EP1827117B1 - Device for producing and processing food - Google Patents

Abstract

A device for producing and processing food, in particular meat, includes at least one perforated plate (P) having holes through which the food can be pressed. The perforated plate, (P) is made of two parts, for example, a carrier and an insert, and a press element, for example, a blade which is guided along the insert, is associated with the insert. The insert deviates, in a minimal manner, with heat arising between the insert and the press element.

Description

The invention relates to a device for producing or processing food, in particular meat, with at least one perforated plate, through the holes of which the food can be pressed through, wherein the perforated plate is associated with a cutting edge along her driving knife in a knife carrier.

STATE OF THE ART

Such a device is known, for example, under the name Wolf. The perforated plate is located in a housing, wherein, for example, a plurality of perforated plates can be connected in series, as for example in the DE 39 15 409 A1 is shown. Before each perforated plate a rotating knife is arranged, the blades with their blades on the perforated plate or a Insert in the perforated plate and chop the meat and press through the holes in the perforated plate.

Perforated panels, which consist of two parts, have been around for a long time. For example, in the US 1,695,898 a perforated plate of a support plate and a hardened steel plate inserted therein described. In the JP 3,217,255 A is applied to a support plate, a ceramic plate. Here also a ceramic is used for the knife blade.

From the DE 28 21 930 C1 It is known that perforated disc and / or the knife are made entirely of ceramic or the knife and the perforated disc made of metal and the surfaces of the perforated disc and / or the knife are coated with ceramic.

A knife, which consists entirely of ceramic, is for example from the JP 3217255 A known. Such a knife is extremely expensive and delicate. It is very hard and therefore prone to shock. The high hardness must be balanced by losses in the stability of the blade, as the greater hardness also brings a greater brittleness of the material with it.

A device of the type mentioned above is from DE 44 37 144 A1 known. There, the knife consists of a blade insert and a blade. The blade is in the blade insert, which in turn is made of plastic. The blade insert itself is easily movable within an axial opening of a wing and also easily tilted out to allow complete installation of the blades on the perforated disc under the effect of the working pressure of the material to be crushed.

TASK

The present invention has for its object to develop a device of the type mentioned above, with which improves the quality of the product produced and their transport through the perforated plates through is simplified and the individual parts are still produced inexpensively and also a wear of the knife is reduced.

SOLUTION OF THE TASK

To achieve the object, on the one hand, that the knife has a clamping insert for fixing a blade of ceramic and the blade has at least one lateral support surface, which extends approximately in the plane of the cutting edge.

That is, the knife is formed in several parts, for example, the clamping insert may be made of metal. This has the advantage that the knife can be made much cheaper, without having to forego the benefits of ceramic.

If only a part of the knife, as in the present invention, and especially that part which does not interact with a fastener on the knife carrier, made of ceramic, these disadvantages are eliminated. It can be made cheaper ceramic blades with lower impact sensitivity of the cutting edge.

Preferably, the pawl is zirconia.

A special feature is directed to the fact that the blade is provided with at least one lateral support surface which extends approximately in the plane of the cutting edge or in the position of use in the plane of the perforated plate. This support surface is outside the perforation of the perforated plate and slides on these hole-free areas. As a result, the blade of the blade does not get into a too firm contact with the perforated plate, so that slight unevenness of the perforated plate can not cause damage to the cutting edge.

In a preferred embodiment of the invention, the clamping insert is penetrated by a lag screw, which the clamping insert in a slot in the knife carrier against the blade and this against a Diaphragm wall presses. This means that the ceramic blade does not cooperate with a fastening element, so that here also no weakening of the blade, for example by a bore or in particular by a threaded bore takes place.

The insertion of the knife, consisting of clamping insert and blade, is facilitated by the fact that clamping insert and blade form a unit to some extent, which can be inserted from a wing tip of the knife carrier forth in a corresponding slot. For this purpose, the clamping insert forms a corner bead into which the blade is inserted. So that a lateral displacement of the blade is avoided, protrude in this corner bead of the clamping insert from centering, which can engage in corresponding centering holes in the blade.

Incidentally, clamping also has the great advantage that the ceramic blade and ceramic cutting edge do not have to be as dimensionally stable. That is, no expensive machining of the blade takes place so that it fits exactly in the slot. This makes the blade much cheaper.

