DE19756694A1 - Cutting device performs helical movements while cutting - Google Patents

Abstract

The cylindrical shaped food item (ham, cucumber, cheese, salami etc.) (2) is placed on to of two parallel positioned movable round bars (3) and can be rotated around its own longitudinal axis (4). The cutting disc (1) has its centre (5) half way between the rolls (3), it cannot be axially moved. The disc (1) rotates while the material (2) to be cut is pushed against it (1) either by its (2) own weight or by a specific mechanism. Because of a certain angle of inclination between the disc (1) and the longitudinal axis (4) the disc (1) performs a helical movement along the item (2). The slices are still attached to each other after the cutting process along one side and can stay like this and be arranged for decoration or cut with a single cut to be divided.

Description

The invention relates to a method for producing a by cutting such prepared product that the product by a simple measure, e.g. B. a separation can be cut into a large number of individual slices.

The separation of products into individual product slices is including foods such as sausage, ham, cheese, Vegetables and the like are common. In addition to slicing Hand are used to separate these products into individual pieces ben cutting devices used that from a specified driven, flat-disc-shaped circular knife that on a Circular orbit, and a device for product feeding tion exist. A cutting device of this type is known from DE 34 27 116 A1, among others. At suchi It is a cutting device after each cut required to remove the circular knife from the material to be cut NEN, this by the thickness of the slice to be cut and if necessary after retracting the measurement the next separating cut in its starting position perform. This procedure leads to unequal moderate movements, what for the construction effort and Energy requirement of the cutting device is disadvantageous. In addition, a dead travel of the circular knife is usually required derlich, which is inconvenient on the time required per cut  affects. Furthermore, the known cutting need directions special facilities to an orderly Able to ensure against the severed disks.

The invention has for its object a method for Manufacture a separable or separate product to indicate the non-uniform movement Avoidance processes and no significant dead times having.

This object is achieved by a method for Making one by cutting one piece Cut material into individual pieces using a cutting tool Disks separable product solved in which the cutting tool relative to the material to be cut along a screw surface che is moved, the screw axis essentially in the middle of the material to be cut, the cutting unit testimony for a material to be cut as a full body at least up to the screw axis or in the case of a hollow body present cutting material at least up to the hollow penetrates the material to be cut.

In contrast to the known cutting method does not cut the material to be cut immediately separated into individual slices, but it will through a single, through the material to be cut cut a helix in the form of a screw surface, which is easily done by one along the screw longitudinal axis half-cut in shi ben-shaped individual elements can be separated. That invented The inventive method has the advantage that the cutting gear to make the incision in a continuous Chen, uniform movement of cutting tool and / or cutting material expires, resulting in dead times and a greater energy expenditure he demanding acceleration and Delays are avoided. The cutting tool  is engaged and engaged throughout the cutting process essentially loaded with the same cutting force. In front especially with mechanical cutting tools, e.g. B. a circle knife, this has a gentle and corresponding effect prolonging the life of the cutting edge. The same shaped cutting process is also quiet and allowed a high cutting speed, which makes the cutting line stung can be increased significantly. The fiction Avoid moderate procedures, for example when cutting the one with a knife, tearing out the surface like it with the conventional separation of individual panes on the off side of the knife can occur, since the inventor method according to the knife throughout Cutting process remains engaged and the cutting angle on the point of entry of the cutting edge into the material to be cut can be chosen to have a clean cutting edge results.

It is especially useful for cutting food Advantage that the material to be cut according to the invention Cutting process coherent and in an orderly form remains. The organization of individual slices according to the cut ent falls, so that a special device for recording and orderly storage of the discs is not necessary. The coherent shape of the material to be cut enables this also special applications, for example decorative Presenting a suitably cut life tels.

An advantageous embodiment of the Ver driving provides that the cutting tool is stationary is arranged and the material to be sliced is constant around the screw axis rotated and at the same time steady along the screw axis is moved. Another advantageous embodiment of the The method can provide that the cutting tool in Rich tion of the screw axis is constantly shifted while  at the same time the material to be sliced continuously around the screw axis is turned on the spot. As a cutting tool, ins special for cutting food, a rotating driven circular knife can be used, the Axis of rotation to that through the center of the circular knife and the screw axis is inclined certain plane. Through the The size of the angle of inclination becomes the pitch of the screws area and thus the thickness of the slices to be extracted certainly. The axis of rotation of the circular knife can also in addition to a plane inclined to that through the center of the circular knife and the screw axis certain plane perpendicular and parallel to the screw axis is. Such an additional inclination of the circular knife is for cutting and feeding the material to be cut advantageous by the cutting knife. To set the Slice thickness and to adapt the cutting process to the physical properties of the material to be cut it is appropriate moderate if the inclination of the circular knife to the two before mentioned levels is adjustable.

