EP3262201B1 - Procédé de production de motifs sur du cuir et machine à découper le cuir associée - Google Patents

Procédé de production de motifs sur du cuir et machine à découper le cuir associée Download PDF

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Publication number
EP3262201B1
EP3262201B1 EP16715880.7A EP16715880A EP3262201B1 EP 3262201 B1 EP3262201 B1 EP 3262201B1 EP 16715880 A EP16715880 A EP 16715880A EP 3262201 B1 EP3262201 B1 EP 3262201B1
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EP
European Patent Office
Prior art keywords
tool
abutment
tool holder
holder head
punching machine
Prior art date
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Active
Application number
EP16715880.7A
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German (de)
English (en)
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EP3262201A1 (fr
Inventor
Federico PASQUALETTI
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.)
Aeffe Machinery Srl
Original Assignee
Aeffe Machinery Srl
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Publication date
Application filed by Aeffe Machinery Srl filed Critical Aeffe Machinery Srl
Publication of EP3262201A1 publication Critical patent/EP3262201A1/fr
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B1/00—Manufacture of leather; Machines or devices therefor
    • C14B1/44—Mechanical treatment of leather surfaces
    • C14B1/56—Ornamenting, producing designs, embossing
    • 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
    • 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
    • B26D7/06—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form
    • B26D7/0625—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form by endless conveyors, e.g. belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/40—Cutting-out; Stamping-out using a press, e.g. of the ram type
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B17/00—Details of apparatus or machines for manufacturing or treating skins, hides, leather, or furs
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B17/00—Details of apparatus or machines for manufacturing or treating skins, hides, leather, or furs
    • C14B17/04—Work-supports or other counter-pressing elements; Bed rolls or counter-pressing rolls
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B17/00—Details of apparatus or machines for manufacturing or treating skins, hides, leather, or furs
    • C14B17/10—Arrangements for driving parts of leather-working machines
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B5/00—Clicking, perforating, or cutting leather

Definitions

  • the present invention relates to a continuous automatic punching machine for the processing of leather pieces or similar sheet materials, in which a conveyor belt on which is lying a sheet material to be processed, passes through a machine processing section in which it passes over an abutment plate above which a processing crosspiece providing at its lower end a tool assembly moves with a reciprocating motion, said tool assembly including at least one tool holder head comprising an elongated tool-carrying bar provided with a plurality of tools arranged to protrude from said tool-carrying bar.
  • the invention also relates to a tool assembly associable to a continuous automatic punching machine as outlined above.
  • the invention also concerns a method for producing ornamental motifs on leather or similar sheet or tape material by an automatic punching machine as outlined above.
  • Said conventional machines generically named continuous automatic punching machines basically comprise: two uprights; a processing crosspiece mounted on the uprights in a vertically sliding mode; a tool holder head fixed to the bottom side of the processing crosspiece so that from the lower end of the processing crosspiece the work tools protrude downwards; drive members of said processing crosspiece to cause a vertical movement of the upper crosspiece with respect to the uprights so to produce a reciprocating up and down of the processing crosspiece which constitutes the working movement of the tool holder head; a workpiece support assembly usually mounted on a fixed lower crosspiece comprising a fixed horizontal abutment plane arranged substantially on the vertical of the tool holder head; means for adjusting the work depth suitable to set the vertical position of the horizontal abutment plane to adjust the work depth corresponding to the distance between the working surface of the tools of the tool-holder head and the horizontal abutment plane when the tool holder head is placed in a lower end position; a conveyor assembly comprising a conveyor belt which unwinds from a first roller with a horizontal
  • the sheet materials to be worked are laid on the conveyor belt in the unwound configuration at the input side of the machine, then they are dragged by the advancement of the conveyor belt through the working section and then they exit the machine, still in consequence of the conveyor belt's advancement, at the output side of the machine before the conveyor belt is rewound on the second roller.
  • the tools move perpendicularly with respect to the abutment plane on which the conveyor belt runs thanks to the reciprocating vertical movement of the tool holder heads so that the tool in its downwards stroke is able to interact with the sheet material to perform the planned processing of cutting, punching, impressing or the like, which mainly depends on the geometry of the tool and the machining depth set.
  • the tool-holder head for a conventional machine is set up to play side by side one another for the whole length of the tool-holder head itself (cross direction of the machine) some specimens of the repetitive decorative motif in which each specimen is the one represented in figure 9 , and to each dot of fig. 9 corresponds a punching tool expected in the tool-holder head.
  • the repetitive decorative motif shown in FIG. 9 is achieved as the result of just one stroke, then, during the return stroke of the processing crosspiece the conveyor belt is moved forwards in the direction of the pitch A between two repetitive decorative motifs.
  • the object of the present invention is to propose a tool assembly for a continuous automatic punching machine that allows to considerably increasing the machine's versatility.
