EP4104970B1 - Grinding device for a slice cutting machine with a positioning aid - Google Patents

Description

The invention relates to a grinding device for a disc cutting machine for cutting slices from, in particular, strand-shaped material to be cut, preferably food, the grinding device comprising a grinding stone for sharpening a rotating circular knife of the disc cutting machine and a honing stone for deburring the circular knife, the grinding device having a handle around which To move the grinding stone and/or the honing stone to the circular knife, and wherein the grinding device has a holder for attachment to a stop plate of the disc cutting machine with an insertion device for positive insertion into the stop plate, the holder having a U-shaped plate holder with a gap for inserting the Stop plate in the gap when pushing the sander onto the stop plate.

Such a grinding device is known WO 2012/175403 A1 (= reference [0]) or off WO 2020/185153 A1 (= reference [00]).

The invention also relates to a disc cutting system with such a grinding device and a disc cutting machine.

References [0] and [00] also disclose a disc cutting machine with a machine housing which holds a drive motor and a rotating and/or revolving circular knife driven by the drive motor, a cutting edge of the circular knife being covered in a first section by a knife protection ring, and wherein the disc cutting machine comprises a slidably arranged carriage.

Background of the invention

The US 7,134,937 B1 (= Reference [1]) relates to a cutting machine for food products with a rotating cutting knife. The cutting machine includes a sharpener and an associated knife guard assembly having a guard positioned on a knife guard ring to protect the cutting edge of the knife when the sharpener is in its standby or non-sharpening state. When grinding, part of the knife protection ring is opened so that the grinding device can touch the cutting edge of the knife.

The EP 1 922 189 B1 (= Reference [2]) relates to a food slicer having a rotating cutting blade and a sharpening mechanism for sharpening the cutting blade, the sharpening mechanism being releasably attached to a portion of a product table for moving with the product table and for sharpening the cutting blade to care. The sharpening mechanism includes a rotating sharpening element and a deburring element, the sharpening element and the deburring element being mounted independently of one another. The sharpening mechanism is removably mounted in a pocket formed on a lower portion of the food product table facing the knife.

In order to ensure reliable functioning of the grinding device and a satisfactory grinding process, the grinding stone and honing stone must be aligned with the circular knife with very small tolerances. For this reason, the grinding device must be able to be attached to the disc cutting machine with small tolerances in relation to the circular knife.

Since components such as the knife protection ring and slide do not meet these tolerance requirements, all grinding devices known from the prior art must ensure correct geometric positioning of the grinding stone and the sharpening stone must be adjusted and aligned with the disc cutting machine during production in relation to the circular knife of the disc cutting machine. Previously, this adjustment had to be made during production, for example using slotted holes. This means that a grinding device is always assigned to a single, specific, individual cutting machine. Particularly if the grinding device has to be attached to a knife protection ring or uses the knife protection ring as a stop for the mounting position, the assignment of a grinding device to a specific disc cutting machine is necessary, since the knife protection ring is usually only within a rough geometric tolerance in relation to the circular knife on the Disc cutting machine is arranged. The assignment to a very specific disc cutting machine is necessary; an assignment of a grinding device to a disc cutting machine of a specific type is not sufficient here.

A grinding device for a disc cutting machine of a certain type can therefore never be used directly for another disc cutting machine without further adjustment, even if the other disc cutting machine is of exactly the same type as the first.

Task of the invention

In contrast, the present invention is based on the task - viewed in detail, which is relatively demanding - of providing a grinding device for grinding a circular knife, which, due to the way it is positioned on a disc cutting machine, can be easily used for many disc cutting machines of the same type without any further complex adjustment before the actual one Grinding process can be used. It is a further object of the invention to provide a disc cutting system with such a grinding device and a disc cutting machine.

Brief description of the invention

This object is achieved by the present invention in a surprisingly simple and effective manner in that, in a generic grinding device of the type defined at the outset, the insertion device has at least one nose, preferably two noses, for engaging in an associated recess in the stop plate or that the stop plate at least has a nose, preferably two noses, for engaging in an associated recess of the insertion device.

This eliminates the - hitherto always existing and serious - restriction of using a grinder only on a single specific disc cutting machine assigned to the grinder.

