height sufficiently larger than whose width in the circumferential direction of said shell), and a plurality of said linear-shaped fins may be provided on the inner wall of said shell with a predetermined interval interposed therebetween.
  • each of said fins may be divided into a plurality of fin portions arrayed in the axial direction of said shell with a space interposed therebetween at a predetermined axial position. Further, it is preferable that a ring-like member is attached to one end of said fin portion so that said ring-like member faces said space and takes an upright posture relative to said inner wall of said shell.
  • each of said plurality of heat transfer portions may be a ring-like fin (which is formed along the circumferential direction of said shell and whose height sufficiently larger than whose width in the axial direction of said shell), and a plurality of said ring-like fins maybe arrayed in the axial direction of said shell with a predetermined interval interposed therebetween.
  • each of said plurality of heat transfer portions maybe a projection (whose lengths in the axial direction and the circumferential direction of said shell are relatively small, respectively), and a plurality of said projections may be arrayed in the axial direction and the circumferential direction of said shell.
  • the heating roll is preferably provided with driving means for rotatively driving the shell.
  • the paper web sheet can be free from excessive tension in the conveying direction owing to the rotational drive of the shell by the driving means. Further, if the revolving rate of the heating roll is kept constant regardless of the conveying speed of the paper web sheet, it becomes possible to suppress the fluctuation in the heat transfer between the fluid and the shell.
  • the shell may be desirably divided into a plurality of units in the axial direction, and each of the units may be desirably supplied with the heating fluid independently, whereby an amount of heat applied to the sheet material can be adjusted for each unit.
  • the amount of heat applied to the paper web sheet can be varied in accordance with the posit ion of the sheet width direction (shell axial direction).
  • each of the plurality of units is equipped with driving means for rotatively driving the unit.
  • a heating roll for use in a corrugator provided to face a conveying path of paper web sheet and for heating said paper web in a production step in which conveyed paper web sheets are stuck to each other to form a corrugated paper sheet
  • said heating roll of the corrugator characterized by comprising a shell having a cylindrical shape with a hollow, applied with heat by heat applying fluid supplied into said hollow, contacted with said paper web sheet at an outer periphery of said shell to heat said paper web sheet, and rotating along said conveying path for conveying said paper web sheet; a plurality of heat transfer portions, each of which is provided on an inner wall of said shell so as to project toward the shell axis side, is elongated in the axial direction of said shell and is divided at a predetermined position in the axial direction of said shell.
  • the drain pipe is inserted into the shell so that the tip end thereof faces the inner wall of the shell at the space between the divided portions of the heat transfer portion.
  • the heat transfer portion extending in the shell axis direction is divided into the predetermined position in the shell axis direction, and the drain pipe is inserted into the shell so that the tip end thereof faces the inner wall of the shell at the space between the divided portions of the heat transfer portion. Therefore, the drain pipe can be free from interference with the heat transfer portion which rotates integrally with the shell, and the drain can be discharged from the shell.
  • FIGS. 1(a) to 1(c) are diagrams showing a heating roll of a corrugator as a first embodiment of the present invention.
  • FIG.1 (a) is a schematic cross-section as viewed from the front side thereof
  • FIG.1 (b) is a schematic diagram corresponding to the cross-section taken along a line A2 - A2 of FIG.1 (a) wherein the heating roll is placed in a halting state
  • FIG. 1 (c) is a schematic diagram corresponding to the cross-section taken along a line A2 - A2 of the FIG.1 (a) wherein the heating roll is placed in a rotating state.
  • Components corresponding to those described as the aforesaid conventional technology are attached with the same reference numerals and they will not be described in detail.
  • a heating roll 10 of the present embodiment is utilized as a preheater for pre-heating a paper web sheet ( single-faced corrugated paper sheet or a liner) before gluing, a corrugating roller and a pressure roller or a belt roller for use in a corrugator.
  • This heating roll 10 is comprised of a cylindrical shell 11 having a hollow and a pair of shaft portions 12a and 12b.
  • the shaft portion 12a is disposed at one end of the shell 11 and the shaft portion 12b is disposed at other end of the shell 11.
  • the shaft portion 12a and 12b are rotatively supported through bearings 13 respectively.
  • one shaft portion 12a is a pipe shaped one so that steam for heating the paper web sheet (fluid for heating) 2 can be supplied through the shaft portion 12a into the shell 11.
