EP1615752B1 - Cutter head for a meat cutter - Google Patents

Abstract

Cutter head plate for a meat slicer has a metal core (2), into which the drive shaft fits. This is embedded in a plastic sleeve (3). Independent claims are included for: (a) a cutter blade with a radius of fixing center to blade radius ratio of 0.3 - 0.4, especially 0.37 - 0.38; (b) a system comprising the cutter head plate and two cutter blades with bores, into which eccentric locking bolts are fitted; (c) a cutter head comprising the system which is fitted on a shaft; (d) a system for fitting the cutter head on a shaft in which a filler plate is fitted over the cutter blades;and (e) a system for fitting the cutter head on a shaft in which the cutter head plate and the cutter blades or filler plates are premounted on a bush which is then fitted on the shaft.

Description

The present invention relates to a cutter head disc for a meat cutter to which at least one knife is attachable and which has a preferably metallic core for receiving the drive shaft. Furthermore, the present invention relates to a system consisting of a cutter head disc and two knives and a cutter head consisting of several systems and a method for mounting a cutter head.

Knife heads of the generic type are known from the prior art. For example, document US 3,491,818 discloses a knife for a meat slicer with a cutter head mounted on a shaft with a tapered shank. On the shaft a sleeve with an annular rosette is arranged. On the sleeve alternately arranged the cutting edges with locking discs, wherein the adjusting discs produce a same axial distance of the cutting from each other. To adjust the blades, micrometer set screws are used. The attachment of the cutter head to the conical shaft by means of a nut.

However, these cutter heads have the disadvantage that they are only comparatively expensive to install, because the cutter head disks are usually only mounted together with the knives on the cutter shaft. Furthermore, the cutter heads are comparatively unhygienic because the material to be cut can settle within the cutter head disc and between the cutter head disc and the blades mounted thereon.

The document D2 (DE 304 079 C) discloses a machine for cutting meat, in which two groups of knives are arranged perpendicular to each other so that the cut material is detected by both groups of knives. The knife groups can be removed from the machine as a whole to clean them.

The present invention is therefore based on the object to provide a cutter head disc for a meat cutter, which does not have the disadvantages of the prior art.

The problem is solved by a knife head disc according to claim 1.

The sheath is made of plastic. This feature of the present invention has the advantage that the cutter head disc has a comparatively low weight, which has a positive effect during transport, during assembly and at high rotational speeds. Furthermore, plastic sheaths are comparatively elastic, so that the knife head discs and the associated knives brace well against each other and sealing.

Preferably, the core has recesses in each of which at least one eccentric retaining bolt for the knife can be attached.

The object is further achieved by a cutter head disc according to claim 1, the recesses, in each of which an eccentric retaining bolt for the knife is attached. Preferably, the eccentric retaining bolts are preassembled on the cutterhead disk before the cutterhead disk is mounted on the cutterhead shaft.

The following statements apply to all objects of the present invention.

The knife head disk preferably has magnets on which the knife can be fixed to the knife head disk.

In a further preferred embodiment, the cutter head disc according to the invention has a sealing edge, preferably on both sides of the disc. Preferably, this sealing edge is formed as a raised circular ring.

Further preferably, the cutter head disc according to the invention has recesses into which, for example, weights for balancing the weight of the disc together with the knife can be inserted.

In a further preferred embodiment, the cutter head disc has shoulders between which the foot of the knife can be attached. Preferably, the height of the shoulder is substantially equal to or slightly less than the thickness of the foot of the knife, and more preferably the distance of the shoulders is substantially equal to the width dimension of the foot of the knife.

