EP0913201B1 - Cutting assembly for food grinding machines - Google Patents
Cutting assembly for food grinding machines Download PDFInfo
- Publication number
- EP0913201B1 EP0913201B1 EP97118342A EP97118342A EP0913201B1 EP 0913201 B1 EP0913201 B1 EP 0913201B1 EP 97118342 A EP97118342 A EP 97118342A EP 97118342 A EP97118342 A EP 97118342A EP 0913201 B1 EP0913201 B1 EP 0913201B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cutting assembly
- food
- assembly according
- jacket
- holes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/30—Mincing machines with perforated discs and feeding worms
- B02C18/301—Mincing machines with perforated discs and feeding worms with horizontal axis
Definitions
- the present invention relates to a cutting assembly for food grinding machines, according to the preamble of claim 1.
- a cutting assembly is known from DE 16 32 132 A.
- Conventional grinding machines used in the alimentary field are essentially constituted by a screw feeder, which is inserted in a specifically provided cylindrical seat arranged downstream of an inlet, is turned by a specifically provided motor and conveys the food towards a plurality of blades which rotate coaxially thereto, are fitted on the same driving shaft as the screw feeder, are grouped in a pack and are alternated with perforated screening diaphragms.
- the diaphragms are arranged in a gradually decreasing sequence as regards both the density of the holes that affect each diaphragm and the diameter of the holes, so as to gradually provide, as the food advances outwards, a progressively finer reduction of the particle size of the mass.
- this entails, especially in the industrial use of grinding machines, the use of motors with a high power rating, even as high as 70 HP, in order to overcome the resistance opposed by the mass being processed.
- the principal aim of the present invention is to solve the above problems of the known art by providing an improved cutting assembly for food grinding machines which substantially reduces the pressure produced during processing, eliminates the possibility of releasing structural particles into the food and maintains a constant density of the distribution of the holes as the screening capacity gradually becomes finer.
- an improved cutting assembly for food grinding machines characterized in that it comprises a static outer jacket provided with conventional means for coupling to the loading inlet of a grinding machine, annular recesses being formed in the internal thickness of said jacket, said recesses having preset volumes and being mutually separated, a food pusher element being mounted inside said jacket so that it rotates coaxially, a screening means with differentiated passage regions being interposed between said pusher and said jacket, each region acting at said annular recesses.
- the reference numeral 1 generally designates the cutting assembly for food grinding machines, which comprises a static outer jacket 2 provided with conventional means 3 for coupling to a loading inlet of a grinding machine, which is not illustrated since it is of a conventional kind.
- a plurality of annular recesses 4 is formed in the internal thickness of the jacket 2; the recesses have preset volumes and are mutually separated.
- a food cutter and pusher element 5 is mounted inside the jacket 2 so as to rotate coaxially and is supported in the grinding machine through conventional means which are adapted to keep it constantly centered; a screening means 6 is interposed between the cutter and pusher element 5 and the jacket 2 and is divided into differentiated passage regions Z 1 , Z 2 , Z 3 and Z 4 , each of which can be crossed at each annular recess 4.
- All of the recesses have a transverse cross-section with rounded edges which are blended with the concurrent ones by means of a respective convex profile 7, so as to define a forced path for the food, on which the screening means 6 rests and is locked.
- the cutter and pusher element 5 is constituted, in detail, by a screw-shaped blade 8, the spiral edge 8a of which is advantageously sharp and rotates so as to skim the internal surface of the screening means 6.
- the screening means is constituted by a thin cylindrical body 9, the surface of which is affected by contiguous bands of sets of through holes 10 which constitute the differentiated passage regions Z 1 , Z 2 , Z 3 , Z 4 in which the ratio between the continuous surface and the perforated surface is constant throughout.
- the static outer jacket 2 can flare outwards, as shown in figure 2; accordingly, the screw-shaped blade 8 also has the same shape, and so does the interposed cylindrical body 9 that constitutes the screening means 6, which in this case is constituted by the coaxial and sequential joining of a plurality of cylinders 9a, 9b, 9c, 9d whose diameters gradually increase outwards; each cylinder defines one of the regions Z 1 , Z 2 , Z 3 , Z 4 , and the cylinders are mutually joined by means of corresponding perforated collars 11.
- each one of the cylinders 9a, 9b, 9c, 9d has lateral surfaces affected by the corresponding 9c, 9d has lateral surfaces affected by the corresponding sets of through holes 10 whose diameters decrease for each cylinder, so that the ratio between the perforated surface and the continuous surface is constant for each cylinder.
- the axis A' of the holes 10 is directed towards the outlet.
