DE8527599U1 - Double-edged knife with collar for meat grinders - Google Patents

Description

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'DIPLrING, HORST R £ $ JE; 0! ΡΧΛΝ & PfcTfcß. KOSEL DlPL ^ NG. PETER SOBSSCK

PATENT LAWYERS APPROVED BY THE EUROPEAN PATENT OFFICE - EUROPEAN PATENT ATTORNEYS

Patent Attorneys Rose. Kosei & Sobisch P.O. Box 129.D-3353 Bad Gandershein- * 1

Odastrasse 4a P.O. Box 129

D-3353 Bad Gandersheim 1

Telephone (O 53 82) 40 38 ^Tele>< 957422 sledp d Telegram address: Siedpatent Badgandersheim

September 26, 1985

Your file number:

Our file number: ο λ no / α

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Carl Sülberg GmbH & Co.

Double-edged knife with collar for meat grinders

The invention relates to a knife according to the preamble of claim 1.

A known knife of this type (DIN 98 03, December 1965 edition) is made in one piece. The knife is drop forged. The forging blank must subsequently be remunerated in a differentiated manner with considerable effort so that finally the knife collar has a hardness of HRC 33 + 5 and the knife blades a hardness of HRC 52 + 3. The forged blank thus tempered must then be ground to a large extent.

The invention is based on the object of producing the knife in a simpler and more cost-effective manner.

This task is carried out by the identification part of the Claim 1 specified features solved. Preferably

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the collar and the body are drop forged. The material used is e.g. 42 CrMo 4 with the material no. 1.7225 or 45 Cr 2 with material no. 1 * 7005 into consideration. The forging blank existing on the collar and the base body is normalized and set to a hardness of continuously HRC 28 to 32 remunerated. The comparatively higher hardness at the cutting edges of the knife wing will achieved by the cutter body made of a hard alloy, which are firmly connected to the respective base body. As a hard alloy, e.g. X 155 CrVMoI2 1 comes with the Material number. 1.2379 into consideration. Through this combination of materials, the finished knife has the desired hardness in each of its areas. The manufacture is greatly simplified compared to the known knives.

The profiling according to claim 2 is simple and inexpensive produce and facilitates the firm connection between the base body and the associated cutting bodies .

The training according to claim 3 is easy to manufacture.

The design according to claim 4 also contributes to reducing production costs.

The features of claim 5 facilitate the manufacture and subsequent installation of the knife collar.

The solder layer according to claim 6 ensures a particularly strong and inexpensive connection between Pad and cutter body.

The formation of the cutter body according to claim 7 is on the one hand inexpensive and on the other hand has a good wear behavior.

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The common level according to claim 8 can be ζ.Β, on easy way to produce inexpensive by grinding.

The feature according to claim 9 can be implemented in the same operation as that according to claim 8.

The feature of claim 10 results in optimal Cutting conditions on the cutting bodies ^ The bevels can preferably be sanded.

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Further features and advantages of the invention result from the following drawings, in which an embodiment of the invention is shown. Show it:

Fig. 1 is a plan view of a knife with four knife blades,

Fig. 2 shows the view along line II-II in Fig. 1 and

3 shows the sectional view along line III-III in FIG. 1 in enlarged view.

Fig. 1 shows a knife 1 for meat grinders with a collar 3 having an axial receiving opening 2 and with four two axially opposite cutting edges 4 and knife blades 6 having each other.

All knife wings € are pre-turned on their circumference and finally n.it one. Diameter 7 ground, the runs through the longitudinal axis 8 of the knife.

The collar 3 and a base body 9 of each blade 6 are forged in one piece from a material of relatively low hardness in the drop. In Fig. 3 is another Die bevel 10 can be seen.

The forging blank produced in this way has been turned over. As a result, on the one hand, end faces are plane-parallel to one another 11 and 12 (see also Fig. 2) of the collar 3 with a substantially spiral. caused by turning Profiling 13 arises. On the other hand, as a result of this over-turning, plane-parallel? Front sides 14 and 15 (see also Fig. 2 and 3) of the knife *

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result in a wing with a profiling 16 caused by the turning. So all end faces 14 are in one common plane perpendicular to the longitudinal axis θ, while in the same way all end faces 15 in one common plane parallel to the aforementioned plane.

