EP3003057A1 - Système de racle - Google Patents

Système de racle

Info

Publication number
EP3003057A1
EP3003057A1 EP14725068.2A EP14725068A EP3003057A1 EP 3003057 A1 EP3003057 A1 EP 3003057A1 EP 14725068 A EP14725068 A EP 14725068A EP 3003057 A1 EP3003057 A1 EP 3003057A1
Authority
EP
European Patent Office
Prior art keywords
knife bar
knife
stripping
clamping
bar
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Withdrawn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
EP14725068.2A
Other languages
German (de)
English (en)
Inventor
Tobias NÜSSLE
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.)
Buehler AG
Original Assignee
Buehler AG
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 Buehler AG filed Critical Buehler AG
Priority to EP14725068.2A priority Critical patent/EP3003057A1/fr
Publication of EP3003057A1 publication Critical patent/EP3003057A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B1/00—Cleaning by methods involving the use of tools
    • B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
    • B08B1/16—Rigid blades, e.g. scrapers; Flexible blades, e.g. wipers
    • B08B1/165—Scrapers
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
    • A23G1/00—Cocoa; Cocoa products, e.g. chocolate; Substitutes therefor
    • A23G1/04—Apparatus specially adapted for manufacture or treatment of cocoa or cocoa products
    • A23G1/10—Mixing apparatus; Roller mills for preparing chocolate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
    • B02C4/04—Crushing or disintegrating by roller mills with two or more rollers specially adapted for milling paste-like material, e.g. paint, chocolate, colloids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/28—Details
    • B02C4/40—Detachers, e.g. scrapers

