EP1074498A2 - Dispositif auxilier pour guider le début d'une bande de matériau dans une machine à rouleaux - Google Patents

Dispositif auxilier pour guider le début d'une bande de matériau dans une machine à rouleaux Download PDF

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Publication number
EP1074498A2
EP1074498A2 EP00115296A EP00115296A EP1074498A2 EP 1074498 A2 EP1074498 A2 EP 1074498A2 EP 00115296 A EP00115296 A EP 00115296A EP 00115296 A EP00115296 A EP 00115296A EP 1074498 A2 EP1074498 A2 EP 1074498A2
Authority
EP
European Patent Office
Prior art keywords
roller
material web
auxiliary
web
nip
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.)
Withdrawn
Application number
EP00115296A
Other languages
German (de)
English (en)
Other versions
EP1074498A3 (fr
Inventor
Christian Dipl.-Ing. Münch
Reinhard Hoffmann
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.)
Voith Patent GmbH
Original Assignee
Voith Paper Patent 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 Voith Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP1074498A2 publication Critical patent/EP1074498A2/fr
Publication of EP1074498A3 publication Critical patent/EP1074498A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00—Other accessories for paper-making machines
    • D21G9/0063—Devices for threading a web tail through a paper-making machine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/52—Auxiliary process performed during handling process for starting
    • B65H2301/522—Threading web into machine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/84—Paper-making machines