  • the shell 11 can heat the paper web sheet while rotating in the direction in which the paper web sheet wound around the shell 11 is conveyed.
  • a plurality of fin portions 15a and 15b each of which elongates in the shell axial direction (hereinafter sometimes referred to as a width direction or a CD direction), has a height dimension H sufficiently higher than the width (length along the shell circumferential direction) W and has a large ratio of surface to the volume thereof.
  • This heating roll 10 is different from the aforesaid conventional heating roll 110 and 210 in the above point.
  • the shell 11 can be regarded as one having on its inner wall 11a a plurality of elongated fins 15, eachof which is composed of the aforesaid pair of fin portions 15a and 15b arrayed along the CD direction with a predetermined space interposed therebetween, arrayed around the entire roll inner wall 11a with a predetermined interval placed in the roll circumferential direction. Further, each of the aforesaid elongated fins 15 can be regarded as one divided into a plurality of fin portions (in this case two fin portions) 15a, 15b at a predetermined position in the CD direction.
  • the fin portions 15a and 15b are integrally fixed to the inner wall 11a (so as to achieve intimate contact thereto) by welding.
  • FIG. 1(b) is a diagram showing the heating roll in a halting state.
  • Steam 2 supplied into the shell 11 is utilized for heating the paper web sheet running in contact with the outer periphery of the shell 11 and condensate of the steam 2 becomes drain 3.
  • the drain 3 forms a rimming water film (liquid film) 3a covering the entire inner wall 11a owing to a centrifugal force of the rotation.
  • Each of the fin portionsfins 15a and 15b is arranged to have the height sufficiently higher than the thickness t of the rimming water film 3a. That is, the tip end of each fin portions 15a and 15b can be projected above the rimming water film 3a so that the fin portions 15a and 15b can be reliably contacted to the saturated steam 2 inside the rimming water film 3a(on the side of the roll axis).
  • the rimming water film 3a placed between the fin portions 15a or between the fin portions 15b will be brought into a turbulent state owing to the sandwiching state of the fin portions 15a or 15b.
  • the heat conducting rate between the drain 3 and the fin portions 15a and 15b will be improved and the heat of the drain 3 can be effectively recovered.
  • the mounting pitch of the fin portions 15a and 15b along the roll circumferential direction is relatively wide for convenience of illustration. However, it is preferable that the sumof circumferential direction length of areas at which the fin portions 15a and 15b are mounted is longer than the sum of circumferential direction length of areas at which no fin is mounted.
  • the inner diameter Di of the shell 11 is set to 674mm and the rimming water film 3a will have a thickness t of about 0.5 to 1 mm.
  • the fin portions 15a and 15b are set to have the height H of 44mm (corresponding to 6.5% of the inner diameter Di of the shell 11).
  • the height H is set to be sufficiently high relative to the thickness t of the drain water film 3a.
  • the fin portions 15a, 15b are set to have a width W of 12mm in the roll circumferential direction.
  • the drain pipe 14 is inserted into the shell 11 so that the tip end thereof (drain suction opening) faces the inner wall 11a at a portion of the shell 11 between the fin portions 15a and 15b. Therefore, the drain pipe 14 can be free from interference with the fin portions 15a and 15b which will be rotated together with the shell 11.
  • the heating roll of the corrugator as the first embodiment of the present invention is constructed as described above. Therefore, the following effects and advantages can be expected.
  • the rimming water film 3a is formed on the shell inner wall 11a upon the high rate rotation of the heating roll 10, turbulent flow can be caused in the rimming water film 3a and the heat of the rimming water film 3a can be effectively transferred to the shell 11.
  • the fin portions 15a and 15b mounted on the inner wall 11a of the shell can effectively conduct the heat of the saturated steam 2 inside the rimming water film 3a to the shell 11. Therefore, the paper web sheet can be satisfactorily heated even when the heating roll is rotated at a high rate, the amount of heat to be applied to the paper web sheet can be secured without additionally providing the heating roll, and bonding the paper web sheets carried out in the subsequent production stage can be stably performed.
  • the fin portions 15a and 15b are integrally fixed to the shell inner wall 11a by welding, the heat transfer between the fins 15a, 15b and the shell 11 can be effectively performed.
  • FIGS. 2 (a) and 2(b) are diagrams showing a heating roll of a corrugator as a second embodiment of the present invention.
  • FIG.2 (a) is a schematic cross-section as viewed from the front side thereof
  • FIG. 2 (b) is a schematic diagram corresponding to the cross-section taken along a line A3 - A3 of FIG.2 (a) wherein the heating roll is placed in a rotating state.
  • Components corresponding to those described above are attached with the same reference numerals and they will not be described in detail.
