EP2821143B1 - Mixing mincing blade - Google Patents

Description

The present invention relates to a cutting disc, in particular for mincers, for crushing and / or mixing of supplied conveyed, in particular of meat or other foods, with a rotary drive serving, centric drive means, starting from which two or more grinding and / or cutting organs spike-like or radially extend.

Knives, knife disks or cutting sets for shredding machines, in particular for meat grinders, are already known in various forms. The various forms range from cross knives to ring knives and knife wheels. In the DE 199 08 665 C1 discloses a knife consisting of a plurality of knife edges, wherein the cutting edges are supported by a ring on the outer diameter. A portion of the cutting edges are reduced in length on the exit side or formed only over a certain part of the cutting edge. The reduction of the cutting edge is not present in all arranged knife edges, so that a good mixing can take place only until the next fully developed cutting edge. Furthermore, the solid components, such as cartilage, stalks, etc. migrate toward the hub and accumulate in the center, resulting in clogging and / or choking of the perforated disc.

A cutting disc of the type mentioned initially, which contains discharge channels for hard parts in the radial spoke-like arranged cutting elements, is from the DE 26 56 991 A1 known. The outlet openings of the radial discharge channels open at the respective, end-side channel end in a circular channel connecting the cutting elements. This is provided at one point with a tangentially opening out opening in the form of a welded pipe section, about which delivered hard mass is to be completely carried away.

A knife cross, which is used due to the execution of the cutting channels in each direction of rotation, is from the DE 25 50 968 A1 known. The cutting channels are grooves with side walls, which are designed as cutting edges. The grooves, arranged in as large a number as possible parallel to one another and at an angle to the central axis of the knife edge, are at the same time suitable for guiding solid components through the knife edges. As a result, low-wear film formation from tendons and braids can be prevented on the perforated plate, however, the grooves are not designed for optimization for targeted outward guiding solid components through the knife edges through.

A generic knife with similarly arranged grooves is from the DE 19836715 A1 known.

It is therefore an object of the invention to displace the conveyed material to be conveyed, material to be cut and / or material within the cutter disk, in particular from inside to outside. As a result, the material to be conveyed, material to be cut and / or material is again fed to the comminuting circuit, whereby an optimal mixing is achieved and clogging and choking the perforated disk is largely avoided.

To solve the problem, a cutter disk according to claim 1 is proposed. Advantageous, optional training and / or further developments arise wholly or partly from the dependent claims.

In the case of the proposed cutter disk, according to the invention, at least one of the cutting members for the material to be conveyed has a guide channel. The guide channel is designed for the expression of a conveyed material flow or transport within and along the cutting member. The term conveyed is synonymous with sliced or other material to be crushed introduced. The guide channel can be arranged arbitrarily in the cutting member and have any embodiments. For example, the guide channel may be oblique, straight, curved or curved.

The guide channel has a closer to the drive means inner opening and a remote from the Drive device lying outside opening. Depending on the direction of rotation of the cutter disk, the outer and the inner opening may be formed as an inlet / inlet or outlet / outlet for the conveyed or Schneidgut. This means that the inlet / inlet, ie outer or inner opening, is expediently always designed in the direction of the direction of rotation or has its opening to this side. The exit / exit, however, is possible on any side of the cutting member. It is advisable to use the inner opening as entry / entrance of the conveyed, since the hard or large components, such as braid and cartilage, which do not fit through the perforated disc, move inward to the drive means. These are then transported by the guide channel from the inner opening to the outer opening, so that they are fed again to the crushing process. However, it is also possible to use the outer opening as entry / entrance, so that the conveyed material is transported from outside to inside to the drive device.

The inner and outer openings are arranged on opposite sides of the cutting member. In a further embodiment of the invention, the inner and / or outer opening are aligned in or parallel or corresponding to the disc circumferential direction. Further, in an advantageous embodiment, the inner and / or outer opening in the axial direction or axially parallel to the drive device aligned so that the conveyed in the conveying direction before and / or behind the cutter disc and / or exits. It is also expedient that the inner opening in the intended direction of rotation and / or the outer opening are aligned counter to the intended direction of rotation. In a further expedient embodiment, the outer opening in the intended direction of rotation and / or the inner opening are aligned counter to the intended direction of rotation.