The noses are fixed by pushing them into the recesses, the recesses in particular forming positive receptacles for the noses. After inserting it into the recesses, the lugs prevent the sander from moving along the stop plate. The grinding device is aligned with the stop plate via the lugs and the associated recesses.

The stop plate is generally aligned with a relatively high degree of accuracy relative to the circular knife during production of the disc cutting machine, with this positioning being the same for many disc cutting machines, especially for those of the same type. The stop plate is usually attached to the machine housing with elongated holes and is thus adjusted to the circular knife. Due to the precise positioning of the stop plate, the position of the stop plate relative to the circular knife has no or only relatively small tolerances and is the same in particular on many disc cutting machines, even if the type varies slightly. By precisely positioning the grinder on the stop plate, which is determined by the lugs and the associated recesses, the grinder can be attached to each of these disc cutting machines with sufficiently small tolerances without having to make an exact new adjustment becomes necessary. As a result, a single grinding device for different disc cutting machines can be used for grinding the knife immediately after its assembly due to its precise positioning relative to the cutting knife. In other words, this has the beneficial effect that an adjustment during the production of a grinding device for a first disc cutting machine of a certain type also simultaneously includes an adjustment of the grinding device for a second disc cutting machine of the same type. The grinding device can therefore be used for several disc cutting machines of the same or similar type without having to readjust it again and again.

In particular in embodiments of the disc cutting machine whose stop plate can be moved in relation to the circular knife in a direction of the axis of rotation of the circular knife, the grinding device can be attached to the stop plate by means of the holder or removed from the stop plate if the distance between the stop plate and the knife protection ring is in Direction of the axis of rotation of the circular knife is smaller than a predetermined distance, that is, in particular when the stop plate is in a closed position. The grinding device can then be aligned with high precision on various disc cutting machines by moving the stop plate relative to the circular knife. The stop plate changes into an open position as a result of the process.

The disc cutting machine can in particular be designed as a vertical cutting machine or diagonal cutting machine.

In a first step, the grinding stone of the grinder touches the cutting edge from one side and thus sharpens the cutting edge. In a second step, the sharpening stone of the grinder touches the cutting edge from the other side and pulls off the knife, removing a burr, for example.

The scope of the present invention also includes a slice cutting system with a slice cutting machine for cutting slices made of in particular strand-shaped cutting material, preferably food, with a machine housing which holds a drive motor and a rotating circular knife driven by the drive motor, a cutting edge of the circular knife being covered in a first section by a knife protection ring, the slice cutting machine having a stop plate and a slidably arranged carriage comprises, via which the material to be cut is fed to the circular knife, the stop plate being movable in the direction of the axis of rotation of the circular knife, the disc cutting system having a grinding device for grinding the circular knife, the grinding device having a grinding stone for sharpening the circular knife and a honing stone for deburring the circular knife has, wherein the grinder has a handle to move the grindstone and / or the honing stone to the circular knife.

This disc cutting system is characterized according to the invention in that the grinding device has a holder for attachment to the stop plate with an insertion device for positive insertion into the stop plate, the holder having a, in particular U-shaped, plate holder with a gap for inserting the stop plate into the gap when pushing the grinding device onto the stop plate, and that the insertion device has at least one nose, preferably two noses, for engaging in an associated recess of the stop plate or that the stop plate has at least one nose, preferably two noses, for engaging in an associated recess of the insertion device having.

The grinding devices of such disc cutting systems can be used for a variety of disc cutting devices, especially of the same type, due to the way they are positioned. The stop plates are usually positioned with a high degree of accuracy in relation to the circular knife, this positioning being the same in particular for many disc cutting machines. By attaching it to the stop plate, the grinding device, which is attached to the stop plate, also has little or no wear Tolerance arranged to the circular knife. In particular, the positioning and orientation of the grinding device relative to the circular knife is the same in many disc cutting machines. This allows a grinder with precise positioning to be used for various disc cutting machines.

