EP0288025B1 - Messerkopf für einen Kutter - Google Patents

Messerkopf für einen Kutter Download PDF

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Publication number
EP0288025B1
EP0288025B1 EP88106288A EP88106288A EP0288025B1 EP 0288025 B1 EP0288025 B1 EP 0288025B1 EP 88106288 A EP88106288 A EP 88106288A EP 88106288 A EP88106288 A EP 88106288A EP 0288025 B1 EP0288025 B1 EP 0288025B1
Authority
EP
European Patent Office
Prior art keywords
ring
knife
bolts
axially
head according
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 - Lifetime
Application number
EP88106288A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0288025A3 (en
EP0288025A2 (de
Inventor
Hans Wälchli
Walter Schmidt
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT88106288T priority Critical patent/ATE56636T1/de
Publication of EP0288025A2 publication Critical patent/EP0288025A2/de
Publication of EP0288025A3 publication Critical patent/EP0288025A3/de
Application granted granted Critical
Publication of EP0288025B1 publication Critical patent/EP0288025B1/de
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

  • a cutter head is known from DE-C 22 12 374. With this knife head, the segment-shaped knives are clamped between the rings and discs made of stainless steel and centered and secured by two bolts pressed into the rings. Because the knives are made of a different steel than the rings and disks, electrolytic corrosion of the knives at the contact points with the rings and disks can occur in the wet atmosphere of the cutter. In addition, the rings and disks can show slight damage over time due to handling, which can lead to locally excessive contact forces. This can lead to knife fatigue fractures.
  • the invention has for its object to develop a cutter head according to the preamble of claims 1 and 7 such that the above disadvantages are avoided. This object is achieved by the characterizing features of claims 1 and 7, respectively.
  • FIG. 1 for the sake of a better overview, only one half of an axial section through a cutter head of a cutter is shown.
  • the knife head is mounted on a horizontal, driven knife shaft 1 and clamped on the shaft 1 with a clamping device, shown as screw 2.
  • a sleeve 3 is pushed onto the shaft 1 and secured against rotation by means of a wedge 4.
  • the sleeve 3 lies against a shoulder 5 of the shaft 1. It has an external hexagon 6 which is delimited by a shoulder 7.
  • Two washers 8 are pushed onto the hexagon 6, one of which rests on the shoulder 7 and the other on the head of the screw 2.
  • the disks 8 have an axial recess 9 facing each other.
  • a plastic insert ring 10 is inserted into the recesses 9.
  • the insert 10 has an axial shoulder 12 on the inside. In the untensioned position, the end face 13 of the disk 8 lies approximately in the same radial plane as the end face 14 of the collar 11 within the insert 10.
  • segment-shaped knives 20 each with two centering bores 21 and four further, larger bores on the same pitch circle diameter, are clamped in three knife planes at a distance of 30 ° from one another.
  • the knives 20 are spaced apart from one another by plastic rings 22, 23, which are connected in a rotationally fixed manner to the sleeve 3 by means of an internal hexagon 24 (FIG. 2).
  • the rings 22, 23 are encased by a tire 25 made of stainless steel.
  • the tires 25 are axially somewhat shorter than the rings 22, 23.
  • Twelve axially parallel bolts 30, 31 are inserted into the rings 22, 23 with the same pitch circle diameter and evenly spaced from one another.
  • the bolts 30 project beyond the ring 22 axially on both sides, the bolts 31 only over the ring 23 on one side.
  • the bolts 30, 31 each have a radial flange 32, 33 that bears against a shoulder 34, 35 of the rings 22, 23.
  • the bolts 30 are axially secured by a welded-in plastic ring 36 and the bolts 31 by a welded-in plastic disc 37.
  • the disk 37 is sunk into the ring 23 by an amount which is somewhat larger than the amount by which the bolts 30 protrude from the ring 22.
  • the knives 20 in the middle knife plane can thus optionally be omitted.
  • the holes 15 also serve the same purpose.
  • the inserts 10 are somewhat thicker than the dimension by which the bolts 30, 31 protrude from the rings 22, 23.
  • the washers 8 and the rings 22, 23 are first pushed onto the hexagon 6 and the screws 2 are loosely screwed in.
  • the segment-shaped knives 20 are attached to two bolts 30, 31 each.
  • the knives can be offset by an integral multiple of 30 ° in the three knife levels. This enables the knife head to be adapted to the sausage meat to be produced in the cutter.
  • screw 2 is tightened.
  • the disks 8 are elastically deformed somewhat in the manner of disc springs, so that the periphery of the inserts 10 presses against the knives 20.
  • the cutters 20 are clamped between plastic parts 10, 22, 23 so that the electrolytic corrosion is avoided. Since the plastic is much softer than the knife steel, even with slightly damaged rings 22, 23 and inserts 10, a uniform axial pressure is achieved, so that there are no excessively high, locally concentrated contact forces. In particular, the edges of the tires 25 and the bundles 11, which are particularly exposed with regard to handling damage, do not come into contact with the knives 20. This can avoid the risk of fatigue fractures. In addition, in the embodiment according to the invention, the rings 22, 23 are lighter and therefore easier to handle. Because of the metal tires 25, the shaft 1 can be driven at high speed without the risk of the rings 22, 23 being destroyed.
  • the bolts 30, 31 are arranged approximately in the radial center of the rings 22, 23.
  • the knives 20 therefore have a clamping section 40 in the form of a semicircular ring, in which the pitch circle radius 41 of the centering bores 21 and the further bores 44 corresponds approximately to the mean value between the inner radius 42 and the outer radius 43.
  • a crescent-shaped knife blade 45 projects from the clamping section 40 with an arcuate cutting edge 46.
  • the outer circumference with the knife radius R of the blade 45 is ground to form a relatively blunt emulsifying edge 47.
  • the emulsifying edge 47 is not reground.
  • the knife 20 shown in FIG. 3 is particularly suitable for the production of sausage meat for cooked sausages.
  • the ratio of the radius of curvature A of the cutting edge 46 to the knife radius R is approximately 0.79 and the ratio of the distance B of the center of curvature M of the cutting edge 46 from the knife axis 48 to the knife radius R is approximately 0.51.
  • the cutting angle a of the tangent 49 of the cutting edge R with the radial direction 50 is little dependent on the cutting radius r. It fluctuates between 49 ° and 59 ° over the radius r.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Knives (AREA)
  • Harvester Elements (AREA)
  • Milling Processes (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
EP88106288A 1987-04-24 1988-04-20 Messerkopf für einen Kutter Expired - Lifetime EP0288025B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88106288T ATE56636T1 (de) 1987-04-24 1988-04-20 Messerkopf fuer einen kutter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1589/87 1987-04-24
CH1589/87A CH673599A5 (es) 1987-04-24 1987-04-24

