EP2169114B1 - Scraping apparatus for the paper industry - Google Patents

Scraping apparatus for the paper industry Download PDF

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Publication number
EP2169114B1
EP2169114B1 EP08736714.0A EP08736714A EP2169114B1 EP 2169114 B1 EP2169114 B1 EP 2169114B1 EP 08736714 A EP08736714 A EP 08736714A EP 2169114 B1 EP2169114 B1 EP 2169114B1
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EP
European Patent Office
Prior art keywords
magnetic
paper industry
tray
scraping apparatus
scraping
Prior art date
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Not-in-force
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EP08736714.0A
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German (de)
French (fr)
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EP2169114A4 (en
EP2169114A1 (en
Inventor
José Joaquín Amonarriz Azcolain
José Miguel Echeberria Goicoechea
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Lantier Inbelkar Sl
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Individual
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Publication of EP2169114A4 publication Critical patent/EP2169114A4/en
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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G3/00—Doctors
    • 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 subject of the invention is a scraping apparatus for the paper industry, those comprising a scraper blade, a scraper blade support with a pivot axis with respect to a plate, said plate being supported on an armature of the device.
  • the object of the invention refers to solutions for the extraction, insertion and docking of a blade holder on the frame of a doctor, when the access of the lateral edges of the said doctor is limited.
  • the scraper apparatus for the paper industry object of the invention provides a solution to these limitations and / or defects with a different technology that uses magnetic forces to moor the blade holder to the frame.
  • the use of magnetic forces allows the fixing force to be deactivated or activated by a simple operation. This activation or deactivation operation can be done remotely. Thus from the side edge of the doctor, it is possible to activate or deactivate the force which occurs over the whole length of the doctor.
  • Magnetic docking allows the system the ability to use a large clearance in the guidance system, which translates into greater ease of extraction and insertion, because once the system is in place, this game is suppressed by means of magnetic forces. For some concrete achievements, in addition, one can realize a system where the positioning is repeated.
  • the lateral insertion of the blade holder into the doctor is effected successively; the positioning of the blade holder on the doctor, and the activation of the magnetic attraction force.
  • the object of the invention is a scraper apparatus for the paper industry which comprises a scraper blade (I) and a support (s) of the scraper blade (1) with a pivot axis (e), relative to a plate (4), the latter bearing on a frame (b) of the device.
  • the guidance of the system takes place employing elements whose sole function is to guide the blade holder at the time of disabling the magnetic force and allowing lateral extraction of the blade holder.
  • the docking of the blade holder to the doctor is achieved by the attraction force of the magnetic actuator assembly (1, 2 and 3) on the plate (4) of the blade holder.
  • the magnetic actuator assembly includes at least one permanent or electromagnetic magnet (1), permeable material (2) and non-permeable material (3) disposed in the armature (b) and the permanent magnet / electromagnet (1) acting or not on an area of ferromagnetic material (z) disposed on the blade holder (s).
  • This composition is identified below as a set of magnetic means (1), (2), (3).
  • This solution can also be implemented, as indicated on the figure 2 , including all the magnetic means (1), (2), (3) under the guide element (11). This solution simplifies the manufacture of the device, although it requires more powerful magnets to support the same load.
  • the guide element (11) defines an inner position with walls cooperating with the walls of an opening (ch) defined in an additional support element (14) -see detail, figure 4 -.
  • the magnetic docking is used to fix the blade holder (s) against the frame (b) fixedly.
  • the efforts to be made by the magnetic mooring (1), (2), (3) are very small and, when this mooring is performed, the position of the blade holder (5) relative to the armature (b) is repetitive and the existing games at the time of editing are totally canceled.
  • the clearance of the assembly is removed by activating the magnetic actuator (1), (2), (3), the blade holder then leans on the additional element (14), and on the conical face of the element (11).
  • the strength of the process goes into favor of the magnet (1) and the magnetic system is therefore less bulky than in the solutions described above.
  • This embodiment has two different states, once the blade holder (5) has been inserted into the doctor:
  • the force achieved by the magnetic actuator is negligible, and the blade holder is pressed on the additional element (14) and on the guide element (11).
  • the existing game in this situation is high since the additional support member (14) can only restrict left-to-right movements as well as pivoting on that same point.
  • the magnetic assembly (1, 2 and 3) creates an attractive force (downward in the figure) on the holder of the blade holder (4).
  • This attractive force causes that, if the system pivots on the fulcrum (e), the guide element (11) of the blade holder portion moves upwards until it meets the end with the guide (141) of the support member (14).
  • this guide element (11) has a conical shape makes this element is placed on a small pan which is formed on the guide (141), so that the equilibrium position is unique and therefore, that the position of the blade holder is repetitive.
  • the path between the two extreme positions is the game that will be available to the system when performing the extraction or insertion of the blade holder in the frame of the doctor.
  • the action of the magnetic means (1), (2), (3) can cancel these games once the extraction and insertion operations performed. If no extraction or insertion of the blade holder into the doctor is performed, the games are no longer necessary, and they can only cause negative consequences in the operation of the device.
  • This solution can also be implemented as in the figure 6 , including the set of magnetic means (1), (2), (3) under the guide member (11). This solution simplifies the manufacture of the device, even if it requires more powerful magnets to support the same load.
  • the realization represented on the figure 5 is similar to that shown on the figure 3 with the particularity of having more than one set of magnetic means (1), (2), (3). It has, in practice, at least one set of magnetic means (1), (2), (3) on each side of the pivot axis (e).
  • the blade holder is supported on the entire plate (4) because an action is exerted on both sides of the blade holder.