The knife head disc according to the invention has the advantage that no cutting material can penetrate between the preferably metallic core and the plastic sheath. Furthermore penetrates through the sealing edge no cutting material between the cutterhead and the mounted blades, which also represents a significant hygienic advantage. The knife head disc according to the invention can first be mounted on the knife head shaft without a knife. Only then are the knives mounted on the knife head disc and held with the magnets on the knife head disc, before the knife head disc, including knives on the shaft, for example, with a clamping nut, is braced, which is a considerable ease of assembly .. The transport of knife blade including knives is with the knife head disc according to the invention considerably simplified, because the blades and the cutter head disc are easy to disassemble and therefore can be transported separately from each other.

The knife head disc according to the invention is simple and inexpensive to manufacture.

Another object of the present invention is a system consisting of a cutter head disc according to the invention and two knives, each having two receptacles, preferably bores, wherein the eccentric pins are inserted into the bore.

Another aspect of the present invention is a system consisting of the knife head disc according to the invention, a knife and a filling mat, the knife and the filling plate each having two recesses, preferably bores, are introduced through the eccentric pin.

Preferably, the filler plate is preassembled on the cutterhead disk before the cutterhead disk is mounted on the cutterhead shaft.

In a preferred embodiment of the system according to the invention, the filler plate recesses, through which the dynamic imbalance can be compensated.

In a further preferred embodiment of the system according to the invention, the knives and / or the filling plate with the magnets are reversibly attached to the cutter head disc. This embodiment of the present invention has the advantage that the cutter head disc can be attached to the cutter head shaft without the blades and the blades are subsequently mounted by guiding the recesses of the blades over the eccentric pins and forming a releasable frictional connection between the metallic blade and the magnets ,

Preferably, the cutter head disk or the blades mounted thereon are designed such that the ratio of clamping radius B to cutter radius A is 0.3 to 0.4, preferably 0.37 to 0.38. Further preferably, the ratio of knife radius A to receiving width C is 1.4 to 2.0, preferably 1.6 to 1.7. This preferred embodiment of the system according to the invention has the advantage that the knives withstand higher axial loads and the knife head disc is not formed so large that the volume flow of the cut material is hindered.

The system according to the invention has the advantage that no cutting material can penetrate between the metallic core and the casing. Furthermore penetrates through the sealing edge no cutting material between the cutterhead and the mounted blades, which also represents a significant hygienic advantage.

Another object of the present invention is a cutter head having a plurality of inventive systems. These systems are arranged one behind the other on a cutterhead shaft and are clamped on the cutterhead shaft with a clamping nut.

The knife head according to the invention is particularly suitable for very high rotational speed of the knife tip, preferably> about 145 m / sec. The compensation of the dynamic imbalance takes place in the area of the cutter head disks; i.e. in the knife level. All knives of the knife head have the same length and can therefore be arranged on any knife head disk within the knife head. The knives do not have to be assigned to a specific meat cutter, which greatly simplifies knife logistics. A malfunction of the cutter head by poor balancing is avoided. The cutter head according to the invention is completely self-contained so that no clippings can accumulate between the individual cutter head disks. The cleaning of the cutter head according to the invention can be done without tools after loosening the clamping nut. A static or dynamic balancing of the cutter head according to the invention is generally not carried out.

Another object of the present invention is a method for mounting a cutter head according to the invention, in which the cutter head disk is attached to the shaft and then the blades and / or a knife and a filler plate are attached to the cutter head disk.

Preferably, the cutter head is then clamped on the shaft with a clamping screw.

Furthermore, the cutterhead disks and the blades or filler plates can be preassembled on a sleeve, which is then attached to the cutterhead shaft.

The method according to the invention is very simple and very cost-saving and injury-prone to perform for the fitter, since first the knife head disc on the cutter head shaft and then the knife can be mounted to the cutter head disc. Then the next knife head disc is assembled. After the assembly of all cutterhead discs and knives, these need only be clamped by a clamping nut on the cutterhead shaft. During disassembly, the blades are first removed from a knife head disc and then this Knife head disc removed from the shaft. Each knife can be combined with each cutterhead, greatly simplifying assembly and knife logistics. The same knife can even be used in different meat cutters.