Definitions

  • the invention relates to an insertion device for Inserting the beginning of a material web in a roller machine.
  • the invention is based on a paper web as an example of a material web and using a super calender described as an example of a roller machine.
  • a super calender described as an example of a roller machine.
  • it is not limited to this, but rather can also be used with other types of material webs, for example cardboard, film or textile material webs be used.
  • a calender you can also used a calender or another machine where several rollers work together that they form multiple nips or nips.
  • the material web is raised in the nips Pressure and possibly also at an elevated temperature acted upon.
  • the effects that are achieved here should range from compacting the web until an improvement in the surface quality. For this it is often necessary that the material web several nips or nips in succession goes through.
  • the rollers are usually in one so-called roller stack arranged, i.e. their axes lie on a common level.
  • the paper web can be inserted automatically, for example, through management facilities such as those out EP 0 232 689 A are known.
  • This configuration has however, the disadvantage that the effort and thus the cost are very high for installation.
  • the paper web is still threaded in many today Cases by hand. This will open the calender set a slow operation and the paper web is then passed from nip to nip. This is a very labor-intensive and therefore time-consuming process. Especially What is critical, however, is that it is a relative one there is a high risk of injury. The single operator must, so that he advance the paper web into the nip can reach relatively deep into the calender. This also applies to slow-running rollers Danger of the operator's hand being in the open Nip is pulled into it. This often results Contusions and other injuries.
  • the invention has for its object the threading to facilitate a web of material in a roller machine.
  • An insertion device is used to solve this problem for inserting the start of a material web specified in a roller machine with a gripping head and a carrier, the gripping head on the carrier by one Swivel axis between an inlet and an outlet position is arranged pivotably and an inlet section and has an outlet section.
  • the inlet section serves this purpose. If the beginning of the material web then using the Device has been detected and held can, the beginning of the material web to the next desired Nip be preferred. There is the gripping head swiveled and the material web is output again and in such a way that it passes through the next desired nip is advanced. This results in a clear one Reduction of the risk of injury because no more the operator's hand comes close to the nip must, but the insertion aid. In order to the gripper head has both functions, namely the gripping and pulling out on the one hand and pushing it in the nip, on the other hand, is between two positions pivotable. So it is not necessary that the gripping head at any stage of the Procedure must encompass.
  • the pivot axis is preferably perpendicular to the feed direction the material web. If you look at one Sectional view viewed through a roller machine, where the roller axes are perpendicular to the cutting plane then the swivel axis is also perpendicular this level.
  • the material web can then be gripped and then with the help of the gripping head parallel to the Rotational axes of the roller are deflected. With that stands automatically the start of the material web in the correct position before the next nip. If necessary, is only a shift parallel to the roller plane is necessary. The feed direction is "correct" again.
  • the gripping head preferably has a holding device on. This makes the material web reliable and in one defined position in the gripping head. This further facilitates the handling of the beginning of the material web.
  • the outlet section is an auxiliary drive device having.
  • the auxiliary drive device can the beginning of the material web in the nip of the roller machine be pushed in. This results in a time saver because the material web is driven can be at the outlet, so that the free web length, that must take the thrust, as small as possible can be. In addition to the time saving results a little material savings.
  • a web path advantageously has one End section on the in the running position below and in the outlet position above the auxiliary drive device runs.
  • the web path is the Path that the web follows when it is the threading aid goes through. If the web in the Inlet section occurs, then it becomes gravity follow, try to get down from the device to resign. Because the end section of the web path arranged below the drive auxiliary device is the material web when it runs through this Drive auxiliary device not hindered. If on the other hand the gripping head has been swiveled and it is in is in the outlet position, then the Auxiliary drive device below the end section, in which the web is still, so that the start of the material web then on the auxiliary drive device lies on. This ensures that the Drive auxiliary device in the outlet position on the Can act at the beginning of the web.
  • the auxiliary drive device preferably has at least a rotatably mounted roller, which in the outlet position lies below the material web.
  • the web of material can then be turned on with the help of the rotating roller the top of the two rollers that are pressing the Form nip in which the beginning of the material web is threaded shall be.
  • This roller then drives the material web , the role of which ensures that the Roll frictionally transferred to the material web Driving power also practically completely for propulsion the material web can be used.
  • the beginning of the The material web then either goes directly into the nip or he meets the lower of the two forming the nip Rolls up and is then from this roller in the Nip pushed in.
  • an auxiliary roller is arranged below the roller which is in drive engagement with the roller.
  • Man can now forward the outlet section of the gripping head position the two rollers forming the nip that the roll with the material web in between on the upper roller and the auxiliary roller on the lower roller is present.
  • the lower roller then drives the auxiliary roller on the drive intervention, for example can be formed by a simple frictional connection, drives the role. Accordingly, the material web not just driven by the top roller, but by the interaction of the upper roller with the Role. The load on the material web is extraordinary kept small.
  • between the auxiliary role and the role still other transmission elements are arranged, for example Gears, chains or the like, as long as the direction of rotation the role adapted to the direction of rotation of the upper roller is.
  • the role and the auxiliary role preferably have the same diameter. So you can easily Way, make sure the roller has the same peripheral speed like the roller has so that a slip can be avoided in the material web.
  • the roller or the auxiliary roller are preferably in drive engagement with a roller of the roller machine bringable.
