EP2655022B1 - Dispositif de coupe - Google Patents

Dispositif de coupe Download PDF

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Publication number
EP2655022B1
EP2655022B1 EP11813418.8A EP11813418A EP2655022B1 EP 2655022 B1 EP2655022 B1 EP 2655022B1 EP 11813418 A EP11813418 A EP 11813418A EP 2655022 B1 EP2655022 B1 EP 2655022B1
Authority
EP
European Patent Office
Prior art keywords
cutting
carriage
blade
cam
flat element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP11813418.8A
Other languages
German (de)
English (en)
Other versions
EP2655022A2 (fr
Inventor
Massimiliano SALE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Manz Italy SRL
Original Assignee
Manz Italy SRL
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from ITMO2010A000366A external-priority patent/IT1403342B1/it
Priority claimed from ITMO2010A000364A external-priority patent/IT1403341B1/it
Application filed by Manz Italy SRL filed Critical Manz Italy SRL
Publication of EP2655022A2 publication Critical patent/EP2655022A2/fr
Application granted granted Critical
Publication of EP2655022B1 publication Critical patent/EP2655022B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B26D1/08—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 of the guillotine type
    • 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
    • B26D1/08—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 of the guillotine type
    • B26D1/09—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 of the guillotine type 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
    • 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
    • B26D1/56—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 travels with the work otherwise than in the direction of the cut, i.e. flying cutter
    • B26D1/60—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 travels with the work otherwise than in the direction of the cut, i.e. flying cutter and is mounted on a movable carriage
    • 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
    • B26D1/56—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 travels with the work otherwise than in the direction of the cut, i.e. flying cutter
    • B26D1/60—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 travels with the work otherwise than in the direction of the cut, i.e. flying cutter and is mounted on a movable carriage
    • B26D1/605—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 travels with the work otherwise than in the direction of the cut, i.e. flying cutter and is mounted on a movable carriage for thin material, e.g. for sheets, strips or the like
    • 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
    • B26D5/08—Means for actuating the cutting member to effect the cut
    • B26D5/16—Cam means
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
    • B65H35/04—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators
    • B65H35/06—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators from or with blade, e.g. shear-blade, cutters or perforators