Preferred embodiments and further developments of the invention

A class of advantageous embodiments of the grinding device according to the invention is characterized in that the at least one nose is designed in particular to engage in a recess on a back side of the stop plate, and the back side of the stop plate is supported in the direction of the axis of rotation of the circular knife by a carriage Disc cutting machine is facing away. In this embodiment, the grinding device rests in particular on the front of the stop plate facing the carriage in order to grind the circular knife and, on the other hand, is attached to the back of the stop plate via the nose. The holder encompasses an upper edge of the stop plate when the stop plate is mounted. Due to the arrangement on both sides of the stop plate, the grinding device is held particularly stably in its position on the stop plate.

Embodiments of the grinding device according to the invention are also advantageous in which the holder for attaching the grinding device to a stop plate of the disc cutting machine has a threaded spindle for clamping the stop plate. The threaded spindle allows the stop plate to be connected to the grinder in a stable but manually detachable manner. The threaded spindle is located in particular on one side of the gap of the U-shaped plate holder in order to press the stop plate against the opposite side of the U-shaped plate holder and thereby clamp the grinding device to the stop plate.

Embodiments of the grinding device which are characterized in that the insertion device is formed on the inside of the gap in the plate holder are also advantageous. The stop plate in particular is guided along the inside of the gap when it is pushed into the gap. The insertion device is designed in particular in the form of the aforementioned lugs on the inside of the gap. While the plate holder grips around the stop plate during insertion in order to prevent the grinding device from moving in the direction of the axis of rotation of the circular knife, the insertion device on the inside of the gap prevents the grinding device from moving along the stop plate while the stop plate is being inserted.

In further embodiments of the grinding device, the insertion device has a tapering shape, in particular a U-shape, in one direction of the insertion. This means that the insertion device is centered when it is inserted into the stop plate holder, which makes insertion easier.

A further embodiment of the grinding device is characterized in that there is a receptacle of the grinding device for positively gripping around an end of a knife protection ring of the disc cutting machine, the receptacle being designed to grip around the end of the knife protection ring when the stop plate is at least in the direction of an axis of rotation of the circular knife has a predetermined distance from the circular knife, and not to grip around the end of the knife protection ring if the distance between the stop plate and the knife protection ring in the direction of the axis of rotation of the circular knife is smaller than the predetermined distance.

This avoids the risk of injury when assembling and dismantling the grinder as well as a lack of hygiene when using the grinder. If the distance between the stop plate and the knife protection ring in the direction of the axis of rotation of the circular knife is smaller than the predetermined distance, that is, in particular, if the If the stop plate is in a closed position, the holder does not encompass the end of the knife protection ring.

The sander can then be attached to the stop plate using the holder or removed from the stop plate. The circular knife covered by the stop plate and the knife protection ring cannot be touched when the stop plate is in the closed position, so there is no risk of injury. This means that the grinding device can advantageously be attached to the stop plate when it is still in the closed position and the disc cutting machine is still safe from injury. In other words, to ensure the safety of the user during grinding, the grinder is already mounted on the disc cutting machine when the disc cutting machine is in this safe state, that is, when the cutting blade is completely covered. In the closed position, the stop plate covers in particular a section of the cutting edge of the cutting knife that is not covered by the knife protection ring.

After assembling the grinding device with the stop plate in the closed position, the stop plate for grinding the circular knife is moved out of the closed position, so that the stop plate is at least a predetermined distance from the circular knife in the direction of an axis of rotation of the circular knife, that is, that the stop plate is in a is in the open position. This brings the grinding device closer to the now accessible cutting edge of the circular knife. When the stop plate is moved, the end of the knife protection ring is inserted in the direction of the axis of rotation of the circular knife into the receptacle, which surrounds the end of the knife protection ring in the open position of the stop plate. The receptacle in particular has a guide for inserting the knife protection ring.

The grinder works together with the knife protection ring when the stop plate is open. Together with the one inserted into the stop plate When the stop plate is in the open position, the insertion device of the grinder prevents the grinder from being removed while the circular knife is being sharpened, thereby putting the user at risk of a cut. In particular, when the stop plate is open, the grinding device cannot be removed either in a direction along the stop plate or perpendicular to this direction. By means of the holder of the grinder for the knife protection ring, the knife protection ring fixes the grinder when the stop plate is open, but not when the stop plate is closed.

The knife protection ring is preferably C-shaped to cover the circular knife.

