EP3001825B1 - Methode pour trouver la position de reference axiale d'un couteau rotatif - Google Patents

Methode pour trouver la position de reference axiale d'un couteau rotatif Download PDF

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Publication number
EP3001825B1
EP3001825B1 EP14756044.5A EP14756044A EP3001825B1 EP 3001825 B1 EP3001825 B1 EP 3001825B1 EP 14756044 A EP14756044 A EP 14756044A EP 3001825 B1 EP3001825 B1 EP 3001825B1
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EP
European Patent Office
Prior art keywords
cutting
cutting blade
blade
axial
head
Prior art date
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Application number
EP14756044.5A
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German (de)
English (en)
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EP3001825A1 (fr
Inventor
Volkan Yokaribas
Christoph Kuhmichel
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Weber Maschinenbau GmbH Breidenbach
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Weber Maschinenbau GmbH Breidenbach
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Publication of EP3001825A1 publication Critical patent/EP3001825A1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D7/2628—Means for adjusting the position of the cutting member
    • B26D7/2635—Means for adjusting the position of the cutting member for circular cutters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D2210/00—Machines or methods used for cutting special materials
    • B26D2210/02—Machines or methods used for cutting special materials for cutting food products, e.g. food slicers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting

Definitions

  • the invention relates to a method for determining an axial reference position of a cutting blade which moves rotationally and / or planetary circumferentially on a device for slicing food products, in particular on a high-performance slicer, wherein the cutting knife is attached to a knife head, by means of which the cutting knife is movable.
  • the invention relates to a method for positioning such a cutting blade with respect to a cutting edge of the slicing device, in particular for adjusting the cutting gap between the cutting blade and the cutting edge.
  • the invention relates to devices for slicing food products, especially high-performance slicers.
  • an axial reference position of the cutting blade is of great importance in practice, in particular when food products such as e.g. Sausage, ham or cheese by means of so-called slicers at high speed, i. several hundred to a few thousand slices per minute, and thereby cut open with high cutting quality.
  • a detection of an axial reference position of the knife in different operating states of a slicer is required, in particular at the start of the slicer, with a change of the cutting blade and / or the cutting edge, with a change in the rotational speed of the cutting blade, with a change in the cutting position of the Cutting knife and also during operation, in particular to be able to check the current size of each set cutting gap.
  • the publication DE 101 43 508 A1 discloses a method of cutting gap adjustment in which an actual distance between a cutting knife and a cutting edge is determined, and then, by an electrical adjustment device taking into account the actual distance, a desired Distance between the cutting blade and the cutting edge is adjusted.
  • the actual distance is determined either by sensors without contact or detected by a current increase in the electrical adjusting device, which occurs when touching the cutting blade and cutting edge.
  • the publication DE 10 2008 019 776 A1 discloses a method of cutting gap adjustment in which a vibration sensor is used to determine the distance between a cutting blade and a cutting edge. As the blade and cutting edge touch or almost touch, the vibrations sensed by the sensor change; From this, the distance between the cutting blade and the cutting edge can be determined.
  • the publication DE 10 2009 011 860 A1 discloses a method for cutting gap adjustment with a rotating knife, in which detects vibrations generated by the rotating blade and an adjusting device in dependence is controlled by the detected vibrations to adjust a cutting gap as accurately as possible.
  • the object of the invention is to provide a structurally simple and cost-effective way for accurate and reliable determination of the axial reference position and positioning a cutting blade of a slicer for food products, so that in particular the adjustment of the cutting gap between the cutting blade and a cutting edge of the slicer with the highest possible accuracy can be performed.
  • the solution of this object is achieved by a method having the features of claim 1.
  • the inventive method comprises the steps that the either non-rotating or rotating at a certain speed cutting blade and a cutting edge by means of an axial drive at least substantially axially relative to each other are driven towards each other in that during the axial movement the cutter head is monitored, and that a change of a condition of the cutter head exceeding a specifiable extent is judged as a contact of the cutting edge by the cutting knife and as reaching the reference position.
  • the cutter head comprises at least one bearing for the cutting blade, wherein during monitoring a possible movement due to the bearing clearance or the bearing clearance of the bearing is detected.
  • this also means the cutter itself, i. if e.g. is a monitoring of the cutter head or a movement of the cutter head or at least a portion or range of the cutter head is mentioned, then this is also a monitoring or movement of the cutting blade or a portion or portion of the cutting blade to understand.
  • a change of a state of the cutter head also means a state change of the cutter itself, for example a deformation of the cutter blade.
  • the invention is based on the recognition that the contact between the cutting blade and the cutting edge, so to speak, the "collision" of the cutting blade and cutting edge at the end of the axial travel, impact on the knife blade carrying the cutting blade, ie in general effects on a holder or storage of the cutting blade, or on the cutting blade itself, and indeed those effects that are reproducible and can be clearly detected, for example by means of suitable sensors.