  • the heating roll 10A of the present embodiment differs from the aforesaid heating roll 10 of the first embodiment shown in FIGS. 1(a) and 1(b) in that a dam ring 16a and 16b shaped into a ring-like member is intimately attached to the shell inner wall 11a.
  • the dam rings 16a and 16b are attached within the shell 11 so that they take a substantially upright posture (including a complete upright posture) relative to the shell inner wall 11a.
  • the dam rings 16a and 16b are attached to the inner wall 11a so that the rings can close the divided faces of fins 15. That is, the damring 16a is intimately attached to the end (divided face of fin 15) on the center side in the CD direction of the fin portion 15a which is disposed on the left side in FIG. 2 (a) and the dam ring 16b is intimately attached to the end (divided face of fin 15) on the center side in the CD direction of the fin portion 15b which is disposed on the right side in FIG. 2 (a).
  • the couple of straight fin portions 15a and 15b elongated in the CD direction are arrayed in the CD direction so that a space S is interposed therebetween at a predetermined position in the CD direction, the dam ring 16a is attached to the shell inner wall 11a so as to abut against the end of each fin 15a facing the aforesaid space S, and the dam ring 16b is attached to the shell inner wall 11a so as to abut against the end face of each fin 15b facing the aforesaid space S.
  • the heating roll of the corrugator as the second embodiment of the present invention is constructed as described above. Therefore, the following effects and advantages can be expected. That is, if the shell 11 is vibrated in the up-and-down direction upon rotation, then fluctuation is caused in the distance between the suction opening of the drain pipe 14 and the shell inner wall 11a, and fluctuation is also caused in the amount of absorbed by the drain pipe 14.
  • the dam ring 16a it becomes possible to keep substantially constant the thickness t of the drain water film 3a on the outer side relative to the dam ring 16a in the CD direction (i.e., the left side in FIG. 2(a)).
  • the dam ring 16b it becomes possible to keep substantially constant the thickness t of the drain water film 3a on the outer side relative to the dam ring 16b in the CD direction (i.e., the right side in FIG. 2(a).
  • FIGS. 3 (a) and 3(b) are diagrams showing a heating roll of a corrugator as a third embodiment of the present invention.
  • FIG.3 (a) is a schematic cross-section as viewed from the front side thereof
  • FIG. 3 (b) is a schematic diagram corresponding to the cross-section view taken along a line A - A and the view on arrow A of the FIG. 3 (a) (the shaft portion 12a and the drain pipe 14 are not illustrated) wherein the heating roll is placed in a rotating state.
  • Components corresponding to those described above are attached with the same reference numerals and they will not be described in detail.
  • the heating roll 10B of the present embodiment has a plurality of ring-like fins (heat transfer portion) 25 arrayed in area covering overall width of the shell 11 with a predetermined interval interposed there between in the CD direction as shown in FIG. 3(a) and FIG. 3(b).
  • Each of the ring-like fins 25 is formed to have a height H sufficiently larger than the width (length along the CD) direction W1 or the thickness t of the drain water film 3a, and shaped into a ring extending along the shell inner wall 11a.
  • the heating roll of the corrugator as the third embodiment of the present invention is constructed as described above. Therefore, effects and advantages can be expected such that heat of the steam 2 inside the drain water film 3a can be transferred to the shell through the fins 25 which project toward the shell axial side relative to the drain water film 3a. Accordingly, the shell 11 can satisfactorily heat the paper web sheet and the paper web sheets can be free from bonding failure.
  • FIGS. 4(a) to 4(d) are diagrams showing a heating roll of a corrugator as a fourth embodiment of the present invention.
  • FIG. 4 (a) is a schematic cross-section as viewed from the front side thereof
  • FIG. 4 (b) is a schematic diagram corresponding to the cross-section taken along a line A4 - A4 of FIG. 4 (a) wherein the heating roll is placed in a rotating state
  • FIG. 4 (c) is a schematic diagram corresponding to the cross-section taken along a line A5 - A5 of FIG. 4 (a) wherein the heating roll is placed in a rotating state
  • FIG. 4 (d) is a schematic diagram as viewed on an arrow A6 in the FIG. 4 (b).
  • Components corresponding to those described above are attached with the same reference numerals and they will not be described in detail.
  • the heating roll 10C of the present embodiment is constructed as shown in FIGS. 4 (a) to 4 (c). While in the above respective embodiments the heat transfer portions are arranged as straight shaped fins 15 elongated in the CD direction or the fins 25 formed into a ring-shape, the heat transfer portion of the present embodiment is composed of a dot-shaped projection 35 having relatively small dimensions in the CD direction and in the shell circumferential direction. The projections 35 are arrayed on the overall shell inner wall 11a so as to avoid locally biased placement.