Definitions

  • the invention relates to a cutting device, in particular for cutting flat elements, for example in the form of a sheet or strip.
  • the invention can be used for cutting flat elements in the form of a sheet or strip, for example approximately 20 micrometres to 200 micrometres thick, made, for example, of composite, metal, plastic, paper or ceramic material.
  • the invention can be suitable for cutting a continuous flat element transported along an advancing path to separate the continuous flat element into various distinct portions.
  • a cutting device for cutting a flat element that advances in an advancing direction, with a cut that is transverse to the advancing direction.
  • the cutting device according to the invention can particularly comprise two blades that cooperate together, superimposing the cutting edges thereof, to perform a succession of transverse cuts on the flat element, which is continuous and extends in length in the advancing direction, to divide the flat element into various distinct portions.
  • Such a cutting device in which the cutting edges of the blades are tilted in relation to one another to thus form a cutting angle defined by the parallel projections of the cutting edges onto a plane that is normal to the direction of the length of the flat element to be cut; the blades operate with a cutting mode of the scissor type, according to which the current cutting zone, which consists of the crossing point of the cutting edges, advances from one side to another of the width of the flat element to be cut. It is further known that in order to improve the effectiveness of the cut, both the cutting edges, or at least one thereof, can have a curved profile, even when it is desired to cut along a rectilinear cutting line.
  • parallel projections are intended the parallel projections (orthogonal or oblique) of the descriptive geometry.
  • the blades can be configured in such a manner that the cutting edges are tilted in relation to one another to form an angle, said cross angle, defined by the parallel projections of the cutting edges onto a plane (projection plane) parallel to the lying plane of the flat element to be cut.
  • Another improvable aspect is to be able to maintain cutting pressure as regular and/or uniform as possible during cutting from one side to the other of the width of the flat element. It is further desirable, more in general, that the various features of the cut, such as, for example, the size of the cross angle, are maintained regular and/or uniform during cutting.
  • Document US4476760A discloses a device as in the preamble of claim 1.
  • Each of documents DE102008044465B3 and GB1066536A discloses a device for cutting a flat element which is continuously moving.
  • One object of the invention is to provide a cutting device that is able to improve the known technique for one or more of the aspects indicated above.
  • One advantage is to provide a cutting device that is suitable for cutting transversely a flat element, which advances along an advancing path, to divide this element into distinct portions.
  • One advantage is to reduce wear of the cutting edges, consequently increasing the working life of the cutting device without having to replace the blades.
  • One advantage is to make available a cutting device in which the entire lengths of the cutting edges are worn in a substantially uniform manner.
  • One advantage is to devise a cutting device that is able to provide a rectilinear cut of great precision on a flat element.
  • One advantage is to cut a continuous flat element into in distinct portions by means of a series of cuts, each performed from one side to the other of the width of the elements, with relatively high productivity.
  • One advantage is to give rise to a constructionally simple and cheap cutting device, of the type in which the cutting edges of the blades are tilted with respect to one another, forming a cutting angle, defined by the parallel projections of the cutting edges onto a plane (projection plane) that is normal to the length of the flat element to be cut, and a cross angle, defined by the parallel projections of the cutting edges on the flat element to be cut (projection plane), and in which the blades operate in scissors cutting mode, such that the current cutting zone advances from a side of the flat element to be cut to the opposite side.
  • One advantage is to permit substantially constant cutting quality along the entire extent of the cutting zone, in particular for the cutting line extending along the entire width of the flat element.
  • One advantage is to maintain the cutting pressure as uniform and regulate as possible during the course of cutting from one side to the other of the width of the flat element.
  • One advantage is to maintain constant the width of the cross angle during cutting.
  • a cutting device for transverse cutting of a continuous flat element, for example in the form of a strip.
  • the cutting device 1 is in particular used for cutting a front end portion and separating it from the rest of the continuous element.
  • the cutting device 1 can, in particular, perform a series of transverse cuts to cut, one after the other, various front end portions of the continuous flat element.
  • the cutting device 1 operates, in particular, to perform, each time, a straight cut.
  • the cutting device 1 can be used to cut sheet or strip elements, which are, for example, approximately 20 micrometres to approximately 200 micrometres.
  • the flat element to be cut can be made of composite, metal, plastic, paper or ceramic material, or of still other materials.
  • the cutting device 1 comprises two blades that cooperate together to cut the flat element by superimposing the cutting edges thereof.
  • the two blades are a first blade 2, that in the specific case is an upper blade, and a second blade 3, which in the specific case is a lower blade.
  • the cutting motion may comprise the motion of either of the two blades, or of both the blades.