A further development of the aforementioned embodiment of the grinding device according to the invention is characterized in that the receptacle is designed as a recess for inserting the end of the knife protection ring. The holder encompasses the end of the knife protection ring and thus ensures that the grinder is securely held at the end of the knife protection ring. As a recess, the receptacle is designed to be particularly material-saving.

In an advantageous embodiment, the grinding device has a frame for covering at least a portion of a cutting edge of the circular knife and for pivoting the grinding device from an installation position into a working position. The frame reduces the risk of a user being cut by the circular knife. The grinding device is mounted on the disc cutting machine in particular in the installation position, while the working position of the grinding device is intended to grind the circular knife by the grinding device.

In a further development of the aforementioned embodiment, the frame of the grinder includes cover plates to cover the cutting edge of the circular knife, with the grinding stone and the honing stone being arranged in particular between the cover plates. The cover plates protect a user from cutting injuries caused by the cutting edge of the circular knife due to their expansion during the movement of the stop plate. The cover plates, the grinding stone and the honing stone are arranged in particular in the circumferential direction of the circular knife, with the grinding stone and the honing stone being positioned between the cover plates.

Further embodiments of the grinding device according to the invention are characterized by a locking mechanism for locking the grinding device in the working position and/or in the installation position. This means that the grinding device is held in the respective position in a stable but manually releasable manner. The locking mechanism is formed, for example, by a locking pin and elastic elements on the sander.

A preferred variant of the grinding device according to the invention is characterized by a pivoting mechanism for pivoting the grinding device from the working position into the installation position. The pivoting mechanism preferably has a guide groove and/or a guide rail for guiding the grinding device during pivoting and/or a rotating pin about which the grinding device can be pivoted completely or partially. Particularly preferably, the aforementioned locking pin engages in the guide groove and/or is guided along the guide rail, whereby the grinding device can be pivoted between the locking positions from the working position to the installation position.

A further development of the aforementioned variant is characterized by a stop for the pivoting mechanism. The stop brakes the pivoting in a stable manner and acts as a buffer to protect the sander from mechanical damage caused by the pivoting.

A further preferred embodiment of the grinding device according to the invention is characterized in that the handle is used to move the The grinding stone and/or the honing stone to the circular knife of the disc cutting machine is designed as a wheel of the frame of the grinding device, the wheel being designed to move the grinding stone and/or the honing stone to the circular knife when rotating, so that they can be arranged on the circular knife, and/or can be moved away from the circular knife. The wheel and an associated rotating mechanism allow the grinding stone and/or honing stone to be adjusted in a space-saving manner.

An advantageous embodiment of the disk cutting system according to the invention described above is characterized in that the recess is preferably formed on a back side of the stop plate, which faces away from a carriage of the disk cutting machine in the direction of the axis of rotation of the circular knife. In this embodiment, the grinding device rests in particular on both sides of the stop plate and is therefore held particularly stably in its position on the stop plate.

Further advantages of the invention result from the description and the drawing. Likewise, according to the invention, the features mentioned above and those further detailed can be used individually or in groups in any combination. The embodiments shown and described are not to be understood as an exhaustive list, but rather have an exemplary character for describing the invention.

Detailed description of the invention and drawing

The invention is shown in the drawing and is explained in more detail using exemplary embodiments.

Fig. 1a

eine räumliche Ansicht einer als Schrägschneidemaschine ausgebildeten Scheibenschneidmaschine;

Fig. 1b

eine räumliche Ansicht einer als Vertikalschneidemaschine ausgebildeten Scheibenschneidmaschine;

Fig. 2a

eine Seitenansicht einer Scheibenschneidanlage umfassend eine Scheibenschneidmaschine und ein Schleifgerät in einer Installationsstellung;

Fig. 2b

eine Ansicht der Scheibenschneidanlage nach Fig. 2a von schräg oben;

Fig. 2c

eine Seitenansicht eines Teils der Scheibenschneidanlage nach Fig. 2a mit dem Schleifgerät in einer Arbeitsstellung;

Fig. 3a

eine Seitenansicht einer Ausführungsform des erfindungsgemäßen Schleifgeräts in der Installationsstellung;

Fig. 3b

eine Seitenansicht des Schleifgeräts nach Fig. 3a in der Arbeitsstellung;