  • each of the projections 35 is formed into a columnar shape and attached to the shell inner wall 11a so that the axis thereof stands vertically with respect to the shell inner wall 11a.
  • FIGS. 4(b) and 4(c) are diagrams respectively showing cross-sections of the roll taken along the cross-sectional planes adjacent to each other in the CD direction in which groups of the projections 35 are involved, respectively.
  • the placement of the projections in the plane of FIG. 4(b) is shifted by half the pitch in the shell circumferential direction with respect to the placement of the projections in the plane of FIG. 4(c) which neighbors that of FIG. 4(b). That is, all of the projections 35 are arrayed in a staggered relationship.
  • the arrangement of the projections 35 is not limited to the staggered relationship.
  • the heating roll of the corrugator as the fourth embodiment of the present invention is constructed as described above. Therefore, effects and advantages can be expected such that heat of the steam 2 inside the drain water film 3a can be conducted to the shell 11 through the projections 35 which project toward the shell axial side relative to the drain water film 3a. Accordingly, the shell 11 can satisfactorily heat the paper web sheet and the paper web sheets can be prevented from unsatisfactory bonding to each other.
  • FIGS. 5 (a) to 6 (b) are set of diagrams showing modified structures of the projection.
  • FIG. 5(a) and FIG. 6(a) are schematic diagrams corresponding to FIG. 4(d).
  • FIG. 5(b) is a cross-section taken along a line A7-A7 of FIG. 5 (a)
  • FIG. 6 (b) is a cross-section taken along a line A8-A8 of FIG. 6(a).
  • the projection 35A is formed into a cylindrical shape having a hollow in the inside thereof, and the drain 3 can be kept in the hollow 35Aa.
  • the projection 35B has a cylindrical shape similarly to the projection 35A, but the projection 35B additionally has provided at the tip end (the end on the shell axis side) of its main body portion 35Ba a ceiling portion 35Bb having a ring-shape extending toward the cylinder axis side of the main body portion 35Ba. Owing to the ceiling portion 35Bb, compared to projection 35A, increase of a contact area to the steam 2 and a higher performance in heat conductivity from the steam 2 to the shell 11 will be available.
  • the projections 35A and 35B are attached to the shell inner wall 11a so that the axes thereof keep an upright posture relative to the shell inner wall 11a.
  • FIGS. 7(a) to 7(e) show examples in which each of the proj ections has a rectangular cross-section and stands on the shell inner wall 11a with a rectangle posture inclined with respect to the shell circumferential direction.
  • the example shown in FIG. 7(a) is one in which arrays of projections 35B and 35B adjacent to each other in the CD direction have a rectangle posture of the same inclination, the example shown in FIG.
  • FIG. 7(b) is one in which arrays of projections 35C and 35D adj acent to each other in the CD direction have rectangle postures of inclinations symmetry with respect to the center line thereof
  • FIG. 7(c) is one in which projections 35E and 35F adjacent to each other in the CD direction and projections 35G and 35H adj acent to each other in the CD direction have rectangle postures of inclinations symmetry with respect to the center line thereof.
  • projections 35E and 35G adjacent to each other in the shell circumferential direction and projections 35F and 35H adjacent to each other in the shell circumferential direction have postures of inclinations symmetry with respect to the center line thereof.
  • FIG. 7(d) shows an example of placement of projections 35J in which each of the projections 35J has a rectangular shape having a side extending in the CD direction longer than a side extending in the shell circumferential direction.
  • FIG. 7(e) shows an example of a staggered arrangement of projections 35K in which each of the projections 35K has a rectangular shape having a side extending in the shell circumferential direction longer than a side extending in the CD direction.
  • FIG. 8 is a diagram showing a heating roll of a corrugator as a fifth embodiment of the present invention in which there is shown a schematic cross-section as viewed from the front side thereof. Components corresponding to those described above are attached with the same reference numerals and they will not be described in detail.
  • a heating roll 10D of the present embodiment is constructed as shown in FIG. 8.
  • the arrangement of the heating roll 10D has an arrangement similar to that of the heating roll 10C of the aforesaid fourth embodiment, and has additionally provided driving means 17 for rotatively driving the heating roll main body composed of the shell 11 and the shaft portions 12a and 12b.
  • the driving means 17 is composed of a motor 17a, gears 17b and 17c.
  • the gear 17b is fixed to the driving shaft of the motor 17a.
  • the gear 17c is meshed with the gear 17b and fixed to the shaft 12a of the heating roll 10D.
  • the shape and the arrangement of the projections 35 of the present embodiment may be replaced with those shown in FIGS. 5(a) to 7(e) similarly to the above-described fourth embodiment.