  • Another object of the present invention is to propose a tool assembly for continuous automatic punching machine that allows doubling the productivity of the machine.
  • Another object of the present invention is to propose a tool assembly for continuous automatic punching machines suitable especially for the execution of specimens.
  • Another object of the present invention is to propose a continuous automatic punching machine able to produce many different types of repetitive decorative motifs without needing to replace the tool-holder head.
  • Another object of the present invention is to propose a continuous automatic punching machine thanks to which it is possible halving the timing to placement of two different lots.
  • Another object of the present invention is to propose a continuous automatic punching machine provided with at least two tool-holder heads connected integrally to the same processing crosspiece but that can be operated independently of each other.
  • Another object of the present invention is to propose a continuous automatic punching machine provided with an optimized workpiece support assembly.
  • Another object of the present invention is to propose a method for the production of ornamental motifs on leather or similar material in sheets or tape by means of a continuous automatic punching machine, which allows considerably simplifying and speeding up the setting of the working programs for this type of machines.
  • a further object of the present invention is to propose a method for the production of ornamental motifs of leather or similar material in sheets or tape by means of a continuous automatic punching machine able to take full advantage from the peculiarities and the versatility of a new concept continuous automatic punching machine.
  • a conveyor belt on which is laid a sheet of material to be processed, passes through a machine processing section in which it passes over an abutment plate above which a processing crosspiece providing at its lower end a tool assembly moves with a reciprocating motion.
  • a continuous automatic punching machine of the type suitable to perform operations of punching, die-cutting, cutting, engraving, holing or the like on the leather pieces or similar sheet materials, comprising at least two uprights, a processing crosspiece mounted on said at least two uprights in sliding mode which is inferiorly integral with a tool assembly comprising a tool-holder head, drive members of said processing crosspiece to cause its sliding with respect to said uprights so as to make them perform a reciprocating movement which is a work movement of said tool assembly in a work direction, a workpiece support assembly positioned below said tool assembly and comprising an abutment plane, a conveyor assembly comprising a conveyor belt arranged to pass in a unwound configuration above said abutment plane a processing section of said continuous automatic punching machine between the tool assembly and the abutment plane, according to the said feed direction, with a leather piece (P) or similar sheet material to be processed that is supplied to said processing section lying on said conveyor belt according to the feed direction.
  • the above-mentioned continuous automatic punching machines comprises a tool assembly that includes a tool-holder head comprising an elongated tool-carrying bar provided with one or more tools arranged to protrude from said tool-carrying bar towards the abutment plane.
  • the tool assembly comprises at least a first and a second tool holder heads arranged consecutively with the same orientation, each of them providing a tool-carrying bar coupled to the tool assembly for sliding in a elongation direction (cross direction of the punching machine) of the corresponding tool-carrying bar, and further comprises cross direction drive means associated with each tool-holder head, adapted to perform sliding in the said cross direction of each tool-holder head, independently from each other.
  • Each of the two tool-holder heads is very versatile due to the controlled movement in cross direction. Thanks to the cross direction movement, each tool-holder head is able to mount a reduced number of tools that can be moved transversely so to be able to process any pitch between the first and the last tool of the tool-carrying bar. Furthermore, the presence of two independent tool holder heads allows doubling the productivity compared to a similar machine equipped with a single tool-holder head.
  • the first and the second tool-holder head are arranged side by side and aligned one after the other in the feed direction of the conveyor belt.
  • the tool assembly comprises a support frame provided with removable connection means adapted to allow anchoring of said tool assembly to the processing crosspiece, and further provided with at least a first and a second guide rails parallel to each other, each tool holder head being associated with a respective guide rail through a corresponding slide member.
  • each tool-holder head comprises an elongated frame in which a work side can be identified in which are formed a coupling seat for the tool-carrying bar and housing seats for a piece holder member comprising a sheet-pressing plate and elastic connection means adapted to be inserted into said housings for connecting said sheet-pressing plate with said elongated frame in sliding mode in a direction perpendicular to the plane of said sheet-pressing plate and with an elastic action such as to maintain a maximum distance between said sheet-pressing plate and said elongated frame.
  • the abutment plane comprises at least one first movable abutment member and at least a second movable abutment member each of them being movable in the direction of the feed direction, independently of one another, between an abutment position in which the movable abutment member is positioned to intercept tools of a respective tool holder head and a disengagement position in which the movable abutment member is positioned to not interfere with the stroke of the tools; and abutment member drive means suitable to actuate, independently of each other, the movable abutment members to move from the abutment position to the disengagement position and vice versa.