All conceivable combinations are possible. On the one hand, the inner or outer opening in the direction of rotation and the outer or inner opening on the opposite side, ie opposite to the Direction of rotation, be arranged. Furthermore, there is the possibility that both openings, ie the inner and the outer opening, are arranged in the axial direction on the cutting elements. All possibilities listed here of the opening arrangements can be reversed, ie in the sides of the cutting member, the openings are reversed. Instead of the inner openings are outer openings and instead of the outer openings inner openings are formed.

According to the invention, the guide channel is designed in the region of the inner or outer opening for realizing a curved flow or conveying path. There are again several execution options. The inner and / or outer opening may run obliquely or perpendicular to an imaginary radial direction and then be connected to each other in the radial direction. In addition to curvatures or curves, the guide channel can also have only one straight line between the outer and inner openings. The guide channel and the inner and outer openings should preferably be designed or adapted optimally in terms of flow. This means that edges or corners should be avoided and bends or radii should be preferred. The person skilled in the art should be aware of all possibilities here.

In a likewise embodiment of the invention, the cutting member on at least one side of a cutting element, in particular an edge, blade or cutting edge, on. Preferably, a cutting element is present on the side of the entrance / entrance. Thus, the cutting element is always mounted on the leading side of the cutting member. A cutting element on one side can also be subdivided into a plurality of cutting elements. For example, the cutting element may be interrupted by the openings for the guide channel.

It is also expedient that the guide channel is formed as an outwardly open groove and / or as a closed bore. A combination of open groove and closed bore is also conceivable. For example, the inner and outer apertures may be an outwardly open groove over a predetermined portion while the remainder of the guide channel is formed as a closed bore.

In a further expedient exemplary embodiment, the guide channel formed as an outwardly open groove is at least partially delimited on both sides by guide walls projecting parallel to the axis. Furthermore, in a further advantageous embodiment, one or more boundaries of the guide channel are formed with edges capable of being cut. In addition to the cutting elements on the cutting member, the edges of the guide channel may also be formed as cutting elements. This means that one or more edges of the guide channel act as a cutting element.

The centric drive device is surrounded by one or more inner sealing means. Preferably, the sealing means comprise a concentric annular groove with sealing compound received therein. Under sealant all known sealing means, such as O-rings, etc. understood. The concentric annular groove is to be interpreted according to the sealant to be used and thus may vary in shape.

The cutter disk is also provided with a peripheral or outermost peripheral end ring. Conveniently, the end ring relative to the cutting member axially parallel on or on both sides projecting sealing edges. The sealing edges have beveled surfaces, preferably a 45 ° chamfer.

Figur 1

Draufsicht der Messerscheibe mit eingezeichneten Schnittlinien (A-A, B-B, C-C), Drehrichtung sowie Fördergut-Fluss

Figur 2

Unteransicht der Messerscheibe mit eingezeichneter Drehrichtung

Figur 3

Querschnitt der Messerscheibe (A-A)

Figur 4

Schnittzeichnung der Messerscheibe (B-B)

Figur 5

Schnittzeichnung der Messerscheibe (C-C)

Figur 6

Vogelperspektivische Draufsicht der Messerscheibe mit eingezeichneter Drehrichtung

Figur 7

Vogelperspektivische Unteransicht der Messerscheibe mit eingezeichneter Drehrichtung

Further details, features, combinations of features and effects on the basis of the invention will become apparent from the following description of preferred, exemplary embodiments of the invention and from the drawings. These show in:

FIG. 1

Top view of the cutting disc with marked cutting lines (AA, BB, CC), direction of rotation and material flow

FIG. 2

Bottom view of the cutting disc with marked direction of rotation

FIG. 3

Cross section of the cutting disc (AA)

FIG. 4

Sectional drawing of the cutting disc (BB)

FIG. 5

Sectional drawing of the cutting disc (CC)

FIG. 6

Bird's-eye view of the cutting disc with the direction of rotation indicated

FIG. 7

Bird's-eye view bottom view of the cutting disc with marked direction of rotation

In the Fig. 1 the cutter disc is shown as a plan view with drawn section lines AA, BB and CC. In the middle of the cutter disk, a centric drive device 1 or hub is provided. The drive device 1 or hub is positively connected to a shaft, in particular to the axis of the screw conveyor, so that the cutter disk is driven by the shaft. In direct connection to the drive device 1 , a concentric annular groove 2, which is introduced into the connection ring 3 , is arranged. In this annular groove 2 , a sealant is inserted, which separates the drive device 1 from the conveyed. The connecting ring 3 is connected to the end ring 4 by radial spoke-like cutting members 5 . Each cutting member 5 has an inner 6 and an outer opening 7 . The inner opening 6 is arranged on the connecting ring 3 in the circumferential direction of the disk, ie perpendicular to obliquely to the radial direction of the cutting member 5 in the direction of rotation of the cutter disk. The outer opening 7 is offset starting from the arrangement of the inner opening 6 on the opposite side of the cutting member 5 to the outside. In the Fig. 1 the outer opening 7 abuts against the end ring 4 . The radially extending in the cutting member 5 guide channel 8 is formed as an outwardly open groove. This means that the guide channel 8 on both sides of axially parallel projecting guide walls 9, which also extend radially along the cutting member 5 , is partially limited.