Landscapes

  • Paper (AREA)
  • Coating Apparatus (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Electromagnets (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Sheet Holders (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)

Description

L'invention a pour objet un appareil de raclage pour l'industrie papetière, de ceux qui comportent une lame racleuse, un support de lame racleuse avec un axe de pivotement par rapport à un plateau, ce dit-plateau prenant appui sur une armature de l'appareil.The subject of the invention is a scraping apparatus for the paper industry, those comprising a scraper blade, a scraper blade support with a pivot axis with respect to a plate, said plate being supported on an armature of the device.

En particulier, l'objet de l'invention se réfère à des solutions pour l'extraction, l'insertion et l'amarrage d'un porte-lames sur l'armature d'un docteur, quand l'accès des bords latéraux du dit-docteur est limité.In particular, the object of the invention refers to solutions for the extraction, insertion and docking of a blade holder on the frame of a doctor, when the access of the lateral edges of the said doctor is limited.

En l'état actuel de la technique, on peut déjà citer des appareils racloirs connus, comme par exemple et entre autres, les documents de Brevet EP1746206 , EP1734182 , EP1381733 , EP1042554 ET WO2006091427 .In the current state of the art, it is already possible to mention scrapers known, for example, and among others, Patent EP1746206 , EP1734182 , EP1381733 , EP1042554 AND WO2006091427 .

Les solutions connues présentent des limitations et/ou des défauts; comme quand l'extraction est faite latéralement et sans aucun mouvement dans une autre direction, il n'est aucun système fiable qui permette d'éviter le jeu dans les zones éloignées des bords latéraux du docteur.Known solutions have limitations and / or defects; as when the extraction is made laterally and without any movement in another direction, there is no reliable system which avoids play in areas far from the lateral edges of the doctor.

C'est pourquoi, on ne peut disposer de beaucoup de jeu pour l'élément de guidage et en conséquence:

  • ai) les opérations d'insertion et d'extraction du porte-lames peuvent présenter des difficultés.
  • a2) à mesure que l'élément de guidage s'encrasse, l'opération d'insertion et d'extraction est plus difficile à réaliser (et si initialement il y a un jeu peu important, cela accentue le problème).
  • b) Le positionnement de la lame peut ne pas se répéter.
  • c) Quand pendant le processus surviennent des forces inattendues comme, par exemple, l'impact dû au passage d'une feuille de parier il peut se faire que le système perde la pré-charge et il peut se produire des vibrations en raison du jeu.
  • d) Quand on voulait supprimer ce jeu, dans les solutions précédentes, on utilisait une solution mécanique de blocage installé dans la rainure, laquelle solution mécanique:
    • d1) peut se bloquer en raison de l'encrassement, rendant difficile ou impossible l'extraction du porte-lames.
    • d2) utilise une languette qui subit des déformations importantes à chaque opération d'extraction et d'insertion, et donc pourrait avoir des problèmes d'usure.
Therefore, we can not have much play for the guide element and accordingly:
  • a) the operations of insertion and extraction of the blade holder may present difficulties.
  • a 2 ) as the guiding element becomes dirty, the insertion and extraction operation is more difficult to perform (and if initially there is a small clearance, this accentuates the problem).
  • b) The positioning of the blade may not be repeated.
  • c) When during the process unexpected forces occur such as, for example, the impact due to the passage of a sheet of paper it can happen that the system loses pre-charge and vibrations can occur due to the game .
  • d) When we wanted to eliminate this game, in the previous solutions, we used a mechanical solution of blocking installed in the groove, which mechanical solution:
    • d 1 ) may become blocked due to fouling, making it difficult or impossible to extract the blade holder.
    • d 2 ) uses a tongue that undergoes significant deformations at each extraction and insertion operation, and therefore could have wear problems.

Pour trouver des solutions à ces limitations et/ou défauts, la technologie connue emploie:

  • des jeux importants
  • des amarrages en différentes positions longitudinales du porte-lames pour éviter les problèmes causés par l'importance du jeu
  • des systèmes de fixation dont la fonctionnalité n'est pas affectée par l'encrassement.
To find solutions to these limitations and / or defects, the known technology employs:
  • important games
  • moorings in different longitudinal positions of the blade holder to avoid problems caused by the importance of the game
  • fastening systems whose functionality is not affected by fouling.

L'appareil de raclage pour l'industrie papetière objet de l'invention apporte une solution à ces limitations et/ou défauts avec une technologie différente qui emploie des forces magnétiques pour amarrer le porte-lames à l'armature. L'emploi de forces magnétiques permet à la force de fixation d'être désactivée ou activée au moyen d'une simple opération. Cette opération d'activation ou de désactivation peut se faire à distance. Ainsi donc depuis le bord latéral du docteur, on peut activer ou désactiver la force qui se produit sur toute la longueur du docteur.The scraper apparatus for the paper industry object of the invention provides a solution to these limitations and / or defects with a different technology that uses magnetic forces to moor the blade holder to the frame. The use of magnetic forces allows the fixing force to be deactivated or activated by a simple operation. This activation or deactivation operation can be done remotely. Thus from the side edge of the doctor, it is possible to activate or deactivate the force which occurs over the whole length of the doctor.

