EP0739711B1 - Glattpresse für eine Vorrichtung zur Herstellung von Wellepappe - Google Patents

Glattpresse für eine Vorrichtung zur Herstellung von Wellepappe Download PDF

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Publication number
EP0739711B1
EP0739711B1 EP96105179A EP96105179A EP0739711B1 EP 0739711 B1 EP0739711 B1 EP 0739711B1 EP 96105179 A EP96105179 A EP 96105179A EP 96105179 A EP96105179 A EP 96105179A EP 0739711 B1 EP0739711 B1 EP 0739711B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
smooth
force
paper
cam
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
EP96105179A
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English (en)
French (fr)
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EP0739711A1 (de
Inventor
Jens Schulz
Fabio Bettinelli
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.)
Peters Maschinenfabrik GmbH
Original Assignee
Peters Maschinenfabrik GmbH
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Filing date
Publication date
Application filed by Peters Maschinenfabrik GmbH filed Critical Peters Maschinenfabrik GmbH
Publication of EP0739711A1 publication Critical patent/EP0739711A1/de
Application granted granted Critical
Publication of EP0739711B1 publication Critical patent/EP0739711B1/de
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
    • B31F1/2831—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

Definitions

  • the present invention relates to a baler in a so-called single-sided corrugated cardboard manufacturing machine sheet of fluting paper whose crests are glued on a first cover sheet.
  • This intermediate box is also called single-sided.
  • this first carton is either directly assembled to a second sheet of cover paper outside to give a cardboard called double-sided, either before assembled with a second single-sided carton to obtain a final carton called double-double.
  • the groove paper is preheated and humidified before passing between two fluted cylinders which are heated with steam.
  • the groove thus formed is maintained against the lower grooved cylinder by means of combs, or a system of the external environment, or a vacuum system of the interior of the lower grooved cylinder, the surface of which has slots of communication.
  • a glue roller bathed in a glue tank deposits a predetermined amount of glue on the ridges of the grooves.
  • the paper also preheated cover and the groove paper are finally pressure assembled between the lower grooved cylinder and a device support called a smoothing press.
  • the most commonly used baler consists of a smooth cylinder parallel to the lower grooved cylinder against which it is support. These two cylinders rotate at the same peripheral speed of such so that the cover and groove papers are fed so identical when assembled.
  • the smooth cylinder is also supported against the grooved cylinder with a very large force so that the pressure at the contact thread is sufficient to burst the glue cells and to simultaneously firmly apply the paper cover against groove paper.
  • this smooth cylinder is heated to further accelerate the setting of the glue.
  • the major drawback of this smooth cylinder are the brutal and repetitive jolts produced at each passage of a groove in the lower cylinder, in particular due to the force necessarily important support.
  • the baler consists of a cross member held at its ends by lower branches of levers, and the active face of which faces the cylinder lower grooved is arched in portion of cylinder of equal radius, even slightly higher than that of the grooved cylinder.
  • This cross member can also be hollow for the passage of heating steam. However, less balanced and less rigid than a cylinder, such a cross member can twist and / or warp making that the application pressure is no longer uniform over the entire length of the grooved cylinder. The quality of the gluing is then greatly altered.
  • the baler consists of an endless band passing between upper rollers and lower located parallel and close to the lower grooved cylinder, respectively at mid-height and below. This strip is thus in contact with the grooved cylinder on a quarter of the lower periphery.
  • This band endless can be a thin strip of steel or a carpet of copper wires, cotton or synthetic fibers.
  • the pressure applied to the sheets by this baler depends on the tension applied to the endless belt. It is therefore advisable to provide a complex mechanical spacing device for one of the rollers of the endless belt compared to the other, and this with the possibility of adjustment of this large voltage to a specific value. Again, it's impossible to maintain a constant tension throughout the width of the endless strip, therefore a uniform application pressure of the sheet of cover against the flute sheet.
  • the object of the present invention is a heald press in a more efficient single-sided corrugated machine in particular by constantly applying uniform pressure to full width of a cover sheet joined to a sheet of groove passing around the lower grooved cylinder.
