EP0040432B1 - Couteau râcleur pour cylindres, en particulier pour des cylindres de moulins de meunerie - Google Patents

Couteau râcleur pour cylindres, en particulier pour des cylindres de moulins de meunerie Download PDF

Info

Publication number
EP0040432B1
EP0040432B1 EP81103852A EP81103852A EP0040432B1 EP 0040432 B1 EP0040432 B1 EP 0040432B1 EP 81103852 A EP81103852 A EP 81103852A EP 81103852 A EP81103852 A EP 81103852A EP 0040432 B1 EP0040432 B1 EP 0040432B1
Authority
EP
European Patent Office
Prior art keywords
knife
rollers
scraper
roller
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.)
Expired
Application number
EP81103852A
Other languages
German (de)
English (en)
Other versions
EP0040432A1 (fr
Inventor
Robert Linzberger
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
Priority claimed from DE19803023824 external-priority patent/DE3023824C2/de
Application filed by Buehler AG filed Critical Buehler AG
Publication of EP0040432A1 publication Critical patent/EP0040432A1/fr
Application granted granted Critical
Publication of EP0040432B1 publication Critical patent/EP0040432B1/fr
Expired legal-status Critical Current

Links

Images

Classifications

    • 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 knife scrapers for rollers, in particular for rollers of a milling roller mill, with a pivotable knife bar receiving the knife, over the length of which several mechanical tensioning elements connected to the knife bar are provided, by means of which the protruding from the knife bar with little elastic bending Knife surface the cutting edge of the knife can be pressed against the roller.
  • a knife wiper is e.g. B. from GB-A-204959.
  • Knife scrapers are used on roller mills, especially in the milling industry, as auxiliary elements which are of great importance for the operational safety of the roller mills.
  • the knife scrapers it is necessary that the knife scrapers always keep the rollers free of adhering flour particles in order to prevent the ground material from sticking to the rollers. can wind up Agriculture Because locally adhering product leads to a change in the grinding conditions and harbors the risk that rollers can be damaged during the grinding process.
  • a safe function of the knife wipers used is therefore very important in the interest of the proper working of the entire roller mill, which is why such knife wipers also have to be continuously monitored and adjusted.
  • One of the main disadvantages of previous knife scrapers is an uncomfortable setting of the knives. Because, as a rule, the knives have to be adjusted by hand after grinding the rollers and when inserting new knives. Each knife is set very precisely in the manner of a straightedge by means of a counterweight. If a good setting does not succeed immediately, then the knife is often forced to fit the rollers better with additional weights, etc., and the disadvantages resulting from this are accepted.
  • lever arms are provided over the length of the knife holder, whereby these lever arms can be regarded as bracing elements, since each such lever arm can be adjusted at least in one direction (independently of the other such levers) by means of an associated hand setting wheel: this means that over each each lever locally a more or less strong bending of the cutter bar can be effected and this also in the event that the two other lever arms lying laterally next to a lever arm have a different position.
  • the individual adjustment wheels can be used to apply bending or tensioning of the cutter bar in one direction with a certain independence from one another.
  • the setting levers have a groove open on one side for engagement with the associated setting wheel, they can only be subjected to tension in one direction towards the closed end of the groove by the setting wheel in question, and accordingly only bending in this direction is possible.
  • the knife bar cannot be bent in the other direction via the relevant lever.
  • Another disadvantage of this known solution is that it has a rather complicated structure and nevertheless, because of the shown flexibility of the cutter bar in only one direction, whose completely independent adjustability over the width of the cutter bar is not guaranteed.
  • the object of the invention is to develop a knife scraper of the type mentioned at the outset, in which the disadvantages of the abovementioned solutions are avoided as far as possible and are particularly convenient and inexpensive to manufacture with little construction effort quick adjustment of the knife is possible.
  • the knife should also be designed to be self-adjusting in normal operation.
  • the bracing elements comprise a continuous counterweight which is connected to the knife bar via at least three clamping screws arranged approximately transversely to the knife surface.
  • the knife scraper according to the invention makes it possible that even less experienced operators can immediately set the knife scraper very precisely.
  • the knife scraper according to the invention allows both an adaptation of the shape of the knife to the local roller contour and a pressing of the knife to generate a scraping force, the two functions being influenced separately or being able to be influenced separately.