L'amarrage magnétique permet au système la possibilité d'employer un jeu important dans le système de guidage, ce qui se traduit par une plus grande facilité d'extraction et d'insertion, car une fois le système mis en place, ce jeu est supprimé au moyen des forces magnétiques. Pour certaines réalisations concrètes, en plus, on peut réaliser un système où le positionnement se répète.Magnetic docking allows the system the ability to use a large clearance in the guidance system, which translates into greater ease of extraction and insertion, because once the system is in place, this game is suppressed by means of magnetic forces. For some concrete achievements, in addition, one can realize a system where the positioning is repeated.

L'appareil de raclage pour l'industrie papetière objet de l'invention, se caractérisé par le fait qu'il dispose de:

  1. a) une lame racleuse et un support de la lame racleuse avec un axe de pivotement par rapport à un plateau, ce plateau s'appuyant sur une armature de l'appareil,
  2. b) moyens magnétiques pour exercer des forces magnétiques entre le plateau ou un élément fixé à celui-ci et l'armature,
  3. c) moyens d'action sur les moyens magnétiques pour activer/désactiver les forces magnétiques entre le plateau et l'armature,
  4. d) dans l'armature une rainure longitudinale avec une ouverture et
  5. e) un élément de guidage uni au plateau par un corps ayant des parois coopérant avec les parois de l'ouverture, l'élément de guidage étant emboîté avec un jeu dans la rainure longitudinale de manière à ce qu'avec les moyens d'action en situation de désactivation de la force magnétique, le plateau puisse pivoter légèrement par rapport à l'armature et/ou puisse se déplacer longitudinalement sur celle-ci.
Les moyens magnétiques consistent en moins une zone de matériau ferromagnétique et en des aimants permanents ou des électroaimants disposés de manière correspondante sur l'ensemble plateau-armature.The scraping apparatus for the paper industry which is the subject of the invention is characterized by the fact that it has:
  1. a) a scraper blade and a support of the scraper blade with a pivot axis relative to a plate, this plate resting on a frame of the apparatus,
  2. b) magnetic means for exerting magnetic forces between the tray or an element attached thereto and the armature,
  3. c) means of action on the magnetic means for activating / deactivating the magnetic forces between the plate and the armature,
  4. d) in the frame a longitudinal groove with an opening and
  5. e) a guide element joined to the plate by a body having walls cooperating with the walls of the opening, the guide element being fitted with a play in the longitudinal groove so that with the means of action in a situation of deactivation of the magnetic force, the plate can pivot slightly with respect to the armature and / or can move longitudinally on the -this.
The magnetic means consist of at least one zone of ferromagnetic material and permanent magnets or electromagnets arranged correspondingly on the plate-armature assembly.

Sur l'appareil de raclage objet de l'invention, le processus de montage, démontage et amarrage du porte-lames sur le docteur sera réalisé de manière similaire, quelles que soient les réalisations concrètes en question.On the scraping apparatus object of the invention, the process of assembly, disassembly and docking of the blade holder on the doctor will be performed in a similar manner, regardless of the concrete achievements in question.

Dans l'opération d'extraction d'un porte-lames on désactive la force d'attraction magnétique du système de fixation, ce qui fait que maintenant le porte-lames et le docteur sont unis au moyen d'éléments de fixation très simples, et avec un grand jeu permettant au porte-lames de pouvoir sortir du docteur.In the extraction operation of a blade holder the magnetic attraction force of the fastening system is deactivated, so that the blade holder and the doctor are now united by means of very simple fastening elements. and with a big game allowing the blade holder to be able to get out of the doctor.

Dans l'opération d'insertion du porte-lames, on effectue successivement, l'insertion latérale du porte-lames dans le docteur; le positionnement du porte-lames sur le docteur, et l'activation de la force magnétique d'attraction.In the inserting operation of the blade holder, the lateral insertion of the blade holder into the doctor is effected successively; the positioning of the blade holder on the doctor, and the activation of the magnetic attraction force.

Les avantages de l'appareil de raclage pour l'industrie papetière, d'après l'invention, résident de manière évidente dans ses structure, composants et disposition:

