EP1680228B1 - Cutter knife - Google Patents

Abstract

The invention relates to a cutter knife (8), a cutter head disk (1) and a system including the inventive cutter head disk and the inventive knife, wherein the cutter knife includes a longitudinal bore enabling only one cutter knife to be arranged on the cutter head disk, the longitudinal bore thereof being compatible with the pin. The scaling on the longitudinal bore makes it possible to verify the position of the cutter knife in relation to the cutter head disk.

Description

The present invention relates to a cutter knife, a cutter head disc and a cutter head consisting of the cutter head disc according to the invention and the knife according to the invention.

Cutters for shredding and mixing fresh or frozen food, such as meat, have a cutter head, which consists of a plurality of successively arranged knives, which are attached to so-called cutter head discs and are for example from AT 348886 , of the DE 196 06 188 , of the US 2,721,593 as well as the DE 1757972 known. The knives must be arranged on the cutterhead discs in a specific configuration to achieve a satisfactory cutting result. Furthermore, in order to achieve a good cutting result and also for safety reasons, it is important that certain knives are combined only with the knife blade disks provided for this purpose, which was not always guaranteed in the case of knives or knife head rests according to the prior art.

It was therefore the object of the present invention to provide a cutter knife that does not have the disadvantages of the prior art.

The object is achieved according to the invention with a knife according to claim 1.

It was extremely surprising for the person skilled in the art and it was not to be expected that the knife according to the invention could only be used on knife blade disks intended for this purpose. The knives can not be reversed, so that the knife according to the invention provides an installation aid for the operating personnel.

According to the invention, the knife has at least one means with which it can be attached to the cutter head disk. Furthermore, it has, offset from the central axis of the cutter, a recess which accommodates a recess arranged in the cutter head disk during assembly of the cutter on the cutter head disk.

This recess can have any shape and size familiar to the person skilled in the art. According to the invention, however, it is an oblong hole, the width of which substantially corresponds to the diameter of a preferably cylindrical bolt which protrudes from the cutter head disk into the oblong hole. The slot has a scale. The present invention has the advantage that it can be checked on the basis of the elongated hole, whether the knife occupies a previously determined position relative to the cutter head disc. Furthermore, the scaling can be used to determine whether an original or a knife which has already been shut off once must be inserted on the respective cutter head disk when the fasteners are seated correctly.

Another object of the present invention is a cutter head according to claim 2.

It was extremely surprising for the person skilled in the art and not to be expected that with the cutter head according to the invention an incorrect combination of knives and cutter head disks can be ruled out. The welteren is prevented with the cutter head according to the invention, that the blades are arranged side-inverted on the cutter head discs. Based on the scaling of the slots in the knives, the position of the knives relative to the cutter head discs can be checked.

The knife head according to the invention has the advantage that only knives are attached to it, which have a recess whose shape, size and position is compatible with the bulge in the Mossentopfschelbe. Furthermore, the cutter head disc according to the invention provides an installation aid for the operating personnel with which it can be prevented that the blades are mounted laterally reversed on the cutter head disc.

According to the invention, the knife head disc has at least one recess in which at least one eccentric retaining pin can be attached. The position of the knife on the knife head disc is determined by means of the eccentric retaining pin. With regard to the eccentric retaining bolts and the corresponding attachment of the blade to the cutter head disc, reference is made to the co-pending patent application DE 103 16 303.4 directed.

Figur 1

zeigt das erfindungsgemäße Messer

Figur 2

zeigt zwei Originalmesser, die an einer Messerkopfscheibe angeordnet sind

Figur 3

zeigt die Kombination aus Messern und Messerkopfscheibe gemäß Figur 2, wobei es sich in dem vorliegenden Fall jedoch um an deren Spitze gekürzte Messer handelt

Figur 4

zeigt eine Kontrollvorrichtung

In the following, the invention is based on the FIGS. 1 to 4 explained. These explanations are merely exemplary, do not limit the general idea of the invention and apply equally to the invention Knife, the knife head disc according to the invention, the cutter head according to the invention and the control device according to the invention.

FIG. 1

shows the knife according to the invention

FIG. 2

shows two original knives, which are arranged on a knife head disc

FIG. 3

shows the combination of knives and cutterhead according to FIG. 2 however, in the present case, they are knives shortened at the tip

FIG. 4

shows a control device

In FIG. 1 the knife 8 according to the invention is shown, which rotates according to the arrow indicated by reference numeral 9 in a cutter (not shown). Accordingly, the knife has a cutting edge 10 at its lower radius. With the two holes 4, the knife is attached to the cutter head disc. According to the invention, the knife has a slot 5, which is arranged offset to the central axis 3 of the knife 8. This slot has a scale 6, with which the position of the blade relative to the cutter head disc can be seen, which in the Figures 2 and 3 will be explained in more detail.