  • the cutting motion comprises the motion of a single blade that may be, as in this case, the first (upper) blade 2.
  • the other blade which in this case will thus be the second (lower) blade 3 can be stationary with respect to the element to be cut during cutting, in particular for defining with precision a straight cutting line.
  • the other blade in this case the second (lower) blade 3 can be provided, as in the specific example, with the possibility of motion away from or towards the blade (first blade 2) provided with the cutting motion to enable, before cutting, entry of the flat element to be cut that advances between the two blades.
  • Blades 2 and 3 have respectively cutting edges 4 and 5 that are tilted in relation to one another so as to form a cutting angle, considering the parallel projections of the cutting edges 4 and 5 onto a plane (projection plane, in this case vertical) that is normal to the direction (in this case horizontal) of the length of the flat element to be cut and/or to the advancing direction 6 of the element.
  • Figure 5 which lies on the (vertical) plane on which the cutting angle is arranged, makes the reciprocal tilt of the two cutting edges 4 and 5 visible.
  • the second lower cutting edge 5, (which is stationary during cutting with respect to the element to be cut) is arranged horizontally, whilst the first upper cutting edge 4, (which is the specific case is movable vertically with respect to the element to be cut, to generate the cutting motion) is arranged obliquely.
  • the two blades 2 and 3 operate in a cutting mode of the scissors type in which the cutting zone comprises the cross point of the cutting edges 4 and 5, cross point which advances from one side to the opposite side of the element to be cut.
  • the cross point, or cutting zone advances from one side to the other of the width of the flat element to be cut by separating a portion from the element.
  • the two blades 2 and 3 are further configured in such a manner that the cutting edges 4 and 5 thereof are tilted in relation to one another in such a manner as to form a cross angle, defined by considering the parallel projections of the cutting edges 4 and 5 onto a plane (projection plane, in the specific case, horizontal) that is parallel to the lying plane of the flat element to be cut.
  • This cross angle which, as known, improves the efficacy of the scissors type cut, can be, for example, comprised between approximately 0.05 and 3 sexagesimal degrees, or comprised between approximately 0.1 and 0.5 sexagesimal degrees.
  • At least one of, or both the cutting edges 4 and 5 can have a curved or rectilinear profile.
  • both the first (upper) cutting edge 4 and the second (lower) cutting edge 5 are rectilinear.
  • the first blade 2 is carried by a first movable carriage 7 (which is in particular slidable on linear sliding guides) in the direction (vertical or tilted with a vertical motion component) of the cutting motion, in both directions.
  • the second blade 3 is carried by a second carriage 8 that is movable (in particular slidable on linear sliding guides) in the (vertical) direction of moving away from and towards the first blade 2, to enable reciprocal moving away of the blades before cutting in order to facility the entry of the flat element to be cut that advances between the two blades and thus to promote correct positioning of the flat element above the second (lower) blade 3.
  • the first carriage 7 and the second carriage 8 are in turn carried by a main carriage 9 on which the (linear) sliding guides are mounted with which the first and the second carriage are slidably coupled.
  • the main carriage 9 is movable (for example linearly slidable) with reciprocal movement in the advancing direction 6 (horizontal) of the flat element to be cut.
  • the cutting device 1 further comprises one or more gripping members 10 (in the specific case three), for example of the pinch type.
  • Each gripping member 10 is arranged after blades 2 and 3 (with reference to the advancing direction 6 of the element to be cut) to grip the flat element during cutting.
  • the gripping member 10 will be, in particular, arranged alongside one another in the direction of the width of the element to be cut.
  • Each gripping member 10 is configured for gripping the flat element portion that exceeds the blades 2 and 3 and is separated from the rest of the flat element by the blades.
  • Each gripping member 10 may comprise a first (upper) jaw 11 and a second (lower) jaw 11.
  • Each gripping member 10 is provided with at least one elastic element 13 (spring) applied to at least one jaw 11 or 12 to enable an elastic action of gripping the element.
  • Each first (upper) jaw 11 is carried by the first carriage 7, i.e. by the carriage that carries the first (upper) blade 2.
  • Each (lower) second jaw 11 is carried by the second carriage 8, i.e. by the carriage that carries the second (lower) blade 3.
  • the elastic element 13 will be operative on the first jaw 11, i.e. on the jaw associated with the first carriage 7 (that carries the first blade 2) that provides the cutting motion.
  • the (vertical) motion of the first carriage 7, that supplies the cutting motion to the first blade 2 will also supply the gripping motion to each first jaw 11 to enable the jaws of each gripping member 10 to be closed reciprocally.
  • the first blade 2 is fitted to the first carriage 7 with the possibility of performing rotations (of relatively reduced extent) around a pivot or fulcrum 14 with a rotation axis that is substantially perpendicular to the advancing plane or to the lying plane of the flat element to be cut. In the specific case this rotation is vertical.
  • the cutting device 1 comprises an adjusting carriage 15 configured for exerting a force on the first blade 2.
  • the adjusting carriage 15 is configured for generating a rotation moment on the first blade 2 with respect to the aforesaid rotation pivot or fulcrum 14.