  • the invention means a clear departure from methods known from the prior art in which e.g. either the size of the cutting gap itself measured or a contact between the cutting blade and the cutting edge is detected involving the cutting edge, for example by means of the above-mentioned, integrated in the cutting edge vibration sensor.
  • the influence of the contact of the cutting edge is detected by the cutting blade on the central support or storage, which represents the cutter head, or on the cutting blade itself, which in a simple and cost-effective manner regardless of the cutting edge itself or by influences on the cutting edge can be done.
  • a movement of at least a part or a region of the cutter head and / or the cutting blade is detected and evaluated with respect to a deviation from a starting position.
  • the determination of the axial reference position of the cutting blade can be reduced to a comparatively simple, reliable and inexpensive feasible displacement or distance measurement, this measurement advantageously at a basically arbitrary, the respective structural conditions taking into account the blade head or on the cutting blade can be carried out.
  • the movement to be detected according to the invention is in particular an offset, a change in position, a deflection, a bending, a deformation and / or a curvature of at least a part or region of the cutter head and / or the cutting blade.
  • the detection of the movement can be done directly by a corresponding distance measurement, which will be discussed in more detail below, or for example by an indirect method, e.g. by pressure sensors integrated into the cutter head, e.g. Measure pressure changes in the rolling or sliding bearings of a cutter blade supporting rotor of the cutter head, which are caused by a misalignment or a change in position of the rotor when the blade supported by the rotor touches the cutting edge at the end of the axial movement.
  • a radial component or an axial component of the movement of the cutter head or a part or area of the cutter head and / or of the Cutting knife to be detected.
  • a fixed point is preferably provided on a cutting head housing of the slicing device.
  • the invention is based on the recognition that a bearing clearance present in bearings of the cutter head, which is also referred to as bearing clearance, has the consequence that the cutter head or a part or an area of the cutter head is moved when the cutter blade and the cutting edge at the end the axial travel against each other. According to the invention, a possible movement due to the bearing air or the bearing clearance of the bearing is consequently detected during the monitoring of the cutter head.
  • the bearing is in particular a rotary bearing for a rotation of the cutting blade, preferably a rolling bearing, or a thrust bearing for a
  • Axial movement of the cutting blade preferably a plain bearing.
  • the game in the storage of the cutting blade is thus exploited here to detect the contact between the cutting blade and the cutting edge.
  • An advantage of this procedure is that the determination of the reference position of the cutting blade such a movement of the cutter head or a portion or an area of the cutter head and / or the cutting blade is used, which takes place anyway, when the cutting blade and the cutting edge abut against each other.
  • the cutter head is preferably a blank cutter head which, with the cutter blade rotating and / or rotating, permits an axial movement of the cutter blade for carrying out blank cuts.
  • the cutter head comprises a rotor which carries the cutting blade at a free end and is rotatable about a central axis of rotation by means of a rotary drive of the slicing device, during which monitoring a movement of the rotor relative to a fixed point, in particular on a cutting head housing, is detected ,
  • the use of the rotor or its lateral surface as reference surface for a movement caused by the contact of the cutting edge by the cutting blade has the advantage that the measurement is particularly simple, if - as is often the case in practice - the outer surface of the rotor for a suitably designed sensors, such as a distance sensor, is accessible.
  • the monitoring can be done in an axial region between the cutting blade and a wall of a cutting head housing.
  • the monitoring can also take place at a different axial position, for example even within a cutting head housing.
  • At least one position sensor in particular a distance sensor, is used during the monitoring.
  • the position sensor can be measured with respect to a fixed point, in particular on a cutting head housing, for example, either a radial or an axial distance to a component or assembly of the cutter head, which moves relative to the fixed point when the cutting blade and the cutting edge come into contact.
  • the distance from a fixed point, in particular to a cutting head housing, to a component or assembly of the cutter head rotating in the slicing operation is preferably measured as the reference surface, in particular to one by means of a rotary drive of the slicing apparatus rotatable rotor.
  • the outer surface of the rotor is used as a reference surface for this purpose.
  • the object is also achieved by a method having the features of claim 8, wherein for positioning the cutting blade with respect to a cutting edge first by the inventive method, an axial reference position of the cutting blade is determined, in which the cutting blade touches the cutting edge, and starting from the Reference position, the cutting blade is moved to a spaced from the cutting edge working position and / or the cutting edge is moved to a spaced working position of the cutting blade.
  • Cutting blades used in practice usually have a slightly dish-shaped or dish-like shape, so that at comparatively high rotational speeds, which are in particular between several hundred and several thousand revolutions per minute, a widening of the cutting blade takes place, the extent of which depends on the rotational speed.