A part of each end face 14, 15 forms a connecting surface 17 and 18 (FIG. 3), which are also provided with the profile 16. Along the pads 17, 18 are each blade body 21 and 22 of a hard alloy fixed to the züge- \ impaired base 9 with a solder layer 19 and the twentieth

Each cutter body 21, 22 is approximately triangular Cross-sectional area (Fig. 2 and 3), wherein a cathetus 23 of the associated terminal surface 17 is opposite and the other cathetus 24 defines the cutting edge 4 and 5, respectively.

The two other cathets 24 are each front surfaces 25 and 26 of the cutter bodies 21, 22 of each knife flight ice 6 defined. These two front surfaces 25, 26 are in a common position as a result of subsequent grinding Plane in which a front surface 27 of the associated base body 9 is also arranged.

The two cutter bodies 21, 22 of each knife wing 6 are at their free, the cutting edges 4, 5 defining The ends are provided with bevels 26 and 29 that are parallel to each other. The bevels 28, 29 have also been ground, ι

Patent attorneys Dipl.-Inge. Rose, Kosel & Sobisch

Claims (10)

DIPL-ING. HORST ROSE DIPlJ-IWG. PETER KOSEL DIPL.-ING. PETER SOBISCH PATENTANWÄLTE APPROVED AT THE EUROPEAN PATENT OFFICE - EUROPEAN PATENT ATTORNEYS Patentanwälte Rose Kose1 & So & scr. Postfach 129 D-3353 Bad Gamersr.er 1 Odastrasse 4a Postfach 129 D-3353 Bad Gandersheim 1 Telephone (O 53 82) 40 38 Te | e * 957422 siedp d Telegrannm address: Siedpatent Badgandersheim September 26, 19b5 Your files. No. Our file number: 240c / 9 Carl Sülberg GmbH & Co. SCKUTZAKS P R Ü C H E 1. Kesser (1) for meat grinders with an axial one Receiving opening (2) having collar (3) and several, with ^ em Buna (3) verbuncenen, each have two axially opposite cutting edges (^, 5) Knife blades (6), A characterized in that the Buna (3) and a base body (9) of each knife wing (6) are made in one piece from a material of relatively low Hsrce, and that with axially opposite connection surfaces (17,1c) each base body (9) has one aer Schneiakanten is (4,5) defining Schneiaenkörper (21,22) verbunaen determined from a Har ⁺ alloy verhältnismVßig rough play. 2. Knife according to claim 1, characterized in that the Anfachlußflachen (17,1b) is caused by turning Profiling (16) pointers. PK / J ti 11 «T t ■ «III III · · 4« · tt t ■ .- • 'do. .: ■ ' ¹ O' 3j "tr Ν · t, f" i ^! χ «« * ■ ■ ■ * «I t -2- 3 knife according to claim 1 or 2, characterized in that that the connection surfaces (17, 18) of each knife wing (6) plane-parallel to each other and at right angles to the longitudinal axis (8) of the knife (1) are arranged and have a profiling (16) caused by turning. 4. Knife according to one of claims 1 to 3, characterized in that that the end faces (14, 15) containing the connecting surfaces (17, 18) of each knife blade (6) are flat (parallel to each other and at right angles to the longitudinal axis '10 (8) of the knife (1) are arranged and a -urch Have turning caused profiling (16). 5. Knife according to one of claims 1 to 4, characterized in that end faces (11, 12) of the collar (3) are arranged plane-parallel to one another and at right angles to the longitudinal axis (L ·) of the knife (1) and one have profiling (13) caused by lathe operators. 6. Knife according to one of claims 1 to 5, characterized in that a solder layer (19, 20) is arranged between each connection surface (17, 16) and the associated snow body (21, 22). ί 7. Knife according to one of claims 1 to 6, characterized in that that each cutter body (21,22) of at least approximately triangular cross-sectional area is, wherein a cathetus (23) of the associated connection surface (17,1t) is opposite and the other cathetus (24) defines the cutting edge (4,5). 6. Kesser according to An £ pruch 7, characterized in that Front surfaces (25,26) of the cutting bodies (21,22) each defined by the two other cathets (24,24) Messerflüfels (6) are ir a common plane. 9. Knife according to claim c, characterized in that also a front flat (27) of the associated base body (9) lies in the plane. -3- I I I I I I I · I ■ I <ι · «ι ι. ι t i i ι t I t. I I I I · I Il It -3- 10. Knife according to one of claims 1 to 9, characterized in that that the two cutting bodies (21,22) of each knife wing (6) at their free, the cutting edges (4,5) defining ends are provided with bevels (26,29) that are parallel to each other. Patent Attorneys Dipi.-Inge. Rose, Kosel & Sobisch