  • the adjusting carriage 15 is configured for pushing the first blade 2 against the second blade 3 during the cutting action in which the corresponding cutting edges 4 and 5 are at least partially superimposed on one another.
  • the adjusting carriage 15 is in particular used to maintain the first blade 2 in contact with the second blade 3 in the cutting operating situation, with the cutting edges 4 and 5 superimposed, with a contrasting force or pressure (with a direction that is transverse to the cutting plane/surface along which the first cutting edge 4 is movable) of preset size.
  • This contrasting force or pressure (such as to maintain the cutting edges 4 and 5 in reciprocal contact) can be adjusted during the performance of each single cut, as will be explained better below, in such a manner as to make the cut particularly effective, precise and uniform.
  • the adjusting carriage 15 is, in this example, carried by the main carriage 9 (in other non-illustrated examples it could be carried by the first carriage 7) with the possibility of movement (for example linear sliding) in a (horizontal) adjusting direction 16 that is transverse to the rotation axis of the first blade 2.
  • the adjusting carriage 15 is movable in the adjusting direction 16 in both directions.
  • the adjusting direction 16 may be, in particular, parallel to the advancing plane or to the lying plane of the flat element to be cut, and/or parallel to the advancing direction 6.
  • the adjusting carriage 15 is configured in such a manner as to exert a force on the first blade 2 that is able to give rise to a rotation moment applied to the first blade 2 according to at least a first rotation direction.
  • the adjusting carriage 15 may be, for example, connected to the first blade 2 in such a manner that the carriage 15, by moving in a first direction 16a of the adjusting direction 16, generates a rotation moment for rotating the first blade 2 in the first rotation direction, such that the first blade 2 contrasts the second blade 3 with a desired contrasting force or pressure.
  • the adjusting carriage 15 can move in a second direction of the adjusting direction 16, opposite the first, to enable the first blade 2 to release or decrease the contrasting force or pressure on the second blade 3, by rotating in a second rotation direction opposite the first rotation direction 16a.
  • the adjusting carriage 15 will be driven in such a manner that the contrasting force or pressure between the first blade 2 and the second blade 3 (in the course of the cutting step in which the cutting edges 4 and 5 of the two blades 2 and 3 are superimposed) follows a desired course (for example remains almost constant) in the course of each single cut.
  • a desired course for example remains almost constant
  • the adjusting carriage 15 is guided in such a manner as to exert a given thrust force on the first blade 2 in order that the contrasting force or pressure between blades 2 and 3 is, instant by instant, the desired one.
  • the adjusting carriage 15 is guided in such a manner as to increase gradually the thrust force on the first blade 2 so that the contrasting force or pressure between blades 2 and 3 is constant during performance of cutting for the entire cutting line, i.e. over the entire width of the cut element.
  • the adjusting carriage 15 will be moved (as will be explained better below in the present description) according to a preset motion law in such a manner as to obtain the desired variation in the thrust force on the first blade 2.
  • the reciprocating movement (backwards and forwards) of the main carriage 9 is guided by a cam guiding system that comprises a motor shaft 17 rotated by a motor 18 (for example of the brushless type), at least one cam member 19 rotated by the motor shaft 17 and at least a first cam follower member 20 connected to the main carriage 9.
  • the cam member 19 (driving member) can have at least a first cam profile 21, for example of the track type.
  • the first cam follower member 20 (driven member) of the main carriage 9 may comprise, as in the specific example, a first roller coupled with the first cam profile 21.
  • the cam guiding system may be configured in such a manner that a cycle of the reciprocating movement of the main carriage 9 (i.e. a forward and return stroke) corresponds to each revolution of the motor shaft 17.
  • the cutting motion of the first carriage 7 may be guided by the aforesaid cam guiding system.
  • the reciprocating opening and closing motion of the second carriage 8 (to move from the upper or closed cutting configuration of the second blade 3 to the lower or open configuration ready for the entry of the element to be cut) may be guided by the aforesaid cam guiding system.
  • the cam member 19 (driving member) may have, as in the specific example, a second cam profile 22 coupled with a second cam-follower member 23 (driven member) connected to the first carriage 7 and to the second carriage 8.
  • the second cam-follower member 23, which is thus operationally associated with both the first 7 and second 8 carriages, may comprise a second roller coupled with the second cam profile 22.
  • the second cam-follower member 23 is carried by a further cam member 24 that is commanded (through the effect of the coupling between the second cam-follower member 23 and the second cam profile 22) to perform a set oscillating motion.
  • the further cam member 24 may comprise, as in the specific case, a plate body (that is, for example, rectangular in shape).
  • the further cam member 24 has a third cam profile 25 (for example of the track type), operationally associated with the first carriage 7, and a fourth cam profile 26 (for example of the track type), operationally associated with the second carriage 8.
  • the first carriage 7 carries a third cam-follower member 27 coupled with the third cam profile 25 such that the reciprocating movement of the first carriage 7, which supplies the cutting motion to the first (upper) blade 2 and the gripping motion of the first (upper) jaws 11, is driven by the oscillation motion of the further cam member 24.