  • This expansion leads with the same axial position of the cutter head speed-dependent to different axial positions of the blade or cutting plane defined by the cutting edge of the cutting blade.
  • Even by the cutting edge itself and / or by their mounting on the slicing can over the width of a dimensional deviation arise, which has the consequence that is not exactly predictable, where exactly - seen across the width of the cutting edge - it to the actual contact with the cutting blade comes.
  • such a rotation-induced widening of the cutting blade is taken into account when the cutting blade or the cutting edge is moved into the working position starting from the previously determined axial reference position.
  • a cutting edge-related dimensional deviation As explained above, can be considered in a possible embodiment of the invention.
  • This consideration can be done in particular by using machine and / or knife specific default values that can be retrieved or set, for example, from a memory.
  • the invention further relates to a device for slicing food products, in particular a high-performance slicer, having a cutting blade which rotates and / or revolves in the slicing mode, with a rotary drive for the cutting knife, with which the cutting knife is mounted about a central axis of rotation Rotation is displaceable, with a cutter head to which the cutting blade attached and by means of which the cutting blade is movable, with a cutting edge, with which the cutting blade cooperates in the cutting operation, and with an axial drive, with the cutting blade and the cutting edge in aixaler direction relative to each other are adjustable.
  • a device for slicing food products in particular a high-performance slicer, having a cutting blade which rotates and / or revolves in the slicing mode, with a rotary drive for the cutting knife, with which the cutting knife is mounted about a central axis of rotation Rotation is displaceable, with a cutter head to which the cutting blade attached and by means of which the cutting blade is mov
  • a reference device is provided according to the invention, which is designed to determine an axial reference position of the cutting blade, in particular for adjusting the cutting gap between the cutting blade and the cutting edge, during an axial travel, in which the either non-rotating or rotating at a certain speed cutting blade and the cutting edge are adjusted in the axial direction relative to each other to monitor the cutter head and to detect a change in a state of the cutter head, which exceeds a predetermined amount when touching the cutting edge by the cutting blade.
  • the device is characterized in that the cutter head comprises at least one bearing for a rotation of the cutting blade and / or a thrust bearing for an axial movement of the cutting blade, wherein the referencing device is designed to detect during the monitoring of a possible due to the bearing clearance or the bearing clearance of the bearing movement.
  • the referencing device comprises at least one position sensor, which is arranged such that the radial distance from a fixed point to a component or assembly of the cutter head rotating in the slicing operation is measured as the reference surface, in particular the distance to a rotor which can be set in rotation by means of a rotary drive of the slicing apparatus.
  • the slicing device according to the invention is designed such that the inventive method described here can be carried out.
  • the referencing device is designed to detect a movement, in particular an offset, a change in position, a deflection, a bending and / or a curvature, of at least one part or area of the cutter head during the monitoring.
  • the cutter head may be a blank cutter head, which allows axial movement of the cutter blade for performing blank cuts when the cutter blade is rotating and / or rotating.
  • the axial drive with which the cutting blade and the cutting edge for determining the axial reference position of the cutting blade in the axial direction are adjusted relative to each other, identical to the axial drive, which moves the cutting blade or the cutter head for performing blank cuts axially.
  • the cutter head comprises a rotor which carries the cutting blade at a free end and is rotatable about the central axis of rotation by means of a rotary drive of the slicing device, wherein the referencing device is designed to monitor the rotor with respect to a fixed point during the monitoring especially to recognize a cutting head housing.
  • the rotor is rotatably mounted on a central hub member and axially adjustable relative to the hub member.
  • at least a portion of the axial drive extends through the hub member to the free end of the rotor supporting the cutting blade.
  • the homing device comprises at least one position sensor.
  • the position sensor is in particular a distance sensor.
  • the position sensor is preferably arranged in the region of the cutting blade, in particular in an axial region between the cutting blade and a wall of a cutting head housing. Depending on the specific configuration of the cutter head, the position sensor can also be arranged within the cutter head housing.
  • an evaluation and control unit is provided, which is designed to evaluate the state change of the cutter head exceeding a specifiable extent as reaching the reference position and then to stop the relative axial movement of the cutting blade and cutting edge.
  • the evaluation and control unit may be configured to move the cutting blade and / or the cutting edge into a spaced-apart working position using the reference position.
  • the evaluation and control unit can be designed to take into account a rotation-related, speed-dependent widening of the cutting blade when moving into the working position.
  • Fig. 1 schematically shows a cutter head 13 of a high-performance slicer according to the invention for slicing food products.
  • the volunteersmole products are on a product support 53 and are by a conveyor, not shown in Fig. 1 to the left in the direction of the front end of the product support 53 defining cutting edge 15 promoted.