Figur 1

zeigt eine Ausführungsform der erfindungsgemäßen Messerkopfscheibe.

Figur 2

zeigt eine weitere Ausführungsform der erfindungsgemäßen Messerkopfscheibe.

Figur 3

zeigt das erfindungsgemäße System mit einer Position der Exzenterhaltebolzen.

Figur 4

zeigt das erfindungsgemäße System mit einer anderen Position der Exzenterhaltebolzen.

Figur 5

zeigt den erfindungsgemäßen Messerkopf.

Figur 6

zeigt das erfindungsgemäße System mit einer Füllplatte.

Figur 7

zeigt eine weitere Ausführungsform des erfindungsgemäßen Systems mit einer Füllplatte.

Figur 8

zeigt eine weitere Ausgestaltungsform der erfindungsgemäßen Messerkopfscheibe.

Figur 9

zeigt eine weitere Ausführungsform des erfindungsgemäßen Systems mit einer Füllplatte.

Figur 10

zeigt ein Messer, das an der erfindungsgemäßen Messerkopfscheibe anbringbar ist.

The invention will be explained below with reference to FIGS. 1 to 10 . These explanations are merely exemplary and do not limit the general inventive concept.

FIG. 1

shows an embodiment of the knife head disc according to the invention.

FIG. 2

shows a further embodiment of the cutter head disc according to the invention.

FIG. 3

shows the system according to the invention with a position of the eccentric retaining bolts.

FIG. 4

shows the system according to the invention with a different position of the eccentric retaining bolts.

FIG. 5

shows the cutter head according to the invention.

FIG. 6

shows the system according to the invention with a filling plate.

FIG. 7

shows a further embodiment of the system according to the invention with a filling plate.

FIG. 8

shows a further embodiment of the cutter head disc according to the invention.

FIG. 9

shows a further embodiment of the system according to the invention with a filling plate.

FIG. 10

shows a knife, which is attachable to the cutter head disk according to the invention.

FIG. 1 shows an embodiment of the cutterhead 1 according to the invention, which consists of a metallic core 2 and a plastic casing 3. According to the invention, the core 2 is encapsulated with the plastic casing 3, so that a positive and / or non-positive bond between the two parts without further aids and there is no material between the metallic core and the plastic casing can fix. Preferably, the metallic core has on its outer side means, for example a corrugation, which improve the bond between the core 2 and the plastic jacket. In the metallic core, a preferably twelve-edged receptacle for the drive shaft of the cutter head is arranged. Further, recesses 18 are provided in the metallic core, each of which can receive an eccentric retaining bolt with which the blades (not shown) can be attached to the cutter head disc. In the present case, the eccentric retaining bolts 4 are inserted into the recesses 18. The eccentric retaining bolts 4 have a circular disk-shaped head 4 'which is eccentrically arranged at its base 4 ", with the black-drawn surfaces projecting further out of the center than the white-painted surfaces This eccentricity allows the blade (not shown) to have one To place bolts in two different positions on the cutterhead disk A cutterhead disk is supplied as a set with a plurality of eccentric retaining bolts, differing only in the degree of eccentricity thereof. Head 4 'and foot 4 "are each identical. The person skilled in the art recognizes that the eccentric bolts can also have other shapes. For example, eccentric with more than two adjustments are conceivable, the cutter head disc may have no shoulders in this case

In the plastic sheath 3 permanent magnets 7 are inserted, with which the blades can be fixed to the cutter head disc, which is visible for example in Figures 3 or 4. Furthermore, the plastic casing recesses 5, in which, for example, weights are inserted to compensate for imbalances, such as differences in weight of knives to compensate can. The sealing edge 13 cooperates with the knives mounted thereon (not shown) and causes no clippings to get between the knife and the knife head disc. The person skilled in the art recognizes that such a sealing edge can also be arranged on the other side of the cutter head disk. Furthermore, the knife head disc according to the invention has shoulders 19, between which the foot of the knife is arranged. The height of the shoulders and the thickness of the foot of the knife should be as equal as possible or differ only by the respective Tolleranzmaß. The distance between the shoulders essentially corresponds to the broad dimension of the foot of the knife.