  • the third cam-follower member 27 may comprise, for example, a roller coupled with a corresponding track cam.
  • the second carriage 8 carries a fourth cam-follower member 28 coupled with the fourth cam profile 26 in such a manner that the reciprocating movement of the second carriage 8, which supplies opening and closing motion to the second (lower) blade 3 and to the second (lower) jaws 12, is guided by the oscillating motion of the further cam member 24.
  • the fourth cam-follower member 28 may comprise, for example, a roller coupled with a corresponding track cam.
  • the motion of the blades 2 and 3 and of the jaws 11 and 12 is thus guided (by means of the third cam profile 25 and the fourth cam profile 26) by the motion of the further cam member 24, which is in turn guided (by means of the second cam profile 22) by the motion of the cam member 19.
  • the cam member 19 has a fifth cam profile 29 operationally associated with the adjusting carriage 15 to command the movements of the carriage, such as to vary the force exerted by the carriage on the first blade 2 (generating a rotation moment applied to the first blade 2 around the rotation pivot or fulcrum 14).
  • the adjusting carriage 15 carries a fifth cam-follower member 30 coupled with the fifth cam profile 29 such that the motion of the adjusting carriage 15, which generates the rotation moment applied to the first blade 2 to enable the contrasting force or pressure between blades 2 and 3 to be varied, is guided by the rotary motion of the cam member 19.
  • the fifth cam profile 29 may be shaped in such a manner that the thrust of the adjusting carriage 15 on the first blade 2 is varied, from the start to the end of the actual cutting step, such that the contrasting force or pressure between blades 2 and 3 remains substantially constant.
  • the adjusting carriage 15 has a bridge element 31 configured for transmitting the force from the adjusting carriage 15 to a blade-holding arm 32 that holds the first blade 2.
  • the bridge element 31 is connected to the blade-holding arm 32 by means of elastic means that may comprise, as in this case, one or more belleville washers 33 (with relatively great stiffness).
  • elastic means may comprise, as in this case, one or more belleville washers 33 (with relatively great stiffness).
  • belleville washers 33 enables a very stiff elastic connection to be provided that can reduce the risk of system resonance.
  • cam profiles 21, 22 and the fifth 29 that drive three movable elements (respectively, the first carriage 7, the second carriage 8 and the adjusting carriage 15) and which are carried by a single rotating organ (the cam member 19). It is possible to provide other embodiments in which the aforesaid three cam profiles 21, 22 and 29 are carried by two or three distinct rotating members (of the cam type) that may be driven by a single motor.
  • the cutting device 1 may be combined with a supplying device (of known and not illustrated type) that conveys, with a continuous advancing motion, the flat element to be cut to supply the latter to the work unit formed by the blades 2 and 3 and by the gripping member 10.
  • the cutting device 1 may be further combined with an evacuating device (of known and not illustrated type) that removes from the cutting device 1 the cut portions of material separated from the flat element.
  • the first carriage 7 is movable on the main carriage 9 in a movement direction that can be tilted (as in the embodiment of figures 15 to 18 ) with a preset angle of tilt with respect to the second cutting edge 5 and/or with respect to the lying plane of the flat element to be cut.
  • this angle of tilt can be formed by the movement direction of the first carriage 7 and by a line that is normal to the lying plane of the flat element to be cut and can have a value comprises between 1 and 20 sexagesimal degrees, or more specifically between 2 and 12 sexagesimal degrees, for example about 8 - 9 degrees.
  • the first carriage 7 in the case in point is slidable on linear guides with a sliding axis that is tilted according to the aforesaid angle of tilt.
  • This angle of tilt is chosen in such a manner that the cross angle between the edges 4 and 5 remains substantially constant at a desired value. It has in fact been seen that by tilting the movement direction of the first blade 2 with respect to the flat element to be cut, the cross angle can be maintained almost constant from the start to the end of the cutting step, i.e. for the entire length of the cutting line.
  • the direction of the cutting motion (in this case the cutting motion is supplied by the motion of the first blade 2) is tilted with respect to the second cutting edge 5 and/or with respect to the lying plane of the flat element to be cut, i.e. is not perpendicular to the edge 5 and/or to the flat element.
  • the direction of the cutting motion will be tilted forwards with respect to the fixed cutting edge, such that the fulcrum 14 of the movable blade during cutting (whilst the cutting edges become gradually more superimposed) has a motion component directed to the outside of the cutting line, always maintaining an operative contact point of the cutting edges in which cutting occurs, a contact point that advances gradually from one side to the other of the width of the flat element.
  • the (horizontal) motion component in particular, directed to the outside of the movable blade, and in particular of the fulcrum 14 of the blade, will ensure that the cross angle remains constant.
  • the embodiment of figures 15 to 18 differs from that of figures 1 to 14 essentially through the fact that the carriage that supplies the cutting motion (first carriage 7) is movable (with reciprocating movement) in a cutting direction that is not only transverse to the flat element, but is also tilted with respect to a plane that is orthogonal to the flat element, in order to maintain constant the cross angle during cutting of the flat element.
