Cutting set system for a meat mincing machine

Abstract

The invention relates to a reliable cutting set system for a meat mincing machine. The mutually matched coding (14, 24) between knife pins (10) and the cutting set element (20) prevents an incorrect installation of the cutting set element (20) after a cleaning process or during the initial assembly, thereby increasing the operational safety. The invention allows a detection of the correct cutting set element (20) of a cutting set system and thus an unambiguous allocation of the cutting set element to a knife pin (10) of a cutting set system.

Claims

1. A cutting set system for a meat grinder, comprising a drivable knife journal (10, 10′) and having a cutting element mounted on the knife journal (10, 10′), the knife journal (10, 10′) having a cross-section and wherein the knife journal (10, 10′) has a bearing section (13) for the cutting element mounted on the knife journal (10, 10′), wherein the cutting element has a central hub (21) provided with a through hole (22) for rotationally fixed mounting on the knife journal (10, 10′), the through hole having a cross-section and having an inner surface, the cross-section of the knife journal (10, 10′) being adapted to the cross-section of the through hole of the cutting element, wherein a plurality of partial circumferential surfaces (151, 152, 153, 154), form a circumferential surface (15) of the knife journal (10, 10′), in particular two parallel partial circumferential surfaces (152, 154) being present and interacting as drive surfaces with appropriately designed partial inner surfaces (231, 232, 233, 234) of the inner surface (23) of the through hole (22) of the cutting element during a rotational movement in a direction of rotation (D), wherein at least one coordinated coding is present on the inner surface (23) of the through hole (22) of the cutting element and on the circumferential surface (15) of the knife journal (10, 10′), characterized in that either: the coding of the knife journal (10, 10′) acts as a journal-side coding element (14, 14′) between adjacent partial circumferential surfaces (151, 152) and, in a coordinated manner, engages with a coding element (24, 24′) on the cutting element between two adjacent partial inner surfaces (231, 232), or the coding is arranged on a partial circumferential surface (151, 152, 153, 154) of the knife journal (10, 10′) and matches to a corresponding coding element on the cutting element.

2. The cutting set system according to claim 1, characterized in that the cutting element comprises either a perforated disc with a plurality of holes arranged around the hub (21), or a knife (20, 20′) with a plurality of knife blades (25), which are arranged around its hub (21) and extend outwards from the latter, with at least one cutting edge (26).

3. The cutting set system according to claim 1, characterized in that at least one coding element is employed, with the coding element (24, 24′) on the cutting element having a shape corresponding to the journal-side coding element (14, 14′).

4. The cutting set system according to claim 1, characterized in that the journal-side coding element (14) has an axis of rotation extending in the axial direction of the knife journal (10, 10′), a connecting surface of which comprises adjacent partial circumferential surfaces (151, 152) of the knife journal (10, 10′), and is formed by material removal of a contact edge of these two adjacent partial circumferential surfaces (151, 152).

5. The cutting set system according to claim 4, characterized in that the journal-side coding element (14) has an axial direction of the knife journal (10, 10′), on adjacent partial circumferential surfaces (151, 152), and the coding element (24) on the cutting element is a corresponding planar connecting surface of the partial inner surfaces (231, 232).

6. The cutting set system according to claim 4, characterized in that the journal-side coding element (14) has an axial direction of the knife journal (10, 10′), and the coding element (24) on the cutting element is a corresponding curved connecting surface of the partial inner surfaces (231, 232).

7. The cutting set system according to claim 1, characterized in that the journal-side coding element (14′) is a rib running in the axial direction of the knife journal (10, 10′), and the coding element (24′) on the cutting element is an adapted groove running in the axial direction.

8. The cutting set system according to claim 1, characterized in that in each case the number of journal-side coding elements (14, 14′) is one, and the number of coding element (24, 24′) present on the cutting element is one.

9. The cutting set system according to claim 1, characterized in that, as coding in addition, a transponder is present on the inner surface (23) of the through hole (22) of the cutting element, which transponder interacts with a receiver which is arranged in the knife journal (10, 10′).

10. The cutting set system according to claim 1, characterized in that the knife journal (10, 10′) has a front connecting section (11) for connection to a screw conveyor of the meat grinder and a rear storage section (13) for connecting mounting at least one cutting element, namely a pre-cutter, knife (20, 20′), or perforated disk.

Description

[0018] FIG. 1: perspective view of a blade journal,

[0019] FIG. 2 is a front view of a knife,

[0020] FIG. 3: a cutting set system comprising a blade journal according to FIG. 1 and knife according to FIG. 2,

[0021] FIG. 4: perspective view of a further knife journal,

[0022] FIG. 5: front view of a further knife,

[0023] FIG. 6: a cutting set system comprising a blade journal according to FIG. 4 and knife according to FIG. 5.