  • the measures according to the invention moreover make it much easier to adapt the knife to the shape of the associated roller than in the case of conventional knife scrapers.
  • the knife is advantageously assigned adjusting screws which support the knife in the direction of the knife surface (and in the direction of the knife edge).
  • a particularly easy replacement of the knife can be achieved in that the knife is loosely inserted in the receiving groove of the knife bar and is preferably supported in the direction of the groove width by means of a chuck, such as a flat filler rod.
  • the counterweight is preferably displaceable on the clamping screws relative to the cutter bar.
  • the knife area protruding from the knife bar protrudes only slightly and the knife area is essentially bent within the knife bar by a corresponding bending thereof via the bracing elements.
  • a grinding roller 1 is shown only partially and a further grinding roller 1 'is only hinted at.
  • each roller 1, 1 ' is assigned its own knife scraper 2 (each mirror image of one another).
  • a knife 3 with a cutting edge 4 is loosely inserted into a milled receiving groove 6 of a knife bar 5, the knife 3 resting on one side on one side surface of the milling in the knife bar and held in position by a chuck 7 which is also loosely inserted.
  • the cutter bar 5 is rotatably supported on both end sides by means of pins 8 so that it can carry out a small pivoting movement.
  • the cutting direction of the knife 3 is given with the coordinate «S».
  • the knife bar 5 is relatively large, viewed in the cutting direction “S” of the knife 3, with respect to its width “B”. Seen in the cutting direction “S”, the cutter bar 5 is still very rigid, and on its width “B, again in the cutting direction S, two set screws 9 are attached over the entire length of the cutter bar 5, each by a lock nut 10 for unwanted purposes Are secured.
  • the center of the counterweight 12 (cf. FIG. 2) can be set to a desired distance A from the pin 8 and the desired contact pressure of the cutting edge 4 of the knife 3 against the roller 1 can be achieved will.
  • the cutting edge 4 of the knife 3 continuously contacts the roller 1 with a force corresponding to the given leverage ratios and cleans the roller of adhering flour or grain parts.
  • the knife 3 is set after the entire unit has been assembled as follows:
  • z. B. generated by a lamp, light, whereby a possibly existing gap X can be recognized very quickly and very accurately by the operator or adjuster.
  • the lock nut 13 and the wing nut 14 By adjusting the lock nut 13 and the wing nut 14, the locally occurring gap X can be eliminated by appropriately tightening or bending the cutter bar 5 or the thin cutter 3.
  • three dash-dotted lines 0, P and Q are shown in FIG. 2 in order to outline three possibilities for a change in shape of the knife that occurs.
  • the knife 3 can be tilted to a certain extent in the cutting direction by the wing nuts 9. If the two different setting options in the knife wiper shown in the serve significantly different functions, it is nevertheless advisable to first align the knife 3 in the cutting direction “S”, ie by adjusting one or both adjusting screws 9, as precisely as possible, and only then using the tensioning elements 11, 12, 13, 14 and 15 Precise adjustment of the knife edge 4.
  • the cutter bar 5 is preferably made of a relatively elastic material, e.g. B. aluminum, the counterweight 12, on the other hand, which should also be a support for the bracing elements, preferably made of steel. The use of three clamping screws is very useful, but more than three screws can be used distributed over the length of the knife.
  • the cutter bar 5 which can have a relatively large length of approximately 1 m, can be elastically clamped with only a small force in the transverse direction by only a few tenths of a millimeter or even by a few millimeters, while the cutter 3 is set in the cutting direction and after the scraper has been fully adjusted can be left to the game of forces of the counterweight 12 set for the specific application.
  • the knife 3 is applied to the entire length of the grinding roller 1 with the desired force.
  • An advantageous embodiment of a knife scraper according to the invention can also consist in that the knife surface protruding beyond the knife bar is only relatively short, e.g. B. only 1-2 centimeters long, compared to their depth in the holder of the cutter bar itself and at the same time by the clamping elements essentially the cutter bar (and thereby also the knife surface contained in it) bends.
  • the knife region protruding from the knife bar becomes relatively rigid and there is no risk of undesired knife flutter occurring, while the desired knife bending takes place mainly within the knife bar.
  • the protruding area of the knife is then only slightly bent by its pressure on the roller. With such an embodiment, even with particularly thin knives, the success desired according to the invention can be achieved without impairment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Crushing And Grinding (AREA)

Claims (5)