Fig. 4a

eine Innenansicht des Schleifgeräts von einer Seite, die im montierten Zustand des Schleifgeräts einem Kreismesser der Scheibenschneidmaschine zugewandt ist;

Fig. 4b

eine Innenansicht des Schleifgeräts von einer Seite, auf der sich eine Halterung des Schleifgeräts befindet;

Fig. 4c

eine Innenansicht des Schleifgeräts von einer im montierten Zustand des Schleifgeräts unten befindlichen Seite;

Fig. 4d

eine Ansicht einer Halterung des Schleifgeräts mit einer Einschubeinrichtung;

Fig. 5

eine schematische räumliche Ansicht der Rückseite einer Anschlagplatte.

Show it:

Fig. 1a

a spatial view of a disc cutting machine designed as an oblique cutting machine;

Fig. 1b

a spatial view of a disc cutting machine designed as a vertical cutting machine;

Fig. 2a

a side view of a disc cutting system comprising a disc cutting machine and a grinder in an installed position;

Fig. 2b

a view of the disc cutting system Fig. 2a diagonally from above;

Fig. 2c

a side view of part of the disc cutting system Fig. 2a with the sander in a working position;

Fig. 3a

a side view of an embodiment of the grinding device according to the invention in the installation position;

Fig. 3b

a side view of the sander Fig. 3a in the working position;

Fig. 4a

an interior view of the grinder from a side that faces a circular knife of the disc cutting machine in the assembled state of the grinder;

Fig. 4b

an interior view of the grinder from one side, on which there is a holder for the grinder;

Fig. 4c

an interior view of the grinder from a side located below when the grinder is assembled;

Fig. 4d

a view of a holder of the sander with an insertion device;

Fig. 5

a schematic spatial view of the back of a stop plate.

The present invention relates to a grinding device for a disc cutting machine for cutting discs from, in particular, strand-shaped material to be cut, preferably food.

The Figures 1a and 1b show isometric views of a disc cutting machine designed as an oblique cutting machine or a vertical cutting machine. The Figures 2a to 2c show a grinding device according to the invention in an installation position and a working position on the bevel cutting machine. The Figures 3a to 4d show different views of the sander. The Fig. 5 shows a stop plate of the disc cutting machine with recesses for receiving noses of the grinder.

In Fig. 1a a disc cutting machine 10' designed as an oblique cutting machine is shown, to which a grinding device 22 according to the invention (cf. Fig. 2a ) can be attached. The disc cutting machine 10' comprises a cutting device 11 in a machine housing 12. The cutting device 11 has a rotatably mounted circular knife 13 . A cutting edge 14 of the circular knife 13 is covered in a first section by a knife protection ring 15 .

The disc cutting machine 10' further comprises a stop plate 16 and a slidably arranged carriage 17, via which a material to be cut (not shown) is fed to the circular knife 13. Here, the stop plate 16 is in the direction of the axis of rotation RA (see Fig. 2a ) of Circular knife 13 movable. In Fig. 1a the stop plate 16 is in an open position 18 at a distance from the circular knife 13 in the direction of the axis of rotation RA of the circular knife 13. The cutting edge 14 of the circular knife 13 is freely accessible. A knife cover 19 serves to protect against the circular knife 13 along its inner circumference. The knife protection ring 15 has an end 20 designed as a projection, which is inserted into a receptacle 43 of a grinding device 22 (see Fig. 4a ) is introduced. Are shown in Fig. 1a also elongated recesses 53a, 53b on the front of the stop plate 16 facing the slide 17 for associated bulges 52a, 52b of the grinding device 22 (see Fig. 4c ). If the elongated recesses 53a, 53b accommodate the bulges 52a, 52b, the recesses do not form a positive fit with the bulges. In particular, the bulges 52a, 52b can be circular in cross section, as in the embodiment of Fig. 4c is shown.

As an alternative to an oblique cutting machine 10 'according to Fig. 1a is in Fig. 1b a disc cutting machine 10" designed as a vertical cutting machine with the carriage 17, the stop plate 16 and the rotating circular knife 13 is shown, on which the grinding device 22 can also be mounted. The vertical cutting machine 10" is controlled via a dashboard 21 .