The rotation and axial displacement of the material to be cut can in the method according to the invention exclusively by the rotating driven circular knife can be effected. For this It should be provided that the material to be cut is easily rotatable and axial is slidably mounted. In order to be displaceable in Can continue to facilitate the direction of the screw axis the screw axis is arranged so obliquely to the horizontal net be that the weight of the slidably mounted Material to be cut or the slidably mounted cutting unit the feed movement is generated or supported.

If the cutting tool is not suitable for the one act on the material to be cut and the required rotation Generate shift, so after another before Strike the invention provided a mechanical drive be the in the material to be cut and / or the cutting tool  moves the necessary way. Such a drive is For example, necessary if the cutting tool Cutting axis intersecting at right angles or a appropriately arranged cutting beam, for example a High pressure water jet or a laser beam is used since such cutting tools have no torque and no axial driving force can be transferred to the material to be cut. Cutting with a cutting wire or a cutting beam differs from the other cutting process using a circular knife in that two um Incisions turned 180 ° against each other in the form of a Screw surface arise, so that the number of revolutions is half the length for a certain cutting length with a circular knife. To when using a cutting wire cutting the cutting force can be provided be that the cutting wire is continuous in the longitudinal direction or swinging back and forth. The cutting wire can be made of metal, plastic or another for cutting the appropriate material.

The incision cut along a screw surface well can then according to the invention by a Longitudinal direction from the surface of the material to be cut A extending radially inwards to the screw axis cut into individual slices. The on this Disks produced in this way differ from here and there Conventionally cut slices essentially only through the radial one reaching to the center of the pane Incision. This is for many applications of the invention according to the method, for example for cutting Food is not a disadvantage, but offers this Consumers additional options for decoration.

The method according to the invention also offers also the possibility along a screw surface cut and not yet separated into individual slices  To manufacture products, such as food, that then later by the consumer through a radial on cut into individual slices as required can. Such a product, for example one after the method according to the invention along a screw surface cut sausage, can be cut after enclosed in a closed shell and so the consumer Tobe offered. The consumer then separates the envelope through a radial cut to the middle of the sausage not only can he easily remove the cover because he receives a separation of the sausage at the same time into individual slices. For example in a lifetime medium the radial incision to separate the individual To be able to carry out panes in a particularly simple manner NEN, according to a further proposal of the invention in the material to be cut along the screw axis the cutting fully penetrating thread is drawn in, the one with one of its protruding parts Ends against the material to be cut. Will on the other end of the thread radially outward and towards of the fixed thread end, so the turns the helix is cut one after the other and individual disks educated.

The invention is illustrated below with the aid of an embodiment game explained in more detail, which is shown in the drawing is. Show it

Fig. 1 is a perspective view of an application of the method using a Kreismes sers,

Fig. 2 is a view in the axial direction of the circular knife of the cut and the application according to Fig. 1 at the beginning of the cutting operation,

Fig. 3 is a perspective view of the implementation of a singling cut according to the Invention method using a circular knife

Fig. 4 is a perspective view of the implementation of a singling cut according to the Invention method using a thread and

Fig. 5 is a schematic representation of an application of the method using a cutting wire.

In the application example of the method according to the invention shown in FIGS. 1 and 2, a cutting material 2 in the form of a full cylinder, for example a sausage, is cut in with the aid of a rotary driven circular knife 1 . The material to be cut 2 rests on two par allelic, cylindrical and freely rotatable rollers 3 and is thereby rotatable about its cylinder axis 4 . The circular knife 1 has a larger diameter than the material to be cut 2 . Its center 5 lies in the center plane 6 between the two rollers 3 at a distance from the cylinder axis 4 that the circular cutting edge 8 of the circular knife 1 crosses the cylinder axis 4 . In the axial direction Rich the circular knife 1 is immovable. The axis of rotation 7 of the circular knife 1 is inclined to the center plane 6 at an angle β and to a plane perpendicular to the center plane 6 and parallel to the cylinder axis 4 at an angle α.