  • This drive intervention can, for example produced by the swiveling movement of the gripping head become.
  • the role or the auxiliary role therefore need no own drive, therefore no own motor. she are rather by the corresponding roller of the roller machine driven.
  • This also has the Advantage that the peripheral speeds of the roller and align the corresponding role with each other, so that the web of material at the right speed can be pushed into the nip. Excessive stress the material web are thus avoided.
  • the inlet section advantageously has a channel funnel-shaped at least in sections Cross section on.
  • the funnel shape only has to the plane in which the feed direction of the Material web lies.
  • the channel preferably opens in the run-in position downward. If the web of material in the channel has occurred, it is pushed on and can then fall out through the opening.
  • the channel advantageously has a wall that covers the auxiliary drive device.
  • At least one of the two advantageously has the channel walls that delimit the top and bottom of a scraper trained edge on.
  • top and bottom the directions defined by the roll stack are. It doesn't necessarily have to be the direction of gravity act, for example, when the Calender or the roll stack is horizontal or is inclined.
  • the holding device preferably has a stamp that interacts with a counter surface. As soon as the material web far enough into the inlet section has been inserted, the stamp can be actuated become. He then presses the material web against the counter surface pliers-like tight.
  • the stamp can be used here can be operated in different ways. One is conceivable hydraulic or an air cylinder. It is also possible to use such a stamp, for example to operate a Bowden cable.
  • the stamp is preferably in the run-in position arranged above the material web and the counter surface is smooth. The beginning of the material web can then be advanced on the counter surface without going through any Obstacles to be hindered. The Stamp then acts from above on the material web, so that it Material web holds tight if desired is, but otherwise does not hinder their feed.
  • the roller stack 4 has in the simplest case three rollers 5-7.
  • a material web 8 in the present If there is a paper web, it is treated in nips 2, 3, so with increased pressure and in many cases also with an elevated temperature. To be recognizable make that the material web 8 is not necessarily in one Nip 3 must be introduced, which directly affects Nip 2, i.e. with the interposition of only one roller, follows, there is schematically a dividing line in the roller 6 9 indicated. Can between the two nips 2, 3 so even more rolls in an odd number be arranged.
  • the device 1 has a gripper head 10 with an inlet section 11 facing the nip 2 in FIG. 1 and an outlet section 12, which is shown in FIG. 2 faces the nip.
  • the gripper head 10 is one Swivel axis 13 can be pivoted by approximately 180 °.
  • the pivot axis 13 is perpendicular to the plane of the drawing, exactly like the axes of rotation of the rollers 5-7.
  • the gripper head 10 is connected to a carrier 14.
  • the carrier 14 can have different configurations. in the the simplest case is a possibly telescopic rod with which an operator the gripping head 10 by hand in front of the corresponding nip 2, 3 can bring. But it is also possible that the carrier 14 by a machine element that can be moved back and forth on the calender is formed. For example, the Carrier 14 on a driving platform, not shown be attached.
  • the inlet section 11 has a channel 15 which opens in a funnel shape towards the Nip 2 and towards the Carrier 14 tapers. Beyond the carrier 14, the Channel 15 has an opening 16 shown in FIG. 1 Infeed position downwards in the direction of gravity is directed.
  • Channel 15 is delimited by two Walls 17, 18, the ends of which face the rollers 5, 6 19, 20 are designed like a doctor blade, i.e. she can rest on the rollers 5, 6 and the material web 8 if necessary, lift off from there.
  • the channel 15 is on at least one side open parallel to the drawing plane, so that the gripper head can be moved perpendicular to the plane of the drawing to the web of material 8 to come free after the threading process is finished.
  • the lower wall 18 (based on the position in Fig. 1) is smooth. When the material web 8 enters the channel, then it can on the lower wall 18 to Slide opening 16.
  • a stamp 21 is arranged, the lowered on the wall 18 by an actuating unit 22 can be to fix the material web 8 there.
  • the determination can be made as soon as the material web 8 penetrated far enough into the insertion aid 1 is, as will be explained below.
  • the actuating unit 22 can here by a pneumatic or hydraulic cylinders formed his. It can also be an electromagnet. It is also possible that the operating unit 22 includes a sales lever that does not have one Bowden cable shown is actuated.
  • the actuation unit 22 is held on a frame 23 which are also attached to the walls 17, 18 and the Pivotal axis 13 carries.
  • the two rollers 24, 25 are through a section 26 the wall 17 covered, which runs obliquely and which if necessary material web 8 still striking there deflects down to the opening 16.
  • the stamp 21 lowered and the material web 8 is between the stamp 21 and the wall 18 clamped.
  • the gripping head 10 is then around about the pivot axis 13 pivoted about 180 ° and the carrier 14 becomes the next Move nip 3.
  • the roller 7 promotes the beginning in the nip 3.
  • the stamp 21 of the now the upper wall 18 is lifted off so that the material web 8 through the nip between the roller 24 and the roller 6 can be brought forward.
  • the device 1 works as follows: The calender is with "creep speed", that is with about 10 to 20 m / min. operated. With this speed comes too the material web 8 out of the nip 2. Before that is Gripping head 10 has been positioned so that the channel 15 is in front of the nip 2, so that the beginning of the material web 8 is collected and on the lower wall 18 on the Swivel axis 13 slides past to opening 16. When the material web 8 has been advanced so far, that they counter against a rotation of the gripping head 10 clockwise from the roller 24, then the brake is released, i.e. the stamp 21 on the Wall 18 lowered. The entire gripping head 10 retracts Piece away from the roll stack 4, rotates about 180 ° and takes the position shown in Fig. 2.
  • the two Rollers 24, 25 are against the nip 3 forming Rolls 6, 7 pressed.
  • About the lower roller 7 is first the auxiliary roller 25 and thus the roller 24 driven.
  • the calender roll 6 becomes the strip of material after loosening of the stamp 21 threaded into the next nip 3.
  • the gripping head is now parallel to the axis of rotation of the Rolls 5-7, i.e. perpendicular to the plane of the drawing, from the Material web 8 moved out. This is possible because the channel 15 is open at least on one side. If the material web 8 is only a strip the strip is then cut to width. If it's a folded tip, the material web is widened gradually automatic.
  • the device 1 can be installed on a machine as well as used by hand as a tool become. In both cases, the calender staff will Work is made easier and, above all, work becomes made safer. In addition, if necessary, finger protection to be dispensed with.