Between two cutting members 5 each have a recess 10 is provided, in which the conveyed conveyed under pressure over the screw conveyor and is removed via the lying on the opposite side of the blade disc disc. Furthermore, when rotating the cutter disk, a part of the conveyed material, in particular the components of the conveyed goods which are larger than the holes of the perforated disk, is transported from the recesses via the inner opening 6 through the guide channel 8 to the outer opening 7 and thus to the next adjacent recess 10 , In order to comminute the ingredients during the turning process 5 cutting elements 11 are attached to each cutting member. The item 11 extends from the inner opening 6 radially along the cutting member 5 up to the end ring 4. The conveyed is thus due to the Leitkanäle 8 as long as the crushing process, ie the attached to the cutting member 5 cutting elements 11, fed to the components of the conveyed so small that they fit through the perforated disc.

In the Fig. 2 is the bottom view of the knife disc shown. It can be clearly seen that the drive device 1, the connecting ring 3, the cutting elements 5 and the end ring 4 are formed from one component. The direction of rotation of the cutting disc in this view is in the clockwise direction. The radially extending axially projecting cutting elements 11 are mounted on the leading side of the cutting member 5 . In the area of the cutting element 11 , the comminution process takes place. On the trailing side of the cutting member is located on the bottom of a negative cutting angle or a negative cutting edge 12. As a negative cutting angle, each angle is designated, which is greater than 90 °.

The Fig. 3 sets the cross section of the blade along the indicated section line AA in Fig. 1 The closing ring 4 has sealing edges 13 , which are projecting in the axial direction of the cutter disk. In radially inwardly extending direction extends the cutting member 5, which has an outwardly open groove in the axial direction. This outwardly open groove represents the guide channel 8 , which is bounded by baffles 9 . Furthermore, in the cutting member 5 directly adjacent to the end ring 4, the outer opening 7 is arranged. In order to create good flow conditions , the guide channel 8, the inner opening 6 and the outer opening 7 are rounded in the interior. Adjacent to the cutting member 5 and the inner opening 6 of the connecting ring 3 is formed. In the connection ring 3 , a concentric annular groove 2 is arranged in the axial direction or axially parallel. This annular groove 2 is to be formed according to the sealant to be inserted. At the connection ring 3 , the projecting in the axial direction drive device 1 is arranged.

The Fig. 4 shows the cross-sectional profile along the section line BB. At both ends of the cross section, the sealing edges 13 of the end ring 4 can be seen. Furthermore, the inside rounded guide channel 8, which is bounded by two guide walls 9 and thereby has a U-shape, can also be seen. The protruding in the axial direction cutting element 11 has, in particular on the leading side on a sharp edge. On the opposite side of the cutting member 5 and on the side opposite to the direction of rotation side of the negative cutting angle and thus the negative cutting edge 12 is formed. Furthermore, in Fig. 4 It can be seen that the cutting member 5 tapers on the side with the negative blade 12 downwards. The leading side, however, has starting at the end of the baffle 9 and ending at the end of the cutting element 11 on an arc slightly outwardly, wherein the opposite side of the cutting element 11 runs straight or in the axial direction down.

The Fig. 5 represents the cross section of the cutter disk along the section line CC. The sealing edges 13 have a beveled surface, a so-called chamfer on. Furthermore, the rounded outer opening 7 can be seen, which merges fluently by means of a curvature in the radial guide channel 8 . Furthermore, the guide wall 9, which limits the guide channel 8 on the opposite side of the outer opening 7 , shown. The guide wall 9 has following the end ring 4 axial or perpendicular to the end ring 4 extending sides. The cutting elements 11 also have vertical or axially projecting sides. In the radial direction, ie in the direction of the drive device 1 , the outer vertical sides of the cutting elements 11 and of the guide walls 9 , which point away from the cutting member 5, enter a curvature, as shown in FIG Fig. 4 is shown. The outer end of the guide wall 9 and the outer end of the cutting element 11 are connected to each other via a slight curvature going into the cutting member 5 .

