EP3111007B1 - Schaberklingenvorrichtung mit einer schaberklingeneinführhilfe - Google Patents

Schaberklingenvorrichtung mit einer schaberklingeneinführhilfe Download PDF

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Publication number
EP3111007B1
EP3111007B1 EP15705015.4A EP15705015A EP3111007B1 EP 3111007 B1 EP3111007 B1 EP 3111007B1 EP 15705015 A EP15705015 A EP 15705015A EP 3111007 B1 EP3111007 B1 EP 3111007B1
Authority
EP
European Patent Office
Prior art keywords
doctor blade
cover plate
scraper
plate
doctor
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.)
Active
Application number
EP15705015.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3111007A1 (de
Inventor
Joachim Knopp
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.)
Joh Clouth GmbH and Co KG
Original Assignee
Joh Clouth GmbH and Co KG
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Filing date
Publication date
Application filed by Joh Clouth GmbH and Co KG filed Critical Joh Clouth GmbH and Co KG
Publication of EP3111007A1 publication Critical patent/EP3111007A1/de
Application granted granted Critical
Publication of EP3111007B1 publication Critical patent/EP3111007B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G3/00—Doctors
    • D21G3/005—Doctor knifes

Definitions

  • the invention relates to a doctor blade device which has a doctor blade insertion aid.
  • a device for holding doctor blades is known.
  • This has a bottom plate and a cover plate, wherein the bottom plate and the cover plate are pivotally connected to each other via a pivot bearing.
  • the doctor blade is attached to the cover plate using retaining fingers.
  • On both sides of the pivot bearing an expandable compressed air hose between the bottom plate and the cover plate is provided in each case.
  • the pivot bearing is formed by a radially supported bearing axis and a receptacle for the bearing axis.
  • the bearing axis is attached or formed on either the bottom plate or the top plate and the receptacle on either the top plate or the bottom plate.
  • a scraper blade device which comprises a scraper holder, on the cover plate holding fingers and a doctor blade insertion aid are attached, wherein the Schaberrklingeneinfood Anlagen has the shape of a conventional Schaberklingenein manufacturedschlitzes.
  • Scraper blades are used, for example, in paper machines to clean and keep clean the rotating roll surfaces during operation by pressing the scraper blades.
  • the respective scraper blade is inserted into a scraper holder and provided for the purpose of fixing in this scraper holder and to protect against falling out of the scraper holder on its underside with shaped springs or rivets.
  • These can be arranged, for example, at a distance of 70 cm on the doctor blade, wherein the doctor blade itself can have a length of for example 10 m and a width of 3 cm.
  • Scraper blades can also be used in other production machines in which roll or drum surfaces must be kept clean.
  • the doctor blades which are made of plastics, metals or composite materials, are worn down by abrasion and more or less contaminated by the coating that forms on the roll surfaces.
  • dirt deposits on the doctor blades can lead to a lifting of the doctor blade and thus to a functional limitation or even a malfunction of the doctor blade device.
  • dirt particles may, for example, fall onto the running paper web and cause disturbances in the form of a tear of the paper web.
  • it is necessary to remove a soiled doctor blade from the respective production machine to be cleaned outside the production machine and then reinserted into the respective production machine or replaced by a new doctor blade.
  • a device for extracting and cleaning doctor blades is known.
  • This known device has at least one feed station for detecting and moving the doctor blade, at least one cleaning station for the doctor blade and a blade magazine for rolling the doctor blade.
  • the feed station has two counter-rotating wheels between which the doctor blade can be clamped.
  • the counter-rotating wheels are driven by a motor. By changing the drive direction of the counter-rotating wheels, the known device can also be used when inserting a scraper blade into the scraper holder.
  • the object of the invention is to provide a scraper blade device in which the insertion of a scraper blade is improved in the scraper holder.
  • a scraper blade device having a scraper holder, which includes a base plate and a cover plate, wherein on the underside of the cover plate holding fingers are provided, which are fixed to the cover plate, and wherein on the cover plate further a
  • the doctor blade insertion aid has a scraper blade insertion funnel and an attachment portion integrally formed with the scraper blade insertion funnel in the insertion direction, and the attachment portion is secured to the top of the cover plate or the attachment portion is mounted on an extension plate fixed to the cover plate is.
  • the provided on the underside of the cover plate 3 retaining fingers 4 extend in the embodiment shown in the in the FIG. 1 left end portion of the cover plate 3 and are fixed to the cover plate 3 by means of screws 18 and 19.
  • the middle region of the retaining fingers 4 is designed as a pivot bearing 17 about which the cover plate 3 is pivotable relative to the base plate 2.
  • the pivoting of the cover plate 3 is carried out using two compressed air hoses 15 and 16, which are positioned on both sides of the pivot bearing 17 between the retaining fingers 4 and the tub bottom 2 a of the base plate 2.
  • the compressed air hoses are more or less filled with compressed air as needed to pivot the cover plate 3 in a desired manner so that it either rests against the surface of the roller to be cleaned to remove residues from the roll surface during operation, or that of the surface of the roller is lifted, for example for the purpose of extracting the scraper blade 5 from the scraper holder.
  • the screw 18, by means of which in the FIG. 1 shown holding fingers 4 is attached to the cover plate 3, serves in the illustrated embodiment, together with a further screw 18, which in the insertion direction 14 behind from the FIG. 1 located and spaced therefrom, for fastening a Schaberklingeneinfood Anlagen 6 on the cover plate 3.
  • This Schaberklingenein200 Huawei 6 is attached to the top of the cover plate 3 at this. It has a doctor blade insertion funnel 7 and a fastening section 8. This is arranged in the insertion 14 behind the Schaberklingenein discoursetrichter 7 and formed integrally therewith.
  • the attachment portion 8 has attachment openings 8a through which said screws 18 are guided to secure the doctor blade insertion aid 6 to the cover plate 3 of the scraper holder 1.
  • FIG. 1 bottom right is a sketch of a plan view of the doctor blade insertion aid 6 in the direction of in the upper sketch of FIG. 1 shown arrow 23 shown. From this sketch, the doctor blade insertion funnel 7, which can be seen with this integrally formed mounting portion 8 and provided in the attachment portion 8 mounting holes 8a. Furthermore, the insertion direction 14 of the doctor blade is illustrated in this sketch.