Definitions

  • the invention relates to a cutter bar for a
  • Scraper system for stripping product from a roll in a rolling mill for applying a doctor blade to a roll, a knife holder system for a scraper system and a
  • the known stripping mechanism used in this case contains three components: a knife bar, a knife holder and the actual doctor blade or "knife". Only the tip of the knife is in contact with the roller.
  • the cutter bar is equipped with a pressure spindle, a
  • Lever device hydraulically or pneumatically pressed against the roller
  • the angle of attack is usually adjustable.
  • the knife bar is usually arranged displaceable and / or pivotable and can be brought into a position in which the doctor blade can be changed.
  • a knife usually a spring steel strip is used, which is supplied on rolls and as needed (eg roll length of the rolling mill) is cut off from the roll of suitable length.
  • the life of the knife depends on the type of knife
  • Cocoa mass or chocolate mass is, the faster the knife wears off by abrasion.
  • Knife bar is clamped. Preference is given to using double spring-loaded toggle clamps for clamping the knife.
  • the clamping force acts in the immediate vicinity of the
  • toggle levers Depending on the length of the scraper blade, a whole range of toggle levers must be used, which must either be operated one after the other individually in order to clamp or loosen or mechanically connected.
  • the invention has for its object to avoid the disadvantages of the known, to provide a fast changeable and easy to handle stripping system for a rolling mill.
  • the object underlying the invention is achieved by a knife bar for a stripping system for applying a Abstreifmessers to a roller.
  • the knife is for stripping of product from a roll in a rolling mill.
  • at least one pressure element is provided which
  • the clamping force is configured to assume a first state in which it can contribute to exerting a clamping force for fixing the doctor blade in the cutter bar, and to assume a second state in which it does not contribute to exerting the clamping force, in particular its expansion in the direction the clamping force is changeable.
  • a doctor blade which is inserted in the cutter bar, are clamped against the cutter bar, preferably the doctor blade can be clamped between the pressure element and the cutter bar.
  • the pressure element itself can apply a clamping force to the doctor blade or the
  • a pressure element located inside the cutter bar allows a compact design of the cutter bar.
  • the pressure element is simultaneously protected by the cutter bar, so that it is less prone to contamination and thus to a deterioration of the function.
  • the pressure element can change its position or change its extent to get from the first to the second state and vice versa.
  • the pressure element can be mechanically operated, for example, a wedge element can be moved or an eccentric can be rotated.
  • the pressure element can be operated electromagnetically, for example, driven piezoelectrically change its extension in the direction of the clamping force.
  • the pressure element may be an elastic element or a
  • Be spring element which exerts a force in the clamping direction due to its internal tension and can be compressed, for example, with a mechanical, hydraulic or pneumatic force.
  • the pressure element is preferably pneumatically or hydraulically operated, so it can change its extension or position, for example, due to a pneumatic or hydraulic force.
  • the knife clamp bar may include various types of printing elements.
  • the cutter bar has a conduit for guiding a fluid, by means of which a pneumatic or hydraulic pressure for attaching the Abstreifmessers can be built on the cutter bar.
  • the coupling can be mechanical, electro-magnetic, hydraulic or pneumatic.
  • mechanically operated pressure element are mechanically coupled and
  • the coupling can also consist in that a mechanical force is transmitted via a fluid substantially simultaneously to a plurality of pressure elements.
  • the force on the doctor blade can be transmitted synchronously in several places, preferably on the entire length of the Abtreifmessers.
  • the doctor blade can be attached in this way very easy and there is no risk of slippage while a pressure element after another is operated.
  • the fluid is either a gas, in particular compressed air, or a liquid, for example water or a hydraulic oil, in particular according to DIN 51524
  • Processing of food can also be
  • a hydraulic or pneumatic pressure can be built up quickly and evenly throughout the entire line.
  • the line is inside the cutter bar
  • the line may be a rigid pipe, in which a force at the end of the line is transferable.
  • the line is flexible or at least
  • the cutter bar may have exactly one conduit or multi-conduit conduit system for guiding the fluid in which the hydraulic or pneumatic pressure is preferably coupled in time, in particular in a specific order or simultaneously, can be built up.
  • Hydraulic pressure namely, when the line is filled under pressure with the fluid, a holding force on a in the
  • Knife blade to be used to be generated.
  • the pneumatic or hydraulic pressure can be practical
  • Print elements can be generated synchronously.
  • the line system can also be arranged so that the holding force builds up successively along the Abstreifmessers or first at previously defined points.
  • the arrangement of the line or lines determines the arrangement of the line or lines
  • the force can be distributed evenly over the doctor blade.
  • the cutter bar is preferably with a compressed air or
  • Hydraulic supply for establishing a pneumatic or hydraulic pressure connectable.
  • the lines or the conduit system in particular at least one corresponding port on which the line or the conduit system can be detachably coupled to a pneumatic or hydraulic supply.
  • the supply includes, for example, a
  • Compressed air dispenser a hydraulic oil reservoir, a hydraulic pump and / or a hydraulic cylinder.
  • the mill needs more pneumatic or
  • Hydraulic systems for example for pressing the cutter bar to the roller, at whose supply the cutter bar can be connected.