The Fig. 6 and Fig. 7 are shown as birds-eye views of the knife disc. In the Fig. 6 shown view of the knife disc points in the direction of perforated disc. The view in Fig. 7 , which represents the back of the knife disc, thus points to the auger. The axis of the screw conveyor is positively connected to the drive device 1 of the cutter disk to achieve the desired rotational movement and rotational speed of the cutter disk. About the auger conveyor or material to be cut is conveyed under pressure or transported to the cutting disc.

The conveyed passes over the recesses 10 of the knife disc to the perforated disc. The conveyed material is comminuted due to the rotational movement of the cutter disk of the axially projecting cutting elements 11 of the spoke-like arranged cutting elements 5 . Depending on the diameters of the holes in the perforated disc, the comminuted material is forced through these holes. The components of the conveyed material, which are larger than the holes in the perforated disc, are transported in the direction of the drive device 1 . Due to the arranged in the disk circumferential direction Inner opening 6 in each cutting member 5 are mainly transported to the perforated disc to large components of the conveyed by the guide channel 8 to the outer opening 7 and thus to the next adjacent recess 10 on.

Since the conveyed again moves from outside to inside, it is further crushed by the cutting elements 11 . The conveyed material is thus fed back to the comminution process. If the components of the conveyed material are still too large, they are again transported through the guide channel 8 of the nearest cutting member 5 from inside to outside. This process or cycle can be repeated as often as required until all constituents of the conveyed material are correspondingly comminuted, so that they pass through the holes in the perforated disc. In addition to the comminution process, the guide channels also serve to mix the conveyed material.

LIST OF REFERENCE NUMBERS

1 -

Drive device, hub

2 -

concentric annular groove

3 -

Attachment ring

4 -

end ring

5 -

cutting member

6 -

inner opening

7 -

external opening

8th -

guide channel

9 -

baffle

10 -

recess

11 -

cutting element

12 -

negative cutting edge

13 -

sealing edge

Claims (9)

1. A cutting disc, in particular for meat mincers, for breaking up and/or mixing conveyable material that is delivered, in particular meat or other foodstuffs, with a centrical drive device (1) serving as its rotary drive and from which two or more grinding and/or cutting components (5) extend like spokes or radially, at least one of the cutting components (5) having a guide channel (8) for the conveyable material which is designed to form a flow or transportation of conveyable material within the cutting component (5), and the guide channel (8) having an inner opening (6) lying closer to the drive device (1) and an outer opening (7) lying further away from the drive device (1), and the inner (6) and the outer opening (7) being disposed on opposite sides of the cutting component (5) and being aligned in or parallel to the circumferential direction of the disc, the inner opening (6) being aligned in the intended direction of rotation, and the outer opening (7) being aligned in the direction opposite to the intended direction of rotation, characterised in that the guide channel (8) runs along the cutting component and is configured to produce a curved flow or conveying path in the region of the inner (6) or outer opening (7).
2. The cutting disc according to Claim 1, characterised in that the inner (6) and the outer opening (7) are disposed, radially offset, on opposite sides of the cutting component (5).
3. The cutting disc according to either of Claims 1 or 2, characterised in that the inner (6) and/or the outer opening (7) are aligned in the axial direction or axially parallel to the drive device (1) so that the conveyable material enters or exits in front of and/or behind the cutting disc in the direction of conveyance.
4. The cutting disc according to any of the preceding claims, characterised in that the cutting component (5) has a cutting element (11), in particular an edge, a blade or a cutter, on at least one side.
5. The cutting disc according to any of the preceding claims, characterised in that the guide channel (8) is made in the form of an outwardly open groove and/or of a closed bore hole.
6. The cutting disc according to Claim 5, characterised in that the guide channel (8) in the form of an outwardly open groove is at least partially delimited on both sides by guide walls (9) that protrude axially parallel.
7. The cutting disc according to any of the preceding claims, characterised in that one or more boundaries of the guide channel (8) are formed with edges that can cut.
8. The cutting disc according to any of the preceding claims, the centrical drive device (1) being surrounded by one or more sealing means located on the inside, characterised in that the sealing means comprise a concentrical annular groove (2) with sealing compound accommodated therein.
9. The cutting disc according to any of the preceding claims, that has a closure ring (4) forming the peripheral or outermost circumference, characterised in that the closure ring (4) has sealing edges (13) projecting axially parallel on one or both sides opposite the cutting component (5).

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