FIG. 2 shows two blades 8, which are arranged on a cutter head disc 1. The knife head disk 1 has four recesses, each of which receives an eccentric retaining pin 4, with which the knives 8 are attached to the knife head disk 1. The eccentric retaining bolts 4 have a circular disk-shaped head 4 'which is eccentrically arranged on its base 4 ", the black-drawn surfaces projecting further out of the center than the white-painted surfaces, this eccentricity allowing the knife with the bolts in two A knife head disc is supplied as a set with a plurality of eccentric retaining bolts, but differing only in the degree of eccentricity thereof. The head 4 'and the foot 4 "are each identical. Furthermore, a bolt 7 is arranged in the cutter head disk, which protrudes into the recess 5. The bolt is not on any of the Symmetryeaches the Meßkopfscheibe and offset from the central axis 3 of the knife arranged so that the knife can not be mounted mirror-inverted on the cutter head disc, with the result that the blade 10 of the knife would not be arranged in the direction of rotation of the cutter head disc. Furthermore, the bolt prevents that knives that have no corresponding hole can be mounted on the cutterhead disc. As can be seen from the enlarged circle section, the recess 5 has a scale which corresponds to the respective eccentric retaining bolt. The upper scale is chosen for an eccentric retaining bolt, where the blade can be placed in a 0 position or 6 mm outwards on the cutterhead disk. Accordingly, the lower scale is provided for an eccentric retaining bolt, in which the knife can be arranged offset in the 0 position or 3 mm outwards. In the present case, these are knives that have never been limited in length. Accordingly, the line on the bolt corresponds to the scale 0. The cutter head disk consists of a metallic core 16, which is encased with a plastic ring 17. In the present case, the plastic ring shrunk onto the metallic core. For this, the core 16 is cooled and / or the plastic ring is heated.

FIG. 3 shows the cutter head disk / knife assembly according to FIG. 2 , wherein the blade tips were shortened in the present case by 6 mm. Accordingly, the eccentric pins were rotated from their 0 position to the 6 mm position to ensure that the distance between the blade tip and cutter bowl remains constant. This rotation of the eccentric disc can also be detected on the basis of the scale, because the stroke on the bolt 7 is no longer in the 0 but in the 6 mm position. Those skilled in the art will recognize that the scaling on the one hand allows to check whether the knife is seated on the correct bolt and whether with correctly seated bolts a shortened or a knife in original length must be placed.

FIG. 4 shows a device for controlling the knife length after grinding. For this, the knife 8 is placed on a turntable 13 and secured by a bolt 11, which in turn protrudes into the recess 5, on the device. Spaced from the turntable 13, the Set up a template with which the length of the knife can be checked. The template 12 can be rotated by the screw 14 in clockwise and counterclockwise directions by 90 ° and fixed in the appropriate position. Depending on the size of the cutter, the template 12, in addition to its fixation, can also be displaced in the direction represented by the double arrow 15. In the upper illustration, an original knife whose tip has not yet been shortened is clamped on the device. Accordingly, the template is in the 0 position, which also according to the arrangement FIG. 2 equivalent. The illustration below illustrates the situation after the knife has been shortened. Using the template, it was determined that the knife had been shortened by 6 mm and the operator knows that the eccentric pins must be brought into an appropriate position.

LIST OF REFERENCE NUMBERS

1

Cutter head disk

2

bulge

3

central axis

4

Middle hole

5

recess

6

scaling

7

bolt

8th

knife

9

Direction of rotation of the knife

10

cutting edge

11

Means for attaching a knife to the control device

12

Means for determining the correct position of the eccentric bolts

13

turntable

14

screw

15

double arrow

16

core

17

jacket

18

eccentric retaining bolt

Claims (4)

1. Knife (8) having at least one means (4) with which the knife can be attached to a knife head disc (1) and an aperture (5) which is provided offset from the centre axis (3) of the knife (8) and accommodates a projection (2) arranged in the knife head disc (1), the aperture (5) being an elongated hole which preferably accommodates a pin (7), characterized in that the elongated hole (5) has a scale (6).
2. Knife head comprising at least one knife head disc (1) for a meat cutter and at least one knife (8) according to Claim 1, said knife (8) being attached to the knife head disc (1), eccentric retaining pins (18) of the knife head disc being inserted into the holes (4) of the knife, and the elongated holes (5) of the knives accommodating pins (7) of the knife head disc, the pins not being arranged on one of its axes of symmetry but rather so as to be offset from a centre axis (3) of the knife (8).
3. Knife head according to Claim 2, characterized in that the correct position of the eccentric pins (18) can be detected with reference to the scale (6).
4. Knife head according to one of the preceding claims, characterized in that the knife head disc has a preferably metallic core (16) for accommodating the drive shaft, and the core (16) is enclosed by a casing (17), preferably a plastic casing, the casing (17) being shrunk onto the core (16).

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