  • the document DE 43 05 158 describes a device for regulating the bearing force of a cylinder upper arm against a lower grooved cylinder.
  • the smooth cylinder is mounted on both sides on a pair of levers, both upstream ends of the levers being rotatably mounted on an axis integral with the frame, while the two downstream ends each rest on a stop vertically movable under the control of a corresponding motorized cam.
  • a constant pressure hydraulic actuator exerts a vertical force pointing down also on the downstream end corresponding lever.
  • a force detector inserted between the stop and the downstream end of lifting measures the resulting force towards the lower cylinder weight and actuator support more or less compensated upwards by the feedback of the grooved cylinder. If the force result differs from a set value, the position of the cam is modified, which raises or lowers the stop and end of the lift, so changes the smooth cylinder feedback.
  • this device is essentially designed to regulate a support load from a single global measurement very important capable, at the level of a single contact net, of bursting glue cells and assemble the papers.
  • the force detectors are so chosen so that you can read important values with their precision given.
  • the force sensor In a low load regulation application, the force sensor would read the maximum force almost permanently resulting from the weight of the cylinder and the support of the actuators, and would absolutely insensitive to any variation in low load. In addition, variations in the apparent weight of the cylinder due to changes in tension cover paper, or a drift in actuator pressure may completely deceive the feedback. In addition, the baler must allow the adjustment of the application pressure to a fair value necessary and sufficient to obtain the effective setting of the adhesive without damaging the leaves. Finally, the design of this smooth press must be relatively simple to ensure operational reliability in the time and ease of implementation and maintenance at cost reasonable.
  • a heddle press comprising a smooth cylinder acting in conjunction with a lower grooved cylinder to apply a cover paper against a passing groove paper around this grooved cylinder, this press further comprising a device tractor downstream of the lower grooved cylinder, located in relation to the cylinder smooth so that there is a tying angle for the paper cover against the grooved cylinder, this tractor device applying to the cardboard a tension of tension repercussions in the form of a pressure of cover paper against groove paper at surface level lashing, characterized in that the linear bearing load of the cylinder smooth against the lower grooved cylinder is regulated to a low value between 0 to 7 N / mm and in that the smooth cylinder is mounted between a pair of levers underlying the grooved cylinder, pair of levers whose two ends on the same side are rotatably mounted on an axis secured to the smooth press frame, while the other two ends opposite levers are each carried by a pressure actuator constant through a first force detector, the upper edge of each lever abut
  • lashing angle is meant the angle at the top of the arc of circle defining, in a vertical plane transverse to the grooved cylinder, the contact surface, in a cylinder portion, between the cover paper and the grooved cylinder, surface also called tying surface.
  • Voltage tensile force is defined as the tensile force per unit width of papers.
  • the linear bearing load is defined as the bearing force per unit of width exerted by the smooth cylinder on its thread contact with the grooved cylinder.
  • the tractor device is supplemented by a parallel flexible roller with additional support acting on the fluting paper.
  • the contact between each lever and its stop is located at the contact thread between the smooth cylinder and the grooved cylinder.
  • the axis of rotation of the levers is located at the same height as the axis of the smooth cylinder, and in that the paper cover is guided by an upstream roller so as to enter contact with the smooth cylinder at its lower generator for the leave at the level of its upper generator.
  • the tractor cylinder is supplemented by a parallel flexible roller with additional support acting on the fluting paper, and this to limit the sliding of the cardboard to the strict necessary.
  • the two force sensors can be strain gauges whose resistance variations are detected within a circuit electric called Wheatstone Bridge.
  • the axis of rotation of the levers is located at the same height as the axis of the smooth cylinder, and the cover paper is guided by a upstream roller so as to come into contact with the smooth cylinder at level of its lower generator to leave it at the level of its generator higher, i.e. the two generators belonging to the same plane vertical center of the cylinder.
  • the harmful effects of variations in tension in the cover paper on the apparent weight of the smooth cylinder are annihilated.
  • the fluting paper 2 arrives from above and travels a first U-turn around an upper grooved cylinder 10.