Landscapes

  • Replacement Of Web Rolls (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
EP00115296A 1999-08-06 2000-07-14 Dispositif auxilier pour guider le début d'une bande de matériau dans une machine à rouleaux Withdrawn EP1074498A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19937196 1999-08-06
DE19937196A DE19937196A1 (de) 1999-08-06 1999-08-06 Einführhilfsvorrichtung zum Einführen des Anfangs einer Materialbahn in eine Walzenmaschine

Publications (2)

Publication Number Publication Date
EP1074498A2 true EP1074498A2 (fr) 2001-02-07
EP1074498A3 EP1074498A3 (fr) 2002-03-27

Family

ID=7917478

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00115296A Withdrawn EP1074498A3 (fr) 1999-08-06 2000-07-14 Dispositif auxilier pour guider le début d'une bande de matériau dans une machine à rouleaux

Country Status (3)

Country Link
US (1) US6325265B1 (fr)
EP (1) EP1074498A3 (fr)
DE (1) DE19937196A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100740728B1 (ko) 2000-06-14 2007-07-19 바스프 악티엔게젤샤프트 아크롤레인 및(또는) 아크릴산의 제조 방법
CA2354381A1 (fr) * 2001-07-31 2003-01-31 Dennis R. Christensen Appareil et methode d'application de bache
FI112876B (fi) * 2002-10-16 2004-01-30 Metso Paper Inc Järjestely päänviennissä paperikoneen monitelakalanterilla
DE10358155B4 (de) * 2003-12-10 2011-12-15 M-Real Oyj Vorrichtung zum Überführen einer Materialbahn
DE102007006647A1 (de) 2007-02-06 2008-08-07 Basf Se Verfahren zur Regenerierung eines im Rahmen einer heterogen katalysierten partiellen Dehydrierung eines Kohlenwasserstoffs deaktivierten Katalysatorbetts
DE102008044946B4 (de) 2008-08-29 2022-06-15 Evonik Superabsorber Gmbh Einsatz von Schaumkörpern in Oxidations-Reaktoren zur Herstellung ungesättigter Carbonsäuren
FI126242B (fi) * 2015-01-14 2016-08-31 Takso-Ohjelmistot Oy Sovitelma ja menetelmä kuiturainan päänvientiä varten sekä päänvientilaitteisto
US11305467B2 (en) * 2020-01-08 2022-04-19 Mega Machinery, Inc. Toggled roll stack

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB137539A (en) * 1918-03-26 1920-10-21 Great Northern Paper Co An improved method and machine for making paper
US2776605A (en) * 1952-02-29 1957-01-08 Mcafoos Herbert Ward Threading device for calender rollers
US4014487A (en) * 1976-03-31 1977-03-29 Crown Zellerbach Corporation Web threading system
GB1533720A (en) * 1975-08-18 1978-11-29 Rooney S Transfer apparatus for paper making machines
US4520645A (en) * 1982-01-26 1985-06-04 Davy Mckee (Poole) Limited Feeding thin foil-like material into a gap between a pair of rotatable rolls
EP0232689A2 (fr) * 1985-12-23 1987-08-19 Fibron Machine Corporation Système d'enfilage d'une bande directrice dans une zone de pressage

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1461226A1 (de) * 1965-07-17 1969-01-23 Kleinewefers Soehne J Papiereinziehvorrichtung fuer Satinierkalender

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB137539A (en) * 1918-03-26 1920-10-21 Great Northern Paper Co An improved method and machine for making paper
US2776605A (en) * 1952-02-29 1957-01-08 Mcafoos Herbert Ward Threading device for calender rollers
GB1533720A (en) * 1975-08-18 1978-11-29 Rooney S Transfer apparatus for paper making machines
US4014487A (en) * 1976-03-31 1977-03-29 Crown Zellerbach Corporation Web threading system
US4520645A (en) * 1982-01-26 1985-06-04 Davy Mckee (Poole) Limited Feeding thin foil-like material into a gap between a pair of rotatable rolls
EP0232689A2 (fr) * 1985-12-23 1987-08-19 Fibron Machine Corporation Système d'enfilage d'une bande directrice dans une zone de pressage

Also Published As

Publication number Publication date
EP1074498A3 (fr) 2002-03-27
DE19937196A1 (de) 2001-03-01
US6325265B1 (en) 2001-12-04

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