1. Racloir à lame pour cylindres (1, 1'), en particulier pour les cylindres d'un moulin à cylindres de meunerie, comprenant une barre porte-lame (5) pivotante dans laquelle est montée la lame (3), sur la longueur de laquelle sont répartis plusieurs éléments de serrage mécaniques (11 à 15) reliés à la barre porte-lame (5) et au moyen desquels, par une flexion élastique limitée de la surface (F) de la lame qui est en saillie par rapport à la barre porte-lame (5), le tranchant (4) de la lame (5) peut être appliqué contre le cylindre (1, 1'), caractérisé en ce que les éléments de serrage (11 à 15) comprennent un contre-poids (12) continu qui est relié à la barre porte-lame (5) par au moins trois vis de serrage (11) disposées sensiblement transversalement à la surface (F) de la lame.
2. Racloir à lame selon la revendication 1, caractérisé en ce que des vis de réglage (9) sont associées à la lame (3), ces vis supportant la lame (3) en direction de sa surface (F) qui est tournée vers le tranchant (4).
3. Racloir à lame selon la revendication 2, caractérisé en ce que la lame (3) est disposée de façon libre dans la rainure de réception (6) de la barre porte-lame (5) et est supportée en direction de la largeur de la rainure par interposition d'une garniture (7).
4. Racloir à lame selon la revendication 2 ou 3, caractérisé en ce que le contre-poids (12) peut être déplacé par rapport à la barre porte-lame (5) sur les vis de serrage (11).
5. Racloir à lame selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la surface (F) de la lame (5) en saillie par rapport à la barre porte-lame (5) n'est que légèrement en saillie et en ce que la flexion de la surface (F) de la lame s'effectue essentiellement à l'intérieur de la barre porte-lame (5) par l'intermédiaire d'une flexion correspondante de celle-ci au moyen des éléments de serrage (11 à 15).
EP81103852A 1980-05-20 1981-05-19 Couteau râcleur pour cylindres, en particulier pour des cylindres de moulins de meunerie Expired EP0040432B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH391380 1980-05-20
CH3913/80 1980-05-20
DE3023824 1980-06-25
DE19803023824 DE3023824C2 (de) 1980-05-20 1980-06-25 Messerabstreifer für Walzen, insbesondere für die Walzen eines Müllereiwalzenstuhles

Publications (2)

Publication Number Publication Date
EP0040432A1 EP0040432A1 (fr) 1981-11-25
EP0040432B1 true EP0040432B1 (fr) 1984-03-21

Family

ID=25694153

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81103852A Expired EP0040432B1 (fr) 1980-05-20 1981-05-19 Couteau râcleur pour cylindres, en particulier pour des cylindres de moulins de meunerie

Country Status (4)

Country Link
US (1) US4434522A (fr)
EP (1) EP0040432B1 (fr)
JP (1) JPS5939187B2 (fr)
WO (1) WO1981003289A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230126189A1 (en) * 2021-10-22 2023-04-27 Metso Outotec USA Inc. Roller crusher and method for operating thereof
US12076729B2 (en) 2021-10-22 2024-09-03 Metso Outotec USA Inc. Roller crusher and method for arrangement thereof
US12097506B2 (en) 2021-10-22 2024-09-24 Metso Outotec USA Inc. Roller crusher and method for operating thereof

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4760598A (en) * 1981-07-23 1988-07-26 Racal Data Communications Inc. Coded data transmission system
DE3610970A1 (de) * 1986-04-02 1987-10-08 Zweegers & Zonen P J Rundballenpresse fuer landwirtschaftliches halmgut
DE3839169A1 (de) * 1988-11-19 1990-05-23 Bayer Ag Abstreifvorrichtung fuer drehfilter
SE469034B (sv) * 1991-09-02 1993-05-03 Valmet Karlstad Ab Anordning foer justering av kraeppningsbetingelserna
DE19913513A1 (de) * 1999-03-25 2000-09-28 Buehler Ag Messerabstreifer für Walzen und Walzenstuhl hierzu
SE0100505L (sv) * 2001-02-16 2002-07-23 Btg Eclepens Sa Självjusterande blad
CN102614957B (zh) * 2012-03-29 2013-12-18 太原重工股份有限公司 一种破碎辊的轴向定位装置
CN106661520B (zh) * 2014-03-07 2019-08-13 宝洁公司 制造装置
EP3572153B1 (fr) * 2018-05-25 2020-08-05 Bühler AG Broyeur à cylindres pourvu d'un racloir
US12508597B2 (en) 2021-03-10 2025-12-30 Metso Usa Inc. Spur wheel scraper
US11938488B2 (en) * 2021-12-09 2024-03-26 Metso Outotec USA Inc. Roller crusher and method for operation thereof
US12508595B2 (en) 2023-06-07 2025-12-30 Metso Usa Inc. Roller crusher and a method for operating the same
US12508598B2 (en) 2023-06-07 2025-12-30 Metso Usa Inc. Roller crusher and method for operation thereof

