EP0202676B1 - Appareil pour couper un matériau en feuilles ayant une plusieurs couches - Google Patents

Appareil pour couper un matériau en feuilles ayant une plusieurs couches Download PDF

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Publication number
EP0202676B1
EP0202676B1 EP86106923A EP86106923A EP0202676B1 EP 0202676 B1 EP0202676 B1 EP 0202676B1 EP 86106923 A EP86106923 A EP 86106923A EP 86106923 A EP86106923 A EP 86106923A EP 0202676 B1 EP0202676 B1 EP 0202676B1
Authority
EP
European Patent Office
Prior art keywords
cutting
cutting tool
carrier
tool
cutting table
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.)
Expired - Lifetime
Application number
EP86106923A
Other languages
German (de)
English (en)
Other versions
EP0202676A2 (fr
EP0202676A3 (en
Inventor
Rodrigo Becerra Carrasco
Bernardo Alcantara Perez
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.)
Inetum Espana SA
Original Assignee
Investronica SA
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
Application filed by Investronica SA filed Critical Investronica SA
Priority to AT86106923T priority Critical patent/ATE60536T1/de
Publication of EP0202676A2 publication Critical patent/EP0202676A2/fr
Publication of EP0202676A3 publication Critical patent/EP0202676A3/en
Application granted granted Critical
Publication of EP0202676B1 publication Critical patent/EP0202676B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08—Means for treating work or cutting member to facilitate cutting
    • B26D7/086—Means for treating work or cutting member to facilitate cutting by vibrating, e.g. ultrasonically
    • 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
    • B26D7/01—Means for holding or positioning work
    • B26D7/018—Holding the work by suction
    • 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
    • B26F1/3806—Cutting-out; Stamping-out wherein relative movements of tool head and work during cutting have a component tangential to the work surface
    • B26F1/3813—Cutting-out; Stamping-out wherein relative movements of tool head and work during cutting have a component tangential to the work surface wherein the tool head is moved in a plane parallel to the work in a coordinate system fixed with respect to the work

