EP0238953A2 - Tête à lames pour dispositifs de coupe rotatifs - Google Patents

Tête à lames pour dispositifs de coupe rotatifs Download PDF

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Publication number
EP0238953A2
EP0238953A2 EP87103718A EP87103718A EP0238953A2 EP 0238953 A2 EP0238953 A2 EP 0238953A2 EP 87103718 A EP87103718 A EP 87103718A EP 87103718 A EP87103718 A EP 87103718A EP 0238953 A2 EP0238953 A2 EP 0238953A2
Authority
EP
European Patent Office
Prior art keywords
bolt
knife
knife blade
head according
cutter
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.)
Granted
Application number
EP87103718A
Other languages
German (de)
English (en)
Other versions
EP0238953A3 (en
EP0238953B1 (fr
Inventor
Meinrad Stadelmann
Gert Stadelmann
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.)
Flema AG
Original Assignee
Flema 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 Flema AG filed Critical Flema AG
Publication of EP0238953A2 publication Critical patent/EP0238953A2/fr
Publication of EP0238953A3 publication Critical patent/EP0238953A3/de
Application granted granted Critical
Publication of EP0238953B1 publication Critical patent/EP0238953B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16—Details
    • B02C18/18—Knives; Mountings thereof
    • B02C18/20—Sickle-shaped knives

Definitions

  • the invention relates to a cutter head for rotating cutting devices, consisting of a plurality of pairs of diametrically opposed or axially offset cutter blades and between the cutter blade pairs arranged and non-rotatably attachable to a drive shaft holding disks, with each cutter blade having a first, for setting the radius of the circulating circle of the cutter blades.
  • Bolt projecting at right angles from the knife base is assigned as a pivot bearing between the knife blade and the holding disk and a second bolt engages in a slot opening on the knife blade at a distance from the first bolt.
  • Such cutting devices are e.g. used in a meat cutter.
  • These meat cutters have a ring-shaped cutter bowl that has a useful content of approx. 30 to 750 liters.
  • These cutter bowls consist of a horizontal, ring-shaped, divided bowl that rotates horizontally around the center.
  • a fixed knife shaft At the center of the ring cross-section is a fixed knife shaft on which one or more pairs of knife blades are clamped, which rotate at up to 6,000 revolutions per minute.
  • the ring-shaped cutter bowl rotates with its tip through the area of the rotating knife blades.
  • the cutter bowl is filled with uncooled to frozen meat and partly with flake ice and ice snow.
  • the knife blades have to withstand the enormous centrifugal forces in addition to shock loads during the cutting process and vibration problems as well as in the attachment. In most of the known designs, the knife blades are pressed together by tensioning the holding washers, so that there is no anti-slip protection, which leads to serious, insignificant safety defects.
  • the present invention has for its object to provide a cutter head of the type mentioned, in which there is a simple but absolutely secure locking and pivoting ability of the knife blades.
  • the second bolt is adjustable in an elongated hole running on a circular arc area with respect to the first bolt and is held in a force-fitting and form-fitting manner on the knife blade and at least two bores for insertion on each retaining disc for each knife blade of the two bolts protruding from the knife blade in the same direction are provided.
  • the second bolt is adjustable on a circular arc area with respect to the first bolt, that is to say that this elongated hole, in which the second bolt engages, lies on a circular arc, the center point of which represents the axis of the first bolt.
  • the positive connection serves practically only to hold this bolt captively on the knife blade.
  • the positive connection between the bolt and the knife blade or the bolt engaging in a hole in the holding disc results in a secure holding of the knife blade on the holding discs without the risk of loosening under high centrifugal forces. Loosening can occur even when tightening a screw. If, on the other hand, this bolt is held or engages in a form-fitting manner, there is no possibility that the knife blade can unintentionally twist about the axis of the first bolt.
  • the distance between the cutting circle line and the surface of the cutter bowl is usually about 1 to 3 mm.
  • the cutter head according to the invention is characterized by good adjustability of the cutter blades and by absolute locking of the cutter.
  • cutter bowl is not shown in the drawings. This is also because the knife head according to the invention can be used not only with cutter bowls in the meat processing industry, but also for any other type of cutting device in which knife blades are to be arranged in an adjustable and absolutely securely fixed manner.
  • the knife head essentially consists of a drive shaft 1, a plurality of pairs of diametrically opposed knife blades 2 and 3 as well as holding disks 4 arranged between two pairs of knife blades 2, 3.
  • This bolt 5 is at right angles from the knife base 6.
  • a second bolt 7 is arranged at a radial distance from the first bolt 5 on a circular arc area with respect to the first bolt 5 and is adjustable on the knife base 6 and can be fixed thereon in a non-positive and positive manner.
  • At each holding disc 4, at least two bores 8, 9 are provided for each knife blade 2, 3 for receiving the two bolts 5, 7 protruding from the knife blade 2, 3 in the same direction.
  • a screw connection can be provided here in a simple manner, since this screw connection does not have to transmit any special forces.
  • an elongated hole 12 running in the shape of a circular arc is provided on the knife blade 2, 3 in the adjustment region of the second bolt 7, which extends in an arcuate manner in accordance with the radius to the bolt 5.
  • a fastening screw 14 penetrates the elongated hole 13 and can be screwed into a central threaded bore 15 of this second bolt 7. It can be seen from this that this fastening screw 14 only takes over the function of holding the bolt 7 in the mutual locking of the ribs 11, 12.
  • the elongated hole has bevelled edges 16 on its side facing away from the attached bolt 7, so that the countersunk head 17 of the fastening screw 14 can be received in this area of the elongated hole 13. As a result, the next following holding disk 4 can in turn rest against the opposite surface 18 of the knife blade 3.
  • these ribs 11, 12 are aligned parallel to one another, so that a correct engagement between the opposing ribs 11, 12 is always possible in every rotational position. Furthermore, these ribs 11 on the knife blades 2, 3 run approximately transversely to the longitudinal extent of the elongated hole 13, that is also transversely to the centrifugal force acting.
  • the second bolt 7 has at its toothed end a collar 19 which is enlarged relative to the free end, and also in the holding disc 4 accordingly a corresponding bore 20 of larger diameter is provided.
  • each knife blade 2, 3 has two spaced-apart, freely projecting extensions 21, 22, the first bolt 5 being arranged or formed on one extension 21 and the second bolt 7 on the other extension 22.
  • the bolts 5 and 7 are at a relatively large distance from one another, so that additional security is provided by the large leverage effect of the two fastening points.
  • These extensions 21 and 22 have beak-shaped ends 23 and 24, with the inner contours 25 of one beak-shaped ends 23 and the outer contours 26 of the other beak-shaped ends 24 each abutting one another at least at points in the same pivoting position of two diametrically opposite knife blades 2, 3.
  • the drive shaft 1 is polygonal in cross-section, with central recesses 27 corresponding to this cross-sectional shape being provided in the individual holding disks 4. There is therefore the possibility of angularly displacing the successive pairs of knife blades 2, 3 relative to one another by correspondingly adjusting the angle of the holding disk 4 with respect to the drive shaft 1.
  • further bores 8, 9 and 20 are provided in pairs for receiving the bolts 5, 7 diametrically opposite knife blades 2, 3 , 3 are also rotated in relation to the holding disks 4 in different angular positions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
EP19870103718 1986-03-28 1987-03-14 Tête à lames pour dispositifs de coupe rotatifs Expired - Lifetime EP0238953B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT844/86 1986-03-28
AT84486A AT386966B (de) 1986-03-28 1986-03-28 Messerkopf fuer rotierende schneideinrichtungen