  • connection between the cutter bar and the compressed air or hydraulic supply can be fixed or detachable.
  • cutter bar For repair or maintenance of the cutter bar is preferably separable from the pneumatic or hydraulic supply.
  • the cutter bar is preferably connectable to a compressed air or hydraulic control.
  • a compressed air or hydraulic control about the control of the pneumatic or hydraulic pressure can be turned on and off, and the strength of the built-up holding force can be adjusted.
  • connection between the cutter bar and the compressed air or hydraulic control can be fixed or detachable.
  • Hydraulic pressure can then be regulated automatically to a suitable setpoint for the respective situation.
  • the connection between the cutter bar and the compressed air or hydraulic control can be fixed or detachable.
  • the cutter bar comprises a base body and a cutter bar insert, wherein the
  • Line or the conduit system for guiding the fluid preferably in the cutter bar insert is arranged.
  • the cutter bar is usually connected to the roller mill via a device which presses the stripping device against the roller and over which the angle of attack is adjustable. Preferably, this connection to the main body, while the doctor blade is held by the cutter bar insert. For a maintenance, a repair or a coupling of the pneumatic or hydraulic system or changing the Abstreifmessers the stripping system must therefore not necessarily be solved by the roller mill.
  • the main body is for the general rigidity of the
  • the cutter bar insert can be in a solid construction, in particular if it comprises a rigid conduit system.
  • the knife bar insert may be a fluid carrying flexible member that may be incorporated in the art
  • Fluid supply expands.
  • the cutter bar may have exactly one cutter bar insert or multiple cutter bar inserts. The majority of
  • Knife bar inserts can work together to hold a
  • Abstreifmessers be used and / or for, in particular alternative, mounting of different Abstreifmessern.
  • different cutter bar inserts can be used, for example, inserts with different piping systems for fixing different Abstreifmesser.
  • the cutter bar comprises a pressure element in the form of a clamping element, which under the action of a
  • corresponding fluid is buildable in the line, is movable, in particular with respect to the cutter bar insert.
  • the clamping element couples the pressure, which is built up by the fluid in the line or the conduit system, directly or indirectly to the doctor blade. It thus causes a clamping force on the doctor blade and / or the knife holder.
  • the clamping element is a rigid bar, in front of the outputs of the in the cutter bar insert
  • the clamping element is pushed away from the line system arranged in the cutter bar insert, preferably directly or indirectly against it
  • the pipe or pipe system can be flexible
  • the blade bar insert are in contact, or the line or the conduit system has openings, so that the fluid in direct
  • Tightness of the conduit system is not as critical, such as in a hydraulic system in which
  • Fluid is used and which usually has a closed conduit system.
  • the cutter bar comprises exactly one clamping element or a plurality of clamping elements, in particular each one
  • Blade insert one or more pipe openings or one or more flexible pipe sections are assigned.
  • Knife bar can be used, for example, a
  • a knife bar insert may have a profile that only allows the use of a particular doctor blade or knife holder with a corresponding counter-profile.
  • knife bars of similar construction can in principle be used on various types of roller mill, for which different doctor blades are necessary in each case.
  • a profile of the cutter bar insert is selected, so that only the right doctor blade or the
  • the clamping element can not move transversely to the doctor blade and / or knife holder, it is preferably guided.
  • the guide can be achieved by a corresponding bearing or by guide elements, which prevents movement transversely to the direction of the clamping force.
  • at least one pin is provided, on which the clamping element is movably mounted and thus can be guided, so that a movement of the clamping element is only possible in the axial direction of the pin and thus in the direction of the clamping force or opposite.
  • the storage in particular the at least one pin, is arranged on the main body or on the cutter bar insert.
  • the clamping element preferably has in turn at least one recess, preferably a circular recess, through which a guide element, in particular the pin, is guided.
  • a plurality of guide elements in particular pins are provided so that guarantees a parallel guidance and canting is prevented.
  • a plurality of recesses are preferably provided in the clamping element.
  • the cutter bar comprises at least one sealing element, in particular an O-ring.
  • the sealing element prevents the escape of fluid from the cutter bar.
  • the sealing element seals the gap between
  • Clamping element and knife bar insert or between clamping element and main body Clamping element and knife bar insert or between clamping element and main body.
  • a recess is preferably provided for each sealing element, in which the sealing element can be inserted during assembly.
  • the sealing element is preferably a flexible component which, when inserting the Abstreifmessers, in particular between
  • the clamping element moves, in particular the clamping element moves away from the cutter bar insert.
  • the sealing element expands to its original size and thus ensures that the entire fluid pressure on the clamping element - and thus on the doctor blade - acts and no fluid escapes through the gap between the clamping element and cutter bar insert.
  • the sealing element is preferably around the openings, the
  • each opening with an O-ring
  • the object underlying the invention is also achieved by a knife bar, in particular as above
  • the cutter bar comprises a base body which in
  • Extrusion allows the production of a low-vibration lightweight body, which in terms of its mass a high