If the circular knife 1 is driven in the direction of rotation 9 and at the same time the material to be cut 2 is pressed in the direction of arrow 10 by its own weight or an external force against the side surface of the circular knife 1 , the frictional engagement between the contact surfaces of the circular knife shown in FIG 1 and the material to be cut 2 on the material to be cut 2 carry a torque through which the material to be cut 2 is rotated in the direction of rotation 9 in the opposite direction of rotation 11 . Here, the circular knife 1 continuously cuts into the material to be cut 2 , the course of the cut along a screw surface being determined by the inclination of its axis of rotation 7 in accordance with the angles α and β. The size of the angles α and β depends on the axial distance between the individual gears of the screw-shaped incision 12 generated. The required feed movement of the material to be cut in the direction of arrow 10 during the cutting can be made possible either by moving the material to be cut 2 on the rollers 3 or by an axial movement of the rollers 3 . The resistance to movement to be overcome here can be generated by the pressure which the circular knife 1 exerts with its side surface in the axial direction on the part of the material 2 to be cut, if the strength of the material to be cut 2 is sufficiently high. In addition, by means of an inclined arrangement of the rollers 3 relative to the horizontal, the weight of the material to be cut 2 can be used to support or generate the feed force. Of course, it is also possible to use additional means such as weights, mechanical, hydraulic or pneumatic force accumulators or feed drives to generate the feed movement. Likewise, the rotation of the material to be cut 2 can be generated by a separate drive and independently of the frictional torque of the circular knife 1 if, for example, the required frictional torque is not achieved due to the nature of the material to be cut 2 or a certain cutting speed is to be maintained.

Fig. 3 shows the separation of the provided with a continuous slot 12 in the form of a helical surface 2 be cut into individual disks 13. For this purpose, a continuous cut is made along the cylinder axis 4 with a circular knife 14 which penetrates radially up to the cylinder axis 4 into the material to be cut 2 . With such a cut, the windings lying one on top of the other generated by the incision 12 are separated from one another and individual disks 13 are produced, each of which has a radial cut 15 extending to the center of the disk. In this separation process, the disks 13 can be held in the present cylindrical arrangement by holding devices, so that even after the disassembly, an orderly packing of the disks is possible with little effort.

In the application example shown in FIG. 4, the material to be cut 2 is provided with a covering 20 for keeping fresh after cutting along a screw surface. To carry out the separating cut along the Zylin derachse a thread 16 is pulled through the material to be cut 2 . One end of the thread 16 is held on the rear end 17 of the material to be cut 2, for example with the aid of a plate resting on the end face of the material to be cut 2 . The other end 18 of the thread 16 initially protrudes from the front end 19 of the material 2 to be cut. When the end 18 of the thread 16 as shown in Fig. 6, pulled radially of the cut 2 to the outside and towards the rear end 17, the thread 16 leads in a manner analogous to the circular blade 14 has a sheath 20 auftren nenden and the material to be cut 2 into individual slices separate the longitudinal section. This version is particularly suitable for separating the slices at the end user, since they do not need any tools to separate the individual slices, but rather are supplied with them in the form of thread 16 . The Endverbrau cher has the option of using the thread to cut the separator only as far as he wants to cut off slices, so that the remaining remnant is preserved as Gan zes and can be kept fresh better.

Fig. 5 shows an embodiment of the inventive method, in which a cutting wire 21 is used for cutting. This in turn in the form of a cylindrical piece of cutting material 2 is rotatably mounted between three spaced-apart rollers 22 . The rollers 22 are driven synchronously with each other and are arranged somewhat obliquely to the cylindrical surface in the same sense, so that the material to be cut 2 is rotated and simultaneously displaced in the axial direction. The cutting wire 21 is endless and around four Füh approximately 23 , 24 tension. The upper guide rollers 23 guide the strand of the cutting wire 21 extending between them in such a way that it crosses the cylinder axis of the material to be cut 2 at a right angle. The leadership roles 24 are driven and ensure a continuous union of the cutting wire 21 in one of the indicated directions. When the cutting material 2 is moved by the rollers 22 with rotating cutting wire 21, the cutting wire 21 generates two opposite cuts 25, 26, the two of the same form by 180 ° from each other twisted coil surfaces. By a along the central axis radial cut, the cut material 2 can be zertei len in individual slices.