- the food to be ground is introduced normally in the grinding machine through a hopper and passes from there into the seat in which the conventional screw feeder rotates; the cutting assembly 1 is installed coaxially at the head of said screw feeder.
- the conveyance motion forces the food to pass through the various regions Z 1 , Z 2 , Z 3 , Z 4 , following the forced path defined between the annular recesses 4 and the grooves 8b which are alternated with the spiral edge 8a, as shown in figure 1 by the arrows "A"; in following this path, the mass of food passes through the holes 10, whose diameters gradually decrease along the path, thus providing a gradually finer shredding action.
- the number of the holes 10 for each region Z is such as to maintain a constant ratio between the continuous surfaces of the regions Z and the perforated ones, so as to considerably reduce the pressure applied by the mass of food in passing through them.
- cylindrical body 9 is static, tangential stress, and therefore also abrasion, between the spiral edge 8a of the screw-shaped blade 8 and the cylindrical body 9, in which the regions Z are formed, are also eliminated, and the blade is always centered as it rotates.
- the materials used may be any according to the requirements without thereby abandoning the scope of the protection of the appended claims.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Pulverization Processes (AREA)
- Preparation Of Fruits And Vegetables (AREA)
- Food-Manufacturing Devices (AREA)
Abstract
Description
- The present invention relates to a cutting assembly for food grinding machines, according to the preamble of claim 1. Such a cutting assembly is known from DE 16 32 132 A.
- Conventional grinding machines used in the alimentary field are essentially constituted by a screw feeder, which is inserted in a specifically provided cylindrical seat arranged downstream of an inlet, is turned by a specifically provided motor and conveys the food towards a plurality of blades which rotate coaxially thereto, are fitted on the same driving shaft as the screw feeder, are grouped in a pack and are alternated with perforated screening diaphragms.
- The diaphragms are arranged in a gradually decreasing sequence as regards both the density of the holes that affect each diaphragm and the diameter of the holes, so as to gradually provide, as the food advances outwards, a progressively finer reduction of the particle size of the mass.
- However, especially in the processing of very dense food or of food having a fleshy pulp, the resistance that occurs when the mass passes between the diaphragms generates a very intense pressure, which is transmitted and distributed to said diaphragms, to the rotating blades and to the screw feeder.
- Accordingly, this entails, especially in the industrial use of grinding machines, the use of motors with a high power rating, even as high as 70 HP, in order to overcome the resistance opposed by the mass being processed.
- As a further consequence, there is provided a gradual deterioration not only of the sharpness of the blades but also of their structure, which by wearing very quickly require their replacement on the average every 4-5 working hours in addition to releasing microscopic fragments into the food.
- Another problem of the known art in this field is the fact that in the diaphragms, the perforations that allow passage through them are distributed on each diaphragm with a decreasing density with respect to their surfaces, and this worsens the problem of the pressure applied by the food mass.
- The principal aim of the present invention is to solve the above problems of the known art by providing an improved cutting assembly for food grinding machines which substantially reduces the pressure produced during processing, eliminates the possibility of releasing structural particles into the food and maintains a constant density of the distribution of the holes as the screening capacity gradually becomes finer.
- This aim, these objects and others are achieved by an improved cutting assembly for food grinding machines, characterized in that it comprises a static outer jacket provided with conventional means for coupling to the loading inlet of a grinding machine, annular recesses being formed in the internal thickness of said jacket, said recesses having preset volumes and being mutually separated, a food pusher element being mounted inside said jacket so that it rotates coaxially, a screening means with differentiated passage regions being interposed between said pusher and said jacket, each region acting at said annular recesses.
- Further characteristics and advantages will become apparent from the description of a preferred embodiment of a cutting assembly for food grinding machines, illustrated only by way of non-limitative example in the accompanying drawings, wherein:
- figure 1 is a longitudinal sectional view of the invention according to a first embodiment of the present invention;
- figure 2 is a transverse sectional view, taken along the plane II-II of figure 1;
- figure 3 is a sectional view of a second embodiment of the present invention;
- figure 4 is a transverse sectional view, taken along the plane IV-IV of figure 3.