Further, a further improvement of the work of the knife and also the determination of the knife in the slot is possible in that the surface of the wing, in which the knife sits, is particularly designed. The idea of the invention relates to the fact that a surface area of the blade in the direction of rotation in front of the blade or the cutting edge of the blade maintains a greater distance from it than after the blade. Incidentally, this jump is bridged by a free Stirrikante the clamping insert, which is inclined in relation to the surface of the knife carrier. In this way, the meat is pressed in front of the cutting edge from a wider area in a narrower area, so that the activity of the cutting edge is improved.

If, for example, a knife blade mentioned above grazes the perforated plate in a known wolf and cuts the product, heat is generated

usually discharged both via the knife as well as the perforated plate. According to the present invention, this removal of heat should be largely avoided, so that the heat is introduced into the product. For example, in a meat grinder the Eiweisbindung is significantly improved by the higher temperature, which in turn leads to an improvement of the entire product. In practice, it has been found that in this way a heat input into the product by 2 ° C and more can take place.

In the context of the invention, on the one hand, it is thought that the insert and / or the pressing element have a low thermal conductivity. Here, a suitable material offers. For example, the insert could consist of a ceramic material whose thermal conductivity is extremely low. However, knife blades made of ceramic materials, which are used in particular in surgery and also have a low thermal conductivity, are already available today.

Furthermore, it can be thought of separately or together with the choice of material to strip the insert relative to the carrier and / or the knife against its support. Here, every form of insulating layer is suitable. For example, as an insulating layer between the insert and the carrier, it is also possible to use the adhesive which connects the insert to the carrier.

When using a ceramic for use in particular, the extreme wear resistance is to mention, the same applies to a use of a ceramic material for the knife blade.

DESCRIPTION OF THE FIGURES

• Figur 1 eine Draufsicht auf eine Lochplatte zur Verwendung in einer Vorrichtung zum Herstellen oder Verarbeiten von insbesondere Fleisch;
• Figur 2 einen Querschnitt durch die Lochplatte gemäss Figur 1 entlang Linie II-II;
• Figur 3 einen vergrössert dargestellten Ausschnitt aus dem Querschnitt gemäss Figur 2 im eingekreisten Bereich;
• Figur 4 eine Draufsicht auf einen erfindungsgemässen Messerträger;
• Figur 5 einen vergrössert dargestellten Querschnitt durch einen Bereich des Messerträgers gemäss Figur 4 entlang Linie V-V;
• Figur 6 einen vergrössert dargestellten Querschnitt durch den Messerträger gemäss Figur 4 entlan ge Linie VI-VI.

Further advantages, features and details of the invention will become apparent from the following description of a preferred embodiment and from the drawing; this shows in

• FIG. 1 a plan view of a perforated plate for use in an apparatus for producing or processing in particular meat;
• FIG. 2 a cross section through the perforated plate according to FIG. 1 along line II-II;
• FIG. 3 an enlarged section of the cross section according to FIG. 2 in the circled area;
• FIG. 4 a plan view of a knife carrier according to the invention;
• FIG. 5 an enlarged cross section through an area of the blade carrier according to FIG. 4 along line VV;
• FIG. 6 an enlarged cross section through the blade carrier according to FIG. 4 along the line VI-VI.

A perforated plate P is according to Figures 1 and 2 The insert 2 is inserted into the carrier 1 and insulated there from the carrier 1 by an insulating layer 3. This insulating layer 3 may be, for example, an adhesive layer.

The carrier 1 has holes 4, which congruate with holes 5 in the insert 2. The holes 5 in the insert 2 have an inlet opening 6 with a diameter d. Downstream of the inlet opening 6, a widening step 7 is formed in the hole 5, through which the diameter d increases a diameter d _{1 is} extended, whereby the holes 4 in the carrier 1 have this diameter d ₁ .

In a crushing machine or a meat grinder, the perforated plate P is usually associated with a blade carrier 10, as he to the FIGS. 4 to 6 will be described in more detail. This blade carrier 10 has a disc 11 from which project a plurality of wings 12. In each wing 12, a slot 13 is formed, which receives a knife 14. Slot 13 and blade 14 extend radially to tangentially to the disc 11th

The slot 13 should have an approximately linear slot bottom 15, wherein the blade 14 has a straight bottom 16. The knife 14 is inserted from a wing tip 17 into the slot 13 and held by a tension screw 18. Since a head 20 of the tension screw 18 abuts against a shoulder 21 in the wing 12, the knife 14 is against a slot wall 22 in a further rotation of the tension screw 18 pulled out. Since the blade 14 consists of two parts, namely a clamping insert 23 made of metal and a blade 24 made of ceramic, the blade 24 between the clamping insert 23 and the slot wall 22 is clamped by tightening the lag screw 18.