FIG. 2 essentially shows the cutter head disk according to FIG. 1, except that in the present case the eccentric retaining bolts 4 are not inserted into the recesses 18 but are fastened with screws 14. The person skilled in the art recognizes that further attachments are conceivable.

FIG. 3 shows the system according to the invention consisting of a cutter head disk 1 and two blades 8. The eccentric retaining bolts are set inwards with their broad side, which is shown in black, so that the radial extension of the system is as small as possible. This is the typical position of the eccentric retaining bolts 4 in knives 8, the outer radius has not been reduced by grinding.

FIG. 4 shows the system according to the invention in which the eccentric retaining bolts are arranged on the cutter head disk such that their broad, black sides are directed outwards, so that in the present case the radial extent of the blade is as large as possible. This position is chosen, for example, if, after grinding, the radial extent of the knife has diminished to such an extent that the distance between the knife edge and the bowl of the cutter in which the knife rotates has become too large, but only in the event of damage to the cutter Messers occurs. Those skilled in the art will recognize that a system is provided with multiple eccentric retention bolts that differ only in their degree of eccentricity so that the radial extension of the system can be very finely adjusted. It is possible, for example, to position all knives at a defined distance from the bowl.

Figure 5 shows a variant of the cutter head according to the invention, which consists in the present case of four cutter head plates according to the invention, of which two are each equipped with two knives 8 on a running plane and two each with a knife and a filling plate 9, 10 on different levels. The knives together with the knife head disc are clamped on the drive shaft of the knife head with a clamping nut. Details of the filling plates 9, 10 can be found in FIGS. 6, 7. The knives 8 can be arranged on any run levels.

FIG. 6 shows a system according to the invention with a filling plate which is pre-mounted on the cutter head disk before it is mounted on the cutter head shaft. The filling plate 9 has just like the knife 8 recesses with which they are plugged onto the eccentric retaining bolts. The magnets 7 prevent the filler plate in the installed state and before the cutter head is braced, tilts forward of the cutter head disc. Also, the filler plate can be changed by the Exzenterhaltebolzen 4 in its radial position. Just like the knife 8, the filling plate 9 cooperates with the sealing edge 13, so that no material to be cut passes between the filling plate 9 and the cutter head disc and there provides for poor hygiene or corrosion.

FIG. 7 shows a further embodiment of the system according to the invention with a filling plate 10. In the present case, the filling plate has a recess 22 which serves to compensate for a dynamic unbalance. The person skilled in the art recognizes that the recess 22 can have any desired shape. Below the recesses 22, the recesses 5 in the plastic casing 3 of the cutterhead disc 1 can be seen.

FIG. 8 shows a further embodiment of the cutter head disk according to the invention, which essentially corresponds to the cutter head disk according to FIG. 1, except that the present cutter head disk has recesses 11. These recesses can also be used to compensate for dynamic imbalances. Furthermore, these recesses, as shown in Figure 9, are filled with weights 12 to even better dynamic To be able to compensate for imbalances.

FIG. 10 shows a knife that can be combined, for example, with the knife head disk according to the invention. The knife has in its foot 21 with a possible shape of the recesses 20 which can be plugged onto the eccentric retaining bolts. Furthermore, the ratio of the Einspannradius B to the knife radius A in the present case corresponds to 0.35 and the ratio of the knife radius A to the receiving width C 1.65. These knives can take very high axial loads without hindering the flow of material into the plane of the paper through the knife head disk.

LIST OF REFERENCE NUMBERS

1

Cutter head disc with metallic core and plastic coating.

2

Cutter head disc with 12-edge socket for the drive shaft and eccentric retaining pin for attachment of the knives

3

Plastic coating for installation and tension of the blades

4

Eccentric retaining bolts for the knives.

