Classifications

• • 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
  • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
  • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
  • B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
  • B26D1/06—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
  • B26D1/10—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates in, or substantially in, a direction parallel to the cutting edge
  • B26D1/11—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates in, or substantially in, a direction parallel to the cutting edge with a plurality of cutting members
• • 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
  • B26D7/2614—Means for mounting the cutting member
• • 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
  • B26D5/02—Means for moving the cutting member into its operative position for cutting
• • 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
• • 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
• • 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
  • B26D7/27—Means for performing other operations combined with cutting
  • B26D7/32—Means for performing other operations combined with cutting for conveying or stacking cut product

Definitions

• the present invention is in the field of equipment used for cutting into slices of alterable, deformable and heterogeneous products such as food products and other products and relates to a cutting head with oscillating knives and a cutting installation comprising such a head.
• these facilities typically include a cutting table and a cutting head mounted above the table and adapted to cut in several slices the food product present on the latter.
• the cutting head of this type of installation generally comprises a frame in which are mounted two oscillating knives driven in alternative translation.
• the head is also animated by a movement of advance and withdrawal relative to the cutting table. The combination of the advance movement of the head with the reciprocating movement of the knives produces a cutting movement.
• the cutting table is angularly rotatable about a geometric axis containing the knife wire when the head is in the extreme low position. This arrangement makes it possible to adjust the inclination of the cutting plane. Finally means are provided to ensure the displacement of the product on the cutting table.
• Patent application FR 2 627423 discloses a slicing system with a constant weight. This slicing system is adapted to escalate a piece of a frozen food product held vertically and divide it into slices of the same weight values using a cutting member in the form of a disc mounted on a rotating arm. The vertical support of the product is moved step-by-step facing the cutting member for slicing.
• FR 2 894 433 is also known, "A method and device for cutting muscles" for dividing a muscle into successive slices of the same weight value.
• the device according to this patent uses a cutting head carried by a manipulator arm known per se, able to successively guide the cutting head according to cutting planes of different inclinations.
• the use of a manipulator arm has the advantage of precise positioning of these different cutting planes and avoids the displacement of the product for cutting each slice.
• the immobilization of the product during its cutting into slices no longer allows the use of clearance groove to avoid any risk of contact between the table and the cutting edge of the tool and any risk of non-separative cutting of the wafer.
• DISCLOSURE OF THE INVENTION The present invention aims to solve the aforementioned problems in a simple manner.
• the head according to the invention for slicing products arranged on a cutting table, comprising a frame supporting at least one movable cutting knife and a drive assembly of said knife, said knife having a cutting edge.
• a fixing support adapted to be fixed to a manipulator means, said support being secured to said frame by a hinge means defining a geometric axis of articulation, parallel to the cutting edge of the knife,
• At least one angular stop secured to the support or the frame to limit the pivoting movement of the support and the frame relative to each other
• At least one resilient means for pivotally urging the frame towards the angular stop
• Such an arrangement is able to avoid any contact between the cutting table and the cutting edge of the knife or knives. This avoids dulling or irreversibly damage these cutting members. We also reduce their frequency of sharpening.
• the cutting edge and the bevel of said knife are positioned recessed or tangentially to an envelope surface formed by a generatrix parallel to the hinge axis AA 'which is slidable on the profile of the blade. lateral stop.
• the lower knife is provided with a bevel terminated by the cutting edge, the bevel is turned downwards and in the maximum clearance position of the head, the plane formed by the bevel is horizontal.
• the present invention also relates to a cutting installation equipped with at least one cutting head according to the invention.
• This cutting installation is essentially characterized in that it comprises on the one hand a cutting table and on the other hand a manipulator means whose end element receives in fixing the support of the cutting head, the manipulator means being suitable to orient the cutting head according to an inclined cutting plane and being adapted to print said head a movement of advance and withdrawal according to this cutting plane.
• the bevel of the lower knife is parallel to the table and comes to slide against the latter.
• FIG. 1 is a perspective view of a head, according to a first embodiment
• FIG. 2 is a view from above of the head according to the first embodiment of the invention.
• FIG. 3 is a cross-sectional view, along line 1 / l, of FIG. 2;
• FIG. 4 is a plan view of a cutting knife;
• FIG. 5 is section, to scale, 2 along the line II / II of FIG. 4,
• FIG. 6 is a bottom plan view of a head according to the first embodiment
• FIG. 7 is a cutaway perspective view of a head according to a first embodiment showing the mechanism for driving the knives;
• FIG. 8 shows a plan view of an installation according to the invention