To grind the circular knife 13, which is rotatably mounted about the axis of rotation RA, the grinding device 22 is used, which is in an in Fig. 2a shown installation position 23 via a holder 24 on the stop plate 16 of a disc cutting machine 10 ', as shown in Fig. 1a is shown in the open position (cf. Fig. 1a ) is mounted. The grinding device 22 and the disc cutting machine 10' together form a disc cutting system 25.

The installation position 23 can be recognized in particular by the fact that a housing 26 protects the operating mechanism (not shown) of the Grinding device 22 is pivoted away from the circular knife 13 while this housing 26 is in a working position (see Fig. 2c ) is pivoted towards the circular knife 13. A locking mechanism 27 with a locking pin 28 locks the grinding device 22 in the installation position 23. The locking mechanism 27 also serves to place the grinding device 22 in a working position (see Fig. 2c ) to lock.

The pivoting from the working position into the installation position 23 takes place via a pivoting mechanism 30. The pivoting mechanism 30 has a guide 31 for guiding the grinding device 22 during pivoting. The housing 26 is pivoted about a rotation pin 32 of the pivot mechanism. The pivoting movement of the grinding device 22 in the direction of the installation position 23 is stopped by a stop 33 as a buffer.

The grinding device 22 has a handle 34 for moving a grinding stone 39 and a honing stone 40 (see Fig. 4a ) to the circular knife 13 of the disc cutting machine 10. The handle 34 is designed as a wheel 35 , which moves the grinding stone 39 and the honing stone 40 to the circular knife 13 or away from the circular knife 13 when rotating. The grinder 22 includes a frame 36 which carries the components described.

Fig. 2b shows for comparison with Fig. 1a the diagonal cutting machine 10' with the carriage 17, the stop plate 16 and the circular knife 13, with the grinding device 22 now being mounted on the stop plate 16 in the installation position 23.

To grind the circular knife 13, the grinding device 22 assumes a working position 38 , which is in Fig. 2c is shown. The housing 26 is compared to the installation position 23 (see Fig. 2a ) pivoted towards the circular knife 13 and spaced from the stop 33. The housing 26 has been pivoted about the rotary pin 32 from the installation position 23 into the working position 38. The carriage 17 cannot go over the entire length Slide stroke must be moved, otherwise it could collide with the grinding device 22 during its movement. In the carriage position shown, the carriage 17 covers a lower part of the cutting edge 14 of the circular knife 13. To protect a user, part of the circular knife 13 is also covered by the carriage 17. To lock the sander 22 in the installation position 23 (see Fig. 2a ) serves a second locking receptacle 29b.

Fig. 3a shows a side view of the grinder 22 in the installation position 23. The housing 26 of the grinder 22 rests on the stop 33. The locking mechanism 27 with the locking pin 28 locks the grinding device 22 in the installation position 23. The pivoting mechanism 30 with the guide 31 and the rotary pin 32 is also shown. The first locking receptacle 29a is also shown.

Fig. 3b shows a side view of the grinding device 22 in the working position 38. The housing 26 is pivoted about the rotary pin 32 along the guide 31 and spaced from the stop 33. The second locking receptacle 29b is also shown.

The grinding device 22 has the grinding stone 39 for sharpening the circular knife 13 (see Fig. 2a ) and the sharpening stone 40 for deburring the circular knife 13, which in Fig. 4a and Fig. 4b are shown. The grinding stone 39 and the honing stone 40 are turned into the circular knife 13 by means of the wheel 35 (see Fig. 2a ) emotional. On the holder 24 there is a threaded spindle 41 for clamping the stop plate 16 (see Fig. 2b ). The frame 36 of the grinding device 22 includes cover plates 42a, 42b to cover the circular knife 13. The grinding stone 39 and the honing stone 40 are arranged in the circumferential direction of the circular knife 13 between such cover plates 42a, 42b of the frame 36.