  • the cutting edge 15, also referred to as a counter knife, defines a cutting edge plane 16.
  • a cutting blade 11 cooperates with the cutting edge 15, which here is a so-called sickle knife, which rotates about a central axis of rotation 19.
  • the cutting edge of the cutting blade 11 defines a knife plane 12, which is also referred to as a cutting plane.
  • the knife plane 12 and the cutting edge plane 16 are here spaced apart in the axial direction by a non-zero degree, which is referred to as a cutting gap 35.
  • a certain cutting gap 35 must be set, which ensures optimal for the respective application interaction between the cutting blade 11 and cutting edge 15.
  • the cutter head 13 is in the broadest sense a holder or central support for the cutting blade 11.
  • the cutting blade 11 is on a hollow cylindrical rotor 25 is attached to which a serving for receiving the blade 11 knife holder 26 is formed and which is displaceable by means of a rotary drive 27 in rotation about the central axis of rotation 19.
  • the rotary drive 27 comprises a drive motor 57, a drive shaft 43 and a drive toothed belt 45.
  • the rotor 25 is displaceable parallel to the central axis of rotation 19 by means of an axial drive 17, in order to carry out so-called idle cuts during normal operation and, before the start of the slicing operation, the respectively desired one Cutting gap 35 set.
  • the execution of blank sections is also well known to the person familiar with the operation of high-speed slicers, so that it need not be discussed further here.
  • the axial displaceability of the blade 11 supporting the rotor 25 is achieved in this embodiment, characterized in that the rotor 25 is mounted axially displaceably on a likewise hollow cylindrical rotor sleeve 55.
  • plain bearings 23, not shown, are provided as thrust bearings.
  • the bearing of the rotor 25 on the rotor sleeve 55 is configured such that it is also set in rotation about the offset by means of the toothed belt 45 in rotation rotor 25.
  • the rotor sleeve 55 itself is mounted via rolling bearings 21 on an inner hub member 39 which is fixed to a wall 29 of a stationary cutting head housing 31.
  • the rotary mounting of the rotor 25 thus takes place indirectly via the rotor sleeve 55 rotatably mounted on the hub member 39, while the axial bearing of the rotor 25 via the thrust bearings 23, which are effective between the rotor 25 and the rotor sleeve 55.
  • the axial adjustment of the rotor 25 by means of a spindle 49 which cooperates at its one end with the rotor 25, is guided in spindle nuts 47 and can be offset at its other end by means of the axial drive 17 in rotation about its longitudinal axis.
  • a rotation of the spindle 49 in response to the direction of rotation results in a correspondingly directed axial movement of the spindle 49 and thus of the rotor 25 relative to the stationary hub member 39 and thus to the cutting head housing 31.
  • the axial movement of the rotor 25 has a axial movement of the rotor 25 carried by the cutting blade 11 result.
  • An evaluation and control unit 37 of the slicer is connected to the rotary drive 27, the axial drive 17 and a position sensor 33, which will be discussed in more detail below and in which e.g. can be a distance sensor.
  • the bearings 21 for pivotal mounting of the rotor 25 have a design due to a bearing clearance, which is also referred to as bearing clearance.
  • the radial portion of this bearing clearance is utilized to detect that axial position of the cutting blade 11 in which the cutting blade 11 contacts the cutting edge 15, i. in which the knife plane 12 and the cutting edge plane 16 coincide when the cutting blade 11 is moved against the cutting edge 15.
  • this reference position can then be set in a known per se and therefore unspecified manner of the respective desired cutting gap 35, starting from this reference position, the cutting blade 11 is moved by the axial drive 17 of the cutting edge 15 away in a working position, in which the resulting cutting gap 35 has the size required for the particular application.
  • the radial play in the rolling bearings 21 is utilized in that the radial component of an offset or a change in position of the rotor 25 is detected, which results when at the end of an axial travel of the cutting blade 11 in the direction of the cutting edge 15, the cutting blade 11 against the Cutting edge 15 abuts.
  • the resulting moment can raise the rotor 25 due to the radial play in the bearings 21.
  • This deflection of the rotor 25 in Fig. 1 upwards can be detected by means of the already mentioned position sensor 33.
  • the achievement of the reference position of the cutting blade 11, in which the cutting blade 11 touches the cutting edge 15, can thus be recognized that during an axial travel of the cutting blade 11 in the direction of the cutting edge 15, the output of the position sensor 33 is monitored by the evaluation and control unit 37 and a change of the output signal exceeding a predeterminable extent is evaluated as reaching the reference position.
  • a preferred way of attaching the position sensor 33 is to attach it to a holder 41, which in turn is attached to the fixed cutting head housing 31.
  • the position of the position sensor 33 is selected inter alia as a function of the structural conditions.