Definitions

  • the invention refers to an apparatus for cutting sheet material having one or several layers, comprising a cutting table equipped with a vacuum installation for holding the material in place, a slide device moving lengthwise in Y-direction and crosswise in Y-direction of the cutting table as carrier or an ultrasound driven cutting tool unit, movable in Z-direction perpendicular to the cutting table, the movements of the slide device along the cutting lines are controlled by means of a data processor which processes the marking data and the data control and an airpermeable synthetic fiber base on the cutting table as support surface for the material to be cut, whereby the ultrasonic cutting unit comprises a cutting tool with a cutting edge, a coupling element, an ultrasonic emitter and a converter which are connected to a carrier, said carrier is up and down movably supported.
  • Apparatus for cutting sheet material comprising a table for supporting the material to be cut and a carriage which is displaceable in X- and Y-direction relatively to the table and carrying a cutting tool and a drive mechanism for operating the cutting tool during the movements of the carriage are known for example by GB-A-2.019.295.
  • the sheet material to be cut normally comprises a plurality of layers the length of the up and down motion of the mechanically driven cutting tool being rotatable mounted about the longitudinal axis-known as Z-axis-perpendicular to the surface of the cutting table is about 20 mm.
  • the table for supporting the material to be cut must have a penetrable bristle bed defining the material supporting surface upon which the material to be cut is supported.
  • the single fibres of such a bristle bed must have a great length which is in the range of 30 mm.
  • assemblies of this kind are relatively costly both in view of the construction of such cutting heads and of the need of a voluminous bristle bed.
  • cutting heads of this type are also inconvenient from the point of view of their large masses given that during the cutting movements along the cutting lines they must accelerate and stop continuously, entirely independent of the fact that their maintenance is also burdensome and costly.
  • the mechanically driven cutting tool is replaced by an ultrasonically vibrated cutting tool which has a small dimension.
  • the tip of the cutting tool does not go away from the surface defined by the top of the fibers of the bristle bed and does not touch the base of the cutting table; that means to hold the tip of the tool continuously in the area defined by the length of the fibers of the bristle bed independently of parallelism errors existing between the surface defined by the bristle bed and the plane defined by the X-Y-carriage mechanism that moves the cutting tool. In view of the large dimensions of such areas errors are not negligible.
  • a displacement sensor is located near said cutting surface.
  • a cutting apparatus which comprises a steel wire set in vibrations by an ultrasonic generator for cutting soft food supplies or paper.
  • an ultrasonic generator for cutting soft food supplies or paper.
  • Function of the present invention is to improve and simplify a cutting apparatus of the kind to establish a simpler construction and of easier maintenance than used up to date.
  • the improved cutting apparatus is characterized in that the carrier is mounted on a disc in form of a cogwheel, having a hollow central sleeve as bearing which surrounds the coupling element of the cutting tool and is rotatably mounted around said Z-direction on a crossbar joined to the Y-carrier of the slide device of the apparatus, that the cutting tool is mounted to said converter and having a blade stroke between a few hundreths to a few tenths of a millimeter, and that the fiber base on the cutting table consists of individual fibers which are approximately 0.5 mm in diameter and 5 mm in length.
  • the ultrasonic cutting unit comprises a cutting tool with a cutting edge perpendicular to the surface of the cutting table, whereby said cutting tool is connected to the ultrasonic emitter such that one of the cutting edges of the cutting tool is oriented exactly in the Z-direction, and whereby the up and down movement of the carrier is generated by a cylinder which is connected to the cutting unit.
  • the blade stroke of the cutting tool amounts to approximately 15-20 mm, here it is between a few hundreths to a few tenths millimeter.
  • the height of the fibers on the brush surface can thus be considerably reduced to 2 or 3 mm, which provides for considerable savings, especially, when an endless conveyor as a supporting surface for the material to be cut is used.
  • the cutting frequency is much greater than in known mechanical systems.
  • Another advantage to be considered is the fact that the control of the cutting tool around axis Z is simpler to carry out than it has been to date, and because of the vertical movement along axis Z can take place with the blade stroke stopped, contrary to the known systems, in which the cutting tool, when freely run, i.e. at maximum speed, is moved from one piece to be cut to another.
  • the movable carriers coordinated with the area for cutting to order are controllable in known manner by means of a NC data-control processor in the X and Y direction, so that the cutting head can reach any designated point on the surface of the band of material.
  • the controlling signals for the direct current motors that move the carriers are generated in known manner in a so-called cutting line generator, thus making the directions of the movements and the accelerations and speeds controllable within ample limits.
  • NC-control such as fabric, paper, cardboard, plastic and similar materials, material in the shape of bands in individual layers or also in multible layers for the purpose of which the material to be cut can be processed from a roll or as a flat sheet.
  • a NC controlled cutting machine for automatically cutting to order which is defined generally with reference number 20, is represented.
  • a material 24 to be cut is on the cutting surface 26, also defined as the cutting table.
