AT526121A2 - Dicing machine for frozen foods - Google Patents

Abstract

Dicing machine for deep-frozen food, with a circumferentially driven knife roller (1), which comprises axially stacked knife disks (2, 3), of which tooth-like cutting edges (4, 5) alternately protrude outwards and inwards in the axial direction and against each other in the circumferential direction are offset, the knife roller (1) is assigned at least one counter knife (6), which is designed with chamber-like grooves, and a device (7) for feeding frozen food slices (8) is provided, with a plurality of outer knife teeth isolated around the circumference and spaced apart from one another (9) of an outer knife disk (11) protruding and a plurality of inner knife teeth (10) of an inner knife disk (12) are arranged to be set back inwards, circumferentially extending, isolated pockets (13, 14) for receiving material to be cut between each adjacent outer knife teeth (9) on the one hand and inner knife teeth (10) on the other hand are provided, and the inner knife teeth (10) are arranged offset relative to the outer knife teeth (9) in such a way that a front pocket (14) of an inner knife tooth (10) is connected to a rear pocket (13) of an outer knife tooth (9 ) is arranged partially overlapping to form continuous cutting food feed compartments (15) and the device (7) for feeding the frozen food slices (8) is arranged as an inclined plane directed downwards towards the knife roller surrounding surface.

Description

MAGURIT Kühlschneider GmbH Clarenbachstr. 7

42499 Hückeswagen

Dicing machine for frozen foods

The invention relates to a dicing machine for frozen foods,

in particular frozen meat, according to the preamble of claim 1.

It is known to cut cubes from frozen meat delivered in blocks, for example for the production of canned meat (goulash). With machines designed for this purpose, it is essential that the cut material contains cubes that are as clean as possible and only contain a small proportion of fine particles. Therefore, the blocks are first broken down into slices that are as uniform as possible, for which devices similar to guillotines can be used, and these slices are then put into

Dice divided.

From DE 85 05 329 U1 a frozen meat dicing machine with a knife roller, which is alternatively equipped with scoring knives and main knives, is known. The scoring knives cut parallel to each other into a slice of material fed to the roller by means of a conveyor, while the main knives cut the slice in such a way

Shear off the strips formed. So that the scoring knives also have a long service life

63175 when processing very hard material to be cut and clean cubes can be cut, whereby the proportion of small parts should remain low, the following is provided. The scoring knives have a contour that is composed of circular arcs of smaller radius and circular arcs of larger radius in equal numbers, whereby the difference between the two defines the slot depth and in the transition area from the smaller to the larger radius, in the direction of rotation of the roller

seen, a cutting edge is provided.

From DE 10 2007 063 295 A1 a method and a device for cutting a soft food formed into a flat strip into a plurality of parallel longitudinal strips is known. There is also a conveyor belt that conveys the flat food belt at a conveying speed and a cutting roller arranged for it, which has a large number of spaced cutting disks. Furthermore, a drive means is provided which drives the cutting roller. The following is provided so that the method and the device can be implemented using technically simple means and lead to a long service life with great ease of maintenance. The cutting discs are equipped with cutting teeth whose tooth height is greater than the thickness of the food belt. Furthermore, the drive means drives the cutting roller with a web speed measured on the circumference that is at least twice that

Conveying speed corresponds.

From DE 27 19 891 C2 a frozen meat dicing machine with a knife roller is known. The knife roller consists of individual knife disks that are wedged onto a shaft. Two different types of discs alternate with each other in the axial direction. One type of knife disk has tooth-like cutting edges that protrude beyond the base circle cylinder that serves as a stop, namely two per knife disk, while the other type of knife disk has cutting edges that project into the base circle cylinder (also two each). All knife disks are offset from one another in the circumferential direction so that the cutting edges of adjacent knife disks are at a fixed distance - with two cutting edges per knife, for example. B, 90 ° from each other, and the transition from the cutting tip to the cutting tip, which essentially consists of circular and straight sections

Seen in the circumferential direction, the base circular cylinder is approximately this fixed

corresponds to the edge length of the desired cube shape.