  • the position sensor 33 is positioned so that the maximum deflection of the rotor 25 can be exploited, so that in practice, taking into account the structural conditions is preferably sought, the position sensor 33 above the rotor 25 and viewed in the axial direction as close as possible to the cutting blade eleventh to position.
  • FIG. 1 shows a blank cutter head for a sickle blade 11 rotating only about the central axis of rotation 19
  • FIG Fig. 2 a possible example of a blank cutter head, with which a circular blade 11 both in rotation about its own blade axis 20 and at the same time in a planetary orbital motion about a central axis of rotation 19 can be offset.
  • the self-rotation of the circular blade 11 about the blade axis 20 is generated by a spindle 65 supporting the circular blade 11 being rotated about the blade axis 20 when a rotor 25 on which the spindle 65 and thus the circular blade 11 are eccentric with respect to the central axis of rotation 19 is attached to the central axis of rotation 19 is set in rotation, by means of a toothed belt, not shown.
  • the spindle 65 and thus the circular blade 11 then perform a planetary orbital motion about the central axis of rotation 19 and at the same time a self-rotation about the blade axis 20.
  • the rotor 25 is rotatably supported by rolling bearings 21 on a central support 67, which is fixed to a carrier 14 for the cutter head 13 by screw 71.
  • the carrier 14 in turn is mounted on a fixed cutting head housing 31 by means of two laminated cores 69 which are spaced apart from one another in the axial direction. These laminations 69 allow a deflection of the carrier 14 and thus the entire cutter head 13 in the axial direction for performing blank cuts and for cutting gap adjustment.
  • Axial drive ensures axial deflection, comprising an adjusting device 83, a spindle 77 and a spindle nut 78.
  • the cutter head 13 located on the other side of an imaginary parting plane 61 together with the rotor 25 and circular blade 11 can be displaced axially, while at the same time the rotor 11 of the cutter head 13 carrying the circular blade 11 is set in rotation by means of said toothed belt ,
  • Fig. 1 described embodiment may also in the circular blade head 13 according to Fig. 2 the bearing clearance or the bearing clearance of the rotor 25 rotationally bearing rolling bearings 21 are exploited to detect an offset or a change in position - in general, a movement enabled by the bearing clearance or the bearing clearance - of the rotor 25 when the cutting blade 11 during an axial travel strikes against the cutting edge, not shown here.
  • the triangles in Fig. 2 illustrate by way of example possible positions A, B and C for a position sensor 33, according to the embodiment according to FIG Fig. 1 the movement of the rotor 25 relative to a fixed point, in particular relative to the cutting head housing 31, can be measured.
  • the position sensor 33 is disposed at the position A or at the position B and oriented accordingly, a radial position change of the rotor 25 utilizing the radial bearing clearance of the roller bearings 21 can be detected.
  • the positions A and B are particularly preferred when the rotor 25 is provided for these drive toothed belt at these locations with so-called flanged wheels.
  • the peripheral region of the rotor 25 can be designed as a reference surface for the distance measurement in a suitable manner.
  • the reference surface for the distance measurement can be formed on the aforementioned flanged wheels his.
  • one of the flanged wheels can be provided with an outwardly angled end region.
  • the position sensor 33 is arranged at the position C and oriented accordingly, an axial position change of the rotor 25 taking advantage of the axial bearing play of the roller bearings 21 can be detected.
  • the axial movement of the entire cutter head 13 and thus of the rotor 25 caused by the adjusting unit 63 e.g. be taken into account that a corresponding correction value is included.
  • Fig. 3 shows the qualitative course of the output signal of a position sensor, as measured in experiments. Shown is the time profile of the sensor signal measured, for example, in mA, which is a measure of the radial distance d between the position sensor 33 and the lateral surface of the rotor 25 in a structure corresponding Fig. 1 represents.
  • the output of the position sensor 33 shows two characteristic times t1 and t2, between which a change in the distance between the position sensor 33 and the rotor 25 from a higher output value d2 to a lower end value d1 takes place.
  • This waveform thus characteristically reflects the lifting of the rotor 25 by the moment applied to the cutting blade 11 upon contact with the cutting edge 15.
  • the cutting edge 15 comes into contact with the cutting blade 11 and a subsequent further lifting of the rotor 25.
  • Based on the constant speed of the rotor 25 can be closed from the time t2, from which the output signal of the position sensor 33 no longer changes, to the position of the cutting edge 15.
  • the time t2 corresponds to an axial position as a touch point or zero position at a speed of the cutting blade of 600 revolutions per minute.