  • the continuous automatic punching machine outlined above comprises two tool holder heads associated with the same processing crosspiece and then integrally movable in the work direction. Although they are integral, the two tool holder heads are able to operate selectively thanks to the presence of corresponding movable abutment members of the abutment plane which, independently of each other, can be placed in a position in which the constitute an effective abutment plane for the head tool holder, and then allow it to work, and a disengagement position in which the tool holder head in its working stroke does not find a match, and then deforms the conveyor belt without the counter-action necessary to determine the processing of the sheet material to be processed.
  • the continuous automatic punching machine comprises computer numerical control means capable of controlling independently but in a coordinated manner, in order to perform a given punching program, the feeding movement of the conveyor belt in the feed direction, the selective displacement in the abutment position and in the disengagement position of the first movable abutment member, the selective displacement in the abutment position and in the disengagement position of the second movable abutment member, in a time-phased relation with the movement of the processing crosspiece in the work direction.
  • each tool holder head moves integral to the other in the working direction, it is selectable the tool holder head which have to work at any given moment of processing thus allowing considerable advantages concerning the versatility of the machine, its productivity, the placing times and still others.
  • the method is applied to a continuous automatic punching machine of the type suitable to perform operations of punching, die cutting, slitting, cutting, holing, or the like, comprising
  • the method of the invention comprises:
  • the above outlined method allows in an extremely simple and intuitive way to implement a work program for a continuous automatic punching machine, simply by reproducing on an electronic medium by means of an assisted drawing program the repetitive motif to realize.
  • the realization of said drawing occurs in a rectangular drawing area defined in said graphical user interface, said rectangular drawing area having a horizontal dimension corresponding to a distance in the cross direction between two consecutive specimens of said repetitive decorative motif and a vertical dimension equal to the pitch in the feed direction between two consecutive specimens of said repetitive decorative motif, said drawing being obtained by drawing in said rectangular drawing area a plurality of signs corresponding to points of the surface of the sheet material to be processed where a tool of said machine has to act.
  • the tool holder heads are arranged consecutively with the same orientation, each of them provided into said tool assembly for sliding in a cross direction (elongation direction of said tool-carrying bars), and by comprising cross direction drive means associated with each of said first and second tool holder heads adapted to drive the slide movement in said cross direction of each of said tool holder head, independently from one another;
  • the abutment plane comprises: at least one first movable abutment member and at least a second movable abutment member each of said first and second movable abutment members being movable in said feed direction, independently of one another, between an abutment position in which said movable abutment member is positioned to intercept tools of a respective tool holder head and a disengagement position in which said movable abutment member is positioned to not interfere with the stroke of tools of a respective tool holder head; and abutment member drive means suitable to actuate, independently of each other, said movable abutment members
  • Figs. 1 to 3 it is shown as whole with 10 a continuous automatic punching machine for leather or similar material in sheets, and in particular suitable to execute operations of punching, die-cutting, cutting, engraving, holing or the like.
  • a processing crosspiece 30 is connected to the side uprights 12, 13 to slide vertically with respect to these by means of sliding guides, 31, being interposed between the upper fixed cross member 15 and the workpiece support assembly 200. Furthermore, the processing crosspiece passes through openings, 39, in the side uprights 12, 13 so to protrude outward from them. End members of the crosspiece 38 extend vertically to connect the processing crosspiece 30 to the drive members, 40, adapted to perform the reciprocating movement of the processing crosspiece 30 that constitutes the working movement in a work direction, Z.
  • the drive members 40 comprise two thrust crank mechanisms placed externally to the side uprights 12, 13 where respective piston rods, 42, are each one pivotably jointed at one end to a corresponding end member of the crosspiece 38, and at the other end are eccentrically mounted to a rotatable shaft, 43, whose rotation is caused by an engine, 41.
  • first, 150a, and a second tool holder head, 150b are slidably connected a first, 150a, and a second tool holder head, 150b, each of which is associated with a guide rail 112a, 112b through corresponding slide members, 151a, 151b .
  • the first 150a and second tool holder head 150b are arranged consecutively to each other in a feed direction, Y, and with a same spatial orientation, in particular in the embodiment represented the first 150a and second 150b tool holder head are aligned side by side to the same level in the work direction Z shown in Fig. 5 by a bidirectional vertical arrow.
  • Each tool holder head comprises an elongated frame, 154a, 154b, which provides on one side connections means to respective slide member 151a, 151b while at a lower side it supports, preferably in a removable mode, a respective elongated tool-carrying bar, 152a, 152b, provided with one or more tools, 153a, 153b, arranged to protrude downwards from the respective tool-carrying bar 152a, 152b.
  • the tools 153a, 153b are arranged aligned in one row and evenly spaced with a predefined gap between the tools, I, in a cross direction, X, pointed with bidirectional horizontal arrow in Fig.