  • the doctor blade insertion funnel 7 has inclined walls 7a and 7b. These have a relatively large distance from each other in the entrance area of the doctor blade insertion funnel 7 and extend toward one another in the insertion direction 14 of the doctor blade. Due to the large distance of the inclined walls 7a and 7b in the input region of the doctor blade insertion funnel 7, a catching of the front end region of a doctor blade to be introduced is facilitated. In the insertion 14, the doctor blade is then selectively guided by the inclined walls 7a and 7b of the doctor blade insertion funnel 7 in a predetermined height position in which the front end portion of the introduced into the doctor holder 1 scraper blade inserted into the intended area between the retaining fingers 4 and the cover plate 3 can be inserted.
  • the doctor blade insertion funnel 7 in the insertion direction 14 on its left and right sides each have a closed side wall.
  • he can also be on his in the FIG. 1 left side with a closed side wall and on his in the FIG. 1 be formed open right side.
  • FIGS. 2 to 7 show schematic diagrams for explaining the operation of several embodiments.
  • the doctor blade insertion aid 6 has a doctor blade insertion funnel 7 and a fastening section 8 integrally formed therewith, the fastening section 8 being fastened directly to the cover plate 3 of the doctor holder.
  • the inserted doctor blade is fed in the insertion direction 14 by the doctor blade insertion funnel 7 in said narrow area between the underside of the cover plate 3 and not shown, fixed to the cover plate 3 holding fingers and then pushed in the insertion direction into the end of the doctor blade, so that the introduced Scraper blade extends over the entire longitudinal region of the scraper holder and can be applied over its entire length to the roller to be cleaned.
  • FIG. 3 shows a schematic diagram for explaining the operation of a second embodiment of the invention.
  • the doctor blade insertion aid 6 has a doctor blade insertion funnel 7 provided with a fastening portion 8 and an extension plate 9.
  • the doctor blade insertion funnel 7 is fixedly connected to an end portion of the extension plate 9 by means of screws or rivets guided through the attachment holes of the attachment portion 8.
  • the other end portion of the extension plate 9 also has attachment holes and is guided by means of these attachment holes Attached fastening means to the cover plate 3 of the scraper holder.
  • the extension plate 9 may have, for example, guide means 13 formed on its underside as a guide rail which guide the doctor blade guided by the doctor blade insertion funnel 7 with high accuracy into the above-mentioned narrow area between the holding fingers and the cover plate.
  • the advantage of this second embodiment is that even with a slightly greater distance between the front wall of the production machine and the front end portion of the scraper holder and the cover plate of the scraper holder, the insertion of the scraper blade is facilitated in said narrow area between the retaining fingers and the cover plate ,
  • FIG. 4 shows a schematic diagram for explaining the operation of a third embodiment of the invention.
  • the doctor blade insertion aid has a doctor blade insertion funnel 7 provided with a fastening section 8 and an insertion auxiliary plate 10.
  • the attachment section 8 is fastened to the cover plate 3 by means of fastening means guided through its attachment openings.
  • the insertion auxiliary plate 10 is attached to the frame of the respective production machine and, in the embodiment shown, has a distance d from the doctor blade insertion funnel 7.
  • the insertion auxiliary plate 10 and the scraper blade insertion funnel 7 fastened to the cover plate 3 are arranged one behind the other in the insertion direction 14.
  • a doctor blade guide member 13 is fixed to the underside of the insertion auxiliary plate 10, for example, a guide rail or a guide groove.
  • This third embodiment has the advantage that, in the presence of a slightly greater distance between the front wall of the production machine and the front end portion of the scraper holder and the cover plate of the scraper holder, the insertion of the scraper blade is facilitated in said narrow region between the retaining fingers and the cover plate. Due to the insertion aid plate 10 fastened to the machine frame, a guide for the doctor blade to be introduced is already present in the entrance area of the machine, which further facilitates the insertion of the doctor blade into the narrow area between the cover plate and the holding fingers.
  • FIG. 5 shows a schematic diagram for explaining the operation of a fourth embodiment of the invention.
  • the doctor blade insertion aid 6 has a doctor blade insertion jig 7 provided with a fixing portion 8, an extension plate 9, and an insertion auxiliary plate 10.
  • the doctor blade insertion funnel 7 is fixedly connected to an end portion of the extension plate 9 by means of fixing means guided through the attachment holes of the attachment portion 8.
  • the other end region of the extension plate 9 also has attachment openings and is fastened to the cover plate 3 of the scraper holder 1 by means of fastening means guided through these attachment openings.
  • the extension plate 9 has advantageously on its upper side a stiffening element 12 and on its underside a doctor blade guide member 13.
  • the stiffening element 12 may be an elongate L-shaped metal rail.
  • the doctor blade guide member 13 may be be a guide rail or a guide groove.
  • This fourth embodiment has the advantage that, in the presence of a greater distance between the front wall of the production machine and the front end portion of the scraper holder and the cover plate of the scraper holder, the insertion of the scraper blade is facilitated in said narrow region between the cover plate and the retaining fingers. Due to the insertion aid plate fastened to the machine frame, a guide for the scraper blade to be introduced is already present in the entrance area of the machine, which facilitates the insertion of the scraper blade into the doctor blade insertion funnel 7. The guided through the doctor blade insertion funnel 7 scraper blade is guided due to the provided by the extension plate 9 further guidance targeted in the narrow area between the cover plate of the doctor blade holder and the retaining fingers.
  • FIG. 6 shows a schematic diagram of a fifth embodiment in which the Schaberklingeneinfuel Anlagen 6 only one mounted on the cover plate 3 of the doctor blade holder extension plate 9 which is provided on its upper side with a stiffening element 12 and on its underside with a doctor blade guide member 13.
  • FIG. 7 shows a schematic diagram of a sixth embodiment in which the Schaberklingeneinfuel Anlagen 6 has a mounted on the cover plate 3 of the doctor blade holder extension plate 9 and a spaced therefrom Ein Industries,splatte 10.
  • the insertion auxiliary plate 10 and the extension plate 9 are arranged one behind the other in the insertion direction 14.
  • the extension plate 9 is provided on its upper side with a stiffening element 12 and on its underside with a doctor blade guide member 13.
  • the insertion auxiliary plate 10 is attached to the machine frame and has on its underside also a doctor blade guide member 13.