  • the invention thus provides a simple, reliable and cost-effective possibility, both for a knife head for a sickle knife and for a knife head for a circular blade, the contact of the cutting edge 15 by the knife 11 and thus an axial reference position of the knife 11 which can be used in particular for a cutting gap setting to recognize, and solely by utilizing the influence of the contact of the cutting edge 15 by the knife 11 on the blade 11 carrying the cutter head 13 and in particular the influence on the central bearing of the blade 11, in particular by the radial or axial bearing clearance of the cutter head 13 exploited is to detect a change in position of the blade 11 supporting the rotor 25, for example, by a simple displacement or distance measurement.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Details Of Cutting Devices (AREA)

Claims (15)

  1. Procédé de détermination d'une position de référence axiale d'un couteau de coupe (11) qui, pendant l'opération de coupe, se déplace en rotation et/ou en révolution planétaire sur un dispositif de coupe de produits alimentaires, en particulier sur une trancheuse à haute performance,
    dans lequel
    le couteau de coupe (11) est monté sur une tête de couteau (13) au moyen de laquelle le couteau de coupe (11) est mobile, et
    le procédé comprend les étapes consistant à :
    - déplacer le couteau de coupe (11), qui ne tourne pas ou bien qui tourne à une vitesse de rotation définie, et une arête de coupe (15) l'un par rapport à l'autre au moins sensiblement axialement l'un vers l'autre au moyen d'un entraînement axial (17),
    - surveiller la tête de couteau (13) pendant le déplacement axial, et
    - considérer un changement d'état de la tête de couteau (13), qui dépasse une valeur prédéfinie, comme une venue en contact de l'arête de coupe (15) avec le couteau de coupe (11) et comme une arrivée dans la position de référence ;
    caractérisé en ce que
    la tête de couteau (13) comprend au moins un palier (21, 23) pour le couteau de coupe (11), en particulier un palier rotatif (21) pour une rotation du couteau de coupe (11), et/ou un palier axial (23) pour un mouvement axial du couteau de coupe (11), et lors de la surveillance un mouvement possible est détecté, qui est causé par le jeu interne ou par le jeu du palier (21, 23).
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    lors de la surveillance de la tête de couteau (13) pendant le déplacement axial, un mouvement possible est détecté, qui est causé par le jeu interne ou par le jeu d'au moins un palier à roulement à titre de palier rotatif (21) et/ou d'au moins un palier lisse à titre de palier axial (23) de la tête de couteau (13).
  3. Procédé selon la revendication 1 ou 2,
    caractérisé en ce que
    lors de la surveillance, un mouvement est détecté, en particulier un décalage, un changement de position, une déviation, une flexion, une déformation et/ou une courbure, d'une partie ou d'une zone au moins de la tête de couteau (13) et/ou du couteau de coupe (11), et ledit mouvement est évalué vis-à-vis d'un écart par rapport à une position de départ.
  4. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que
    lors de la surveillance, un mouvement radial et/ou un mouvement axial de la tête de couteau (13) et/ou du couteau de coupe (11) par rapport à un axe de rotation central (19) du couteau de coupe (11) est détecté, et/ou lors de la surveillance, un mouvement par rapport à un point fixe en particulier sur un boîtier de tête de coupe (31) est détecté.
  5. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que
    la tête de couteau (13) est une tête de couteau de coupe à vide qui, lorsque le couteau de coupe (11) et en rotation et/ou en révolution, permet un mouvement axial du couteau de coupe (11) pour effectuer des coupes à vide, et/ou
    la tête de couteau (13) comprend un rotor (25) qui porte le couteau de coupe (11) à une extrémité libre et qui est susceptible d'être mis en rotation autour d'un axe de rotation central (19) au moyen d'un entraînement en rotation (27) du dispositif de coupe, et lors de la surveillance un mouvement du rotor (25) par rapport à un point fixe en particulier sur un boîtier de tête de coupe (31) est détecté, et en particulier le rotor (25) est déplacé parallèlement à l'axe de rotation (19) en particulier au moyen de l'entraînement axial (17), pour effectuer des coupes à vide.
  6. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que
    la surveillance s'effectue au niveau du couteau de coupe (11), en particulier dans une zone axiale entre le couteau de coupe (11) et une paroi (29) d'un boîtier de tête de coupe (31) ou à l'intérieur d'un boîtier de tête de coupe (31), et/ou
    lors de la surveillance, au moins un capteur de position (33), en particulier un capteur de distance est utilisé, et
    en particulier, au moyen du capteur de position (33), une distance radiale ou axiale (51) par rapport à un point fixe en particulier sur un boîtier de tête de coupe (31) et/ou la distance (51) d'un point fixe en particulier sur un boîtier de tête de coupe (31) par rapport à un composant ou à une unité structurelle de la tête de couteau (13), qui tourne pendant l'opération de coupe, est mesurée à titre de surface de référence tournant pendant l'opération de coupe, en particulier par rapport à un rotor (25) susceptible d'être mis en rotation au moyen d'un entraînement en rotation (27) du dispositif de coupe.