  • the row of tools 153a, of the first tool-holder head 150a and the row of tools 153b of the second tool-holder head 150b are separated by a feed distance, D, in the feed direction Y corresponding in the embodiment shown to a distance between the gravity centers of the tool holder heads 150a, 150b.
  • first and second tool holder heads 150a, 150b are able to slide with respect to the support frame 110 and therefore also with respect to the processing crosspiece 30 in the cross direction X.
  • Each tool holder head 150a, 150b is provided with sheet-pressing members, 160a, 160b, described in more detail with reference to the enlarged view of the tool-holder head 150a of Fig. 7 .
  • the sheet-pressing members 160a comprise a sheet-pressing plate, 161a, adapted to get in touch with the sheet material to be processed, and elastic connection means 165a, suitable to be inserted into a housing, 155a, of the elongated frame 154a to connect the sheet-pressing plate 161a with the same elongated frame 154a in sliding mode in a direction perpendicular to the plane of the lower sheet-pressing plate 161a, that is in the work direction Z.
  • the elastic connection means 165a in the shown embodiment composed of pins, 166a, and compression springs, 167a exert an elastic action such as to maintain a maximum distance between the sheet-pressing plate 161a and the elongated frame 154a and so the tool-carrying bars 152a integral therewith.
  • the sheet-pressing members 160a, 160b are useful to maintain in stretched out configuration the sheet material being processed and to adjust the work force that the tools 153a, 153b exerts on the sheet material.
  • the electric gearmotor 175a associated with the first tool holder head 150a is controlled in a way totally independent from a corresponding second electric gearmotor associated with the second tool holder head 150b so that the movements in cross direction X of the tool-holder heads 150a, 150b, are completely independent from one other.
  • each of the electric gearmotors 175a, 175b is controlled to move the respective tool holder head 150a, 150b by a cross direction stroke at least equal to the gap between consecutive tools I, so to be able to process any point between a first tool (the leftmost one) and a last tool (the right-most one) 153a of the row of tools of which the tool holder head 150a is provided.
  • a conveyor assembly 70 comprises a conveyor belt 71, which unwinds from an unwind roll, 72, mounted on an unwinding roller, 73, placed with its axis horizontal at the input side of the continuous automatic punching machine 10, in unwound configuration passes through the processing section, 80, of the machine between the tool holder head 150a, 150b and the workpiece support assembly 200, and then it is rewound on a rewind roll, 74, mounted on a winding roller, 75, disposed with its axis horizontal at the output side of the continuous automatic punching machine 10.
  • the workpieces, P, to be processed are loaded in a unwound configuration on the conveyor belt 71 in a part of it in which it runs horizontal at the input side of the continuous automatic punching machine 10 so as to identify a loading surface, C.
  • the advancement of the conveyor belt moves the sheet material workpiece P to the processing section 80 in which the conveyor belt lies above the workpiece support assembly 200.
  • the feed movement of the conveyor belt 71 above the workpiece support assembly 200 in correspondence with the processing section 80 identifies a feed direction, Y, which in the embodiment shown is orthogonal both to the work direction Z and the cross direction X.
  • the workpiece support assembly 200 comprises one or more support assemblies adjustable in the vertical direction and each comprising a lower sloped plane member, 210, an upper sloped plane member 220, and means for adjusting the work depth, 230, through which, if it is varied the horizontal position of the lower sloped plane member 210 it is changed also the position in height of the upper sloped plane member 220 and therefore the position of an abutment member, 240, supported by it.
  • the abutment member 240 in its upper section comprises an abutment plane, 260, which extends below the tool holder heads 150a, 150b in correspondence of the latter.
  • the first movable abutment member 261a is placed in the abutment position while the second movable abutment member 261b is placed in the position of disengagement.
  • Abutment member drive means, 262a, 262b are expected to actuate, independently of each other, each of the movable abutment members 261a, 261b to move from the abutment position to the disengagement position and vice versa.
  • the abutment member 240 includes a fixed abutment portion, 263, a first housing, 264a, for the housing of the first movable abutment member 261a and a second housing, 264b, for the housing of the second movable abutment member, 261b, with the first and second housings 264a, 264b, configured and sized to allow the sliding of the respective movable abutment member along the feed direction Y between two end stroke positions corresponding to the abutment position and the disengagement position.
  • the upper surface of the movable abutment members 261a, 261b is flat and coplanar with the upper surface of the fixed abutment portion 263.
  • the abutment member drive means 262a, 262b comprise fluidic linear actuators arranged outside the abutment member at the discharge side and at the load side, respectively.
  • Fig. 8 it is shown a repetitive decorative motif, M, which can be obtained by a continuous automatic punching machine 10 according to the invention by means of a tool assembly 100, of which in Fig. 8 is schematically shown the first tool holder head 150a, with the corresponding punching tools 153 arranged aligned on a single row extending along the cross direction X, evenly spaced with a certain gap between consecutive tools, I.