5

Mounting hole for weight balance of the knives

6

counterweight

7

permanent magnet

8th

knife

9

panelboard

10

Filling plate with recess

11

Mounting hole for balance weight

12

Balance weight with knife assembly on 2 levels

13

sealing edge

14

fixing screw

18

recess

19

Schulte

22

recess

Claims (21)

1. A cutter head disk (1) for a meat cutter, which cutter head disk (1) is adapted to accommodate at least one blade (8) and has a preferably metallic core (2) for the accommodation of the drive shaft, characterized in that said core (2) is frictionally and/or form-fittingly joined at its periphery to a plastics skirt (3).
2. The cutter head disk as defined in claim 1, characterized in that said core (2) has at least one recess (18), in each of which at least one eccentric retaining bolt (4) for the blade (8) can be mounted.
3. The cutter head disk (1) as defined in claim 1, characterized in that it has at least one recess (18), in each of which at least one eccentric retaining bolt (4) for the blade (8) can be mounted, said blade (8) being adapted for positioning by means of the eccentric retaining bolt (4) in at least two different positions on said cutter head disk (1).
4. The cutter head disk as defined in any one of the preceding claims, characterized in that it has magnets (7), by means of which said blade (8) can be fixed in position on said cutter head disk (1).
5. The cutter head disk as defined in any one of the preceding claims, characterized in that it has at least one sealed edge (13).
6. The cutter head disk as defined in claim 5, characterized in that said sealed edge (13) is in the form of a raised annulus or raised region.
7. The cutter head disk as defined in any one of the preceding claims, characterized in that it has recesses (5, 11).
8. The cutter head disk as defined in claim 7, characterized in that weights (6, 12) can be inserted into said recesses (5, 11).
9. The cutter head disk as defined in any one of the preceding claims, characterized in that it has shoulders (19) of which the height is substantially equal to or slightly less than the thickness of the base (21) of said blade (8) and whose clearance is substantially equal to the width of the base of said blade.
10. A system comprising a cutter head disk as defined in any one of claims 1 to 9 and two blades (8), of which each has two recesses (20), preferably bores, characterized in that said eccentric retaining bolts (4) are inserted in said bores (20).
11. The system comprising a cutter head disk as defined in any one of claims 1 to 9 and one blade (8) and a filler disk (9, 10), each of which has two recesses (20), preferably bores, characterized in that said eccentric retaining bolts (4) are inserted in said bores (20).
12. The system as defined in claim 11, characterized in that said filler disk has recesses (22).
13. The system as defined in any one of claims 10 to 12, characterized in that said blades (8) and/or filler disks (9, 10) can be removably attached to said cutter head disk (1) with the aid of said magnets (7).
14. A cutter head exhibiting at least one system as defined in any one of claims 10 to 13, characterized in that it is disposed on a shaft.
15. The cutter head as defined in claim 14, characterized in that compensation of dynamic imbalance is effected in the plane of the blade.
16. The cutter head as defined in claim 14 or claim 15, characterized in that it need not be balanced.
17. The cutter head as defined in any one of claims 14 to 16, characterized in that all blades have the same length.
18. The cutter head as defined in any one of claims 14 to 17, characterized in that its outer surface is closed and smooth except for the projecting blades.
19. A method of setting-up a cutter head as defined in any one of claims 14 to 18, characterized in that said cutter head disk (1) is fixed to the shaft and then the knives (8) and/or a knife (8) and a filler disk (9) are mounted on said cutter head disk (1).
20. A method as defined in claim 19, characterized in that said cutter head is forced onto the shaft.
21. A method for setting-up a cutter head as defined in any one of claims 14 to18, characterized in that said cutter head disks (1) and said knives (8) or filler disks (9. 10) are preassembled on a sleeve, which is then mounted on the cutter head shaft.

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