Publications (3)

Publication Number Publication Date
EP0238953A2 true EP0238953A2 (fr) 1987-09-30
EP0238953A3 EP0238953A3 (en) 1988-07-27
EP0238953B1 EP0238953B1 (fr) 1990-05-09

Family

ID=3501073

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870103718 Expired - Lifetime EP0238953B1 (fr) 1986-03-28 1987-03-14 Tête à lames pour dispositifs de coupe rotatifs

Country Status (3)

Country Link
EP (1) EP0238953B1 (fr)
AT (1) AT386966B (fr)
DE (1) DE3762571D1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4015843A1 (de) * 1990-05-17 1991-11-21 Knecht Gmbh Maschbau Kuttermesser
CN112275409A (zh) * 2020-11-10 2021-01-29 北京建筑大学 自调间距型格栅刀片组及格栅
CN112753297A (zh) * 2019-11-01 2021-05-07 石河子大学 一种果园浅层除草装置
CN116602334A (zh) * 2023-06-13 2023-08-18 胡建飞 一种用于钉螺的螺尾去除设备
CN117920414A (zh) * 2024-02-05 2024-04-26 中国环境科学研究院 基于智能识别系统进行筛分轴动态调节的煤矸石筛分机

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29502807U1 (de) * 1995-02-21 1995-04-20 Kutter- und Gerätebau Wetter GmbH, 35216 Biedenkopf Messerhalterung für Schüsselkutter
PL72497Y1 (pl) * 2020-04-27 2022-04-04 Iker Miroslaw F P H U Iker Nóż do kutra misowego

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH418873A (de) * 1965-02-24 1966-08-15 Flessati Franz Messerkopf
AT286810B (de) * 1967-07-12 1970-12-28 Laska Maschf M U F Messerkopf für Fleischkutter
DE2653335A1 (de) * 1976-11-24 1978-06-01 Ernst Schertler Messersatz fuer fleischschneidmaschinen

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4015843A1 (de) * 1990-05-17 1991-11-21 Knecht Gmbh Maschbau Kuttermesser
US5345848A (en) * 1990-05-17 1994-09-13 Knecht Maschinenbau Gmbh Cutter
CN112753297A (zh) * 2019-11-01 2021-05-07 石河子大学 一种果园浅层除草装置
CN112753297B (zh) * 2019-11-01 2024-04-16 石河子大学 一种果园浅层除草装置
CN112275409A (zh) * 2020-11-10 2021-01-29 北京建筑大学 自调间距型格栅刀片组及格栅
CN116602334A (zh) * 2023-06-13 2023-08-18 胡建飞 一种用于钉螺的螺尾去除设备
CN117920414A (zh) * 2024-02-05 2024-04-26 中国环境科学研究院 基于智能识别系统进行筛分轴动态调节的煤矸石筛分机

Also Published As

Publication number Publication date
DE3762571D1 (de) 1990-06-13
EP0238953A3 (en) 1988-07-27
EP0238953B1 (fr) 1990-05-09
ATA84486A (de) 1988-04-15
AT386966B (de) 1988-11-10

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