The receptacle 43 of the grinding device 22 is designed to hold the end 20 of the knife protection ring 15 (see Fig. 1a ) to be gripped in a form-fitting manner when the stop plate 16 is in the direction of the axis of rotation RA of the circular knife 13 (see Fig. 1b ) has a predetermined distance from the circular knife 13. The receptacle 43 does not encompass the end 20 of the knife protection ring 15 if the distance between the stop plate 16 and the knife protection ring 15 in the direction of the axis of rotation RA of the circular knife 13 is smaller than the predetermined distance. The receptacle 43 is designed as a recess 44 of the grinding device 22 for inserting the end 20 of the knife protection ring 15.

The holder 24 for attaching the sander 22 to the stop plate 16 (see Fig. 2a ) has an in Fig. 4c shown, in particular U-shaped, plate holder 45 with a gap 46 for inserting the stop plate 16 into the gap 46 when pushing the grinder 22 onto the stop plate 16. The threaded spindle 41 is located at the gap 46 of the plate holder 45. Bulges 52a, 52b of the holder 24 engage in associated recesses 53a, 53b on the front of the stop plate 16 (see Fig. 1a ) a. The holder 24 of the grinder 22 also has an insertion device 47 for positive insertion into the stop plate 16. The insertion device 47 includes two lugs 48a, 48b, which are inserted into associated recesses on a back side of the stop plate 16 (see Fig. 5 ) engage in particular in a form-fitting manner. The insertion device 47 with the lugs 48a, 48b is formed on an inside 49 of the gap 46 of the plate holder 45, on which the stop plate 16 is arranged in the assembled state of the grinding device 22. The noses 48a, 48b have a tapering U-shape in the direction of the insertion ER of the insertion device 47, as in Fig. 4d is shown in detail.

Two in Fig. 5 Recesses 50a, 50b of the stop plate 16 shown receive the lugs 48a, 48b of the insertion device (see FIG. 3c) in a form-fitting manner. The depressions 50a, 50b are formed on a back side 51 of the stop plate 16, which is in the direction of the rotation axis RA of the circular knife 13 (see Fig. 2a ) faces away from the carriage 17 of the disc cutting machine 10`.

Reference character list:

10'

Oblique cutting machine

10"

Vertical cutting machine

11

Cutting device

12

Machine housing

13

circular knife

14

cutting edge

15

Knife protection ring

16

stop plate

17

Sleds

18

open position of the stop plate

19

Knife cover

20

End of the knife protection ring

21

dashboard

22

grinder

23

Installation position

24

bracket

25

Disc cutting system

26

Housing

27

Latching mechanism

28

Locking pin

29a,b

Snapshots

30

Swivel mechanism

31

guide

32

Rotary pin

33

attack

34

Handle

35

wheel

36

Frame

38

Working position

39

Grindstone

40

whetstone

41

threaded spindle

42a, b

Cover plates

43

Recording

44

recess

45

Record recording

46

gap

47

Insertion device

48a, 48b

noses

49

Inside of the gap

50a, b

depressions

51

Back of the stop plate

52a,b

Bulges

53a,b

recesses

R.A

Axis of rotation

HE

Insertion direction

Reference list

• [0] WO 2012/175403 A1
• [00] WO 2020/185153 A1
• [1] US 7 134 937 B1
• [2] EP 1 922 189 B1

Publications considered for the assessment of patentability:

• [0] WO 2012/175403 A1
• [00] WO 2020/185153 A1
• [1] US 7,134,937 B1
• [2] EP 1 922 189 B1

Claims (15)