  • the cutting surface is comprised of a type of brush surface 28 ( Figures 4 and 5) of synthetic fibers, approximately 0.5 mm thick and 5 mm in length, which is air-permeable, which covers the entire cutting surface and upon which the vacuum acts, which is generated by means of a generator 40 see Figure 2.
  • a cutting head 81 which holds the cutting tool 106 still to be described is housed and moves in the X and Y directions, which coincide with the lengthwise and crosswise directions of the cutting surface 26.
  • a x-carrier 49 has been designed, which is movable in the X direction and a y-carrier 62, movable in the Y direction.
  • the X-carrier 49 slides along rails 64, which are arranged in parallel to one another in the cutting area 26, while Y-carrier movement is crosswise and that of X-carrier is lengthwide. As the movements in both directions take place according to the same principle, only the movem- vent in direction X is described here.
  • the drive of the X-carrier in direction is comprised of a direct current motor 66, located at the front part of the cutting area, a tachometer 68 and a position regulator 70, which is controlled by a position servoregulator, not shown here.
  • a direct current motor 66 located at the front part of the cutting area
  • a tachometer 68 and a position regulator 70, which is controlled by a position servoregulator, not shown here.
  • the motor 66 moves on an axle 76, which is projected crosswise through the cutting table, over which a nonstop conveyor belt is guided, which supports the brush surface 28.
  • a nonstop conveyor belt is guided, which supports the brush surface 28.
  • the X-carrier 49 is screwed to the toothed pulleys 84, through which it is synchronized in movement with the belts 82, 84.
  • a direct current motor 90 On the X-carrier 49, there is a direct current motor 90, a tachometer 92, a position regulator 94, a gear 96, 98 with drive pulleys 100, a toothed belt 102 and a tensing roller 104, which serve to drive Y-carrier 62.
  • the movements in direction Y are controlled in the same way that it is done in direction X, by means of a coordinated regulation of the position, for which purpose the habilitation signals for the X and Y regulation coils, in addition to the cutting tool 106 for the movement, rotation, around axis Z located perpendicularly to the cutting surface 26 are generated in a control apparatus 18.
  • the cutting tool 106 has one blade edge 108 which is oriented exactly in the direction of axle Z, perpendicular to the cutting face 26 around which the cutting tool 106 rotates.
  • the length of the blade edge 108 only has to be longer by a short safety distance,-reference number 112,-measuring approximately 2-3 mm longer than the pile of material 24a to be cut. In this way, it is assured that along the full length, the blade does not penetrate the base of the cutting surface 26; see Figure 1.
  • cutting tool 116 is used in a different way, principally, when few layers of cloth are to be cut.
  • This cutting tool 116 is shown in Figure 5 and has one blade edge 118, which is located under a slight cutting angle a regarding the cutting surface 26. This angle is smaller than the right angle, which is formed by the edge 108 in Figure 4, regarding the cutting surface 26. This arrangement makes the cutting easier and enhances the movement of the tool.
  • the drive in the form of a transducer 30 (emitter) is the same, see Figure 7.
  • the transducer By means of the transducer, the cutting tool is started vibrating from 20 to 40 Khz, with amplitudes of from a few hundreths to a few tenths of a millimeter, with higher or lower intensities, depending upon the material and the height of the cut, utilizing for this process the general principles of an ultrasonic procedure, as is, in itself, already known.
  • an ultrasonic generator 31 ( Figure 1) is provided for, not shown in greater detail, which generates a sequence of electrical signals, which are transmitted by means of a cable 32 ( Figures 6 and 7) and a so-called convertor 34 of the transducer, which convert the electrical signals into mechanical vibrations, which are transmitted to a booster 36, which has the special shape as seen in Figure 7.
  • a booster of this type is a mechanical amplifier.
  • the transducer 30 also includes a "Sonot- rode" 38, on which the cutting tool is mounted.
  • ultrasonic energy is used.
  • the geometric forms can also vary regarding the shape shown, depending upon the cutting tool, to thus achieve an ideal adaptation, the booster and the Sonot- rode thus form a coupling element.
  • a motor 60 which serves to adjust the blade around axle Z.
  • the motor 60 drives the cutting group defined in conjunction with 73 by means of cogwheels 63 and 65, see Figure 7.
  • the cogwheel 65 used as a pulley is joined to a hollow axis 67, rotating in a housing on the ball bearings 69 and 71, which, in turn, are located on the crossbar 66 of the unit 73.
  • the crossbar 66 is joined to the Y-carrier 62, see also Figure 3.
  • a carrier 75 working in an up and down movement, mounted on a crossbar 61, positioned on the cogwheel 65, supports the ultrasonic emitter or transducer 30 and can be moved by means of a cylinder 77.
  • the cutting head 81 is thus moveable in the X- or Y-direction by means of X-and Y-carriers, described in relation to Figure 3; and in direction Z, funadamentally only the cutting tool, by means of Z-carrier 75, previously described in relation to Figure 7, while the rotation of the cutting tool around axle Z takes place by means of the motor 60.
  • the control commands in the control apparatus 18 must be set in such a way that the rotation around axle Z is not over 360° or 2x360°, for the purposes of avoiding a crossing of the cables and feeder lines; to the contrary, rotating joints would have to be used.
  • the cutting head has to be able to move within these limits and with a free-run movement-for this purpose, without any cutting movements-to adopt the 0° position.
  • sliprings as couplers for the cables and feeder lines.
  • the cutting head also has a presser bar (79), by means of which the material to be cut, for example a cloth, is pressed down slightly, by the action of a spring 83 against the cutting surface 26.
  • the pressure bar is mounted on the hollow axle 67 in the area of the passing blade 106.
  • the spring 83 is supported by a base 89, also mounted on the hollow axle 67.