  • the extruded body has a high
  • the cutter bar in particular the body, is thus stable and yet easy to install.
  • a cutter bar according to the invention consists at least partially of aluminum, a
  • a fiber-reinforced plastic for example a carbon fiber (CFRP) or glass-fiber reinforced plastic
  • CFRP carbon fiber
  • glass-fiber reinforced plastic in particular the basic body consists of aluminum, a
  • a fiber reinforced plastic for example a carbon fiber (CFK) or glass fiber reinforced plastic.
  • CFRK carbon fiber
  • Aluminum is an easy-to-process material that is also well-suited for use in the food industry.
  • main body As
  • the object underlying the invention is also achieved by a knife holder system for a stripping system for stripping product from a roll in a rolling mill with a knife bar as described above and a knife holder.
  • the stripping system serves to apply a doctor blade to a roller.
  • Knife holder needed. This counters the doctor blade
  • a knife holder can have a profile that only requires the use of a particular doctor blade with a
  • knife bars of similar construction can in principle be used on various types of roller mill, for which different doctor blades are necessary in each case.
  • a profile of the knife holder is selected, so that only the right doctor blade can be used with the corresponding counter profile.
  • the object underlying the invention is also achieved by a stripping system for stripping product from a roll in a rolling mill with a cutter bar as described above, a knife holder and a doctor blade.
  • the doctor blade can, in particular insoluble, with the
  • Knife holder be connected so that both parts can be rolled up together, storable and can be used in the cutter bar.
  • the doctor blade and the knife holder are present as separate parts.
  • the object underlying the invention is also achieved by a stripping system for applying a
  • the stripper system is used to strip product from a roll in a rolling mill.
  • the object underlying the invention is also achieved by a method for attaching a Abstreifmessers in a stripping system, in particular as described above, wherein a holding force is generated on the doctor blade, characterized in that the retaining force is generated hydraulically or pneumatically.
  • the object underlying the invention is also achieved by a use of a sealing element, in particular an O-ring in a cutter bar as described above.
  • the scraper blade experiences constant wear and must be replaced regularly. For this, the pneumatic or hydraulic pressure is changed each time and the
  • Sealing element loaded or unloaded.
  • the squeezing and relieving of the sealing element leads after some time to wear, so that the sealing element must be replaced.
  • An exchange of the sealing element or the sealing elements may also be necessary if a thinner or thicker doctor blade is to be used and a larger or smaller gap is to be bridged.
  • FIG. 1 is a first sectional view of an example of a stripping system according to the invention.
  • Figure 2 is a second sectional view of the same
  • Figure 3 is a side view of a first example of a
  • Figure 4 is a side view of a second example of a
  • FIG. 5 shows plan views of examples of stripping systems with
  • FIG. 1 shows a first sectional view of an example of a stripping system 10 according to the invention for applying a doctor blade 1 to a roller not explicitly shown in the figure.
  • the stripping system 10 includes a knife holder system 20 and a doctor blade 1.
  • the knife holder system 20 comprises a knife bar 2, which comprises a conduit 3 for guiding a fluid, by means of which a pneumatic or hydraulic pressure for fastening the
  • Abstreifmessers 1 can be built on the cutter bar 2.
  • the line is a compressed air line connected to a compressed air supply not explicitly shown
  • the cutter bar 2 comprises a base body 4 and a
  • Knife bar insert 5 The main body 4 is as
  • the line 3 to guide the compressed air is in
  • Blade insert 5 arranged.
  • the cutter bar 2 further comprises a clamping element 6, which under the action of the pneumatic force against the
  • Blade insert 5 is movable.
  • the clamping element 6 couples the pneumatic force to the knife holder 7 and thus fixes the doctor blade 1 to the cutter bar 2.
  • FIG. 2 shows a second sectional view of the same
  • the main body 4 has a groove-like opening 13, in which the cutter bar insert 5, the clamping element 6 and the
  • Insert knife holder 7 The material thicknesses are matched to one another such that a gap 14 of approximately 0.5 mm exists between the cutter bar insert 5 and clamping element 6.
  • the cutter bar 2 comprises sealing elements 11, in this case O-rings.
  • the sealing elements bridge the gap 14
  • Scraper system is in a prestressed state. There are still the production-related tolerances to a Gap size of up to approx. 0.25 mm between knife holder 7 and base body 4, to be bridged.
  • the sealing elements 11 are arranged in depressions 12 which are provided in the cutter bar insert 5.
  • FIG. 3 shows a side view of a first example of a cutter bar insert 5.
  • pins 8 are provided, which are not shown in the figure for guiding the guide
  • the cutter bar insert 5 has round recesses 12, each about an opening 14 of the
  • O-rings can be inserted as a sealing element.
  • FIG. 4 shows a side view of a further example of a cutter bar insert 105.
  • the cutter bar insert 105 On the cutter bar insert 105, pins 108 are provided, which serve to guide the clamping element not explicitly shown in the figure.
  • the cutter bar insert 105 has a groove-like depression 112, in which openings 114 of the Line system are arranged. In the recess 112, a not explicitly illustrated strip-like sealing element can be inserted.
  • FIG. 5 shows plan views of stripping systems, in which different combinations of respectively suitable clamping inserts 106; 206 and knife holders 107; 207 are used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Polymers & Plastics (AREA)
  • Crushing And Grinding (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Cleaning In General (AREA)
  • Confectionery (AREA)
  • Knives (AREA)
  • Earth Drilling (AREA)