To facilitate the use of the blade 14 in the slot 13 clamping insert 23 and blade 24 are to form a manageable unit. For this purpose, a corner bead 25 is formed in the clamping insert 23, in which the blade 24 is seated. It is centered in the corner bead 25 by two pins 26.1 and 26.2.

In FIG. 5 It can also be seen that a surface area 27 of the wing 12 of a blade 28 of the pawl 24 a greater distance a ₁ complies than another surface area 29 in the direction of rotation of the blade carrier 10 after the knife 14. This difference b is bridged by a front edge 30 of the clamping insert 23.

Furthermore, protective surfaces 31.1 and 31.2 are preferably provided on both sides of the cutting edge 28 on the blade 24, which prevent the cutting edge 28 from being seated directly on the perforated plate P. These support surfaces 31.1 and 31.2 extend with a free edge 32 in the plane of the perforated plate surface and in areas outside the holes of the perforated plate P.

LIST OF REFERENCE NUMBERS

1 carrier 34 67 2 commitment 35 68 3 insulating 36 69 4 hole 37 70 5 hole 38 71 6 inlet opening 39 72 7 step 40 73 8th 41 74 9 42 75 10 blade carrier 43 76 11 disc 44 77 12 wing 45 78 13 slot 46 79 14 knife 47 a ₁ distance 15 slot base 48 P perforated plate 16 ground 49 d ∅ of 6 17 pinion 50 d ₁ ∅ of 4 18 lag screw 51 19 threaded hole 52 b difference 20 head 53 21 shoulder 54 22 diaphragm wall 55 23 clamping insert 56 24 blade 57 25 corner bead 58 26 spigot 59 27 surface area 60 28 cutting edge 61 29 surface area 62 30 front edge 63 31 support surfaces 64 32 free edge 65 33 66

Claims (9)

1. Apparatus for the production or processing of a foodstuff, more especially meat, said apparatus having at least one perforated plate (P), through the perforations (4, 5) of which the foodstuff can be pressed, a cutter (14) in a cutter carrier (10) being associated with the perforated plate (P) and having a cutting edge (28) which travels along said perforated plate, characterised in that the cutter (14) includes a clamping insert (23) for the securement of a blade (24) formed from ceramic material, and the blade (24) has at least one lateral supporting face (31.1, 31.2), which extends substantially in the plane of the cutting edge.
2. Apparatus according to claim 1, characterised in that the clamping insert (23) is traversed by a tension screw (18), which presses the clamping insert (23) in a slot (13) in the cutter carrier (10) against the blade (24), and presses said blade against a slot wall (22).
3. Apparatus according to claim 2, characterised in that the clamping insert (23) forms a corner channel (25) for the blade (24), in the region of which are provided centring pins (26.1, 26.2) for the blade (24).
4. Apparatus according to one of claims 1 to 3, characterised in that a spacing (a₁) between the cutting edge (28) and a surface region (27) of the cutter carrier (10) in the direction of rotation in front of the cutter (14) is larger than a spacing (a₂) downstream of the cutter (14).
5. Apparatus according to claim 4, characterised in that a free leading edge (30) of the clamping insert (23) is orientated inclinedly in relation to the surface of the cutter carrier (10), so that it ascends from the surface region (27) upstream of the cutter (14) to the surface region (29) downstream of the cutter (14).
6. Apparatus according to at least one of claims 1 to 5, characterised in that the perforated plate (P) comprises a carrier (1) and an insert (2).
7. Apparatus according to claim 6, characterised in that the insert (2) and/or the cutter (14) have/has a low heat conductivity.
8. Apparatus according to claim 6 or 7, characterised in that the insert (2) and/or the cutter (14) are/is insulated relative to their/its respective carrier (1) by an insulating layer (3).
9. Apparatus according to one of claims 6 to 8, characterised in that the insert (2) is formed from ceramic material, more especially from silicon nitride.

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