  7. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que
    les étapes sont exécutées plusieurs fois pour différentes positions angulaires du couteau de coupe (11) et/ou pour différentes position de référence du couteau de coupe (11) par rapport à l'arête de coupe (15).
  8. Procédé de positionnement d'un couteau de coupe (11) qui, pendant l'opération de coupe, se déplace en rotation et/ou en révolution planétaire par rapport à une arête de coupe (15) sur un dispositif de coupe de produits alimentaires, en particulier sur une trancheuse à haute performance, en particulier pour régler l'intervalle de coupe (35) entre le couteau de coupe (11) et l'arête de coupe (15),
    dans lequel
    - par un procédé selon l'une des revendications précédentes, une position de référence axiale du couteau de coupe (11) est déterminée, dans laquelle le couteau de coupe (11) vient toucher l'arête de coupe (15), et
    - à partir de la position de référence, le couteau de coupe (11) est déplacé jusque dans une position de travail espacée de l'arête de coupe (15) et/ou l'arête de coupe (15) est déplacée jusque dans une position de travail espacée du couteau de coupe (11), et en particulier lors du mouvement jusque dans la position de travail, un élargissement du couteau de coupe (11) dû à la rotation et dépendant de la vitesse de rotation est pris en compte.
  9. Dispositif de coupe de produits alimentaires, en particulier trancheuse à haute performance, pour mettre en oeuvre un procédé selon l'une des revendications précédentes, comportant
    - un couteau de coupe (11) qui se déplace en rotation et/ou en révolution pendant l'opération de coupe,
    - un entraînement en rotation (27) pour le couteau de coupe (11), permettant de mettre en rotation le couteau de coupe (11) autour d'un axe de rotation central (19),
    - une tête de couteau (13) sur laquelle est monté le couteau de coupe (11) et qui permet de déplacer le couteau de coupe (11),
    - une arête de coupe (15) avec laquelle coopère le couteau de coupe (11) pendant l'opération de coupe, et
    - un entraînement axial (17) permettant de déplacer le couteau de coupe (11) et l'arête de coupe (15) en direction axiale l'un par rapport à l'autre, dans lequel
    il est prévu un dispositif de référencement (33, 37) qui est réalisé pour déterminer une position de référence axiale du couteau de coupe (11), en particulier pour régler un intervalle de coupe (35) entre le couteau de coupe (11) et l'arête de coupe (15), et qui est réalisé pour surveiller la tête de couteau (13) lors d'un déplacement axial pendant lequel le couteau de coupe (11), qui ne tourne pas ou bien qui tourne à une vitesse de rotation définie, et l'arête de coupe (15) sont déplacés l'un par rapport à l'autre au moins sensiblement en direction axiale, et pour détecter un changement d'un état de la tête de couteau (13) qui dépasse une valeur prédéfinie lors de la venue en contact de l'arête de coupe (15) avec le couteau de coupe (11) ;
    caractérisé en ce que
    la tête de coupe (13) comprend au moins un palier (21, 23) pour le couteau de coupe (11), en particulier un palier rotatif (21), de préférence un palier à roulement, pour une rotation du couteau de coupe (11), et/ou un palier axial (23), de préférence un palier lisse, pour un mouvement axial du couteau de coupe (11), et
    le dispositif de référencement (33, 37) est réalisé pour détecter un mouvement possible, causé par le jeu interne ou par le jeu du palier (21, 23), lors de la surveillance.
  10. Dispositif selon la revendication 9,
    caractérisé en ce que
    le dispositif de référencement (33, 37) comprend au moins un capteur de position (33), en particulier un capteur de distance, et
    le capteur de position (33) est agencé de telle sorte que la distance radiale (51) d'un point fixe en particulier sur un boîtier de tête de coupe (31) par rapport à un composant ou à une unité structurelle de la tête de couteau (13) qui tourne pendant l'opération de coupe est mesurée à titre de surface de référence, en particulier la distance (51) par rapport à un rotor (25) susceptible d'être mis en rotation au moyen d'un entraînement en rotation (27) du dispositif de coupe.
  11. Procédé selon la revendication 9 ou 10,
    caractérisé en ce que
    le dispositif de référencement (33, 37) est réalisé pour détecter, lors de la surveillance, un mouvement, en particulier un décalage, un changement de position, une déviation, une flexion, une déformation et/ou une courbure, d'une partie ou d'une zone au moins de la tête de couteau (13) et/ou du couteau de coupe (11).