  • a tool assembly 100 of which in Fig. 8 is schematically shown the first tool holder head 150a, with the corresponding punching tools 153 arranged aligned on a single row extending along the cross direction X, evenly spaced with a certain gap between consecutive tools, I.
  • each tool 153a performs a specimen, F, of the repetitive decorative motif M, represented in Fig.
  • the continuous automatic punching machine 10 of the invention is provided with a computer numerical control means through which is executed in sequence, without interruption, the working program defined above for the single specimen F, so as to obtain the repetitive decorative motif M on the sheet material workpiece P to be processed.
  • the computer numerical control means are able to control independently but in a coordinated manner, in order to perform a given punching program, the supply movement of the conveyor belt in the feed direction Y, the displacement in the cross direction X of the first tool holder head 150a, the displacement in the cross direction X of the second tool holder head 150b, the selective displacement in the abutment position and in the disengagement position of the first movable abutment member 261a, the selective displacement in the abutment position and in disengagement position of the second movable abutment member 261a, in a time-phased relation with the movement of the processing crosspiece 30 (and so of the tools 153a, 153b) in the work direction Z.
  • the working program executed by the continuous automatic punching machine 10 through the corresponding computer numerical control means is arranged by a computer program in which by means of a graphical user interface is provided a drawing consisting of plurality of marks composing a specimen F of the repetitive decorative motif M to be obtained.
  • FIG. 10 showing a screenshot of a computer program through which is arranged a working program for the continuous automatic punching machine 10, the above drawing is performed in a rectangular drawing area, R, defined in a graphical user interface of the computer program.
  • the horizontal and vertical dimension of the rectangular drawing area R are defined by entering two parameters respectively corresponding to a pitch I in the cross direction X between two consecutive specimens F of the repetitive decorative motif M and to a second pitch A in the feed direction Y between two consecutive specimens F of the repetitive decorative motif M.
  • the drawing consisting of a plurality of marks S of a specimen F of the decorative motif M is obtained by importing in the computer program a file in graphical format, and said computer program, through appropriate processing algorithms, is able to perform a conversion of the file in graphic format into a plurality of marks S in the rectangular drawing area R, which constitutes the specimen F.
  • the computer program comprising the graphical user interface described above interprets the drawing executed in the rectangular drawing area R and then the computer program is able to process the drawing and other setups, such as the speed of the processing crosspiece, to provide to the computer numerical control means a working program where are defined the movements in the cross direction X of the tool holder heads 150a, 150b, and the feed motion Y of the sheet material to be processed P.
  • the size and shape of the marks S is previously defined to correspond to the size and shape of the tool 153a, 153b, or more exactly to the size and shape of the cut that tool is designed to trace on the sheet material workpiece P to be processed.
  • the computer program has to process the drawings into information of a working program for the continuous automatic punching machine 10 in which the first tool holder head 150a is displaced in the cross direction X to perform the working points corresponding to the marks f (right half) of its layer 1 meanwhile, independently, the second tool holder head is displaced to perform the working points corresponding to the marks f (left half) of its layer 2.
  • the machining program has to consider that although the layer 1 and layer 2 are overlapped in the graphical user interface, the tool holder heads 150a and 150b are offset in the feed direction Y by their feed distance D.
  • the working program processed according to the drawings executed in the graphical user interface contains control information about the position of the movable abutment members 261a, 261b, as if, according to the drawings in layer 1 and layer 2, in correspondence of a specific level y in which at least one mark f has to be performed , the relative movable abutment members 261a, 261b has to be switched to the abutment position, otherwise it has to be switched to the disengagement position.
  • the conveyor assembly may be of different types and arranged to unwind according to different paths than the one shown by way of example in Figures 1 and 3 .
  • the abutment plane 260 may be made of steel or another material and maintaining a substantially rigid behaviour under the effect of forces that the processing crosspiece 30 exerts through the tools 153s, 153b, or alternatively it may be provided with a high resilience covering able to partially absorb the cutting forces applied by the tool.