  • Une fois inséré le porte-lames, il permet l'amarrage de celui-ci en n'importe quelle position du porte-lames agissant uniquement sur son bord latéral (dans le cas d'un aimant permanent) ou aussi depuis un tableau de contrôle (dans le cas d'un électroaimant).
  • La force d'amarrage peut être activée ou désactivée de manière simple.
  • Le système peut-être formaté pour obtenir la force d'amarrage adéquate. Même au moyen de simples modifications cette dite force pourrait varier après la mise en place (au moyen de la modification d'intensité de travail sur un actionneur basé sur un électroaimant ou au moyen de la modification de la distance entre aimants sur un actionneur basé sur aimants permanents).
  • Le procédé d'insertion et d'extraction est une opération facile à réaliser.
  • Permet l'emploi d'un jeu important pour l'opération d'insertion et d'extraction, de manière à ce que l'encrassement de l'élément de guidage ne devienne plus qu'un facteur secondaire, avec en plus suppression de ce jeu quand aucune opération d'extraction ni d'insertion n'est en cours.
  • une fois que la force magnétique est activée, la lame retrouve sa position.
The advantages of the scraping apparatus for the paper industry according to the invention obviously reside in its structure, components and arrangement:
  • Once inserted the blade holder, it allows the docking of it in any position of the blade holder acting only on its side edge (in the case of a permanent magnet) or also from a control panel (in the case of an electromagnet).
  • The mooring force can be turned on or off in a simple way.
  • The system can be formatted to get the proper mooring force. Even by means of simple modifications, this said force could vary after the installation (by means of the modification of work intensity on an actuator based on an electromagnet or by means of the modification of the distance between magnets on an actuator based on permanent magnets).
  • The insertion and extraction process is an easy operation to perform.
  • Allows the use of a large clearance for the insertion and extraction operation, so that the clogging of the guiding element becomes no more than a secondary factor, in addition to removing this play when no fetch or insert operation is in progress.
  • once the magnetic force is activated, the blade returns to its position.

Pour mieux comprendre l'objet de la présente invention, on représente sur des plans une forme préférentielle pour une réalisation pratique.

  • La figure 1 représente une vue générale, de haut, d'un appareil racloir, selon l'invention comme exemple de réalisation.
  • Sur la figure 1 l'actionneur magnétique se trouve placé à l'extérieur et à l'avant.
  • La figure 2 représente une vue générale, de haut, d'un appareil racloir, selon l'invention, comme exemple de réalisation alternative, avec l'actionneur magnétique placé à l'intérieur, sous le l'élément de guidage.
  • La figure 3 représente une vue générale, de haut, d'un appareil racloir, selon l'invention comme exemple de réalisation alternative, avec un actionneur magnétique placé à l'extérieur, à l'arrière quand l'aimant n'est pas en action -figure 3a-et quand l'aimant est en action -figure 3b.
  • La figure 4 est une vue avec agrandissement des détails correspondant à la figure 3.
  • La figure 5 représente une vue générale, de haut, d'un appareil racloir, selon l'invention, comme exemple de réalisation alternative, qui comporte deux actionneurs magnétiques, un placé à l'avant et l'autre à l'arrière.
  • La figure 6 représente une réalisation alternative à la figure 2.
  • La figure 7 représente une réalisation alternative à la figure 3.
To better understand the object of the present invention, a preferred embodiment is shown on planes for practical realization.
  • The figure 1 represents a general view, from above, of a scraper apparatus according to the invention as an embodiment.
  • On the figure 1 the magnetic actuator is located on the outside and the front.
  • The figure 2 represents a general view, from above, of a scraper apparatus, according to the invention, as an alternative embodiment, with the magnetic actuator placed inside, under the guiding element.
  • The figure 3 represents a general view, from above, of a scraper apparatus, according to the invention as an alternative embodiment, with a magnetic actuator placed on the outside, at the rear when the magnet is not in action - figure 3a -and when the magnet is in action - figure 3b .
  • The figure 4 is an enlarged view of the details corresponding to the figure 3 .
  • The figure 5 is a general view, from above, of a scraper apparatus, according to the invention, as an alternative embodiment, which comprises two magnetic actuators, one placed at the front and the other at the rear.
  • The figure 6 represents an alternative achievement to the figure 2 .
  • The figure 7 represents an alternative achievement to the figure 3 .

Ci-dessous est décrit un exemple de réalisation pratique, non limitative, de la présente invention.Below is an example of a practical, non-limiting embodiment of the present invention.

L'objet de l'invention est un appareil racloir pour l'industrie papetière qui comporte une lame racleuse (I) et un support (s) de la lame racleuse (l) avec un axe de pivotement (e), par rapport à un plateau (4), ce dernier prenant appui sur une armature (b) de l'appareil.The object of the invention is a scraper apparatus for the paper industry which comprises a scraper blade (I) and a support (s) of the scraper blade (1) with a pivot axis (e), relative to a plate (4), the latter bearing on a frame (b) of the device.

En conformité avec l'invention, on dispose :

  1. a) de moyens magnétiques pour exercer des forces magnétiques entre le plateau (4) ou l'élément fixé à celui-ci et l'armature, et
  2. b) de moyens d'action sur les moyens magnétiques pour activer/désactiver les forces magnétiques entre le plateau (4) et l'armature (b).
In accordance with the invention, there is provided:
  1. a) magnetic means for exerting magnetic forces between the plate (4) or the element attached thereto and the armature, and
  2. b) means of action on the magnetic means for activating / deactivating the magnetic forces between the plate (4) and the armature (b).

Dans toutes les solutions l'amarrage du porte-lames sur le docteur est réalisé uniquement au moyen de forces magnétiques.In all solutions the docking of the blade holder on the doctor is achieved only by means of magnetic forces.

