DE202011002376U1 - Knife body for cutting sets of crushing machines, in particular meat mincers or the like. - Google Patents

Abstract

Knife bodies for cutting sets of shredding machines, in particular meat grinders for shredding raw materials of animal origin, such as meat, connective tissue, etc., as the basis for the production of meat and sausage products or the like, hereinafter referred to as knife bodies for cutting sets of shredding machines, characterized in that the respective knife strips (1) behind their cutting edges (2) in the zone of the highest mechanical stress have a bevel (4) running to the knife base body (3).

Description

Crushers operating on the wolf principle have very varied cutting sets.

Depending on the desired degree of comminution, pre-cutters, cross or ring knives and perforated discs are arranged in various combinations.

In addition to the desired efficiency for the gentle comminution of the material to be cut, increasing the service life of the cutting set components is always in the focus of further necessary technical improvements.

The innovation concerns the arrangement and design of a friction wear surface on the male connectors of knife bodies for cutting sets.

A particularly high level of wear on the knives rotating with the working worm occurs in the start-up phase of the wolf machine and in the raw material processing at maximum thrust against the cutting set.

The screw conveyor shifts in the first material filling in the context of their predetermined natural game and by the thread effect of the flights in the direction of the outlet and pushes the knives and perforated discs together.

Until the transport screw has transported the material to be cut into the cutting set and the actual cutting process can begin, the entire cutting set runs "dry".

In this dry start condition up to and including collision of the first conveyed raw material components on the perforated disks, these deform by the occurring high impact forces, associated with bending and vibration events.

As a result, it comes at the cutting edges of the knife, especially on the outer diameter to increased friction, wear and pressure with possible total destruction.

The signs of wear are detectable both on the cutting edges of the knife strips of ring knives and on the blades of wing knives in the form of grinding marks.

Likewise, uneven wear of the perforated disc surface is a sign of the inadequate edge contact of the knife edge with the perforated disc, which, however, is desirable to achieve a good quality of cut over the entire, provided with holes area of the perforated disc.

The novelty is therefore based on the object to eliminate the shortcomings of the known embodiments, to increase the service life of the cutting set components and in particular to avoid the edge contact of the blade with the deforming perforated disc, or reduce so far that high frictional forces and the resulting Knife break can be excluded.

It is the object of the invention to make the knife edges or wings of the wolf knives so that the friction is reduced by a reduced contact surface with the perforated disc in the highest load while maintaining high stability and at the same time the knife edges the whole, to ensure a high throughput permanently cover the perforated disc area drilled to the outer border.

The reduction of the known uneven wear phenomena should positively influence the performance of the cutting system and the quality of the cutting process.

Preferred field of application is the comminution of raw materials of animal origin, such as meat, connective tissue, etc. as a basis for the production of meat and sausage products or the like.

According to the innovation, the object is achieved in that the respective male connectors ( 1 ) behind their cutting edges ( 2 ) in the zone furthest from the center, ie in the region of the highest mechanical stress, to the blade base body ( 3 ) running bevel ( 4 ) receive.

As the 1 to 4 show the bevel ( 4 ) as a chamfer ( 5 ) or as one up to the knife body ( 3 ) running bevel ( 6 ).

A minimization of the friction surface is also achieved when the respective selected bevels ( 5 or 6 ) following a cut-out or milling ( 7 ) of the male connector ( 1 ) kick off.

Combinations and embodiments in straight or curved form are also useful, insofar as the contact surface of the blade to the perforated disc and thus the friction forces occurring are reduced.

To achieve optimum throughput, the front cutting edge ( 2 ) but always remain in the entire range of perforated disc bores.

During the wear occurring during the comminution work, in particular the outer knife edge, the friction conditions are increasingly transferred to the inwardly extending portion of the cutting edge and the loads are distributed more uniformly over the entire edge length of the cutting edge.

This ultimately leads to an improvement in the cutting efficiency with a significant reduction in the risk of knife breakage.

Further advantageous embodiments of the innovation will become apparent from the claims, the drawings and the descriptions of the mode of action, or to the embodiments, which are shown below as a section of a, executed according to the claims knife bar.

The drawings show:

1 : Front view and top view of a male connector with bevel

2 : Front view and top view of a male connector with partial bevel in the form of a chamfer

3 : Front view and top view of a male connector with a bevel in the form of a running up to the knife base chamfer

4 : Front view and top view of a male connector with cutout

LIST OF REFERENCE NUMBERS

1

Male connector

2

cutting edge

3

Blade base body

4

Bevel on the male connector

5

bevel designed as bevel

6

to the knife base body running chamfer

7

Milling or milling of the male connector

Claims (6)

Knife body for cutting sets of crushing machines, especially meat grinders for shredding raw materials of animal origin, such as meat, connective tissue, etc. as a basis for the production of meat and sausage products or the like., Knife body for cutting sets of crushers mentioned below, characterized in that the respective male connectors ( 1 ) behind their cutting edges ( 2 ) in the zone of highest mechanical stress a to the knife body ( 3 ) running bevel ( 4 ) exhibit. Knife body for cutting sets of crushing machines according to claim 1, characterized in that the bevel ( 4 ) as a chamfer ( 5 ) is designed. Knife body for cutting sets of crushing machines according to claims 1 and 2, characterized in that the bevel ( 4 ) as one up to the knife body ( 3 ) running bevel ( 6 ) is executed. Knife body for cutting sets of crushing machines according to claims 1 to 3, characterized in that the bevel ( 4 ) or the chamfers ( 5 or 6 ) following a cutout ( 7 ) of the male connector ( 1 ) kick off. Knife body for cutting sets of crushing machines according to claims 1 to 4, characterized in that the bevel ( 4 ) or the chamfers ( 5 or 6 ) may be formed in a straight or curved shape. Knife body for cutting sets of crushing machines according to claims 1 to 5, characterized in that the bevel ( 4 ) in the form of a, from the outer point of the male connector ( 1 ) to the knife body ( 3 ) running bevel can be designed.

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