  • the heating roll of the corrugator as the fifth embodiment of the present invention is arranged as described above. Therefore, if the driving means 17 drives the shell 11 to rotate in the running direction of the paper web sheet, the paper web sheet wound around the heating roll 10D can be free from excessive tension in the conveyed direction of the sheet upon a high rate rotation. Moreover, the heating roll 10D may be kept constant in the rotation speed thereof regardless of the running speed of the paper web sheet so that the state of the drain reserved within the shell can be made stable. Thus, fluctuation of the heat conducting rate between the drain 3 and the shell 11 can be suppressed and the performance of heat application to the paper web sheet can be stabilized.
  • FIG. 9 is a diagram showing a heating roll of a corrugator as a sixth embodiment of the present invention in which there is shown a schematic cross-section as viewed from the front side thereof. Components corresponding to those described above are attached with the same reference numerals and they will not be described in detail.
  • a heating roll 10E of the present embodiment is composed of a plurality of (in this case, a couple of) cylindrical units 11A and 11B having the same diameter arrayed coaxially with each other in the CD direction.
  • the shell 11 is divided into the plurality of units 11A and 11B arrayed in the CD direction.
  • Each of the units 11A and 11B is rotatably supported by bearings 13 at the shaft portions 12a and 12b attached to both the ends of the unit.
  • the units 11A and 11B are engaged with the driving means 17 for rotatively driving the units 11A and 11B, respectively.
  • Each of the units 11A and 11B has a cylindrical shape having a hollow therein and steam 2 is supplied into the unit through the shaft portion 12a having a pipe-shape independently.
  • the drain pipe 14 is inserted through the shaft portion 12a into the unit 11A, 11B, whereby drain can be discharged through the drain pipe 14.
  • the aforesaid shaft portion 12a is connected with a steam supplying pipe not shown in the FIG. 9 and a steam regulator valve is attached with the steam supplying pipe.
  • a steam regulator valve is attached with the steam supplying pipe.
  • the projections 35 are arranged based on the staggered relationship in each of the units 11A and 11B. Therefore, the cross-section taken along a line A9-A9 of the unit 11A and the cross-section taken along a line A12-A12 of the unit 11B become similar to FIG. 4 (b). Further, the cross-section taken along a line A10-A10 of the unit 11A and the cross-section taken along a line A11-A11 of the unit 11B become similar to one illustrated in FIG. 4(c).
  • the shape and the arrangement of the projections 35 of the present embodiment may be replaced with those shown in FIGS. 5(a) to 7(e) similarly to the above-described fourth embodiment.
  • the heating roll of the corrugator as the sixth embodiment of the present invention is constructed as described above. Therefore, similarly to the aforesaid fifth embodiment, when the respective units 11A and 11B are rotatively driven, the rate of rotation of the units 11A and 11B may be kept constant so that the fluctuation of the heat conducting rate between the drain 3 and the shell 11 is suppressed. Moreover, the amount of heat applied to the paper web sheet on the respective units 11A and 11B arrayed in the CD direction can be independently adjusted and the profile along the CD direction of temperature for applying heat to the paper web sheet can be adjusted.
  • a way for providing the heat transfer portion on the shell inner wall 11a is not limited thereto but the shell inner wall (raw material) may be subjected to grinding work so that the heat transfer portion can be formed integrally with the shell.
  • the heat transfer portion may be integrally cast with the shell to form a unitary body, if possible.
  • the fifth embodiment is particularly shown as an example having the driving means for rotatively driving the shell 11 together with the heating roll 10C of the fourth embodiment, the driving means may be provided on the heating rolls 10, 10A, 10B of the first to third embodiments.
  • the heat transfer portions to be provided on the shell inner wall 11a are the fins extending in the CD direction, the fins extending in the shell circumferential direction or dot like projections, the heat transfer portions may be composed of a mixture of the fins extending in the CD direction and the dot-like projections, or a mixture of the fins extending in the shell circumferential direction and the dot-like projections, for example.
  • the shapes, respective dimensions, the mounting pitches and so on of the heat transfer portions may not be limited to the examples illustrated in respective diagrams but they are properly varied or changed depending on various conditions which are determined by the diameter of the shell, the temperature and pressure of the heating fluid, and so on.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Drying Of Solid Materials (AREA)
EP03026107A 2002-11-15 2003-11-13 Beheizte Walze für eine Wellenpappemaschine Ceased EP1419879A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2002332447A JP3764720B2 (ja) 2002-11-15 2002-11-15 段ボールシート製造装置の加熱ロール
JP2002332447 2002-11-15