Le guidage du système a lieu employant des éléments dont la fonction unique est de guider le porte-lames au moment de désactiver la force magnétique et de permettre l'extraction latérale du porte-lames.The guidance of the system takes place employing elements whose sole function is to guide the blade holder at the time of disabling the magnetic force and allowing lateral extraction of the blade holder.

L'amarrage du porte-lames au docteur est réalisée grâce à la force d'attraction de l'ensemble actionneur magnétique (1, 2 et 3) sur le plateau (4) du porte-lames. L'ensemble actionneur magnétique inclut, au moins, un aimant permanent ou électromagnétique (1), du matériel perméable (2) et du matériel non perméable (3) disposé dans l'armature (b) et cet aimant permanent/électroaimant (1) agissant ou non sur une zone de matériau ferromagnétique (z) disposé sur le porte-lames (s). Cette composition est identifiée ci-dessous comme ensemble de moyens magnétiques (1), (2), (3).The docking of the blade holder to the doctor is achieved by the attraction force of the magnetic actuator assembly (1, 2 and 3) on the plate (4) of the blade holder. The magnetic actuator assembly includes at least one permanent or electromagnetic magnet (1), permeable material (2) and non-permeable material (3) disposed in the armature (b) and the permanent magnet / electromagnet (1) acting or not on an area of ferromagnetic material (z) disposed on the blade holder (s). This composition is identified below as a set of magnetic means (1), (2), (3).

La réalisation représentée sur la figure 1 inclut un élément (11) de guidage dans une rainure longitudinale (r); de telle manière que nous disposons:

  1. a) dans l'armature (b) d'une rainure longitudinale (r) avec une ouverture (ch) et
  2. b) d'un élément de guidage (11) uni au plateau (4) par un corps aux parois coopérant avec les parois de l'ouverture (ch), l'élément de guidage (11) étant emboîté avec un jeu dans la rainure longitudinale (r) de manière à ce que, avec les moyens d'action en situation de désactivation de la force magnétique du plateau (4), il puisse pivoter légèrement par rapport à l'armature (b) et/ou il puisse se déplacer longitudinalement dans celle-ci. Si l'actionneur magnétique (1) ne peut supporter les efforts générés durant le procédé, l'élément de guidage (11) pourra absorber ces efforts.
The realization represented on the figure 1 includes a guide member (11) in a longitudinal groove (r); in such a way that we have:
  1. a) in the frame (b) a longitudinal groove (r) with an opening (ch) and
  2. b) a guide element (11) connected to the plate (4) by a body with walls cooperating with the walls of the opening (ch), the guide element (11) being fitted with a play in the groove longitudinally (r) so that, with the means of action in a situation of deactivation of the magnetic force of the plate (4), it can pivot slightly with respect to the armature (b) and / or it can be move longitudinally in it. If the magnetic actuator (1) can not withstand the forces generated during the process, the guide element (11) can absorb these forces.

Cette solution peut aussi être implantée, comme il est indiqué sur la figure 2, en incluant l'ensemble des moyens magnétiques (1), (2), (3) sous l'élément-guide (11). Cette solution simplifie la fabrication de l'appareil, bien qu'elle demande des aimants plus puissants pour supporter la même charge.This solution can also be implemented, as indicated on the figure 2 , including all the magnetic means (1), (2), (3) under the guide element (11). This solution simplifies the manufacture of the device, although it requires more powerful magnets to support the same load.

La réalisation représentée sur les figures 3a et 3b est semblable à celle représentée sur la figure 1 avec la particularité que l'ensemble de moyens magnétiques (1), (2), (3) sont disposés sur le côté opposé (devant sur la figure 1 et derrière sur la figure 3).The realization represented on figures 3a and 3b is similar to that shown on the figure 1 with the particularity that the set of magnetic means (1), (2), (3) are arranged on the opposite side (front on the figure 1 and behind on the figure 3 ).

L'élément de guidage (11) définit une position intérieure avec des parois coopérant avec les parois d'une ouverture (ch) définie dans un élément supplémentaire de soutien (14) -voir détail, figure 4-.The guide element (11) defines an inner position with walls cooperating with the walls of an opening (ch) defined in an additional support element (14) -see detail, figure 4 -.

Dans cette solution, l'amarrage magnétique est utilisé pour fixer le support porte-lames (s) contre l'armature (b) fixement. Dans ce cas, les efforts que doit réaliser l'amarrage magnétique (1), (2), (3) sont très peu importants et, quand cet amarrage est réalisé, la position du porte-lames (5) par rapport à l'armature (b) est répétitive et les jeux existants au moment du montage sont totalement l'annulés. Le jeu du montage est retiré en activant l'actionneur magnétique (1), (2), (3), le porte-lames s'appuie alors sur l'élément supplémentaire (14), et sur la face conique de l'élément (11). La force du procédé, dans ce cas, va en faveur de l'aimant (1) et le système magnétique est donc moins volumineux que dans les solutions décrites précédemment.In this solution, the magnetic docking is used to fix the blade holder (s) against the frame (b) fixedly. In this case, the efforts to be made by the magnetic mooring (1), (2), (3) are very small and, when this mooring is performed, the position of the blade holder (5) relative to the armature (b) is repetitive and the existing games at the time of editing are totally canceled. The clearance of the assembly is removed by activating the magnetic actuator (1), (2), (3), the blade holder then leans on the additional element (14), and on the conical face of the element (11). The strength of the process, in this case, goes into favor of the magnet (1) and the magnetic system is therefore less bulky than in the solutions described above.