  12. Procédé selon l'une des revendications 9 à 11,
    caractérisé en ce que
    la tête de couteau (13) est une tête de couteau de coupe à vide qui, lorsque le couteau de coupe (11) est en rotation et/ou en révolution, permet un mouvement axial du couteau de coupe (11) pour effectuer des coupes à vide, de préférence au moyen de l'entraînement axial (17), et/ou la tête de couteau (13) comprend un rotor (25) qui porte le couteau de coupe (11) à une extrémité libre et qui est susceptible d'être mis en rotation autour de l'axe de rotation central (19) au moyen d'un entraînement en rotation (27) du dispositif de coupe, et
    le dispositif de repérage (33, 37) est réalisé pour détecter, lors de la surveillance, un mouvement du rotor (25) par rapport à un point fixe en particulier sur un boîtier de tête de coupe (31), et en particulier le rotor (25) est déplaçable parallèlement à l'axe de rotation (19) en particulier pour effectuer des coupes à vide, de préférence au moyen de l'entraînement axial (17).
  13. Procédé selon la revendication 12,
    caractérisé en ce que
    le rotor (25) est monté mobile en rotation sur un élément formant moyeu central (39) et est déplaçable axialement par rapport à l'élément formant moyeu (39), et
    de préférence une partie au moins de l'entraînement axial (17) s'étend à travers l'élément formant moyeu (38) jusqu'à une extrémité libre du rotor (25) portant le couteau de coupe (11).
  14. Procédé selon la revendication 13,
    caractérisé en ce que
    le capteur de position (33) est agencé au niveau du couteau de coupe (11), en particulier dans une zone axiale entre le couteau de coupe (11) et une paroi (29) d'un boîtier de tête de coupe (31) ou à l'intérieur d'un boîtier de tête de coupe (31).
  15. Procédé selon l'une des revendications 9 à 14,
    caractérisé en ce que
    il est prévu une unité d'évaluation et de commande (37) qui est réalisée pour considérer un changement d'état de la tête de couteau (13), dépassant une valeur prédéfinie, comme une arrivée dans la position de référence, et pour interrompre alors le déplacement axial relatif du couteau de coupe (11) et de l'arête de coupe (15), et
    l'unité d'évaluation et de commande (37) est en particulier réalisée pour déplacer le couteau de coupe (11) et/ou l'arête de coupe (15) jusque dans une position de travail mutuellement espacée, en utilisant la position de référence, et
    l'unité d'évaluation et de commande (37) est en particulier réalisée pour prendre en compte, lors du mouvement jusque dans la position de travail, un élargissement du couteau de coupe (11) dû à la rotation et dépendant de la vitesse de rotation.
EP14756044.5A 2013-09-11 2014-08-27 Methode pour trouver la position de reference axiale d'un couteau rotatif Active EP3001825B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013218158.2A DE102013218158A1 (de) 2013-09-11 2013-09-11 Verfahren zum Ermitteln einer axialen Referenzstellung eines Schneidmessers
PCT/EP2014/068150 WO2015036240A1 (fr) 2013-09-11 2014-08-27 Procédé de détermination d'une position de référence axiale d'une lame de coupe en rotation

Publications (2)

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EP3001825A1 EP3001825A1 (fr) 2016-04-06
EP3001825B1 true EP3001825B1 (fr) 2019-02-27

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DE102020119226A1 (de) * 2020-07-21 2022-01-27 Multivac Sepp Haggenmüller Se & Co. Kg Verfahren zum automatischen Einstellen des Schneidspaltes einer Aufschneide-Maschine sowie hierfür geeignete Aufschneide-Maschine

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DE10037709A1 (de) * 2000-08-02 2002-02-14 Gaemmerler Ag Schneidvorrichtung
DE10143508A1 (de) * 2001-09-05 2003-03-20 Biforce Anstalt Vaduz Verfahren zur Schneidspalteinstellung
DE10359149A1 (de) * 2003-12-16 2005-07-21 Cfs Kempten Gmbh Schneidspalteinstellung
DE102004033568A1 (de) * 2004-07-09 2006-02-09 Cfs Kempten Gmbh Schneidleiste
DE102006043697A1 (de) 2006-09-18 2008-03-27 Weber Maschinenbau Gmbh & Co. Kg Verstelleinheit
DE102008019776A1 (de) * 2008-04-18 2009-10-22 CFS Bühl GmbH Verfahren, Vorrichtung sowie Messer zum Aufschneiden von Lebensmitteln
DE102009011860A1 (de) * 2009-03-05 2010-09-09 Weber Maschinenbau Gmbh Breidenbach Vorrichtung und Verfahren zur Einstellung eines Schneidspalts an einer Schneidvorrichtung
DE102010034360A1 (de) * 2010-06-11 2011-12-15 CFS Bühl GmbH Verfahren und Vorrichtung zur Schneidspalteinstellung einer Aufschneidevorrichtung

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EP3001825A1 (fr) 2016-04-06
DE102013218158A1 (de) 2015-03-12

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