  • the gap between two consecutive tools I in the tool-carrying bar 152a, 152b may be a multiple of the distance in the cross direction X between two consecutive specimens F of the repetitive decorative motif M, and each tool 153 may then be assigned of performing on the sheet material workpiece P several recurrences, placed side by side in the cross direction X, of a specimen F of the repetitive decorative motif M.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Claims (13)

  1. Poinçonneuse automatique continue (10) du type approprié pour effectuer des opérations de poinçonnage, découpage à l'emporte-pièce, découpe, gravure, gravure, perforation ou similaire sur les pièces de cuir (P) ou matériaux en feuilles similaires, comprenant
    - au moins deux montants (12, 13),
    - une traverse de traitement (30) montée sur lesdits au moins deux montants (12, 13) en mode coulissant,
    - ladite traverse de traitement (30) étant munie au fond d'un ensemble d'outils (100),
    - des moyens d'entraînement (40) de ladite traverse de traitement (30) pour provoquer son glissement par rapport auxdits montants (12, 13) de façon à ce qu'elle effectue un mouvement alternatif qui est un mouvement de travail dudit ensemble d'outils (100) dans une direction de travail (Z),
    - un ensemble de support de pièce (200) positionné au-dessous dudit ensemble d'outils et comprenant un plan de butée (260),
    - un ensemble convoyeur (70) comprenant une bande transporteuse (71) agencée pour passer en configuration déroulée au-dessus de ladite plan de butée (260)
    - une section de traitement (80) de ladite poinçonneuse automatique continue (10) située entre ledit ensemble d'outils (100) et ledit plan de butée (260), avec une pièce en cuir (P) ou un matériau en feuille similaire à traiter étant amenée à ladite section de traitement (80) et reposant sur ladite bande transporteuse (71) dans une direction de transport (Y),
    ladite poinçonneuse automatique continue (10) étant caractérisée en ce que ledit ensemble d'outils (100) comprend au moins une première (150a) et une deuxième (150b) têtes porte-outils chaque tête comprenant une barre porte-outil allongée (152a, 152b) qui est allongée dans une direction transversale (X) et munie d'une pluralité d'outils (153a, 153b) agencés pour dépasser de ladite barre porte-outil (152a, 152b), lesdites première (150a) et deuxième (150b) têtes porte-outils étant disposées consécutivement dans une direction d'avance (Y)
    avec la même orientation spatiale, chacune desdites première (150a) et deuxième (150b) têtes porte-outils étant prévue dans ledit ensemble d'outils (100) pour coulisser dans ladite direction transversale (X) et en ce que comprenant des moyen d'entraînement transversal (170) associé à chacune desdites première (150a) et deuxième (150b) têtes porte-outils qui sont adaptés pour entraîner le mouvement de coulissement dans ladite direction transversale (X) de chacune desdites têtes porte-outils (150a, 150b), indépendamment les unes des autres.
  2. Poinçonneuse automatique continue (10) selon la revendication 1 caractérisée en ce que ledit ensemble d'outil (100) comprend un cadre de support (110) muni de moyens de connexion amovibles (111) adaptés pour permettre l'ancrage dudit ensemble d'outil (100) à ladite traverse de traitement (30), et en outre pourvu d'au moins un premier (112a) et un deuxième (112b) rails de guidage parallèles l'un à l'autre, chacune desdites au moins une première (150a) et une deuxième (150b) têtes porte-outils étant associée à un premier (112a) et un deuxième (112b) rail de guidage respectifs par l'intermédiaire d'un élément coulissant correspondant (151a, 151b).
  3. Poinçonneuse automatique continue (10) selon la revendication 1, caractérisée en ce que chacune desdites au moins une première (150a) et une deuxième (150b) têtes porte-outils comprend un cadre allongé (154a, 154b) comprenant un côté de travail avec un siège d'accouplement pour ladite barre porte-outils (152a, 152b) et des logements (155a) pour un élément presse-feuilles (160a, 160b) comprenant une plaque de pressage de feuilles (161a) et un moyen de connexion élastique (165a) adaptés pour être insérés dans lesdits logements (155a) pour connecter ladite plaque de pressage de feuilles (161a) avec ledit cadre allongé (154a, 154b) de sorte qu'elle puisse glisser dans une direction perpendiculaire au plan de ladite plaque de pressage de feuilles (161a) et avec une action élastique de manière à maintenir la distance maximale entre ladite plaque de pressage de feuilles (161a) et ledit cadre allongé (154a, 154b).
  4. Poinçonneuse automatique continue (10) selon la revendication 1, caractérisée en ce que ledit plan de butée (260) comprend au moins un premier élément de butée mobile (261a) et au moins un deuxième élément de butée mobile (261b) chacun desdits premier (261a) et deuxième (261b) éléments de butée mobiles étant mobile dans la direction de ladite direction d'avance (Y), indépendamment l'un de l'autre, entre une position de butée, dans laquelle ledit élément de butée mobile (261a, 261b) est placé pour intercepter des outils (153a, 153b) d'une tête porte-outil respective (150a, 150b), et une position de désengagement, dans laquelle ledit élément de butée mobile (261a, 261b) est positionné pour ne pas interférer avec la course desdits outils (153a, 153b); et des moyens d'entraînement d'élément de butée (262a, 262b) aptes à actionner, indépendamment l'un de l'autre, lesdits éléments de butée mobiles (261a, 261b) pour passer de ladite position de butée à ladite position de désengagement et vice versa.