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US743955A (en) 1903-04-23 1903-11-10 Nordyke & Marmon Company Scraper for roller-mills.
US1411907A (en) 1919-12-23 1922-04-04 Essex Rubber Company Scraper
GB204959A (en) * 1922-11-21 1923-10-11 Joseph Baker Sons & Perkins Lt Improvements in or relating to scrapers for use with moving or rotating surfaces such as drums, rollers and the like
GB440918A (en) * 1934-12-29 1936-01-08 Thomas Robinson & Son Ltd Improvements relating to roller mills for the milling of cereals and other materials
US2399538A (en) 1944-12-08 1946-04-30 American Optical Corp Squeegee device
US3040442A (en) 1959-04-27 1962-06-26 Lyle S Overton Blade assembly for drum dryers or the like
DE1220703B (de) * 1963-08-28 1966-07-07 Ind G M B H Abstreifvorrichtung fuer Walzen
US3378876A (en) 1965-08-23 1968-04-23 Procter & Gamble Adjustable doctor blade assembly for yankee dryers and like machines

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230126189A1 (en) * 2021-10-22 2023-04-27 Metso Outotec USA Inc. Roller crusher and method for operating thereof
US11925942B2 (en) * 2021-10-22 2024-03-12 Metso Outotec USA Inc. Roller crusher and method for operating thereof
US12076729B2 (en) 2021-10-22 2024-09-03 Metso Outotec USA Inc. Roller crusher and method for arrangement thereof
US12097506B2 (en) 2021-10-22 2024-09-24 Metso Outotec USA Inc. Roller crusher and method for operating thereof

Also Published As

Publication number Publication date
JPS5939187B2 (ja) 1984-09-21
US4434522A (en) 1984-03-06
WO1981003289A1 (fr) 1981-11-26
JPS57500501A (fr) 1982-03-25
EP0040432A1 (fr) 1981-11-25

Similar Documents

Publication Publication Date Title
EP0040432B1 (fr) Couteau râcleur pour cylindres, en particulier pour des cylindres de moulins de meunerie
DE1552633C3 (de) Vorrichtung zum Beschneiden mindestens einer Kante eines Blechbandes
DE2518243A1 (de) Verfahren und vorrichtung zum schneiden von glas
DE69315337T2 (de) Maschine zum schneiden von bogen aus einer papierbahn und zum gleichzeitigen schneiden eines querstreifens
DE2533201A1 (de) Verfahren und vorrichtung zum saegen eines laenglichen werkstueckes
EP0497778B2 (fr) Dispositif pour le pliage d'une tole
EP0287848B1 (fr) Cisaille à couper les bandes longitudinales
DE2913421A1 (de) Verfahren und vorrichtung zum abstreifen von ueberschuessiger streichmasse von einer laufenden bahn
EP0418476A2 (fr) Dispositif d'enduction d'un matériau en bande passant le long d'un contre-rouleau
DE3619244A1 (de) Verfahren und vorrichtung fuer die streichblattbeschichtung einer sich bewegenden materialbahn
EP0289799B1 (fr) Cisaille circulaire pour rognement des matériaux plats, en particulier de la tôle et des rubans métalliques
EP0739692B1 (fr) Dispositif pour la coupe de produits alimentaires
EP0137837A1 (fr) Dispositif de raclage.
DE3302861A1 (de) Haeckselvorrichtung, insbesondere feldhaecksler, mit einstellbarer gegenschneide
EP1704971B1 (fr) Méthode et dispositif de coupe pour produits alimentaires ayant une forme allongée
DE1502929A1 (de) Blechschere
DE3239899C2 (de) Vorrichtung an einer Stabstahlschere zum Abscheren von Abschnitten genauer Länge
DE2755000A1 (de) Einstellvorrichtung fuer die messer eines zerspaners, insbesondere eines messerringzerspaners
DE69405469T2 (de) Baugruppe zum Laden einer Rakelklinge
DE2655845C2 (de) Schneidmaschine, insbesondere für Tabak
DE7716319U1 (de) Vorrichtung zur herstellung einer abrundung an zwei seiten eines werkstueckes
DE2731047A1 (de) Fuehrungsvorrichtung fuer eine feile zum schleifen der zaehne einer saege
DE3023824C2 (de) Messerabstreifer für Walzen, insbesondere für die Walzen eines Müllereiwalzenstuhles
DE3204182C2 (de) Bandmesserspaltmaschine
DE2359281C3 (de) Schneidvorrichtung

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): FR GB IT

17P Request for examination filed

Effective date: 19811130

ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): FR GB IT

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: FR

Ref legal event code: CD

ITTA It: last paid annual fee
REG Reference to a national code

Ref country code: FR

Ref legal event code: CL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19970410

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19970411

Year of fee payment: 17

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980519

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980531

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19980519

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST