EP3007855A2

EP3007855A2 - Method for producing a cutting blade

Info

Publication number: EP3007855A2
Application number: EP14736688.4A
Authority: EP
Inventors: Günther Weber
Original assignee: Weber Maschinenbau GmbH Breidenbach
Current assignee: Weber Maschinenbau GmbH Breidenbach
Priority date: 2013-08-28
Filing date: 2014-06-27
Publication date: 2016-04-20
Also published as: WO2015028171A3; US20160207152A1; WO2015028171A2; DE102013217138A1

Abstract

The invention relates to a method for producing a cutting blade for a device for cutting food products, especially a high-performance slicer, where a single-piece blank presenting a basic structure of the cutting blade is produced, and the blank is machined and then separated into at least two segments.

Description

Method for producing a cutting knife

The invention relates to methods for producing a cutting blade and a cutting blade for a device for slicing food products, such as sausage, ham, cheese or the like. The slicing device may in particular be a high-performance slicer. The cutting blade may e.g. be a circular or sickle knife.

First, a one-piece blank is produced, which has a basic structure of the cutting blade. This blank is then processed.

Such production methods are known in principle. However, the cutting blades produced in this case have disadvantages in handling, as they are e.g. have a relatively large weight. This can be disadvantageous, in particular in the case of a knife change. The balancing must always be done for the entire cutting blade. The production of easily manageable cutting blades, however, is associated with high costs, also because the required very high accuracies can only be achieved with appropriate rigidity.

It is an object of the invention to provide a simple and inexpensive method for producing easily manageable cutting blades or easily manageable cutting blades. The object is achieved by methods and apparatus each having the features of the independent claims.

According to the invention, a, in particular targeted, separation of the machined blank takes place in at least two segments.

The cutting blade is thus divided in particular into separately manageable parts. After production, therefore, preferably no one-piece cutting blade is available.

A multi-segmented cutting blade leads, for example, that the handling is improved and made easier. Thus, the cutting blade does not have to be transported as a whole, which is advantageous, for example, when replacing the cutting blade. In particular, the entire weight of the cutting blade does not have to be moved all at once because, due to the separation, a separate transport and / or a separate adjustment in the associated receptacle of the segments is made possible.

By separating the blank, it is also possible to change only individual segments. Segments having higher wear than other segments may be e.g. be changed frequently. Longer lasting segments, however, can remain longer on the slicer.

In particular, the balance for the individual segments can each be done separately. Alternatively, a common balancing of the individual segments is possible, in particular if the pairing of the segments is to be maintained.

Preferably, at least one segment may have a counterweight. Due to the reduced transportable weight of the individual segments the counterweight may also remain on the segment when the segment is replaced.

In the case of one-piece cutting blades, the remaining of the counterweight is only possible to a limited extent, if at all, owing to the high weight of the cutting blade. So first, the counterweight must be removed before the

Cutting knife can be removed from the blade holder.

The counterweight can in particular be firmly connected to the respective segment. This leads e.g. to avoid a likelihood of confusion, since the counterweight is clearly assigned to a segment.

In particular, a releasable counterweight can be arranged completely on a corresponding segment or else project beyond the segment into the region of an adjacent, associated segment.

Due to the separate segments, the knife can be fastened in particular to a knife holder in a novel manner. Thus, for example, a central clamping is possible, so that the segments are inserted or inserted in particular from the side, fixed to the blade holder and then clamped with a clamping device acting in the axial direction.

According to the invention, the blank is processed before it is separated. This has the advantage that conventional processing devices, for example

Grinding devices, can be used. In fact, during the entire machining process, it does not matter that the end product is a segmented cutting blade, as the separation takes place after machining. By using conventional processing devices thus the cost of manufacturing easily manageable, in particular segmented, cutting blades are reduced. The fact that the blank is processed as a whole, the separated segments are optimally matched. The blank is thus in particular as long as possible left in one piece and only divided at the end of the manufacturing process. The separation can basically take place in any number of segments. In particular, a separation can take place in two, three, four, five or more segments.

In particular, any segment of the machined blank that is arbitrarily shaped can be regarded as the segment, which is separated from the remaining blank, wherein all segments together form the cutting blade. The segments of a cutting blade may in particular have the same shape.

Further developments of the invention can also be found in the dependent claims, the description and the attached drawings.

According to one embodiment, the basic structure of the cutting blade corresponds to a sickle blade with exactly one spiral. The spiral can also be referred to as sickle or wing in particular.

Thus, for example, a conventional sickle knife with a single spiral can be divided into two segments. It is also possible to divide a circular knife, which by definition has no spiral, into several segments. In this case, the segments may preferably be of identical construction. In a circular knife with two segments, each segment may thus be formed, for example semicircular.

In an alternative embodiment, the basic structure of the cutting blade corresponds to a sickle blade with at least two spirals. Such knives are also referred to as multi-blade knives or multi-spiral knives. Preferably, the segments can be constructed identical. For example, with a two segment knife, each of the segments may constitute exactly one half of the cutting blade. The weight is therefore halved during transport, in particular, since the segments can be moved individually. In a further development, the separation takes place in such a way that each segment has exactly one spiral. In particular, the number of segments corresponds to the number of spirals.

If, for example, one of the spirals shows signs of wear, then the corresponding segment can be removed and, for example, reground.

According to a further embodiment, the production of the blank comprises a cutting, a punching, a milling and / or a casting method. The blank is in particular cut out of a material carrier. This is possible, for example, by means of a laser, sand and / or water jet or by means of a mechanical separation process. In particular, when using a laser precise cuts can be performed. The waste can therefore be kept low in particular. The cutting device can be moved in particular computer-controlled over the material carrier. Preferably, a desired knife shape can be cut out by means of a controller. The knife shape can in this case correspond in particular to the shape of a circular or sickle blade. The sickle knives may have one or more spirals.

In particular, the geometry of the future cutting blade can thus be completed before the separation into individual segments takes place. According to a further embodiment, the machining comprises a keying of the cutting blade, in particular for increasing the rigidity. Here, the cutting blade is machined so that this has a bowl-shaped or bowl-shaped in the broadest sense. In particular, on its side facing a product to be sliced during the cutting operation, the knife body is set back relative to the cutting plane defined by the cutting edge of the knife. This ensures that compressions of the product to be sliced are largely avoided. This one-sided bowl or bowl shape of the knife thus does not affect the product itself practically during the cutting operation. The cutting blade only has to dodge the product slab just separated, which is unproblematic due to their ease of deformability.

According to a further embodiment, the machining comprises a grinding of at least one cutting edge of the cutting blade. Preferably, each segment has exactly one cutting edge, e.g. runs along the associated spiral.

Preferably, therefore, the entire cutting edge or all cutting the

Cutting knife first completely ground before a separation into individual segments takes place. In this way, conventional grinding devices can also be used, which in particular reduces the production costs. According to a further embodiment, the processing may include a coating, in particular a painting, of the cutting blade. According to a further embodiment, the machining comprises an introduction, preferably a drilling, punching or laser, at least one recess, in particular for fastening, centering and / or positioning of the cutting blade on the slicing device or a processing device, in particular a grinding device.

In particular, first recesses are introduced into the cutting blade before the cutting blade is ground.

Preferably, a plurality of recesses are provided. The recesses can be round, in particular as a hole. Preferably, each segment has at least one recess. More preferably, a plurality of recesses are provided per segment. The recesses can also serve to attach one or more counterweights. Furthermore, the recesses may be used to attach to a knife guard, i. a device for transporting and / or storing the cutting blade to be mounted. The recesses can also serve for centering and / or unambiguous positioning of the cutting blade. In this way, the cutting blade can be in an exact position, e.g. be mounted on a slicing device and / or a processing device, in particular a grinding device.

Thus, all fastening bores and / or centerings are introduced in particular first, before the cutting blade is divided into segments. According to a further embodiment, the separation comprises at least one separating cut, in particular by means of a laser, sand and / or water jet or by means of a mechanical separation process. It is also conceivable to realize the separation, for example, by a breakup. In this case, in particular, a predetermined breaking point can be provided.

Preferably, a machined blank can be laser cut into segments. In this way a precise separation is made possible. In a development, the separating cut runs at least in sections along a straight line. In particular, the severance cut can be made centrally, for example when the cutting blade is divided into two identical segments, e.g. each with a spiral, is divided. Preferably, the separating cut comprises a straight cut, since this is particularly easy to implement. However, the separating cut can in principle also have curves, angles or any other line guides, whereby preferably a positioning or assignment of the segments and a mass balance can be ensured.

According to a further embodiment, the separation takes place after the complete processing of the blank. Consequently, in particular, all processing steps, in particular grinding, are completed before the blank is separated into the individual segments. In particular, thus, the cutting blade is completely completed before it is shared.

In principle, however, it is also possible for individual processing steps to be carried out after the separating cut, for example processing of an edge created by the separating cut. In particular, the cutting blade may first be produced according to a conventional manufacturing method. The processing can be done in a conventional manner. Novel processing machines are therefore not required. The cutting knife only has to be separated into segments at the end.

In this way, easily manageable cutting blades comprising a plurality of segments can be manufactured in a simple and cost-effective manner. The invention also relates to a method for producing a cutting knife comprising at least two segments for a device for slicing food products, for example sausage, ham, cheese or the like. The slicing device may, in particular, be a high-performance slicer. The cutting blade may e.g. a circular or sickle knife with one or more spirals.

According to the invention, individual segments are produced separately from a common material carrier, wherein preferably at least one segment has a spiral.

The cutting knife may in particular be a multi-blade knife or multi-spiral knife. Preferably, each segment may have exactly one spiral. However, it is also possible that the cutting blade is designed as a sickle knife with only a single spiral. In this case, only one segment contains the spiral.

The segments are clamped on a, preferably common, jig, wherein the segments in particular spanned plane to each other become. The segments can be mounted on the jig, for example by means of a screw, latching and / or clamping device. For example, a central clamping is possible in which the segments are clamped laterally and fixed to the jig.

The jig serves at least predominantly the support of the segments during processing.

Subsequently, the segments are machined on the jig. The processing of the segments may preferably be common, i. while the segments are clamped together done. In particular, the segments may be processed simultaneously, e.g. dished and / or polished. Through this uniform processing, the individual segments can be ideally matched.

Alternatively, however, it is also possible to process the individual segments separately, in particular successively or spaced from one another.

When grinding conventional sickle blades, for example, there is the disadvantage that not the entire peripheral area can be ground. For example, in the vicinity of an edge of the spiral, which does not serve as a cutting area, a so-called outlet area is provided, which can not be reached by a grinding device. Such a discharge area can be omitted in a separate processing of the segments, since the segments can be ground independently. Thus, cutting ranges of 360 ° are possible. Depending on the geometry of the segments, the cutting area can also be greater than 360 °. In particular, a cutting edge can run along one or each spiral. An independent grinding of the individual segments also has the advantage that the individual segments with different cutting parameters, in particular different cutting angles, can be ground.

The cutting angle is the angle which a plane surface located on the radially outer circumference of the cutting blade, which is also referred to below as a cutting surface, and whose radially outer end is formed by the cutting edge, with the cutting plane running perpendicular to the axis of rotation of the knife includes. The size of the cutting angle, ie the steepness of the cutting surface, determines on the one hand the influence on the product to be sliced and, on the other hand, the manner of depositing the respectively separated product slice by the cutting knife. In practice, the size of the cutting edge angle is selected as a function of the product and application-specific conditions. A cutting edge which is constant along the cutting edge always represents a compromise with respect to the products to be sliced. A cutting angle which is too large, ie an edge surface that is too steep, should be avoided as much as possible, as this exerts excessive pressure on the product and the product could therefore be exposed to unacceptable compression. In contrast, a small cutting angle, ie a relatively flat cutting surface, results in gentle, gentle cuts that do not unnecessarily compress the product. However, can not be achieved with such a flat set cutting blade in most cases desired storage behavior with respect to each separated product slices. In particular, if the cutting blade is set too flat, the product slices can not be "wedged" in the desired manner. Depending on the area in which the cutting blade enters the product, the cutting angle of a segment can be selected larger or smaller. Thus, in the case of a segment with which the cutting blade enters the product, the cutting angle is preferably chosen to be smaller than in the region of the projecting spiral. There, the cutting angle can be chosen to be larger, in particular, in order to enable better storage of the separated product slices.

The individual segments can each have constant cutting angles. Alternatively, variable, in particular steadily increasing or decreasing, cutting angle of the individual segments are possible.

If the individual segments are generated separately from a common material carrier, the individual segments can each be arbitrarily oriented on the material carrier. Thus, for example, the available material can be optimally utilized. This can in particular lead to cost savings in the production of cutting blades with multiple segments.

According to one embodiment, the generation of the segments comprises a cutting, in particular a lasering, a punching and / or a milling. Also a cutting by means of a sand or water jet is possible.

The individual segments can thus be cut out in particular exactly from a material carrier. Preferably, the generation of the segments, in particular by arranging the segments on the material carrier, optimized such that a waste of the material carrier is kept low. In particular, a control can be provided for this purpose. Preferably, a, for example, optical detection means may be provided which detects the dimension of the material carrier. By means of a computing unit, the position of the individual segments can then be calculated, for example, in which the total waste of the material carrier is minimized. In particular, based on the calculations, the segments can then be cut out.

The available material carrier is thus utilized to the best extent possible. Reduced waste can significantly reduce material costs.