  • This paper 2 is grooved at the level of the engagement of the upper cylinder 10 with a second lower grooved cylinder 12.
  • the groove paper 2 as well formed is held against this lower cylinder 12 during a second half-turn downwards by a device not illustrated which can be combs, a external overpressure created in a casing or a depression internal to the lower grooved cylinder with radial openings allowing the suction of the paper.
  • a roller sizing machine 13 deposits a line of glue on each groove crest.
  • a cover paper 4 is guided by a roller upstream 11 to arrive horizontally towards a lower smooth cylinder 14 with which it comes into contact tangentially at its generator lower.
  • This paper is preheated when it rotates half a turn towards the high around this smooth cylinder which it leaves at the level of its generator superior when applied well parallel to the paper flute 2 wound on the lower fluted cylinder 12.
  • the cardboard 6 thus formed and leaving the grooved cylinder 12 is pulled downstream by a grille made up of a traction cylinder 16 surmounted by a flexible support roller 18.
  • the cardboard 6 is thus wrapped by its more solid cover paper 4 around the upper half of the traction cylinder 16.
  • the contact pressure between this carton and this traction cylinder is reinforced by the support of the roller 18 acting against the more fragile fluting paper.
  • this roller support includes an elastomer periphery connected to its central shaft by a series of longitudinal radial fins also made of elastomer, the cross section is oblique, even curved.
  • the traction cylinder 16 rotates at a peripheral speed 4 to 6% greater, for example 5%, than the speed of the cardboard as imposed downstream by the common peripheral speed of rotation of the smooth cylinder and grooved cylinder 12. This slight speeding implies a sliding friction of the cylinder with respect to the cardboard, which induces in the entire width of the cardboard strip a tensile tension (f).
  • the tractor cylinder 16 is arranged parallel and close to the first upper grooved cylinder 10 of so as to increase the contact surface between the cardboard just formed and the lower grooved cylinder 12 at least at a lashing angle greater than 25 °, in this case practically equal to 45 °.
  • the tension of tension (f) is reflected under the form of a pressure (p) which keeps the paper cover 4 against the fluting paper 2 when setting the glue which can therefore be carried out more completely and more effectively.
  • this smooth cylinder is brought in and automatically kept close to the grooved cylinder with just clearance (h) sufficient to make the first application of the cover paper under a low load of the order of 0 to 7 N / mm, preferably between 3 and 5 N / mm. This charge is sufficient to burst and trigger the glue cells without any risk for papers and cylinders.
  • the axis of rotation 17 of the smooth cylinder 14 is maintained from on both sides by levers 50 movable in rotation in one of their ends, preferably on the supply side of the cover paper 4, at a axis 52 secured to the frame of the machine.
  • the other end of each lift 50 is supported by a hydraulic cylinder 60 through a first force detector 62.
  • the axis of articulation of the levers 52 being at the same height as the axis of rotation 17 of the smooth cylinder 14, the action of the cylinder 60 is essentially an ascent or descent of the smooth cylinder 14 vertically, allowing this cylinder to come into contact with the lower grooved cylinder 12 according to a coinciding contact thread respectively with the upper and lower generators.
  • this equal height of the axes of rotation means that a variation in tension at within the cover paper, resulting in a force on the cylinder also horizontal, does not create any torque at the articulation axis 52 risking inadvertently going up or down this smooth cylinder 14.
  • the upper edge of the levers 50 is in constant support on a linear cam with oblique face 70 through a second detector force 63.
  • this cam 70 can be moved horizontally by a motor 72 mounted on the lever 50.
  • the threaded outlet axis 74 of the motor 72 is engaged in a tapping of the cam 70.
  • the automatic gap regulation (h) can be performed on the base of a differential measurement according to the following method.
  • the cylinder 60 lifts the cylinder. 14 and the levers 50 without the latter touching the linear cam 70.
  • the first reading of the force detector 62 then corresponds to the only weight of its organs, which reading is memorized for subsequent subtraction, this which eliminates any influence of this weight in the rest of the process.
  • the jack 60 presses the levers 50 against the linear cam 70 with an upwardly directed force Fh, the cam 70 being sufficiently advanced so that the smooth cylinder 14 is not in contact with the papers and the lower grooved cylinder 12.
  • the feedback of the cam 70 implies a value Fb such that, at the level of the articulation axis 52 of the levers 50, an equality of torques is obtained.
  • Fh x Lh Fb x Lb . This is the tightening torque holding the levers 50 firmly in position.