Claims (5)

1. Appareil pour le découpage d'un matériau en feuille (24) comprenant une ou plusieurs couches, comportant une table de découpage (26) équipée d'une installation de production de vide (40) pour maintenir en place le matériau, un dispositif coulissant (49, 62) se déplaçant longitudinalement (direction X) et transversalement (direction Y) par rapport à la table de découpage et formant un support d'une unité (73) à outil de coupe soumis à des vibrations ultrasonores, pouvant se déplacer dans une direction (direction Z) perpendiculaire à la table de découpage (26), les mouvements du dispositif coulissant suivant les lignes de coupe étant commandés au moyen d'un processeur de données (18) qui traite les données de marquage et la commande des données, et une base en fibres synthétiques, perméable à l'air, sur la table de découpage, en tant que surface support pour la matériau à découper, l'unité de découpage ultrasonore (73) comprenant un outil de coupe (106) avec un bord tranchant (108, 118), un élément de couplage (38), un émetteur ultrasonore (30) et un convertisseur (34) qui sont reliés à un support (75) monté de manière à pouvoir se déplacer vers le haut et vers le bas, caractérisé en ce que le support (75) est monté sur un disque se présentant sous la forme d'une roue dentée (65), comportant un manchon central creux (67) en tant que tourillon, lequel entoure l'élément de couplage (38) de l'outil de coupe et est monté à rotation, autour de la direction Z sur une traverse (66) reliée au support Y (49) du dispositif coulissant de l'appareil, en ce que l'outil de coupe (108, 118) est monté sur le convertiseeur (34) et présente une course de sa lame tranchante comprise entre quelque centièmes et quelque dixièmes de millimètre, et en ce que la base en fibres (28) de la table de découpage est constituée de fils individuels qui ont une diamètre d'environ 0,5 mm et une longueur d'environ 5 mm.
2. Appareil suivant la revendication 1 caractérisé en ce que l'unité de découpage ultrasonore (73) comprend un outil de coupe (106) avec un bord tranchant (108) perpendiculaire à la surface de la table de découpage (26) et en ce que l'outil de coupe (106) est relié à l'émetteur ultrasonore (30) de telle façon que l'un des bords tranchants (108) de l'outil de coupe (106) soit orienté exactement dans la direction Z.
3. Appareil suivant la revendication 1 caractérisé en ce que le mouvement vers le haut et vers le bas du support (75) est produit par un vérin (77) qui est relié à l'unité de découpage (73).
4. Appareil suivant la revendication 1 caractérisé en ce que sur l'extrémité libre du manchon creux (67) est emboîtée une barre de pressage (79) sollicitée par un ressort, barre dont la zone centrale peut être traversée par l'outil de coupe (106).
5. Appareil suivant la revendication 1 caractérisé en ce que la base en fibres (28) est supportée par une courroie transporteuse sans fin guidée sur la table de découpage (26).
EP86106923A 1985-05-22 1986-05-21 Appareil pour couper un matériau en feuilles ayant une plusieurs couches Expired - Lifetime EP0202676B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86106923T ATE60536T1 (de) 1985-05-22 1986-05-21 Vorrichtung zum schneiden von bandmaterial, das aus einer oder mehreren schichten besteht.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES543394A ES8706339A1 (es) 1985-05-22 1985-05-22 Metodo y aparato de corte por util accionado ultrasonicamente.
ES543394 1985-05-22