Cette réalisation présente deux états différents, une fois que le porte-lames (5) a été inséré dans le docteur:This embodiment has two different states, once the blade holder (5) has been inserted into the doctor:

1.- Actionneur sans actionnement (figure 3a).1.- Actuator without actuation (Figure 3a).

Dans ce cas, la force réalisée par l'actionneur magnétique est négligeable, et le porte-lames est appuyé sur l'élément supplémentaire (14) et sur l'élément de guidage (11). Le jeu existant dans cette situation est élevé étant donné que l'élément supplémentaire de soutien (14) ne peut que restreindre des mouvements de gauche à droite ainsi que le pivotement sur ce même point.In this case, the force achieved by the magnetic actuator is negligible, and the blade holder is pressed on the additional element (14) and on the guide element (11). The existing game in this situation is high since the additional support member (14) can only restrict left-to-right movements as well as pivoting on that same point.

2.- Actionneur actionné (figure 3b).2. Actuator actuated (Figure 3b).

L'ensemble magnétique (1, 2 et 3) crée une force d'attraction (vers le bas sur la figure) sur le support du porte-lames (4). Cette force d'attraction fait que, si le système pivote sur le point d'appui (e), l'élément de guidage (11) de la partie du porte-lames se déplace vers le haut jusqu'à rencontrer l'extrémité avec le guide (141) de l'élément de soutien (14). Le fait que cet élément de guidage (11) ait une forme conique fait que cet élément se place sur un petit pan qui est réalisé sur le guide (141), de manière à ce que la position d'équilibre soit unique et donc, que la position du porte-lames soit répétitive.The magnetic assembly (1, 2 and 3) creates an attractive force (downward in the figure) on the holder of the blade holder (4). This attractive force causes that, if the system pivots on the fulcrum (e), the guide element (11) of the blade holder portion moves upwards until it meets the end with the guide (141) of the support member (14). The fact that this guide element (11) has a conical shape makes this element is placed on a small pan which is formed on the guide (141), so that the equilibrium position is unique and therefore, that the position of the blade holder is repetitive.

Même si dans les figures précédentes, l'actionneur a été attaché à l'armature du docteur, le fonctionnement de l'appareil est équivalent quand l'actionneur est attaché sur le propre porte-lames (5) et confronté à l'armature (b). La figure 7 indique une des options de cette solution.Although in the previous figures, the actuator has been attached to the doctor's frame, the operation of the apparatus is equivalent when the actuator is attached to the own blade holder (5) and confronted with the armature ( b). The figure 7 indicates one of the options of this solution.

Pour éliminer les jeux dans cette exemple de réalisation, nous procédons de la manière suivante:

  • Quand les moyens magnétiques (1), (2), (3) n'agissent pas, la position du porte-lames par rapport au guide est n'importe quelle position intermédiaire.
To eliminate the games in this embodiment, we proceed as follows:
  • When the magnetic means (1), (2), (3) do not act, the position of the blade holder with respect to the guide is any intermediate position.

Le parcours existant entre les deux positions extrêmes, est le jeu dont disposera le système au moment de réaliser l'extraction ou l'insertion du porte-lames dans l'armature du docteur. Plus le jeu existant est important, plus les opérations d'extraction et d'insertion seront faciles à réaliser. L'action des moyens magnétiques (1), (2), (3) permettent d'annuler ces jeux une fois les opérations d'extraction et d'insertion réalisées. Si aucune opération d'extraction ou d'insertion du porte-lames dans le docteur n'est réalisée, les jeux ne sont plus nécessaires, et ils peuvent uniquement provoquer des conséquences négatives dans le fonctionnement de l'appareil.The path between the two extreme positions is the game that will be available to the system when performing the extraction or insertion of the blade holder in the frame of the doctor. The larger the existing game, the easier it will be to extract and insert. The action of the magnetic means (1), (2), (3) can cancel these games once the extraction and insertion operations performed. If no extraction or insertion of the blade holder into the doctor is performed, the games are no longer necessary, and they can only cause negative consequences in the operation of the device.

Cette solution peut aussi être implantée comme dans la figure 6, en incluant l'ensemble de moyens magnétiques (1), (2), (3) sous l'élément guide (11). Cette solution simplifie la fabrication de l'appareil, même si elle demande des aimants plus puissants pour supporter la même charge.This solution can also be implemented as in the figure 6 , including the set of magnetic means (1), (2), (3) under the guide member (11). This solution simplifies the manufacture of the device, even if it requires more powerful magnets to support the same load.

La réalisation représentée sur la figure 5 est semblable à celle représentée sur la figure 3 avec la particularité de disposer de plus d'un ensemble de moyens magnétiques (1), (2), (3). Elle dispose, concrètement, d'au moins un ensemble de moyens magnétiques (1), (2), (3) sur chaque côté de l'axe de pivotement (e).The realization represented on the figure 5 is similar to that shown on the figure 3 with the particularity of having more than one set of magnetic means (1), (2), (3). It has, in practice, at least one set of magnetic means (1), (2), (3) on each side of the pivot axis (e).