Abstract

L'invention concerne une barre de coupe (2) pour un système de racle (10) pour le raclage d'un produit d'un rouleau dans un laminoir, un système de support de lame (20) et un système de racle (10). Pour la fixation de la lame dans la barre de coupe est prévu un élément de pression (6) qui est disposé à l'intérieur de la barre de coupe. La barre de coupe (2) présente une conduite (3) pour le guidage d'un fluide au moyen duquel une pression pneumatique ou hydraulique peut être appliquée pour fixer la lame de raclage (1) à la barre de coupe (2).
EP14725068.2A 2013-05-31 2014-05-13 Système de racle Withdrawn EP3003057A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14725068.2A EP3003057A1 (fr) 2013-05-31 2014-05-13 Système de racle

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP13169975 2013-05-31
EP14725068.2A EP3003057A1 (fr) 2013-05-31 2014-05-13 Système de racle
PCT/EP2014/059697 WO2014191191A1 (fr) 2013-05-31 2014-05-13 Système de racle

Publications (1)

Publication Number Publication Date
EP3003057A1 true EP3003057A1 (fr) 2016-04-13

Family

ID=48534271

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14725068.2A Withdrawn EP3003057A1 (fr) 2013-05-31 2014-05-13 Système de racle

Country Status (8)

Country Link
US (1) US20160121371A1 (fr)
EP (1) EP3003057A1 (fr)
JP (1) JP2016525934A (fr)
CN (1) CN105407733A (fr)
BR (1) BR112015029769A2 (fr)
CA (1) CA2913204A1 (fr)
RU (1) RU2015155826A (fr)
WO (1) WO2014191191A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3572153B1 (fr) * 2018-05-25 2020-08-05 Bühler AG Broyeur à cylindres pourvu d'un racloir
JP7025759B2 (ja) * 2018-06-25 2022-02-25 株式会社井上製作所 ロールミル
CN117696511B (zh) * 2024-02-06 2024-04-19 洛阳市洛龙区河渠事务中心 一种橡胶坝水下清污头及具有该清污头的清污设备

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE674076C (de) * 1937-08-08 1939-04-05 Johann Aebi Abschabevorrichtung an Ein- und Mehrwalzenmuehlen
BE544538A (fr) * 1955-01-28
DE1607539A1 (de) * 1967-02-21 1969-09-18 Miag Muehlenbau & Ind Gmbh Abstreiflineal
DE10218778B4 (de) * 2002-04-26 2004-07-15 Rieter-Werke Gmbh Schaber für die Walzen einer Walzenmühle
US6942734B2 (en) * 2003-02-20 2005-09-13 Metso Paper, Inc. Treatment equipment
FI117712B (fi) * 2005-06-17 2007-01-31 Metso Paper Inc Komposiittirakenteinen kaavinsovitelma
FI119823B (fi) * 2007-10-10 2009-03-31 Metso Paper Inc Kaavinlaitteisto ja menetelmä rainanmuodostuskoneelle liikkuvan pinnan kaapimiseksi sekä teräpidin
EP2341781A1 (fr) * 2008-09-05 2011-07-13 Bühler AG Lame racleuse pour un broyeur à cylindres
US8898851B2 (en) * 2010-12-10 2014-12-02 Kadant, Inc. Doctor blade holder
DE102011007321B4 (de) * 2011-04-13 2013-03-07 Metso Paper, Inc. Rakelhalter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2014191191A1 *

Also Published As

Publication number Publication date
RU2015155826A (ru) 2017-07-06
CA2913204A1 (fr) 2014-12-04
US20160121371A1 (en) 2016-05-05
BR112015029769A2 (pt) 2017-07-25
CN105407733A (zh) 2016-03-16
JP2016525934A (ja) 2016-09-01
WO2014191191A1 (fr) 2014-12-04

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