Publications (3)

Publication Number Publication Date
EP0288025A2 EP0288025A2 (de) 1988-10-26
EP0288025A3 EP0288025A3 (en) 1989-03-22
EP0288025B1 true EP0288025B1 (de) 1990-09-19

Family

ID=4213947

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88106288A Expired - Lifetime EP0288025B1 (de) 1987-04-24 1988-04-20 Messerkopf für einen Kutter

Country Status (4)

Country Link
EP (1) EP0288025B1 (es)
AT (1) ATE56636T1 (es)
CH (1) CH673599A5 (es)
DE (1) DE3860634D1 (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19809800C1 (de) * 1998-03-09 1999-04-08 Goetz Gmbh Spezialkuttermesser Vorrichtung zur Halterung von Kuttermessern
DE102022107548A1 (de) 2022-03-30 2023-10-05 Astor Schneidwerkzeuge Gmbh Montage-, schwingungs- und hygieneoptimiertes Kuttermesser

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE889125C (de) * 1951-09-07 1953-09-07 Kraemer & Grebe K G Maschinen Klemmvorrichtung zum Befestigen von Kuttermessern
CH319208A (de) * 1954-01-19 1957-02-15 Meier Otto Fleischkutter
CH357997A (de) * 1957-05-13 1961-10-31 Giesser Walter Kuttermesser
DE2212374C2 (de) * 1972-03-15 1986-01-23 C. Hoegger & Cie. AG, Gossau Spannkopf zum Festspannen der Messersätze auf der Messerwelle einer Fleischzerkleinerungsmaschine
CH565592A5 (es) * 1972-08-31 1975-08-29 Tecmed Ag
DE3044632C2 (de) * 1980-11-27 1982-11-11 Fritz 7981 Vogt Knecht Messerkopf für Fleischkutter

Also Published As

Publication number Publication date
EP0288025A3 (en) 1989-03-22
CH673599A5 (es) 1990-03-30
ATE56636T1 (de) 1990-10-15
EP0288025A2 (de) 1988-10-26
DE3860634D1 (de) 1990-10-25

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