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  • Paper (AREA)
  • Details Of Cutting Devices (AREA)
EP15705015.4A 2014-02-27 2015-02-16 Schaberklingenvorrichtung mit einer schaberklingeneinführhilfe Active EP3111007B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014102579.2A DE102014102579A1 (de) 2014-02-27 2014-02-27 Schaberklingenvorrichtung mit einer Schaberklingeneinführhilfe
PCT/EP2015/053216 WO2015128216A1 (de) 2014-02-27 2015-02-16 Schaberklingenvorrichtung mit einer schaberklingeneinführhilfe

Publications (2)

Publication Number Publication Date
EP3111007A1 EP3111007A1 (de) 2017-01-04
EP3111007B1 true EP3111007B1 (de) 2017-11-22

Family

ID=52477805

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15705015.4A Active EP3111007B1 (de) 2014-02-27 2015-02-16 Schaberklingenvorrichtung mit einer schaberklingeneinführhilfe

Country Status (4)

Country Link
EP (1) EP3111007B1 (es)
DE (2) DE102014102579A1 (es)
ES (1) ES2658056T3 (es)
WO (1) WO2015128216A1 (es)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20012140U1 (de) 2000-07-13 2000-12-07 Strauch, Helmut, 97483 Eltmann Vorrichtung zum Herausziehen und Reinigen von Schaberklingen
JP4965282B2 (ja) * 2007-02-28 2012-07-04 株式会社ドクター製作所 ドクター装置
JP2010088968A (ja) * 2008-10-03 2010-04-22 Voith Patent Gmbh ブレードコータのブレード交換装置
DE102011081927A1 (de) 2011-08-31 2013-02-28 Joh. Clouth Gmbh & Co. Kg Vorrichtung zum Halten von Rakeln

Also Published As

Publication number Publication date
DE202015009523U1 (de) 2018-02-15
DE102014102579A1 (de) 2015-08-27
EP3111007A1 (de) 2017-01-04
ES2658056T3 (es) 2018-03-08
WO2015128216A1 (de) 2015-09-03

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