A counter knife has on its end face facing the knife roller axially aligned counter blades that project with the knife disks. The same applies to a slider that has counterblades and serves as a pressure device. The pusher moves a slice of frozen meat towards the knife roller. As it advances, the pusher presses the slice of meat against the knife roller, for which a pneumatic cylinder is usually used. A hold-down device prevents the slice of meat from moving upwards or buckling so that it is diced cleanly by the knife roller working together with the counter knife. The speed of the knife roller is such that the separated cubes are thrown onto a chute by centrifugal force and then fall into a box or the like. The disadvantage is that an increase in throughput comes at a cost

clean edge lengths of the cut cubes.

From DE 93 10 506 U1 a system for producing frozen meat granules from frozen meat blocks is known, in which the main shredder is of the dicing type. The main shredder includes a rotating knife shaft, as described for example in DE 27 19 891 C2. Chunks are transported into the working area of such a knife shaft using a push conveyor. Hydraulic/pneumatic conveying systems, such as conveyor carriages, are used for this purpose. The throughput of these systems is increased, but clean cubes cannot be cut. Granules are formed. This machine is primarily used in the production of

Pet food. The object of the invention is therefore to create a cube cutting machine according to the preamble of claim 1, with which cube-like pieces with high

Throughput can be cut.

This task is solved by the features of claim 1.

63175 This creates a dicing machine of the type mentioned, in which the throughput, compared to a known combination of slicer/dicer, is significant with comparable investment outlay and comparable operating costs

can be increased.

It is to the credit of the inventors that they recognized that the slices of meat are pushed forward step by step by a cube edge length by a pusher that presses with force, and this advance is completed before the remaining "points" of the slices of meat are knocked off by the cutting edges of knife slices the material to be cut will become compressed/deformed. This is particularly true if the purpose is to increase the

Throughput the speed of the knife roller is increased.

According to the invention, on the other hand, it is provided that the meat slices are transported towards the knife roller by gravity, for example by means of a chute or chute. A feed pressure should be kept low. According to the invention, the knife roller is given the functionality of generating tensile and pushing forces in conjunction with a torque of the rotating knife roller in intermediate tooth pockets by positioning the outer and inner tooth-like cutting edges relative to one another. The knocking off of "tines" from a slice of meat and the cutting into cubes is achieved by locally applied pulling and

Compressive forces of the rotating knife disks are promoted.

This play of forces generated according to the invention is also not static but dynamic with a preferably fixed counter knife, which is preferably immediately downstream of the disk feed. A product support of the counter knife, in front of the knife roller, should have a variable slope

Product feed angle of 20° to 45°, preferably 30°.

Further embodiments of the invention are in the following description and

can be found in the subclaims.

The invention is explained below with reference to the accompanying figures

illustrated embodiments explained in more detail.

Fig. 1 shows schematically a perspective view of a knife roller, Fig. 2 shows a side view of a knife roller according to Fig. 1,

Fig. 3 shows a perspective view of an outer knife disk,

Fig. 4 shows a perspective view of the inner knife disk,

Fig. 5 shows a partial section of a knife roller with a product feed device and counter knife when the knife roller rotates counterclockwise,

6 and 7 show schematically the process of dicing a slice,

Fig. 8 is a schematic drawing showing the offset between the outer cutter teeth and the inner cutter teeth.

As shown in Fig. 1 to Fig. 8, the invention relates to a dicing machine for frozen foods, in particular frozen meat, with a circumference

driven knife roller 1.

The knife roller 1 comprises axially stacked knife disks 2, 3, of which tooth-like cutting edges 4, 5 alternate outwards and backwards in the axial direction

stand back on the inside and are offset from one another in the circumferential direction.

The knife roller 1 is assigned at least one counter knife 6 and one

Device 7 for feeding frozen food slices 8 is provided.

Circumferentially isolated and spaced apart from one another, a plurality of external knife teeth 9 of an external knife disk 11 protrude and a plurality of internal knife teeth 10 of an internal knife disk 12 protrude inwards

arranged.

Furthermore, circumferentially extending, isolated pockets 13, 14 are provided for receiving material to be cut between adjacent outer knife teeth 9 on the one hand and inner knife teeth 10 on the other. Furthermore, the inner knife teeth 10 are arranged offset relative to the outer knife teeth 9 in such a way that a front pocket 14 of an inner knife tooth 10 partially overlaps a rear pocket 13 of an outer knife tooth 9

is arranged to form thorough cutting compartments 15 (Fig.

arranged on an inclined plane directed downwards towards the surface of the knife roller.