  5. Poinçonneuse automatique continue (10) selon la revendication précédente, caractérisée en ce que ledit plan de butée (260) comprend une partie de support fixe fournissant au moins un premier logement (264a) pour loger ledit premier élément de butée mobile (261a) et au moins un second logement (264b) pour loger ledit deuxième élément de butée mobile (261b), lesdits au moins un premier (264a) et un deuxième (264b) logements étant configurés et dimensionnés pour permettre le glissement de l'élément de butée mobile respectif (261a, 261b) dans ladite direction d'avance (Y) entre deux positions de fin de course correspondant à ladite position de butée et à ladite position de désengagement.
  6. Poinçonneuse automatique continue (10) selon la revendication 4 ou 5, caractérisée en ce que ledit plan de butée 260 comprend une partie de butée fixe (263), la surface supérieure desdits élément de butée mobiles (261a, 261b) étant plane et coplanaire avec la surface supérieure de ladite partie de butée fixe (263).
  7. Poinçonneuse automatique continue (10) selon la revendication 4, ou les suivantes caractérisé en ce qu'il comprend des moyens de commande numérique par ordinateur capables de commander, indépendamment mais de manière coordonnée, afin d'exécuter un programme de poinçonnage donné, le mouvement d'alimentation de ladite bande transporteuse (71) dans ladite direction d'alimentation (Y), le déplacement sélectif dans ladite position de butée et dans ladite position de désengagement dudit premier élément de butée mobile (261a), le déplacement sélectif dans ladite position de butée et dans ladite position de désengagement dudit deuxième élément de butée mobile (262a), en relation temporelle avec le mouvement de ladite traverse de traitement (30) dans ladite direction de travail (Z).
  8. Poinçonneuse automatique continue (10) selon la revendication 4, ou les suivantes, caractérisée en ce que ledit ensemble de support de pièce (200) est muni de moyens (230) pour régler la profondeur de travail.
  9. Procédé de réalisation de motifs sur cuir (P) ou matériau similaire en feuilles ou en ruban au moyen d'une poinçonneuse automatique continue (10) du type apte à effectuer des opérations de poinçonnage, découpage à l'emporte-pièce, refendage, découpage, perforation ou similaire, comprenant:
    - une traverse de traitement (30) munie au fond d'un ensemble d'outils (100) comprenant au moins une première (150a) et une deuxième (150b) têtes porte-outils reliée audit ensemble d'outils (100) pour coulisser dans une direction d'allongement (X) de ladite tête porte-outil (150a, 150b), et, indépendamment les uns des autres, des moyen d'entraînement transversal (170) associé à chacune desdites première (150a) et deuxième (150b) têtes porte-outils adaptés pour entraîner leur mouvement de coulissement dans ladite direction d'allongement (X), indépendamment les uns des autres,
    - des éléments d'entraînement (40) de ladite traverse de traitement (30) prévus pour provoquer un mouvement alternatif qui est un mouvement de travail dudit ensemble d'outil (100) dans la direction d'un axe de travail (Z),
    - un ensemble de support de pièce (200) monté au-dessous dudit ensemble d'outils (100) en correspondance avec ce dernier et comprenant un plan de butée (260),
    - un ensemble convoyeur (70) comprenant une bande transporteuse (71) agencée pour passer en configuration déroulée au-dessus de ladite plan de butée (260),
    - une section de traitement (80) de ladite poinçonneuse automatique continue (10) située entre ledit ensemble d'outils (100) et ledit plan de butée (260) dans une direction d'avance (Y), et des moyens d'alimentation pour déterminer l'avancement de ladite bande transporteuse, de manière à faire passer ledit cuir ou matériau similaire en feuilles ou en ruban (P) en cours de traitement à travers ladite section de traitement (80),
    - des moyens de commande numérique par ordinateur de ladite machine appropriés pour commander lesdits moyens d'entraînement (40), lesdits moyens d'alimentation de la bande transporteuse (71) et lesdits moyens d'entraînement transversal (170), en fonction de programmes de poinçonnage exécutables par ladite machine,
    ledit procédé comprenant:
    - la réalisation, par l'intermédiaire d'une interface utilisateur graphique d'un programme d'ordinateur, d'un dessin constitué d'une pluralité de signes (S) qui représente un exemplaire (F) d'un motif décoratif répétitif (M) qui devant être obtenu sur une pièce en feuille (P) à traiter,
    - la conversion dudit dessin dans un programme de travail de ladite poinçonneuse automatique continue (10),
    - l'exécution automatique dudit programme de travail par ledit moyen de commande numérique,
    ledit procédé étant caractérisé en ce que ladite interface utilisateur graphique dudit programme informatique prévoit la possibilité de produire et de gérer un nombre de couches ou de feuilles de dessin égal au nombre desdites têtes porte-outils (150a, 150b), chaque couche ou feuille de dessin étant associée à l'une desdites têtes - têtes porte-outils (150a, 150b).