Landscapes

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

Claims (5)

  1. Presswalze in einer einseitigen Maschine zur Herstellung von Wellpappe (6), welche eine glatte Walze (14) umfasst, die zusammen mit einer unteren Riffelwalze (12) ein Deckpapier (4) gegen ein um diese Riffelwalze (12) verlaufendes Wellpapier (2) drückt, wobei diese Presswalze ausserdem eine Zugvorrichtung (16) umfasst, welche in bezug auf die glatte Walze (14) so angeordnet ist, dass sich ein Spannwinkel (e) des Deckpapiers (4) gegen die Riffelwalze ergibt, wobei diese Zugvorrichtung dem Karton eine Zugspannung (f) erteilt, welche sich in der Form eines Druckes (p) des Deckpapiers gegen das Wellpapier auf der Höhe der Spannfläche auswirkt, dadurch gekennzeichnet, dass die lineare Andrucklast (q) der glatten Walze (14) gegen die untere Riffelwalze (12) auf einen niedrigen Wert, zwischen 0 bis 7 N/mm reguliert ist, und dass die glatte Walze (14) zwischen einem Paar Hebel (50) unter der Riffelwalze (12) angebracht ist, wobei die zwei Enden der Hebel (50) auf der gleichen Seite drehend auf einer Achse (52), welche mit dem Gestell der Presswalze fest verbunden ist, angebracht sind, während die zwei anderen, gegenüberliegenden Enden der Hebel (50) jeweils von einem Zylinder (60), der einen konstantem Druck auf einen ersten Drucksensor (62) ausübt, getragen werden, wobei ein zweiter Drucksensor (63) im oberen Rand von jedem Hebel (50) angebracht ist, welcher gegen einen motorisierten Nocken (70, 72) zum Anschlag kommt.
  2. Presswalze gemäss Patentanspruch 1, dadurch gekennzeichnet, dass die Zugvorrichtung (16) mit einer zusätzlichen parallelen biegsamen Stützrolle (18) ausgestattet ist, welche auf das Wellpapier (2) wirkt.
  3. Presswalze gemäss Patentanspruch 1, dadurch gekennzeichnet, dass der Kontakt zwischen jedem Hebel (50) und seinem Anschlag (70) auf der Höhe der Berührungslinie zwischen der glatten Walze (14) und der Riffelwalze (12) angeordnet ist.
  4. Presswalze gemäss Patentanspruch 1, dadurch gekennzeichnet, dass die Drehachse (52) der Hebel (50) auf gleicher Höhe angeordnet ist wie die Achse (17) der glatten Walze (12), und dass das Deckpapier (4) von einer stromaufwärtigen Rolle (11) so geführt wird, dass es mit der glatten Walze (12) auf der Höhe von ihrer unteren Zeugelinie in Kontakt kommt und sie auf der Höhe der oberen Zeugelinie verlässt.
  5. Regelungsverfahren einer Presswalze gemäss Patentanspruch 1, dadurch gekennzeichnet, dass es besteht aus :
    die Hebel (50) und die glatte Walze (12) mittels der Zylinder (60) anheben, um den Wert der ersten Sensoren (62), welche nur durch das Gewicht dieser Elemente beeinflusst werden, abzulesen und diese Ablesungen anschliessend auf einen Nullwert nachkalibrieren,
    jeden Hebel (50) mittels seinem Zylinder (60) gegen seinen Nocken (70) mit einer auf dem ersten zugehörigen Sensor (62) abgelesenen Kraft Fh zum Anschlag bringen, die Gegenkraft Fb des entsprechenden Nockens messen, wie von einem zweiten Sensor (63) abgelesen, und, in bezug auf die Drehachse (52) der Hebel, die Gleichmässigkeit der Drehmomente Fh x Lh = Fb1 x Lb erstellen, wobei Lh und Lb die jeweiligen Achsabstände des Zylinders und des Nockens darstellen,
    die Stellung von jedem Nocken (70) ändern, um die glatte Walze (14) gegen die Riffelwalze (12) zu drücken, was auf beiden Seiten eine Gegenkraft Fp der Riffelwalze bildet, welche diejenige des Nockens verringert, wodurch eine neue Drehmomentgleichmässigkeit Fh x Lh = (Fb2 x Lb) + (Fp x Lp) erzielt wird, wobei Lp der Achsabstand der Kontaktlinie der glatten Walze mit der Riffelwalze, und Fb2 die neue Ablesung des zweiten Sensors darstellen,
    die Stellung von jedem Nocken (70) bei der Ablesung des zweiten Sensors (63) Fbi so regeln, dass die Kraft Fp auf beiden Seiten auf einem konstanten Wert gehalten wird, so wie : 2 x Fp / Breite des Papiers = q gewünschte lineare Last.
EP96105179A 1995-04-24 1996-04-01 Glattpresse für eine Vorrichtung zur Herstellung von Wellepappe Expired - Lifetime EP0739711B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1159/95 1995-04-24
CH115995 1995-04-24