1. Grinding device (22) for a slice-cutting machine (10', 10") for cutting off slices of in particular strand-like cutting material, preferably food, the grinding device (22) comprising a grinding stone (39) for sharpening a rotating circular blade (13) of the slice-cutting machine (10', 10") and a honing stone (40) for deburring the circular blade (13), the grinding device (22) comprising a grip (34) in order to move the grinding stone (39) and/or the honing stone (40) to the circular blade (13), and the grinding device (22) having a holder (24) for fastening to a stop plate (16) of the slice-cutting machine (10', 10") with an insertion device (47) for form-fitting insertion into the stop plate (16), the holder (24) having a U-shaped plate receptacle (45) with a gap (46) for insertion of the stop plate (16) into the gap (46) when the grinding device (22) is pushed onto the stop plate (16),
   characterized in that
   the insertion device (47) has at least one lug (48a, 48b) for engaging in an associated deepening (50a, 50b) of the stop plate (16), or in that the stop plate (16) has at least one lug (48a, 48b) for engaging in an associated deepening (50a, 50b) of the insertion device (47).
2. Grinding device according to claim 1, characterized in that the at least one lug (48a, 48b) is designed to engage in a deepening (50a, 50b) on a rear face (51) of the stop plate (16), the rear face (51) of the stop plate (16) facing away from a carriage (17) of the slice-cutting machine (10', 10") in the direction of the axis of rotation (RA) of the circular blade (13).
3. Grinding device according to either of the preceding claims,
   characterized in that the holder (24) for fastening the grinding device (22) to the stop plate (16) of the slice-cutting machine (10', 10") has a threaded spindle (41) for clamping the stop plate (16).
4. Grinding device according to any of the preceding claims,
   characterized in that the insertion device (47) is formed on the inner face (49) of the gap (46) of the plate receptacle (45).
5. Grinding device according to any of the preceding claims,
   characterized in that the insertion device (47) has a tapered shape, in particular a U shape, in one direction of the insertion (ER).
6. Grinding device according to any of the preceding claims,
   characterized in that a receptacle (43) of the grinding device (22) is present for form-fitting engagement of an end (20) of a blade protection ring (15) of the slice-cutting machine (10', 10"), the receptacle (43) being designed to surround the end (20) of the blade protection ring (15) when the stop plate (16) has at least a predetermined distance from the circular blade (13) in the direction of an axis of rotation (RA) of the circular blade (13), and then not to engage around the end (20) of the blade protection ring (15) when the distance between the stop plate (16) and the blade protection ring (15) is smaller than the predetermined distance in the direction of the axis of rotation (RA) of the circular blade (13).
7. Grinding device according to claim 6, characterized in that the receptacle (43) is designed as a recess (44) for insertion of the end (20) of the blade protection ring (15).
8. Grinding device according to any of the preceding claims,
   characterized in that the grinding device (22) has a frame (36) for covering at least one portion of a cutting edge (14) of the circular blade (13) and for pivoting the grinding device (22) from an installation position (23) into a working position (38).
9. Grinding device according to claim 8, characterized in that the frame (36) of the grinding device (22) comprises cover plates (42a, 42b) for covering the cutting edge (14) of the circular blade (13), the grinding stone (39) and the honing stone (40) being arranged in particular between the cover plates (42a, 42b).
10. Grinding device according to any of the preceding claims, characterized by a locking mechanism (27) for locking the grinding device (22) in the working position (38) and/or in the installation position (23).
11. Grinding device according to any of the preceding claims, characterized by a pivoting mechanism (30) for pivoting the grinding device (22) from the working position (38) into the installation position (23).
12. Grinding device according to claim 11, characterized by a stop (33) for the pivoting mechanism (30).
13. Grinding device according to any of the preceding claims,
    characterized in that the grip (34) for moving the grinding stone (39) and/or the honing stone (40) to the circular blade (13) of the slice-cutting machine (10', 10") is designed as a wheel (35) of the frame (36) of the grinding device (22), the wheel (35) being designed to move the grinding stone (39) and/or the honing stone (40) to the circular blade (13) during rotation so that they can be arranged on the circular blade (13), and/or to move them away from the circular blade (13).
14. Slice-cutting system (25) comprising a slice-cutting machine (10', 10") having a machine housing (12) which holds a drive motor and a rotating circular blade (13) driven by the drive motor, wherein a cutting edge (14) of the circular blade (13) is covered in a first portion by a blade protection ring (15), wherein the slice-cutting machine (10', 10") comprises a stop plate (16) and a carriage (17) arranged so as to be displaceable, via which carriage the cutting material is supplied to the circular blade (13), wherein the stop plate (16) can be moved in the direction of the axis of rotation (RA) of the circular blade (13), and wherein the slice-cutting system (25) has a grinding device (22) according to any of the preceding claims for grinding the circular blade (13).
15. Slice-cutting system according to claim 14, characterized in that the deepening (50a, 50b) is formed on a rear face (51) of the stop plate (16) which faces away from the carriage (17) of the slice-cutting machine (10', 10") in the direction of the axis of rotation (RA) of the circular blade (13).

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