According to a further embodiment, the production is performed such that the segments have opposite orientations on the material carrier. The particular substantially D-shaped segments can thus be alternately rotated against each other cut out of the material carrier. The individual segments can in particular be positioned such that the cutting regions at least partially adjoin one another. The particular straight, not available for cutting edges of the segments may preferably be oriented parallel to each other. In the production of the individual segments thus creates a relatively small remainder.

According to a further embodiment, the machining comprises a wringing of the cutting blade, a grinding of at least one cutting edge of the cutting blade and / or an introduction, preferably a drilling, punching or lasering, at least one recess, in particular for fastening the cutting blade to the cutting device. Preferably, a plurality of recesses may be provided. In particular, each segment may have at least one recess. The recesses may in particular be round, for example as a hole, and serve, for example, for fastening the cutting blade to a blade shaft. Alternatively or additionally, recesses for attachment of counterweights and / or knife protection are possible.

The coding and / or the grinding of the individual segments may preferably be carried out simultaneously and / or jointly, i. while the segments are clamped together, done to fit the segments in particular plan to each other.

The processing may further include coating, in particular painting, of the segments.

The invention also relates to a method for producing a cutting knife comprising at least two segments for a device for slicing food products, in particular a high-performance slicer, wherein the individual segments are produced from different material carriers. Preferably, at least one segment has a spiral. The material carriers are thus formed differently. This makes it possible to produce segments with different properties, in particular different cutting properties.

According to a further development, the different material carriers differ from one another with regard to the material and / or the material thickness.

In particular, the segments may be made of different material carriers consisting of different material compositions. The materials may in particular be metals, plastics, ceramics or corresponding mixtures. The different materials thus allow different cutting parameters or wear parameters. The materials can be chosen in particular depending on the respective cutting phase.

In particular, the segments can be made of material carriers with different material thicknesses. The segments may preferably be different in thickness. As a result, balancing of the

Cutting knife to be supported.

The invention also relates to a cutting blade for a device for slicing food products, in particular a high-performance slicer, having at least two segments, wherein the segments are different with regard to the material and / or the material thickness.

A segmented cutting blade is easy to handle, since in particular the segments can be transported individually, assembled and / or disassembled.

All embodiments of the device described here, as well as all embodiments of the methods described here, can be combined with one another, if appropriate.

The invention will now be described by way of example with reference to the drawings. 1 shows a front view of a basic structure of a sickle knife, a front view of a basic structure of a circular knife, a front view of a first embodiment of a sickle blade produced by a method according to the invention, a front view of a first embodiment of a circular blade prepared by a method according to the invention, a front view of a second embodiment of a sickle blade produced by a method according to the invention, a front view of a third embodiment of a produced by a method according to the invention Sickle blade, a front view of a fourth embodiment of a sickle blade produced by means of a method according to the invention, a front view of a second embodiment of a circular blade produced by a method according to the invention, a plan view of distributed over a first material carrier segments, and

10 is a plan view of distributed over a second material carrier segments. 1 shows a blank 10, which has a basic structure 12, which corresponds to a sickle blade with a spiral 14.

The blank 10 also has an outlet 16.

According to the invention, the blank 10 is produced in one piece and lasered out of a material carrier, for example.

In Fig. 2, a blank 10 is shown. The basic structure 12 of the blank 10 corresponds in this case to a circular blade.

This blank 10 can also be produced in one piece from a material carrier, for example lasered. In FIG. 3, the blank 10 according to FIG. 1 has undergone various processing steps. For example, recesses 18 have been introduced into the blank 10.

The recesses 18 can serve, for example, for mounting and / or centering on a blade receptacle. Also, for example, a counterweight 20 may be attached to the recesses 18.

The blank 10 also has a cutting edge 22. After processing, the blank 10 can be separated into two segments 24, each with a cutting edge 22. The separation takes place by means of a separating cut along a straight line 25.

Alternatively, the segments 24 can already be produced separately during production. For grinding here no outlet 16 is more necessary. Thus, also cutting 22 can be produced, which have a greater circumferential length. In dashed lines, a cutting region of 360 ° is shown in FIG. Dotted is a cutting area of greater than 360 ° shown.

The shape of the spiral 14 is shown purely by way of example. In principle, any shapes of the spiral 14 are possible.

The cutting edge 22 of the segment 24 shown on the left can hereby have another, e.g. have a more acute cutting angle than the cutting edge 22 of the segment 24 shown on the right, which includes the spiral 14.

After grinding, the counterweight 20 can be mounted on a segment 24. In this case, the counterweight 20 projects beyond the segment 24 on which it is mounted in an exemplary embodiment variant.

Fig. 4 corresponds to the blank 10 of FIG. 2, which was divided into two segments 24 after processing. The processing can be carried out analogously to the method described in connection with FIG. 3.