Publications (2)

Publication Number Publication Date
EP0739711A1 EP0739711A1 (de) 1996-10-30
EP0739711B1 true EP0739711B1 (de) 1998-12-23

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EP96105179A Expired - Lifetime EP0739711B1 (de) 1995-04-24 1996-04-01 Glattpresse für eine Vorrichtung zur Herstellung von Wellepappe

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US (1) US5685929A (de)
EP (1) EP0739711B1 (de)
DE (1) DE69601191T2 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09300493A (ja) * 1996-05-14 1997-11-25 Isowa Corp 片面段ボール製造装置
JP3517110B2 (ja) * 1998-04-03 2004-04-05 株式会社イソワ 片面段ボール製造方法および装置
IT1308594B1 (it) * 1999-02-09 2002-01-08 Sgm Spa Calandra magnetica con dispositivo di regolazione della pressionedi contatto tra i rulli
GB201302572D0 (en) * 2013-02-14 2013-03-27 Interpac Ltd Improvements to apparatus for the manufacture of corrugated board

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2142591A1 (en) * 1971-06-21 1973-02-02 Roquette Freres Plastics coated press - for surfacing corrugated paper
US3707909A (en) * 1971-08-13 1973-01-02 S & S Corrugated Paper Mach Pressure roll loading
DE2527819A1 (de) * 1975-06-21 1976-12-30 Bhs Bayerische Berg Maschine zur herstellung einseitig beklebter wellpappe
US4038122A (en) * 1975-07-07 1977-07-26 Westvaco Corporation Method and apparatus for fabricating corrugated board from poly-coated paper
JPS57182423A (en) * 1981-05-08 1982-11-10 Mitsubishi Heavy Ind Ltd Pasting device
US4704171A (en) * 1986-03-03 1987-11-03 Adolph Coors Company Laminating device with paper tension control
JPS62214945A (ja) * 1986-03-17 1987-09-21 株式会社イソワ 片面段ボ−ル製造装置
DE3631803A1 (de) * 1986-09-18 1988-03-31 Bhs Bayerische Berg Einseitige wellpappenmaschine
JPS63242527A (ja) * 1987-03-30 1988-10-07 三菱重工業株式会社 シングルフエ−サ
US5223071A (en) * 1989-02-02 1993-06-29 Hermann Berstorff Maschinenbau Gmbh Apparatus for producing chip and fiberboard webs of uniform thickness
JP2592183B2 (ja) * 1990-12-25 1997-03-19 三菱重工業株式会社 片面段ボール製造機
JPH0596668A (ja) * 1991-10-11 1993-04-20 Mitsubishi Heavy Ind Ltd シングルフエーサの自動設定装置
DE4305158C3 (de) * 1993-02-19 2003-10-30 Bhs Corr Masch & Anlagenbau Wellpappenmaschine zur Herstellung einseitiger Wellpappe
FR2708011B1 (fr) * 1993-07-20 1995-10-13 Otor Sa Machine et procédé de fabrication d'une feuille de carton ondulé simple face.
GB2281921A (en) * 1993-08-31 1995-03-22 Isowa Kk Apparatus for producing single-faced corrugated board sheets

Also Published As

Publication number Publication date
DE69601191D1 (de) 1999-02-04
US5685929A (en) 1997-11-11
EP0739711A1 (de) 1996-10-30
DE69601191T2 (de) 1999-06-10

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