  • This cutting direction is tilted in such a manner that, during cutting, in the transition from the open to the closed configuration, there is at least one component of the motion of the first carriage 7 that is directed in the advancing direction 6.
  • the cutting motion may comprise a linear sliding motion.
  • This tilted cutting motion of a blade (first blade 2) may comprise, in an embodiment that is not shown, a route that is at least partially non-linear (curvilinear), in particular, if one or both the cutting edges are not rectilinear.
  • the jaw/s 11 carried by the first carriage 7 can be provided with motion with a tilted direction and can be further mounted elastically to avoid dragging on the flat element.
  • the motor shaft 17 rotates the cam member 19.
  • the main carriage 9 is thus guided in reciprocating backward and forward movement in a direction that is parallel to the advancing direction 6 and in a manner that is coordinated with the advance of the element to be cut.
  • the oscillating movement of the further cam member 24 is guided in such a manner as to guide, in turn, via the third cam profile 25 and the fourth cam profile 26, the reciprocating movement of the first carriage 7 and the reciprocating movement of the second carriage 8.
  • the first carriage 7, like the second carriage 8, are thus moved both in the (horizontal) advancing direction of the element to be cut (both being mounted on the main carriage 9), and in the (vertical or tilted) opening and closing direction (being guided by the cam guiding system), in such a manner that the flat element is cut as it advances continuously.
  • the cut is made during the forward stroke of the main carriage 9.
  • Blades 2 and 3 take on at least one closed configuration, in which the cutting edges 4 and 5 are superimposed on one another to perform the cut, and at least one open configuration, in which the cutting edges 4 and 5 are spaced apart from one another in the cutting direction, defining a passing opening 34 that enables the (continuously advancing) flat element to be cut to enter between the cutting edges 4 and 5.
  • the passage opening 34 is narrowed and elongated in the direction of the width of the flat element to be cut, i.e. in a direction that is transverse to the cutting direction and to the advancing direction 6.
  • Blades 2 and 3 move from the open to the closed configuration in such a manner that the point or cutting zone, defined by the cross point of the cutting edges 4 and 5, moves along the cutting line from one side to the other of the flat element.
  • the relative movement between the cutting members (the two blades 2 and 3) and the element to be cut is thus substantially reduced during cutting only to the (vertical) cutting motion and to the possible adjusting motion of the cross angle (i.e. the tilted motion of the first blade 2).
  • the relative movement between the cutting members (the two blades 2 and 3) and the element to be cut in the advancing direction 6, whilst the cut is being made, is substantially nil (apart from the possible motion component due to the tilt of the motion of the first blade 2), inasmuch the cutting members are moved forwards in a manner coordinated with the advance of the flat element.
  • the gripping members 10 grip the front end of the flat element that advances during the forward stroke of the main carriage 9. Whilst the flat element is held by the gripping members 10, the latter are moved forwards in such a manner as not to have a dragging motion with respect to the gripped element.
  • the fifth cam profile 29 guides the adjusting carriage 15 according to a preset law in such a manner as to control the rotation moment applied to the first blade 2 as the cross point (or cutting point) advances from one side to another of the width of the flat element.
  • this is achieved by movement (controlled by the fifth cam profile 29) of the adjusting carriage 15 that causes slight rotations of the first blade 2 (or of the blade-holding arm 32) around the rotation pivot or fulcrum 14.
  • This movement is controlled in such a manner that the front contrasting force between the blades 2 and 3 is constant along the entire cutting line, so that the cutting quality will be uniform.
  • the cross angle between the edges 4 and 5 (in particular, the cross angle will have, instantaneously, the vertex in the cross point of the cutting edges 4 and 5 and will be formed by the parallel projections of the cutting edges 4 and 5 onto a plane (projection plane) that is parallel to the lying plane, or advancing plane, of the flat element to be cut) will be further maintained substantially constant form the start to the end of the cutting step by the effect of the tilt of the cutting motion. It has been seen that the constancy of the cross angle contributes to obtaining a cut of uniform quality on the entire cutting line.
  • the cross point of the cutting edges 4 and 5, or cutting point i.e.
  • the point in which cutting of the flat element is occurring instantaneously and which substantially forms the instantaneous vertex of the cross angle moves laterally in the direction of the width of the flat element from one side to the other of the latter, the first blade 2, whilst it is lowered, performs a tilted movement with respect to the vertical so that the cross angle remains almost constant substantially for the entire side movement of the cross point.
  • the blades 2, 3 and the jaws 11, 12 open, for example just before the end of the forward stroke of the main carriage 9, then the blades 2, 3 and the jaws 11, 12 perform the return stroke to the open position, then resume the subsequent forward stroke to cut a new portion of the flat element that, in the meantime, has continued to advance.
  • the cutting device 1 may comprise, as in the illustrated examples, a clearance recovery carriage 35 that is slidable (for example on linear guides) on the adjusting carriage 15 and is maintained pressed against the blade-holding arm 32 by the elastic means (belleville washers 33).
  • the bridge element 31 may, as in this case, bridge the clearance recovery carriage 35.