In FIG. 5 and FIG. 6, respective sickle blades are shown, which comprise two segments 24. Each of the segments 24 in this case has a spiral 14.

The segments 24 according to FIG. 6 are in particular produced separately, since no outlet 16 is provided. A cutting range of 360 ° is made possible by a separate grinding of the segments 24.

In Fig. 7, a sickle blade with three segments 24 is shown. Each segment 24 in this case has a spiral 14. In Fig. 8 a circular blade with three segments 24 is shown. Here, first, a one-piece blank can be generated and edited. Subsequently, the separation can take place by means of three separating cuts along the lines 25 into three segments 24. Alternatively, the individual segments 24 can also be manufactured separately and then processed.

In Fig. 9, a material carrier 26 is shown. D-shaped segments 24 can be individually cut out of the material carrier 26 to save space. The D-shaped segments 24 are in this case oriented opposite to each other.

The optimal positions of the segments 24 can be determined by means of a detection device, not shown, as well as a computing unit. The segments 24 can then be cut out of the material carrier 26 and processed.

In Fig. 10, a further material carrier 26 is shown, from which two segments 24 can be cut, wherein the blend is minimized. The inventive method thus easily manageable cutting blades, which comprise a plurality of segments can be produced in a simple and cost-effective manner.

LIST OF REFERENCES

blank

basic structure

spiral

outlet

recess

counterweight

cutting edge

segment

line

material support

Claims

claims

1 . Method for producing a cutting knife for a device for slicing food products, in particular a high-performance slicer, comprising the steps:

Production of a one-piece, a basic structure (12) of

Cutting Blade (10),

Processing of the blank (10), and

Separation of the machined blank (10) in at least two segments (24).

2. The method according to claim 1,

characterized in that

the basic structure (12) of the cutting blade corresponds to a sickle blade with exactly one spiral (14).

3. The method according to claim 1,

characterized in that

the basic structure (12) of the cutting blade corresponds to a sickle blade with at least two spirals (14).

4. The method according to claim 3,

characterized in that

the separation is such that each segment (24) has exactly one spiral (14).

5. Method according to one of the preceding claims,

characterized in that

the production of the blank (10) comprises a cutting, in particular a laser, a punching, a milling and / or a casting process.

6. The method according to any one of the preceding claims,

characterized in that

the machining includes a bowl of the cutting blade.

7. The method according to any one of the preceding claims,

characterized in that

the machining comprises grinding at least one cutting edge (22) of the cutting blade.

8. The method according to any one of the preceding claims,

characterized in that

the machining comprises an introduction, preferably a drilling, punching or laser, at least one recess (18), in particular for fastening, centering and / or positioning, of the cutting blade on the slicing device.

9. The method according to any one of the preceding claims,

characterized in that

the separation comprises at least one separating cut, in particular by means of a laser, sand and / or water jet or by means of a mechanical separation process.

10. The method according to claim 9,

characterized in that

the separating cut extends at least in sections along a straight line (25).

1 1. Method according to one of the preceding claims,

characterized in that

the separation after the complete processing of the blank (10) takes place.

12. A method for producing a cutting knife comprising at least two segments (24) for a device for slicing food products, in particular a high-performance slicer, comprising the steps:

separate production of the individual segments (24) from a common material carrier (26), wherein preferably at least one segment (24) has a spiral (14),

Clamping the segments (24) on a, preferably common, jig, wherein the segments (24) are clamped in particular plane to one another,

Processing the segments (24) on the jig.

13. The method according to claim 12,

characterized in that

the production of the segments (24) comprises a cutting, in particular a laser, a punching and / or a milling.

14. The method according to claim 12 or 13,

characterized in that

the production is carried out such that the segments (24) have opposite orientations on the material carrier (26).

15. The method according to any one of claims 12 to 14,

characterized in that

the machining involves a wringing of the cutting blade, a grinding at least one cutting edge (22) of the cutting blade and / or an introduction, preferably drilling or lasering, at least one cutout (18), in particular for fastening, centering and / or positioning the cutting blade the slicing device.

16. A method for producing a cutting knife comprising at least two segments (24) for a device for slicing food products, in particular a high-performance slicer, the individual segments (24) being produced from different material carriers (26), preferably at least one segment ( 24) has a spiral (14).

17. The method according to claim 16,

characterized in that

the different material carriers (26) differ with regard to the material and / or the material thickness.

18. A cutting blade for a device for slicing food products, in particular a high-performance slicer, with at least two segments (24), wherein the segments (24) are different in terms of material and / or material thickness.