Publications (3)

Publication Number Publication Date
EP0202676A2 EP0202676A2 (fr) 1986-11-26
EP0202676A3 EP0202676A3 (en) 1987-08-26
EP0202676B1 true EP0202676B1 (fr) 1991-01-30

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ID=8489244

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86106923A Expired - Lifetime EP0202676B1 (fr) 1985-05-22 1986-05-21 Appareil pour couper un matériau en feuilles ayant une plusieurs couches

Country Status (9)

Country Link
EP (1) EP0202676B1 (fr)
JP (1) JPS6219397A (fr)
AT (1) ATE60536T1 (fr)
CA (1) CA1278506C (fr)
DE (2) DE3530886A1 (fr)
DK (1) DK164086C (fr)
ES (1) ES8706339A1 (fr)
FI (1) FI82812C (fr)
IE (1) IE57384B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110000842A (zh) * 2019-04-26 2019-07-12 天津宏光伟业激光科技有限公司 一种振动刀切割机构及切割机

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JPH01301096A (ja) * 1988-05-30 1989-12-05 Tachibana Seisakusho:Kk シート状素材のカッティング装置及びカッタ
JPH071278Y2 (ja) * 1988-07-28 1995-01-18 ウシオ株式会社 穿孔装置用パンチングユニット
DE4240933C3 (de) * 1992-12-04 2002-11-07 Weissenberger Ag Rebstein Vorrichtung zur Herstellung von Passepartouts für Bilder oder Schriftstücke
ATE237436T1 (de) * 1996-10-31 2003-05-15 Ima Spa Vorrichtung zur herstellung von bekleidungsstoffwaren vorgegebener grösse, ohne strukturelle spannung in stoffmaterial zu erzeugen
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JP4804808B2 (ja) * 2005-06-14 2011-11-02 株式会社ヒューマンテック 工作装置と工作方法
US7588438B2 (en) * 2005-11-01 2009-09-15 The Board Of Regents, The University Of Texas System System, method and apparatus for fiber sample preparation for image analysis
CN101775740B (zh) * 2010-03-12 2012-04-11 长春际华三五零四职业装有限公司 用于自动裁床的夹布装置及自动裁床
JP5697419B2 (ja) * 2010-12-08 2015-04-08 株式会社ナムックス 裁断装置
CN104294575B (zh) * 2014-09-30 2017-12-05 长园和鹰智能科技有限公司 自动裁剪机的校准方法及带校准功能的自动裁剪机
DE102018210741A1 (de) * 2018-06-29 2020-01-02 Robert Bosch Gmbh Schneidvorrichtung
CN108823945B (zh) * 2018-07-02 2024-04-12 江苏湛德医疗用品有限公司 一种无纺布生产过程折叠裁剪系统
AT521720A1 (de) * 2018-10-01 2020-04-15 Gfm Gmbh Verfahren zum Schneiden von Randfasen plattenförmiger Werkstücke
CN110016797B (zh) * 2019-05-04 2024-01-26 重庆工业职业技术学院 一种方便服装设计的剪裁操作台

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Also Published As

Publication number Publication date
DK164086B (da) 1992-05-11
ES543394A0 (es) 1987-07-01
CA1278506C (fr) 1991-01-02
DK164086C (da) 1992-10-12
EP0202676A2 (fr) 1986-11-26
FI861976A (fi) 1986-11-23
FI82812B (fi) 1991-01-15
JPS6219397A (ja) 1987-01-28
EP0202676A3 (en) 1987-08-26
IE57384B1 (en) 1992-08-12
DK224586D0 (da) 1986-05-14
DE3530886A1 (de) 1986-11-27
DE3677255D1 (de) 1991-03-07
DK224586A (da) 1986-11-23
ES8706339A1 (es) 1987-07-01
FI82812C (fi) 1991-04-25
FI861976A0 (fi) 1986-05-12
ATE60536T1 (de) 1991-02-15
IE861346L (en) 1986-11-22

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