-
- With particular reference to the above figures, the reference numeral 1 generally designates the cutting assembly for food grinding machines, which comprises a static
outer jacket 2 provided withconventional means 3 for coupling to a loading inlet of a grinding machine, which is not illustrated since it is of a conventional kind. - A plurality of
annular recesses 4 is formed in the internal thickness of thejacket 2; the recesses have preset volumes and are mutually separated. - A food cutter and
pusher element 5 is mounted inside thejacket 2 so as to rotate coaxially and is supported in the grinding machine through conventional means which are adapted to keep it constantly centered; a screening means 6 is interposed between the cutter andpusher element 5 and thejacket 2 and is divided into differentiated passage regions Z1, Z2, Z3 and Z4, each of which can be crossed at eachannular recess 4. - All of the recesses have a transverse cross-section with rounded edges which are blended with the concurrent ones by means of a
respective convex profile 7, so as to define a forced path for the food, on which the screening means 6 rests and is locked. - The cutter and
pusher element 5 is constituted, in detail, by a screw-shaped blade 8, the spiral edge 8a of which is advantageously sharp and rotates so as to skim the internal surface of the screening means 6. - The screening means is constituted by a thin
cylindrical body 9, the surface of which is affected by contiguous bands of sets of throughholes 10 which constitute the differentiated passage regions Z1, Z2, Z3, Z4 in which the ratio between the continuous surface and the perforated surface is constant throughout. - In a possible alternative embodiment, the static
outer jacket 2 can flare outwards, as shown in figure 2; accordingly, the screw-shaped blade 8 also has the same shape, and so does the interposedcylindrical body 9 that constitutes the screening means 6, which in this case is constituted by the coaxial and sequential joining of a plurality ofcylinders 9a, 9b, 9c, 9d whose diameters gradually increase outwards; each cylinder defines one of the regions Z1, Z2, Z3, Z4, and the cylinders are mutually joined by means of correspondingperforated collars 11. - In this case, too, each one of the
cylinders 9a, 9b, 9c, 9d has lateral surfaces affected by the corresponding 9c, 9d has lateral surfaces affected by the corresponding sets of throughholes 10 whose diameters decrease for each cylinder, so that the ratio between the perforated surface and the continuous surface is constant for each cylinder. - In order to better facilitate the advancement of the mass of processed food, the axis A' of the
holes 10 is directed towards the outlet. - The operation of the present invention can be easily deduced from the above description: the food to be ground is introduced normally in the grinding machine through a hopper and passes from there into the seat in which the conventional screw feeder rotates; the cutting assembly 1 is installed coaxially at the head of said screw feeder.
- The food, after the action of said screw feeder, is pushed further by the
blade 8, which is also screw-shaped, and the spiral edge 8a of said blade rotates so as to skim thecylindrical body 9 and is kept centered therein with conventional means for supporting it on the machine; at the same time, the food is engaged and cut by said spiral edge 8a, which is conveniently sharp. - The conveyance motion forces the food to pass through the various regions Z1, Z2, Z3, Z4, following the forced path defined between the
annular recesses 4 and thegrooves 8b which are alternated with the spiral edge 8a, as shown in figure 1 by the arrows "A"; in following this path, the mass of food passes through theholes 10, whose diameters gradually decrease along the path, thus providing a gradually finer shredding action. - It should also be noted that the number of the
holes 10 for each region Z is such as to maintain a constant ratio between the continuous surfaces of the regions Z and the perforated ones, so as to considerably reduce the pressure applied by the mass of food in passing through them. - Moreover, since the
cylindrical body 9 is static, tangential stress, and therefore also abrasion, between the spiral edge 8a of the screw-shaped blade 8 and thecylindrical body 9, in which the regions Z are formed, are also eliminated, and the blade is always centered as it rotates. - It has thus been shown that the described invention achieves the intended aim and objects.
- The present invention thus conceived is susceptible of numerous modifications and variations, all of which are within the scope of the inventive concept.
- All the details may also be replaced with other technically equivalent elements.
- In the practical embodiment of the present invention, the materials used, as well as the shapes and the dimensions, may be any according to the requirements without thereby abandoning the scope of the protection of the appended claims.
- Where technical features mentioned in any claim are followed by reference signs, those reference signs, have been included for the sole purpose of increasing the intelligibility of the claims and accordingly, such reference signs do not have any limiting effect on the interpretation of each element identified by way of example by such reference signs.
Claims (9)
- A cutting assembly for food grinding machines, comprising a static outer jacket (2) provided with conventional means for coupling (3) to the loading inlet of a grinding machine, annular recesses (4) being formed in the internal thickness of said jacket (2), said recesses (4) having preset volumes and being mutually separated, a food pusher and cutter element (5) being mounted inside said jacket (2) so that it rotates coaxially, characterized in that it comprises a screening means (6) with differentiated passage regions (Z1-Z4), each of which can be crossed at said annular recesses (4), being interposed between said pusher (5) and said jacket (2).
- A cutting assembly according to claim 1, characterized in that said annular recesses (4) have a transverse cross-section with rounded edges which are blended with concurrent edges with a convex profile and are adapted to define a forced path for the food, each convex profile furthermore acting as supporting and locking element for said screening means (6).