The procedure described is based on the selection of the appropriate one Cutting tool for all cutable materials, in particular their foodstuffs, natural substances, plastics and metals, applicable. If a circular knife is used as a cutting tool turns, the material to be sliced may not be too hard in the core zone of the material to be cut.

Claims (17)

1. Method of making a by incision a one-piece material to be cut by means of a cutting product separable into individual slices, in which the cutting tool ent relative to the material to be cut long a screw surface is moved, the screw benachse essentially in the middle of the material to be cut runs, the cutting tool in one as a full body present cutting material at least until Screw axis or in the case of a hollow body the material to be cut at least up to the cavity in the Cutting material penetrates. 2. The method according to claim 1, characterized in that the cutting tool is arranged stationary and the material to be cut ( 2 ) about the screw axis ( 4 ) is rotated continuously and at the same time is continuously shifted along the screw axis ( 4 ). 3. The method according to claim 1, characterized in that the cutting tool in the direction of the screw axis is shifted while cutting well rotated around the screw axis on the spot becomes. 4. The method according to any one of the preceding claims, characterized in that a rotary driven circular knife ( 1 ) is used as the cutting tool, the axis of rotation of which to the plane defined by the center point of the circular knife ( 1 ) and the screw axis ( 4 ) at an angle (β ) is inclined. 5. The method according to any one of the preceding claims, characterized in that the axis of rotation of the circular knife ser ( 1 ) is inclined in addition to a plane at an angle (α) which to the through the center of the circular knife ( 1 ) and the screw axis ( 4th ) certain plane is perpendicular and parallel to the screw axis ( 4 ). 6. The method according to any one of claims 4 or 5, characterized in that the inclination of the circular knife ( 1 ) to the plane is adjustable. 7. The method according to any one of the preceding claims, characterized in that the material to be cut ( 2 ) is rotatably mounted and is rotated by the movement of the circular knife ( 1 ). 8. The method according to any one of the preceding claims, characterized in that the displacement of the material to be cut ( 2 ) along the screw axis ( 4 ) is effected by the circular knife ( 1 ). 9. The method according to any one of the preceding claims, characterized in that the screw axis is arranged obliquely (4) to a horizontal such that the axial displacement of the cut (2) is effected by the weight of the cut material (2) or supports. 10. The method according to any one of the preceding claims, characterized in that the screws axis perpendicular crossing the cutting wire (21) is used as a cutting tool. 11. The method according to any one of the preceding claims, characterized in that the cutting wire ( 21 ) is moved continuously or back and forth in the longitudinal direction. 12. The method according to any one of the preceding claims, characterized in that as a cutting tool Cutting axis crossing the screw axis at right angles, for example a high pressure water jet or a Laser beam is used. 13. The method according to any one of the preceding claims, characterized in that the cut along the screw surface cut material ( 2 ) by a in the longitudinal direction from the surface of the material to be cut ( 2 ) radially inward to the screw axis ( 4 ) extending incision ( 15 ) is separated into individual disks ( 13 ). 14. The method according to any one of the preceding claims, characterized in that in the material to be cut ( 2 ) ent along the screw axis ( 4 ), the material to be cut ( 2 ) completely penetrating thread ( 16 ) is drawn, which with one of the material to be cut ( 2nd ) protruding ends against the material to be cut ( 2 ) is fixed. 15. The method according to any one of the preceding claims, characterized in that the cut material to be cut along the screw surface ( 2 ) is surrounded with a sleeve ( 20 ). 16. The method according to any one of claims 14 and 15, characterized in that the sheath ( 20 ) is such that it can be severed with the thread ( 16 ). 17. Device for performing the method according to a of the preceding claims, characterized by a Recording for the material to be cut, which is a rotation of the Cuttings around an axis and a simultaneous Ver shift of the material to be cut along the axis relative to allows a cutting tool and a cutting tool that is available in a full body Cuttings at least up to the screw axis or at a cutting material present as a hollow body at least penetrates into the material to be cut up to the cavity.