  10. Procédé selon la revendication 9, caractérisé en ce que:
    - ledit plan de butée (260) comprend: au moins une premier élément de butée mobile (261a) et au moins un deuxième élément de butée mobile (261a) chacun desdits premier (261a) et deuxième (261b) éléments de butée mobiles étant mobile dans la direction de ladite direction d'avance (Y), indépendamment l'un de l'autre, entre une position de butée, dans laquelle ledit élément de butée mobile (261a, 261b) est placé pour intercepter des outils (153a, 153b) d'une tête porte-outil respective (150a, 150b), et une position de désengagement, dans laquelle ledit élément de butée mobile (261a, 261b) est positionné pour ne pas interférer avec la course desdits outils (153a, 153b); d'une tête porte-outils respective (150a, 150b);
    - et des moyens d'entraînement d'élément de butée (262a, 262b) aptes à actionner, indépendamment les uns des autres, lesdits éléments de butée mobiles (261a, 261b) pour passer de ladite position de butée à ladite position de désengagement et vice versa.
    - ledit moyen de commande numérique commande, indépendamment mais de manière coordonnée, le mouvement d'alimentation de ladite bande transporteuse (71) dans ladite direction d'alimentation (Y), le déplacement dans ladite direction transversale (X) de ladite première tête porte-outil (150a), le déplacement dans ladite direction transversale (X) de ladite deuxième tête porte-outil (150b), le déplacement sélectif dans ladite position de butée et dans ladite position de désengagement dudit premier élément de butée mobile (261a), le déplacement sélectif dans ladite position de butée et dans ladite position de désengagement dudit deuxième élément de butée mobile (261b), en relation temporelle avec le mouvement de ladite traverse de traitement (30) dans ladite direction de travail (Z),
    - ledit programme informatique est capable de traiter ledit dessin dudit exemplaire (F) d'un motif décoratif répétitif (M) à réaliser pour fournir audit moyen de commande numérique un programme de travail qui est nécessaire à la réalisation dudit motif décoratif répétitif (M) sur une pièce en cuir (P) ou un matériau en feuille similaire traité dans ladite poinçonneuse automatique continue (10).
  11. Procédé selon la revendication 9 ou 10, caractérisé en ce que la réalisation dudit dessin s'effectue dans une zone de dessin rectangulaire (R) définie dans ladite interface utilisateur graphique, ladite zone de dessin rectangulaire (R) ayant une dimension horizontale correspondant à une distance (I) dans la direction transversale (X) entre deux exemplaires consécutifs (F) dudit motif décoratif répétitif (M) et une dimension verticale égale au pas (A) dans la direction d'alimentation (Y) entre deux exemplaires consécutifs (F) dudit motif décoratif répétitif (M), ledit dessin étant obtenu en dessinant dans ladite zone de dessin rectangulaire une pluralité de signes (S) correspondant à des points de la surface de la matière en feuille (P) à traiter où un outil (153a, 153b) de ladite poinçonneuse automatique continue (10) doit agir.
  12. Procédé selon la revendication précédente, caractérisé en ce que lesdites dimensions horizontale et verticale de ladite zone de dessin rectangulaire (R) sont définies à travers ladite interface utilisateur graphique.
  13. Procédé selon la revendication 9 ou les suivantes, caractérisé en ce que ledit dessin constitué d'une pluralité de signes (S) est obtenu en important un fichier dans un format graphique dans ledit programme informatique, ledit programme informatique effectuant une conversion dudit fichier au format graphique en une pluralité de signes (S) de ladite zone de dessin rectangulaire (R).
EP16715880.7A 2015-02-25 2016-02-24 Procédé de production de motifs sur du cuir et machine à découper le cuir associée Active EP3262201B1 (fr)

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CN108220495A (zh) * 2017-12-29 2018-06-29 广德大金机械有限公司 一种用于对皮革打孔的装置
CN108130389A (zh) * 2017-12-29 2018-06-08 广德大金机械有限公司 一种皮革连续打孔加工装置
CN109337600B (zh) * 2018-11-16 2021-01-19 深圳市飞荣达科技股份有限公司 胶面局部无胶的单面胶及其生产方法
EP3699305A1 (fr) * 2019-02-19 2020-08-26 Comelz S.p.A. Appareil de commande numérique pour le découpage automatique d'une feuille de matériau ou de multiples feuilles superposées
CN109895172B (zh) * 2019-04-01 2021-03-19 杭州翼兔网络科技有限公司 一种皮革自动切割收纳系统
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CN113584237B (zh) * 2021-07-28 2022-09-30 深圳市民达科技有限公司 一种汽车内饰皮革加工机械及加工方法

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