Landscapes

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

Claims (15)

  1. Dispositif pour couper un élément plat, qui avance dans une direction d'avance (6), avec une ligne de coupe qui est transversale à la direction d'avance (6), ledit dispositif de coupe (1) comprenant :
    - une première lame (2) et une seconde lame (3) ayant, respectivement, un premier tranchant (4) et un second tranchant (5) s'étendant en longueur transversalement à la direction d'avance (6), lesdites première et seconde lames (2 ; 3) coopérant ensemble pour couper l'élément plat avec la possibilité de prendre une configuration ouverte, dans laquelle lesdits premier et second tranchants (4 ; 5) sont espacés l'un de l'autre, définissant une ouverture de passage (34) pour insérer l'élément plat à couper, et une configuration de coupe fermée, dans laquelle les premier et second tranchants (4 ; 5) sont superposés l'un à l'autre ; lesdites première et seconde lames (2 ; 3) étant configurées de manière à définir une zone de coupe qui comprend un point de croisement entre lesdits premier et second tranchants (4 ; 5) qui, pendant la coupe, dans la transition de la configuration ouverte à fermée, se déplace d'un côté de l'élément plat au côté opposé ;
    - des moyens de déplacement (7 ; 8 ; 9) pour fournir un mouvement de coupe à ladite première lame (2) et/ou à ladite seconde lame (3) de la transition entre lesdites configurations ouverte et fermée, lesdits moyens de déplacement comprenant un premier chariot (7) qui supporte ladite première lame (2) et est mobile avec un mouvement alternatif dans une direction de coupe qui est transversale à l'élément plat ;
    caractérisé en ce que ladite direction de coupe est inclinée par rapport à un plan qui est orthogonal à l'élément plat.
  2. Dispositif selon la revendication 1, dans lequel lesdites première et seconde lames (2 ; 3) sont configurées de telle manière à définir, pendant une coupe, un angle de croisement, ledit angle de croisement étant défini par des projections parallèles desdits premier et second tranchants (4 ; 5) sur un plan de protection défini par l'élément plat à couper, ladite direction de coupe étant inclinée de telle manière à maintenir ledit angle de croisement constant pendant la coupe de l'élément plat.
  3. Dispositif selon la revendication 1 ou 2, dans lequel ladite direction de coupe est inclinée de telle manière que, pendant une coupe, dans la transition de la configuration ouverte à la configuration fermée, il y a au moins une composante de mouvement dudit premier chariot (7) qui est dirigée dans ladite direction d'avance (6).
  4. Dispositif selon l'une quelconque des revendications précédentes, dans lequel ledit mouvement de coupe comprend un mouvement linéaire.
  5. Dispositif selon la revendication 4, comprenant un chariot principal (9) qui supporte ledit premier chariot (7) de manière coulissante, ledit chariot principal (9) étant mobile avec un mouvement alternatif dans la direction d'avance (6) avec une course avant et une course arrière de telle manière qu'il soit coordonné avec l'avance de l'élément plat à couper, en sorte que ladite première lame (2) et ladite seconde lame (3) prennent la configuration fermée dans au moins une partie de la course avant et la configuration ouverte dans la course arrière.
  6. Dispositif selon l'une quelconque des revendications précédentes, comprenant des moyens de poussée (15) pour exercer une poussée sur ladite première lame (2) et/ou sur ladite second lame (3) de telle manière à maintenir, pendant une coupe, lesdits premier et second tranchants (4 ; 5) l'un contre l'autre avec une force opposée.
  7. Dispositif selon la revendication 6, comprenant des moyens de commande (17 ; 19 ; 29 ; 30) configurés pour commander lesdits moyens de poussée (15) de manière à faire varier l'entité de ladite poussée pendant une coupe.
  8. Dispositif selon la revendication 7, dans lequel ladite première lame (2) pivote sur ledit premier chariot (7) par un pivot ou un point d'appui (14) autour d'un axe de rotation, lesdits moyens de poussée comprenant un chariot de réglage (15) qui est mobile dans une direction de réglage (16) et configuré de telle manière que ladite poussée génère sur ladite première lame (2) un moment de rotation par rapport audit axe de rotation, lesdits moyens de commande étant configurés pour commander des mouvements dudit chariot de réglage (15).
  9. Dispositif selon la revendication 7, dans lequel lesdites première et seconde lames (2 ; 3) sont configurées pour réaliser une rotation alternative autour d'un axe de rotation qui est transversal à la direction d'avance (6) et auxdits premier et second tranchants (4 ; 5), lesdits moyens de poussée étant configurés de telle manière que ladite poussée génère sur ladite première lame (2) et/ou sur ladite seconde lame (3) un moment de rotation par rapport audit axe de rotation ; lesdites première et seconde lames (2 ; 3) étant configurées de telle manière à définir, pendant une coupe, un angle de croisement, ledit angle de croisement étant défini par des projections parallèles desdits premier et second tranchants (4 ; 5) sur un plan de projection défini par l'élément plat à couper ; lesdits moyens de commande (17 ; 19 ; 29 ; 30) étant configurés pour commander lesdits moyens de poussée (15) de manière à maintenir ledit angle de croisement constant.
  10. Dispositif selon l'une quelconque des revendications 7 à 9, dans lequel lesdits moyens de commande comprennent un arbre d'entraînement (17) et un système d'entraînement par came interposé de manière opérationnelle entre ledit arbre d'entraînement (17) et lesdits moyens de poussée.
  11. Dispositif selon la revendication 10, dans lequel ledit système d'entraînement par came comprend un organe de came (19) mis en rotation par ledit arbre d'entraînement (17), ledit organe de came (19) ayant, en particulier, au moins un cinquième profil de came (29) couplé à un cinquième organe suiveur de came (30) relié auxdits moyens de poussée pour entraîner une rotation d'une lame par rapport à l'autre ; lesdits moyens de poussée comprenant, en particulier, un chariot de réglage (15) qui est mobile dans une direction de réglage (16) entraîné par ledit cinquième organe suiveur de came (30) et configuré pour pousser ladite première lame (2) ; ledit organe de came (19) ayant, en particulier, au moins un deuxième profil de came (22) couplé à un deuxième organe suiveur de came (23) qui est à son tour relié audit premier chariot (7) pour entraîner le mouvement alternatif de celui-ci dans la direction de coupe ; ledit deuxième organe suiveur de came (23) étant, en particulier, relié audit premier chariot (7) par un organe de came supplémentaire (24) ayant un troisième profil de came (25) relié à un troisième organe suiveur de came (27) qui est à son tour relié audit premier chariot (7) ; lesdits moyens de déplacement comprenant, en particulier, un second chariot (8) qui supporte ladite seconde lame (3) et est mobile avec un mouvement alternatif dans une direction de déplacement qui est transversale à la direction d'avance (6) et à l'élément plat, ledit organe de came supplémentaire (24) ayant, en particulier, un quatrième profil de came (26) relié à un quatrième organe suiveur de came (28) qui est à son tour relié au second chariot (8) pour entraîner le mouvement alternatif de celui-ci.
  12. Dispositif selon la revendication 11, dans lequel lesdits moyens de déplacement comprennent un chariot principal (9) qui supporte ledit premier chariot (7) et est mobile avec un mouvement alternatif dans la direction d'avance (6) d'une manière qui est coordonnée avec l'avance de l'élément plat à couper, ledit organe de came (19) ayant au moins un premier profil de came (21) couplé à un premier organe suiveur de came (20) relié audit chariot principal (9) pour entraîner le mouvement alternatif de celui-ci.
  13. Dispositif selon l'une quelconque des revendications 6 à 12, dans lequel lesdits moyens de poussée comprennent un chariot de réglage (15) qui est mobile dans une direction de réglage (16) et est configuré pour pousser ladite première lame (2) ; des moyens élastiques (33) étant associés de manière opérationnelle audit chariot de réglage (16) pour transmettre ladite poussée à ladite première lame (2).
  14. Dispositif selon l'une quelconque des revendications précédentes, dans lequel lesdits moyens de déplacement comprennent un chariot principal (9) qui supporte ledit chariot (7) et est mobile avec un mouvement alternatif dans la direction d'avance (6) d'une manière qui est coordonnée avec l'avancée de l'élément plat à couper, lesdites première et seconde lames (2 ; 3) prenant la configuration fermée dans au moins une partie d'une course avant du chariot principal (9) et la configuration ouverte dans une course arrière du chariot principal.
  15. Dispositif selon l'une quelconque des revendications précédentes, dans lequel lesdits moyens de déplacement comprennent un second chariot (8) qui supporte ladite seconde lame (3) et est mobile avec un mouvement alternatif dans une direction de mouvement qui est transversale à la direction d'avance (6) et à l'élément plat.
EP11813418.8A 2010-12-24 2011-12-21 Dispositif de coupe Not-in-force EP2655022B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ITMO2010A000366A IT1403342B1 (it) 2010-12-24 2010-12-24 Dispositivo di taglio
ITMO2010A000364A IT1403341B1 (it) 2010-12-24 2010-12-24 Dispositivo di taglio
PCT/IB2011/055871 WO2012085866A2 (fr) 2010-12-24 2011-12-21 Dispositif de coupe