Publications (1)

Publication Number Publication Date
EP1419879A1 true EP1419879A1 (de) 2004-05-19

Family

ID=32171418

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03026107A Ceased EP1419879A1 (de) 2002-11-15 2003-11-13 Beheizte Walze für eine Wellenpappemaschine

Country Status (2)

Country Link
EP (1) EP1419879A1 (de)
JP (1) JP3764720B2 (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006120060A1 (de) * 2005-05-13 2006-11-16 Voith Patent Gmbh Beheizter zylinder
WO2006120121A2 (de) * 2005-05-13 2006-11-16 Voith Patent Gmbh Trockenzylinder
WO2006120059A1 (de) * 2005-05-13 2006-11-16 Voith Patent Gmbh Trockenzylinder
CN103890263A (zh) * 2011-09-13 2014-06-25 量子技术(德国)有限公司 用于加热纸幅或织物幅的辊
US9562324B2 (en) 2011-05-03 2017-02-07 Gregory L. Wedel Turbulence bar assembly
CN109505184A (zh) * 2018-12-25 2019-03-22 卞学询 造纸机用宽幅钢制节能烘缸
WO2019072450A1 (de) * 2017-10-10 2019-04-18 Voith Patent Gmbh Trockenzylinder für eine papiermaschine
CN112680998A (zh) * 2021-01-22 2021-04-20 安徽省华腾农业科技有限公司 一种造纸用加工设备

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008055602A (ja) * 2004-12-14 2008-03-13 Kazuo Uetake コルゲートマシン及びダブルフェーサ熱板
JP5199586B2 (ja) * 2007-02-23 2013-05-15 レンゴー株式会社 段ボールシート製造装置の蒸気加熱段ロールの加熱制御方法
JP7240880B2 (ja) * 2019-01-17 2023-03-16 三菱重工機械システム株式会社 シート加湿装置および方法並びに段ボールシートの製造装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1453113A (en) * 1922-02-18 1923-04-24 Int Paper Co Drying cylinder
DE497034C (de) * 1930-05-01 Bernhard Wicky Drehbarer Trockenzylinder fuer Papier-, Textil- und aehnliche Maschinen
US3675337A (en) * 1970-11-12 1972-07-11 Beloit Corp Dryer drum
US3724094A (en) * 1971-02-16 1973-04-03 Kimberly Clark Co Rotary drying drum
US4155177A (en) * 1977-06-10 1979-05-22 Beloit Corporation Condensate control for dryer drum
US5566473A (en) * 1994-08-16 1996-10-22 Salminen; Reijo K. Processing roll apparatus and method for web drying
EP0922921A2 (de) * 1997-12-11 1999-06-16 BHS CORRUGATED MASCHINEN- UND ANLAGENBAU GmbH Dampfbeheizte Walze, insbesondere für Wellpappemaschinen