• FIG. 9 shows in perspective a cutting head according to a second embodiment
• FIG. 10 shows the detail of an elastic means and a stop of the head according to the second embodiment, the motor of the means of actuation of the knives is not shown in this figure,
• FIG. 11 is a perspective view of a cutting head according to the second embodiment equipped with an adjustment tool according to the invention
• FIG. 12 is a cross section, along a median plane, of the adjusting tool according to the invention
• FIG. 13 is a cross section, in a lateral plane, of the adjusting tool according to the invention. Best way to realize the invention
• FIG. 1 to 7 a cutting head 1 according to the invention adapted to slice products disposed on a cutting table 2 appropriate.
• This cutting head comprises a frame 3 supporting at least one movable cutting knife 4 and a drive assembly 5 of the knife in a cutting motion of the rectilinear reciprocating type.
• the frame 3 is secured to a fixing support 20 intended to be fixed to a manipulator means 30 ensuring the displacement of the head 1 in the space according to intersecting geometrical planes at the cutting table 2 and inclined with respect to the latter defined and variable angular values.
• the frame 3 comprises two parallel flanks 6 kept spaced from one another by at least one spacer, the knife or knives 4 being arranged between the two sides 6.
• the frame 3 comprises at least one front spacer 7 and at least one rear spacer 8, the front and rear being determined by the direction of advance of the head 1 to the piece of product to be cut.
• These rear front struts are rigidly fixed to the two lateral flanks 6.
• the cutting knife 4 has a longitudinal cutting edge 9 formed by the intersection of an upper planar face 10 with a lower bevel 10a in the form of a flat facet, the cutting edge 9 being rectilinear or serrated.
• two knives 4 and 4 ' mounted in parallel and juxtaposed manner.
• the knife 4 ' is disposed above the knife 4 and occupies a position symmetrical with respect to the latter.
• the cutting edges 9 of the two knives are in superposed relationship with each other.
• the two knives 4, 4 ' are each animated with an alternating rectilinear translation movement, the movement of each of the knives being in phase shift of a value equal to Pi radians relative to the movement of the other.
• Each knife 4, 4 ' is equipped with two lateral lugs 11, vertical, projecting upwards, each receiving in fixing at least one guide shaft 12, horizontal, slidably engaged in a sliding bearing 13 of guide, integral with the sidewall 6 correspondent.
• One of the two guide shafts 12 each knife 4, 4 ' is engaged with the drive assembly 5.
• Each knife is preferably releasably attached to its two respective legs by screws.
• the drive assembly 5 is carried by the frame 3 of the head 1.
• This assembly comprises an electric motor 14 having a rotary output shaft coupled directly or by means of a gears motion transmission to one crankshaft 15 mounted on bearings, provided with two crank pins on each of which is engaged the head of a rod 16 receiving in articulation the guide shaft of one of the knives.
• the crankshaft 15 and the two connecting rods 16 are arranged in a protective casing 17 and that the driving assembly 5 is rigidly fixed by this protective casing to one of the sidewalls 6 of the frame 3 as well as at the rear spacer 8.
• the fixing support 20 is secured to the frame 3 by a hinge means defining a geometric articulation axis AA 'parallel to the cutting edge of the knife 4 or of each knife 4, 4' said hinge means being associated with an elastic means 23 urging the frame 3 against an abutment 24 preferably adjustable carried by the fixing support 20.
• the hinge means is constituted by a first yoke 21 integral with the frame 3 and a second yoke 22 secured to the support 20, the two yokes 21, 22 being articulated to one another by two coaxial journals.
• the clevis 21 is formed of two clevis wings fixed in known manner to the rear spacer 8.
• the resilient means 23 is constituted by an elastic member such as a twisted torsion spring, wound around a finger 18 axially extending one of the two pivot pins.
• This spring 23 by one of its ends acts on the frame 3 and more precisely on the spacer 8 and by its other end acts on the support 20.
• the hinge means is constituted by an elastically flexible blade, fixed on the one hand of the support 20 and on the other hand of the frame 3, said blade also constituting the elastic means.
• the adjustable stop 24 is advantageously constituted by two abutment elements in the form of a screw, engaged by their threaded rods in threads made in the fastening support 20 and facing the two wings of 21. These two clevis wings each have a radial extension 21a capable of coming, under the effect of the action of the elastic means 23, against the corresponding abutment element and more particularly against the head of the screw constituting this last.
• the abutment 24 is constituted by a lever integral with the support 20 and more precisely of one of the articulation journals, this journal being immobilized in translation and rotation in the corresponding bore formed in said support 20.
• This pin by passing through a through bore formed in one of the walls of the casing 17, this wall being advantageously constituted by the corresponding flank 6 of the head , penetrates into the volume of the housing to receive the stop 24 in the form of a lever, this stop being blocked both in translation and rotation on said pin.
• the elastic means 23, according to this embodiment, is constituted by a resilient pad mounted in compression between the lever 24 and a pusher integral with a partition wall, internal to the protective casing 17 and rigidly fixed to the sidewall 6.
• the frame 3 of the head is held against the stop 24 by the resilient means 23.
• the corresponding flank 6 has, opposite the abutment 24 an adjustable pin 24a subject to come against this stop to limit the pivoting movement of the head downwards.
• This pin is advantageously constituted by a screw engaged in the tapping of a nut form fixed rigidly to the sidewall 6.