The counter knife 6 is preferably arranged adjacent and downstream - based on the respective direction of rotation of the knife roller 1 - of the inclined device 7 for feeding the frozen food slices. The knife roller 1 is

preferably stored horizontally with its axis 16.

The outer knife teeth 9 and the inner knife teeth 10 are each arranged at equidistant distances from one another. In the direction of rotation of the knife roller 1 and based on the center of the roller axis, an angle β in the range 5 ° to 30 ° is set between an external knife tooth cutting edge 4 and an internal knife tooth cutting edge 5. The slope of the product feed 7 lies

preferably in the range 30° to 60° towards the knife roller 1.

The outer and inner knife disks 11, 12 are preferably arranged axially alternating, with an axial width and depth being selected corresponding to a cube edge length. The counter knife 6 is preferably designed with comb-like grooves whose widths are 0.05 to 0.5 mm larger than that

Widths of the outer knife teeth 9 are.

5 to 7 show the dicing process starting from a disk 8. It can be seen that when the inner tooth 10 (3rd step) cuts off, the product piece 8 to be cut is passed through the outer tooth 9, which is simultaneously in the cutting process. is held. The outer knife disk 11 with pockets 13 on both sides is provided in the area in front of the inner tooth 10 so that the inner cut product can fly out of the roller 1 in a detached manner. The product is fed by gravity over an incline of 30° to 60°, preferably about 45°, towards the knife roller 1, so that the product 8 is controlled without additional feed elements, only by gravity and feed through the cutting teeth 9, 10

Knife roller 1 is conveyed.

The product support 7 of the counter knife 6, in front of the knife roller 1

preferably with a changeable slope to the product feed slope of 20°

up to 45°, preferably 30°, so that the product 8 can be braked. A pull-in force exerted by the teeth 9, 10 can thereby be controlled

become.

Claims (2)

Patent claims 1. Dicing machine for frozen foods, with a circumferentially driven knife roller (1), which comprises axially stacked knife disks (2, 3), of which tooth-like cutting edges (4, 5) alternately protrude outwards and inwards in the axial direction and in Circumferential direction are offset from each other, the knife roller (1) is assigned at least one counter knife (6), which is designed with chamber-like grooves, and a device (7) for feeding frozen food slices (8) is provided, characterized in that circumferentially isolated and relative to each other A plurality of outer knife teeth (9) of an outer knife disk (11) are spaced apart and a plurality of inner knife teeth (10) of an inner knife disk (12) are arranged to protrude inwards, circumferentially extending, isolated pockets (13, 14) for receiving material to be cut between each adjacent one Outer knife teeth (9) on the one hand and inner knife teeth (10) on the other hand are provided, and the inner knife teeth (10) are arranged offset relative to the outer knife teeth (9) in such a way that a front pocket (14) of an inner knife tooth (10) has a rear pocket (13 ) of an outer knife tooth (9) is arranged partially overlapping to form continuous cutting food compartments (15) and the device (7) for feeding the frozen food slices (8) is directed downwards as an inclined plane Knife roller peripheral surface is arranged. 2. Dicing machine according to claim 1, characterized in that Counterknife (6) adjacent and downstream, based on the respective one Feeding the frozen food slices (8) is arranged. . Cube machine according to claim 1 or 2, characterized in that Knife roller (1) is mounted horizontally with its axis (16). . Dicing machine according to one of claims 1 to 3, characterized in that the outer knife teeth (9) and the inner knife teeth (10) are each arranged at equidistant distances from one another. . Dicing machine according to one of claims 1 to 4, characterized in that in the direction of rotation of the knife roller (1) and based on the center of the roller axis between an external knife tooth cutting edge (4) and an internal knife tooth cutting edge (5) there is an angle Bß in the range 5 ° to 30 ° is selected. . Dicing machine according to one of claims 1 to 5, characterized in that the slope of the product feed is in the range 30° to 60° is selected towards the knife roller (1). Dicing machine according to one of claims 1 to 6, characterized in that the outer and inner knife disks (11, 12) are arranged axially alternately and have an axial width and depth correspondingly have a cube edge length. . Dicing machine according to one of claims 1 to 7, characterized characterized in that the counter knife (6) has comb-like grooves is designed, the widths of which are 0.05 to 0.5 mm larger than that External knife tooth widths are.