- A cutting assembly according to claim 1, characterized in that said cutter and pusher element is constituted by a screw-shaped blade, a sharp spiral edge of which rotates so as to skim an internal surface of said screening means.
- A cutting assembly according to claim 1, characterized in that said screening means (6) is constituted by a thin hollow cylindrical body, the surface of which is affected by contiguous bands of sets of through holes (10), which constitute said differentiated passage regions.
- A cutting assembly according to claim 4, characterized in that the ratio between the surface with said through holes (10) and the remaining portion of surface of said regions is constant for each region.
- A cutting assembly according to claim 1, characterized in that said static outer jacket (2) flares outwards.
- A cutting assembly according to claim 6, characterized in that said screening means (6) with differentiated through regions is constituted by a hollow body which is formed by the coaxial and sequential joining of a plurality of cylinders whose diameters increase gradually outwards, each one of said cylinders defining a region, said cylinders being mutually joined by means of corresponding perforated collar (11), each one of said cylinders having corresponding sets of through holes whose diameters decrease for each cylinder.
- A cutting assembly according to claim 7, characterized in that the ratio between the surface with said through holes (10) and the remaining portion of the surface is constant for each cylinder.
- A cutting assembly according to claim 7, characterized in that the axis of said holes (10) is orientated along the food advancement direction.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT97118342T ATE230633T1 (en) | 1997-10-22 | 1997-10-22 | CUTTING DEVICE FOR A MACHINE FOR CUTTING FOOD |
EP97118342A EP0913201B1 (en) | 1997-10-22 | 1997-10-22 | Cutting assembly for food grinding machines |
ES97118342T ES2187714T3 (en) | 1997-10-22 | 1997-10-22 | CUTTING DEVICE FOR FOOD MOLTURING MACHINES. |
DE69718323T DE69718323T2 (en) | 1997-10-22 | 1997-10-22 | Cutting device for a machine for chopping food |
CA002219555A CA2219555A1 (en) | 1997-10-22 | 1997-10-29 | Cutting assembly for food grinding machines |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97118342A EP0913201B1 (en) | 1997-10-22 | 1997-10-22 | Cutting assembly for food grinding machines |
CA002219555A CA2219555A1 (en) | 1997-10-22 | 1997-10-29 | Cutting assembly for food grinding machines |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0913201A1 EP0913201A1 (en) | 1999-05-06 |
EP0913201B1 true EP0913201B1 (en) | 2003-01-08 |
Family
ID=31716401
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97118342A Expired - Lifetime EP0913201B1 (en) | 1997-10-22 | 1997-10-22 | Cutting assembly for food grinding machines |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0913201B1 (en) |
AT (1) | ATE230633T1 (en) |
CA (1) | CA2219555A1 (en) |
DE (1) | DE69718323T2 (en) |
ES (1) | ES2187714T3 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113477358B (en) * | 2021-08-20 | 2022-06-10 | 谢佳娴 | Mill is with abandonment steel pipe recovery plant |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE603536C (en) * | 1933-03-22 | 1934-10-08 | Josef Scholtes | Device for cutting food, in particular meat |
US2582244A (en) * | 1946-10-18 | 1952-01-15 | Electrolux Ab | Grater having rotatable feed means |
DE1632132A1 (en) * | 1967-10-12 | 1970-10-29 | Strojirny Potravinarskeho Prum | Method and device for particularly fine mincing of meat |
US4997137A (en) * | 1989-06-30 | 1991-03-05 | Peggy Elizabeth Tolonen | Apparatus for grinding materials |
DE19516716A1 (en) * | 1995-05-06 | 1996-11-14 | Inofex Gmbh | Tubular mincer for foodstuff |
-
1997
- 1997-10-22 AT AT97118342T patent/ATE230633T1/en not_active IP Right Cessation
- 1997-10-22 ES ES97118342T patent/ES2187714T3/en not_active Expired - Lifetime
- 1997-10-22 DE DE69718323T patent/DE69718323T2/en not_active Expired - Fee Related
- 1997-10-22 EP EP97118342A patent/EP0913201B1/en not_active Expired - Lifetime
- 1997-10-29 CA CA002219555A patent/CA2219555A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
DE69718323D1 (en) | 2003-02-13 |
CA2219555A1 (en) | 1999-04-29 |
ATE230633T1 (en) | 2003-01-15 |
ES2187714T3 (en) | 2003-06-16 |
DE69718323T2 (en) | 2003-05-15 |
EP0913201A1 (en) | 1999-05-06 |
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