Dans l'exemple de réalisation incluant plus d'un ensemble de moyens magnétiques, le porte-lames est soutenu sur tout le plateau (4) car une action est exercée sur les deux côtés du porte-lames.In the embodiment including more than one set of magnetic means, the blade holder is supported on the entire plate (4) because an action is exerted on both sides of the blade holder.

Toutes les réalisations alternatives n'affectant, ne changeant ou ne modifiant pas le principe présenté dans les revendications sont incluses dans l'objet de l'invention. Par exemple, et, entre autres, il est inclus dans l'objet de l'invention que:

  • l'élément de guidage (11) est disposé centré par rapport à l'axe de pivotement (e) -figures 1, 2, 3, 5, 6 et 7.
  • les moyens magnétiques (1), (2), (3) sont disposés sur le côté de l'axe de pivotement (e) le plus proche de la lame (I) -figure 1-, sur l'autre côté, le plus éloigné de la lame (I) -figures 3, 7-, sur les deux côtés -figure 5-, ou même alignés au centre par rapport à l'axe de pivotement (e) -figures 2, 6-.
All alternative embodiments that do not affect, change or modify the principle presented in the claims are included in the subject of the invention. For example, and among others, it is included in the subject of the invention that:
  • the guide element (11) is arranged centered with respect to the pivot axis (e) - figures 1 , 2 , 3 , 5 , 6 and 7 .
  • the magnetic means (1), (2), (3) are arranged on the side of the pivot axis (e) closest to the blade (I) - figure 1 - on the other side, farthest from the blade (I) - figures 3 , 7 -, on both sides - figure 5 - or even aligned centrally with respect to the pivot axis (e) - figures 2 , 6 -.

Le système d'amarrage peut être disposé de différentes manières, obtenant différentes prestations. Entre autres, les possibilités suivantes sont envisagées :

  • Utiliser plus d'un moyen magnétique (1) -figure 5-
  • Utiliser des moyens (1) devant l'élément de guidage (11)
  • Utiliser des moyens magnétiques (1), (2), (3) au-dessous de l'élément de guidage (11 -figure 6-
  • Utiliser des moyens magnétiques (1), (2), (3) derrière l'élément de guidage(11)
  • Dans toutes les solutions, les moyens magnétiques (1), (2), (3) peuvent être amarrés indifféremment à l'armature (b) ou à la base du porte-lames (s).
  • Les moyens d'actionnement sont mécaniques/manuels et dans l'ensemble (1) les moyens magnétiques sont des aimants, de telle manière que le flux des aimants (1) est orienté ou non vers la zone (z) de matériel ferromagnétique.
  • Les moyens d'actionnement sont des moyens d'activation/désactivation du courant et les moyens magnétiques (1), (2), (3) sont des électroaimants de telle manière qu'ils sont activés/désactivés par connexion/déconnexion électrique, même avec une commande à distance.
The mooring system can be arranged in different ways, obtaining different benefits. Among others, the following possibilities are envisaged:
  • Use more than one magnetic medium (1) - figure 5 -
  • Use means (1) in front of the guide element (11)
  • Use magnetic means (1), (2), (3) below the guide element (11 - figure 6 -
  • Use magnetic means (1), (2), (3) behind the guide element (11)
  • In all the solutions, the magnetic means (1), (2), (3) can be moored indifferently to the armature (b) or to the base of the blade holder (s).
  • The actuating means are mechanical / manual and in the assembly (1) the magnetic means are magnets, such that the flux of the magnets (1) is oriented or not towards the zone (z) of ferromagnetic material.
  • The actuating means are means for activating / deactivating the current and the magnetic means (1), (2), (3) are electromagnets in such a way that they are activated / deactivated by electrical connection / disconnection, even with a remote control.

La même fonction peut être réalisée avec deux types de moyens magnétiques (1), (2), (3) différents: l'actionneur électromagnétique et l'actionneur avec un aimant permanent.

  • L'axe de pivotement (e) est un roulement, et présente, par exemple, une configuration tubulaire.
The same function can be achieved with two different types of magnetic means (1), (2), (3): the electromagnetic actuator and the actuator with a permanent magnet.
  • The pivot axis (e) is a bearing, and has, for example, a tubular configuration.

Claims (9)