[0024] FIGS. 1 to 3 show a first embodiment of the invention. FIG. 1 shows the blade journal 10 and in FIG. 2 the knife 20, with the new cutting set system shown in FIG. 3. Such a cutting set system is used in a meat grinder. Via its connecting section 11, in this case a screw-in thread, the blade journal 10 is screwed axially into a screw conveyor (not shown here) and moved together therewith. During this rotary movement D, the knife 20 is mounted in a rotationally fixed manner on the blade journal 10, in the bearing section 13. In the meat grinder, the knife 20 cooperates with a perforated disk (omitted for clarity in FIG. 3) which is used as a further cutting part in the meat grinder. Typically, there is a precutter in the meat grinder behind the contact surface 12 and at least one combination consisting of knives 20 and perforated disc. These are pushed onto the blade journal 10 in the bearing section. In order that the blade journal 10 can take along the knife 20 during the rotary movement D, the blade journal 10 has a corresponding polygonal cross-section. This can be a square, hexagon or other polygonal cross-section. FIG. 1 shows a blade journal 10 with a circumferential surface 15 with two parallel partial circumferential surfaces 152, 154. In between, the partial circumferential surfaces 151, 153, wherein the latter show a curved course, are shown. Contact edges are located between two adjacent partial circumferential surfaces. Only between the partial circumferential surface 151 and 152 is the contact edge and an inclined connecting surface, which serves as the coding element 14. This coding element 14 corresponds to a coding element 24 on the inner surface 23 of the knife 20. This knife 20 has a through bore 22 in the central hub 21 with an inner surface 23 adapted to the circumferential surface 15 of the blade journal 10, so that the four partial inner surfaces 231, 232, 233 and 234 lie against the corresponding partial circumferential surfaces 151, 152, 153, 154 of the blade journal 10; see FIG. 3. In the installed state of the knife 20, the coding element 14 of the blade journal 10 is located adjacent to the coding element 24 of the knife 20. Good torque transmission from the blade journal 10 to the knife 20 is thus ensured. Due to this coding with the coding elements 14, 24, the knife 20 can only be pushed onto the blade journal 10 in this orientation. A backwards arrangement, that is, a pushing-on of the knife onto the blade journal with the (incorrect) front side shown in FIG. 2 rather than the (correct) back side, is prevented, so that it is ensured that the knife 20 is correctly arranged on the blade journal 10. In this correctly installed state, the cutting edges 26 on the knife blades 25 of the knife 20 point in the direction of rotation D and, as intended, are able to carry out the cutting operation.

[0025] A further embodiment of the new cutting set system is shown in FIG. 6. This cutting set system for a meat grinder also comprises a blade journal 10′ and a knife 20′, which are provided with a coordinated coding. Thus, the blade journal 10′ has a circumferential surface 15 in the bearing section 13, which is provided for the rotationally fixed mounting of the knife 20′, where between two partial circumferential surfaces 151 a rib 14′ extending in the longitudinal direction of the blade journal 10′ is provided, which interacts with a knife-side coding element in the form of a groove 24′ on the inner surface 23 of the knife 20′. The rib 14′ has an approximately triangular cross section. The approximately triangular cross section is rounded off at the corners, so as to reduce the risk of injury. In this case, too, it is ensured that the knife 20′ can only be pushed onto the blade journal 10′, and mounted in place, in a particular orientation. After the knife 20′ has been mounted, the partial inner surfaces 231, 232, 233, 234 and the coding element 20′ fit snugly against the circumferential surface 15 of the blade journal 10; see FIG. 6. The cutting edges 26 on the knife blades 25 of the knife 20′ are aligned in each case in the direction of rotation D and a good cutting operation is ensured. When using the method shown in FIG. 4, with the rib 14′ as a coding element which projects beyond the partial circumferential surface 151, 152, the only knife journals 20′ that can be mounted are those with a corresponding groove.

LIST OF REFERENCE SIGNS

[0026] 10, 10′—Knife journal [0027] 11—Connecting section [0028] 12—Contact surface [0029] 13—Storage section [0030] 14, 14′—Coding element [0031] 15—Circumferential surface [0032] 151, 152, 153, 154—Partial circumferential surface [0033] 20, 20′—Knife [0034] 21—Hub [0035] 22—Through-hole [0036] 23—Inner surface (drive surface) [0037] 231, 232, 233, 234—Partial inner surface [0038] 24, 24′—Coding element [0039] 25—Knife blade [0040] 26—Cutting edge [0041] D—Direction of rotation