• the frame 3 of the head carries at least one lateral abutment 25 projecting downwards, adapted to come at the end of cutting the wafer, against the table 2 so that, by continuing the advance movement, the frame 3 and the elements it carries are forced to pivot about the axis AA 'and this against the action of the resilient means 23.
• the combined action of the table 2 on the stop 25 and movement in advance leads to reduce the inclination of the frame 3 of the head 1 relative to the plane of the table 2 and consequently the inclination of the bevel 10a of the lower knife 4 relative to this plane until it is zero .
• the frame 3 of the head 1 and the elements it carries pivot about an instantaneous axis of rotation BB 'coincides with the cutting edge of the knife 4 or located at a very short distance from the latter.
• the abutment 25 is shaped and positioned so that this axis BB 'coincides with the upper plane of the table 2 or is situated above and at a short distance from the latter.
• the head is equipped with two lateral stops 25 fixed respectively to the two lateral sides 6 of the frame 3.
• Each abutment 25 is in the form of a plate having a crown 25a rounded in an arc circumferential circle by which it is intended to come into contact with the cutting table.
• the radius of curvature is of the order of a few millimeters while for the head according to the second embodiment, this radius of curvature is very small of the order of a few tenths of a millimeter .
• This rounded vertex arrangement makes it possible to keep the spacing distance of the lower knife to the table constant during the contact / movement of the tool on the table.
• the frame comprises a sliding sole 26 mounted between the two lateral flanks 6 behind the knife or knives 4, 4 ', said sole constituting screen.
• This sliding sole 26, in the direction of advance of the head 1, has through holes 27 to reduce the adhesion between said sole and the product.
• This sliding floor may have a rear zone raised upwards as shown in FIG. 11.
• This sliding sole of generally rectangular shape, comprises two rear legs through which it is fixed by screw to the rear spacer 8 to prevent overcutting, that is to say the formation of a cut in a slice already cut , the frame 3 between the two sides 6 may be provided with a pushing element 28 able to act on the wafer being cut for move it away from the product.
• This thrust member is also a deflector and prevents the slice being cut from coming on the knives.
• this thrust element 28 is constituted by a rectangular-shaped wall comprising two rearwardly oriented lateral wings, by which it is fixed to the front spacer 7.
• the thrust element 28 is perforated and comprises for this purpose through holes 29.
• the thrust element 28 is adjustable in inclination.
• FIG 8 an installation according to the invention.
• This installation comprises, on the one hand, a cutting table 2 and, on the other hand, a manipulator means 30 whose end element receives, in fixing, the support 20 of the cutting head 1, the manipulator means 30 being able to orient the head of the cut 1 according to an inclined cutting plane and being adapted to print said head 1 a movement of advance and withdrawal according to this cutting plane.
• the manipulator means 30 is controlled and controlled by a control and control automaton known per se.
• This manipulator means is preferably constituted by a manipulator arm with several degrees of freedom.
• the cutting head is fixed to the manipulator arm with the possibility of pivoting movement of limited amplitude around an axis intersecting and perpendicular to the axis AA 'and on either side of an original position. This pivoting movement takes place against the action of resilient members that urge the head to its original position.
• the support 20 is secured to the terminal element of the manipulator means by bolts and each bolt, by the rod of the screw, is engaged in a sleeve radially elastically deformable, this sleeve being engaged in a bore formed in the end element of the arm.
• each knife 1 is associated an adjustment tool consisting of a longiform element 31 in which is formed a central shape of rectilinear V and two lateral forms of rectilinear V 33, these two lateral forms. being advantageously formed in elements removably attached to the elongated element 31.
• Each central and lateral shape of Ve has a rectilinear bottom edge. The bottom edges of the side Vee shapes 33 are aligned relative to each other and this alignment is parallel to the bottom edge of the central shape of VE 32 and is offset by a few hundredths of a millimeter from said bottom stop.
• the cutting edges of the knives are applied against the bottom edge of the central shape of V e and simultaneously the abutments 25 by the apices 25 a are brought against the bottom edges of the two lateral V e forms. Then the abutments 25 are immobilized in position by tightening the screws ensuring their attachment to the side flanks 6.
• the adjustment tool comprises a retaining stop 34 designed to bear on the upper knife 4 'and a vice means constituted by a clamping bar 35 intended to be applied in a clamp against the dorsal face of the lower knife and this under the effect of the action of two maneuvering screws 36 each engaged by their threaded rod in a tapping made in the bar 35 and in a smooth bore made in the elongate element 31.
• the cutting table 2 may be constituted by a conveyor of a known type. This conveyor will be controlled by the control and control automat associated with the manipulator arm 30.

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• Life Sciences & Earth Sciences (AREA)
• Forests & Forestry (AREA)
• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Nonmetal Cutting Devices (AREA)

Applications Claiming Priority (2)

Publications (1)

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ID=39278387

Family Applications (1)

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Family Cites Families (6)

• 2007
  • 2007-09-27 FR FR0706771A patent/FR2921579B1/fr active Active
• 2008
  • 2008-09-27 WO PCT/FR2008/001347 patent/WO2009080905A2/fr active Application Filing
  • 2008-09-27 EP EP08864198A patent/EP2214875A2/de not_active Withdrawn

Non-Patent Citations (1)

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