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE497034C (de) * 1930-05-01 Bernhard Wicky Drehbarer Trockenzylinder fuer Papier-, Textil- und aehnliche Maschinen
US1453113A (en) * 1922-02-18 1923-04-24 Int Paper Co Drying cylinder
US3675337A (en) * 1970-11-12 1972-07-11 Beloit Corp Dryer drum
US3724094A (en) * 1971-02-16 1973-04-03 Kimberly Clark Co Rotary drying drum
US4155177A (en) * 1977-06-10 1979-05-22 Beloit Corporation Condensate control for dryer drum
US5566473A (en) * 1994-08-16 1996-10-22 Salminen; Reijo K. Processing roll apparatus and method for web drying
EP0922921A2 (de) * 1997-12-11 1999-06-16 BHS CORRUGATED MASCHINEN- UND ANLAGENBAU GmbH Dampfbeheizte Walze, insbesondere für Wellpappemaschinen

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006120060A1 (de) * 2005-05-13 2006-11-16 Voith Patent Gmbh Beheizter zylinder
WO2006120121A2 (de) * 2005-05-13 2006-11-16 Voith Patent Gmbh Trockenzylinder
WO2006120059A1 (de) * 2005-05-13 2006-11-16 Voith Patent Gmbh Trockenzylinder
WO2006120121A3 (de) * 2005-05-13 2007-01-25 Voith Patent Gmbh Trockenzylinder
US9562324B2 (en) 2011-05-03 2017-02-07 Gregory L. Wedel Turbulence bar assembly
CN103890263A (zh) * 2011-09-13 2014-06-25 量子技术(德国)有限公司 用于加热纸幅或织物幅的辊
WO2019072450A1 (de) * 2017-10-10 2019-04-18 Voith Patent Gmbh Trockenzylinder für eine papiermaschine
CN111226005A (zh) * 2017-10-10 2020-06-02 福伊特专利有限公司 造纸机的干燥缸
CN111226005B (zh) * 2017-10-10 2022-02-18 福伊特专利有限公司 造纸机的干燥缸
CN109505184A (zh) * 2018-12-25 2019-03-22 卞学询 造纸机用宽幅钢制节能烘缸
CN109505184B (zh) * 2018-12-25 2024-02-20 诸城大正机械科技有限公司 造纸机用宽幅钢制节能烘缸
CN112680998A (zh) * 2021-01-22 2021-04-20 安徽省华腾农业科技有限公司 一种造纸用加工设备

Also Published As

Publication number Publication date
JP3764720B2 (ja) 2006-04-12
JP2004160951A (ja) 2004-06-10

Similar Documents

Publication Publication Date Title
EP1419879A1 (de) Beheizte Walze für eine Wellenpappemaschine
JP6412098B2 (ja) 後縁冷却軸受
JPH01200948A (ja) 段ボール製造装置用溝付きロール
JPH0741310B2 (ja) 熱交換器用高性能伝熱チュ−ブとその製造方法
US4712407A (en) Apparatus for working surface of metal pipe
JP2910025B2 (ja) 板状形材の製造装置
JP4686482B2 (ja) スプライン軸の歯列プロファイル
IT9019576A1 (it) Procedimento ed apparecchiatura per aumentare internamente tubature per scambiatori di calore
JP2008273723A (ja) サクションロール及びサクションロール装置
JPH02132043A (ja) シート巻軸
JPS5847502A (ja) 圧延機のロ−ル冷却装置
WO2023050544A1 (zh) 清洁件、清洁组件和机器人
JPH0744360Y2 (ja) 非晶質金属製造用冷却ロール
JP3364733B2 (ja) 繊維切断装置
JPH0428437A (ja) 熱交換器の伝熱管用板材の曲げ加工装置
CN206781216U (zh) 一种转印膜印刷胶版辊
JP4588267B2 (ja) 内面溝付管の加工方法
US6112793A (en) Device for production of corrugated cardboard
KR20050121759A (ko) 압연 장치 및 압연 장치를 사용하여 다양한 단면을 갖는제품을 제조하는 방법
JPS6012132B2 (ja) 金属管内外面加工装置
JP2001047123A (ja) 内面溝付管の製造方法および製造装置
JP2669808B2 (ja) 段繰機
JPH09201638A (ja) 圧延装置および電縫管の製造装置
JP2512420Y2 (ja) 電縫管成形ロ―ル
JP3448913B2 (ja) フィルム熱処理用ドラム

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

17P Request for examination filed

Effective date: 20040429

AKX Designation fees paid

Designated state(s): DE ES FR IT

17Q First examination report despatched

Effective date: 20060113

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: MITSUBISHI HEAVY INDUSTRIES PRINTING & PACKING MAC

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: MITSUBISHI HEAVY INDUSTRIES PRINTING & PACKAGING M

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 20160818