  1. Scraping apparatus for the paper industry, of the type which consists of
    a) a scraping blade (I) and support (s) for the scraping blade (I) with pivot shaft (e) with respect to a tray (4), said tray being supported (4) on the frame (b) of the apparatus,
    b) magnetic means (1, 2, 3) to exert magnetic forces between the tray (4) or of an element fixed to it and the frame,
    c) means of action upon the magnetic means to activate/deactivate the magnetic forces between the tray (4) and the frame (b),
    d) in the frame (b), a longitudinal slot (r) with an opening (ch) and
    e) guide element (11) joined to a tray (4) by a body of walls conjugated with walls of the opening (ch), the guide element (11) being fitted with clearance in the longitudinal slot (r) so that with means of action in the situation of deactivating the magnetic force, the tray (4) can pivot slightly with respect to the frame (b) and/or can move longitudinally on it.
  2. Scraping apparatus for the paper industry, according to claim 1, characterized in that the guide element (11) is arranged centrally on the tray (4) with respect to the pivot shaft (e).
  3. Scraping apparatus for the paper industry, according to claim 2, characterized in that with respect to the pivot shaft (e) the magnetic means (1, 2, 3) are arranged on one side and scraping blade (I) is on the other side.
  4. Scraping apparatus for the paper industry, according to claim 2, characterized in that with respect to the pivot shaft (e) the magnetic means (1, 2, 3) and scraping blade (I) are arranged on the same side.
  5. Scraping apparatus for the paper industry, according to claim 2, characterized in that the magnetic means (1, 2, 3) are arranged centrally with respect to the pivot shaft (e).
  6. Scraping apparatus for the paper industry, according to claim 1, characterized in that the magnetic means consist of at least one zone (z) of ferromagnetic material and permanent magnets or some electromagnets (1) arranged in a conjugated manner on the tray-frame assembly.
  7. Scraping apparatus for the paper industry, according to claim 6, characterized in that the means of action are manual means that guide, or do not guide the flow of the magnets toward the ferromagnetic zone (z).
  8. Scraping apparatus for the paper industry, according to claim 6, characterized in that the means of action are means of activation/deactivation of electrical current in the electromagnets.
  9. Scraping apparatus for the paper industry, according to foregoing claims, characterized in that the pivot shaft (e) is a rolling element, such as a tube or bearing.
EP08736714.0A 2007-07-11 2008-02-27 Scraping apparatus for the paper industry Not-in-force EP2169114B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES200701941A ES2310976B1 (en) 2007-07-11 2007-07-11 SCRAPER DEVICE FOR THE PAPER INDUSTRY.
PCT/ES2008/000112 WO2009007473A1 (en) 2007-07-11 2008-02-27 Scraping apparatus for the paper industry

Publications (3)

Publication Number Publication Date
EP2169114A1 EP2169114A1 (en) 2010-03-31
EP2169114A4 EP2169114A4 (en) 2013-11-20
EP2169114B1 true EP2169114B1 (en) 2017-08-30

Family

ID=40192863

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08736714.0A Not-in-force EP2169114B1 (en) 2007-07-11 2008-02-27 Scraping apparatus for the paper industry

Country Status (7)

Country Link
US (1) US7972481B2 (en)
EP (1) EP2169114B1 (en)
CN (1) CN101755091B (en)
BR (1) BRPI0806815A2 (en)
CA (1) CA2672556C (en)
ES (2) ES2310976B1 (en)
WO (1) WO2009007473A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2288120B1 (en) * 2006-05-25 2008-10-16 Jose Joaquin Amonarriz Azcolain CREPING AND CUTTING PROCEDURE AND INSTALLATION.
WO2010099610A1 (en) * 2009-03-03 2010-09-10 Ats Automation Tooling Systems Inc. Multi-mode scroll cam conveyor system

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Publication number Priority date Publication date Assignee Title
NL269602A (en) * 1960-09-27
US3882817A (en) * 1974-01-11 1975-05-13 Black Clawson Co Doctor Blade Assembly
DE3618772A1 (en) * 1986-06-04 1987-12-10 Sohlberg Lars Goeran Method for adjusting the doctor in a printing machine, and device for carrying out such a method
US4860686A (en) * 1986-11-26 1989-08-29 Beloit Corporation Coating width regulating apparatus
US5138970A (en) * 1989-06-22 1992-08-18 J.M. Voith Gmbh Device for coating web material
DE4008435A1 (en) * 1989-06-22 1991-01-03 Voith Gmbh J M PAINTING DEVICE
US5980692A (en) 1997-12-22 1999-11-09 Thermo Web Systems, Inc. Removable doctor blade holder
US6524444B2 (en) 2001-04-24 2003-02-25 Kadant Web Systems Inc. Removable doctor blade holder
DE10358221A1 (en) * 2003-12-12 2005-07-07 Voith Paper Patent Gmbh doctor device
FI116797B (en) * 2004-03-25 2006-02-28 Runtech Systems Oy spring Scraper
CA2601965A1 (en) * 2005-02-22 2006-08-31 Kadant Web Systems, Inc. Removable doctor blade holder with lockable mount
FI117712B (en) 2005-06-17 2007-01-31 Metso Paper Inc Composite scraper assembly
DE102005034452A1 (en) 2005-07-23 2007-01-25 Voith Patent Gmbh scraper device

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Also Published As

Publication number Publication date
ES2310976A1 (en) 2009-01-16
US7972481B2 (en) 2011-07-05
US20100018661A1 (en) 2010-01-28
WO2009007473A1 (en) 2009-01-15
ES2310976B1 (en) 2009-11-19
CA2672556A1 (en) 2009-01-15
CN101755091B (en) 2012-05-02
EP2169114A4 (en) 2013-11-20
EP2169114A1 (en) 2010-03-31
ES2650447T3 (en) 2018-01-18
CA2672556C (en) 2014-06-03
CN101755091A (en) 2010-06-23
BRPI0806815A2 (en) 2011-09-13

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