Publications (2)

Publication Number Publication Date
EP2655022A2 EP2655022A2 (fr) 2013-10-30
EP2655022B1 true EP2655022B1 (fr) 2019-02-13

Family

ID=45531478

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Application Number Title Priority Date Filing Date
EP11813418.8A Not-in-force EP2655022B1 (fr) 2010-12-24 2011-12-21 Dispositif de coupe

Country Status (2)

Country Link
EP (1) EP2655022B1 (fr)
WO (1) WO2012085866A2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBO20120660A1 (it) * 2012-12-05 2014-06-06 Ghelfi 1905 S R L Apparecchiatura di taglio continuo di un materiale, in particolare cartaceo, alimentato sotto forma di foglio o di nastro
ITMO20130310A1 (it) * 2013-11-11 2015-05-12 Kemet Electronics Italia S R L Gruppo operatore
KR102380953B1 (ko) * 2015-05-08 2022-03-31 만츠 이태리 에스.알.엘. 작동 유닛
IT201800009592A1 (it) * 2018-10-18 2020-04-18 Sovema Group Spa Macchina per il taglio di un nastro continuo di piastre di accumulatori elettrici al litio e metodo di funzionamento di detta macchina
IT202100015245A1 (it) * 2021-06-10 2022-12-10 Manz Italy Srl Macchina automatica per la produzione di dispositivi di accumulo di energia elettrica a partire da almeno un nastro di materiale e gruppo di trasmissione di moto

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Publication number Priority date Publication date Assignee Title
DE1241253B (de) * 1965-01-12 1967-05-24 Agfa Gevaert Ag Obermesser eines Querschneiders
JPS5380089A (en) * 1976-12-23 1978-07-15 Fuji Photo Film Co Ltd Cutting apparatus for web
US4476760A (en) * 1983-02-18 1984-10-16 Joseph Galkin Corporation Cutting system
DE102008044465B3 (de) * 2008-08-26 2010-04-15 Deckert Maschinenbau Gmbh Profilschneider und Steuerungsverfahren dazu

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Also Published As

Publication number Publication date
EP2655022A2 (fr) 2013-10-30
WO2012085866A3 (fr) 2012-08-30
WO2012085866A2 (fr) 2012-06-28

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