WO1988001556A1 - Organe de decoupage - Google Patents

Organe de decoupage Download PDF

Info

Publication number
WO1988001556A1
WO1988001556A1 PCT/AU1987/000288 AU8700288W WO8801556A1 WO 1988001556 A1 WO1988001556 A1 WO 1988001556A1 AU 8700288 W AU8700288 W AU 8700288W WO 8801556 A1 WO8801556 A1 WO 8801556A1
Authority
WO
WIPO (PCT)
Prior art keywords
cutting
shaft
sheet material
cutting head
travel
Prior art date
Application number
PCT/AU1987/000288
Other languages
English (en)
Inventor
Christopher Probert
Original Assignee
Fortron Automotive Treatments Pty. Ltd.
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 Fortron Automotive Treatments Pty. Ltd. filed Critical Fortron Automotive Treatments Pty. Ltd.
Publication of WO1988001556A1 publication Critical patent/WO1988001556A1/fr

Links

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
    • B26D7/01—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
    • 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
    • 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
    • B26F2001/388—Cutting-out; Stamping-out controlling the blade orientation along the cutting path

Definitions

  • THIS INVENTION relates to a means of cutting sheet material into predetermined shapes.
  • the invention resides in a means of cutting sheet material comprising a cutting table for supporting said sheet material, a cutting head mounted to a support to be movable over said table, said cutting head supporting an upright shaft which is freely pivotal on the cutting head, said shaft supporting a blade to one side of the main axis of the shaft about its upright axis biassing means for biassing the blade into engagement with the surface of the table, said blade having a cutting edge directed in the direction of the shaft which terminates in a sharp blade tip a drive means for causing controlled movement of the cutting head over the table and a control means for causing the controlled movement of the cutting head according to a predetermined pattern to cut pieces of sheet material into shapes.
  • control means produces a movement of the shaft such that the blade tip moves along the desired cutting path.
  • said control means causes the blade tip to change its direction of travel between a first and second direction by moving the shaft in a first direction of travel for the distance beyond the change in direction of travel, said distance corresponding to the radius of the rotation path of the blade tip about the central axis of the shaft, rotating the shaft about the blade tip until the shaft overlies the second direction of travel and moving the shaft in the second direction of travel.
  • control means causes the shaft when spaced said distance from the junction between the first direction of travel and the curve to rotate about the centre of curvature of said curve until the shaft axis overlies the second direction of travel and then causing movement of the shaft in the second direction of travel.
  • said cutting table is provided with aa upper surface which is capable of being penetrated by the blade tip.
  • said cutting table is provide with means for maintaining the sheet material in close intimate contact with the cutting table.
  • the means comprises a plurality of spaced apertures opening into the upper face of the cutting table and connected to an air extraction means.
  • the cutting head is mounted to a carried rail which extends across the cutting table and said cutting head is movable along the rail, wherein said rail is mounted to the cutting table to be movable over the table along an axis transverse to the rail the movement of the cutting head on the rail and the movement of the rail over the cutting table comprising said controlled movement.
  • Figure 1 is a schematic side elevation of the cutting head according to the embodiment
  • Figure 2 is a schematic side elevation of the cutting head according to the embodiment
  • Figure 3 is a schematic plan view of the cutting head of figure 1;
  • Figure 4 illustrates the movement of the shaft and blade tip during an instantaneous change in direction
  • Figure 5 illustrates the movement of the blade tip and shaft during a gradual change in direction
  • FIGS 6 and 7 schematically illustrate one means of effecting controlled movement of the cutting head
  • Figure 8 is an isometric view of an alternative mounting for the cutter blade.
  • the embodiment is directed to a device for cutting thin film into predetermined shapes.
  • the embodiment comprises a cutting table 11 having a base 12 overlaid by a sheet of material 13 which presents a hard support surface to the sheet material 14 which is to be cut but which can be readily penetrated by a cutting blade without damage to the cutting blade.
  • the table 11 is formed with an array of apertures 15 which open into a plenum space (not shown) beneath the table which is in turn connected to a vacuum source (not shown).
  • the sheet material 14 is stored on rolls 25 mounted transversely on a support stand 26 at one end of the table.
  • the table 11 is associated with a transverse support rail 16 which is mounted to each side of the table 11 for movement along the length of the table by a first drive means (not shown).
  • the support 16 supports a cutting head 17 which is movable along the support 16 by a second drive means (not shown).
  • the first and second drive means may comprise a drive motor directly driving a roller or the support rail or cutting head respectively or causing movement of the support rail and cutting head through a pulley and cable system as shown at figures 6 and 7.
  • the cutting head 17 (shown schematically) is movable on the support rail 16 through the action of a first stopper drive motor 30 having a capstan 31.
  • a cable 32 is wrapped around the capstan from the capstan the cable passes around a first roller pulley 33 provided on the support rail to the cutting head 17 where it is attached to a bollard 34 therein.
  • the other end of the cable extends the full length of the cutting table and returns to the support rail after passing over an adjustable caller 35. It then goes around the end guide rollers 36 and 37 at the other end the support rail and return to the cutting head to be fixed to the bollard 34.
  • the support rail 16 is movable on the table through a second stopper drive motor 40 which also has a capstan 41 to which the cable 42 is attached.
  • One end of the cable extends the length of the table where it passes around a roller pulley 43 and returns to form a rectangular loop around idler rollers 44, 45, 46 and 47 at each corner of the table to be attached to the side of the support: rail remote from the drive motor.
  • the cable is also fixed to the side of the support rail closest to the drive motor in the portion between the drive motor and idler pulley 43.
  • the cutting head is supported on the support 16 for movement therealong by a set of rollers 13.
  • the cutting head also supports an upright shaft 19 at one side thereof.
  • the shaft is rotatabiy supported by the cutting head and is also slidably supported in the cutting head 17.
  • the shaft is biased to its lowermost position in the cutting head 17 via a coil spring 20 which is received over the shaft is mounted between the body of the cutting head and a stop 27 provided on the shaft.
  • the upper end of the shaft 19 is associated with a cam shaped toggle 21 which on rotation can be used to raise the shaft 19 in the cutting head 17 and retain it in the raised position.
  • the lower end of the shaft 19 supports a radial arm 22 which supports a cutting blade 23 at its outer end wherein the cutting blade 23 is formed with a sharp tip 24 at the lower end of its cutting edge 25.
  • the movement of the cutting head 27 is effected through operation of the first and second drive means which are able to move the cutting head along the "X" and "Y" axes defined by the movement of the cutting head 27 on the support rail and the support rail 16 over the cutting table 11.
  • the operation of the first and second drive means is effected through a control means which causes the cutting head to move along a predetermined path whereby the cutting blade 23 cuts the sheet material 14 into predetermined shapes.
  • the pivotably mounting of the shaft in the cutting head ensures that the tip 24 of the cutting blade 23 trails behind the shaft 19 on movement of the cutting head to facilitate the most efficient cutting action of the sheet material by the cutting blade.
  • This action requires that the shaft be moved through the path differing from that which is to be travelled by the tip of the cutting blade 23 due to the trailing action of the cutting blade.
  • the difference in the pattern of movement of the shaft 19 and that of the blade tip 24 arises when a change in direction is executed.
  • the control means causes cutting head to move to carry in the first direction beyond the point of intersection B between the first and second direction for a distance to a point P, where the length BP equals the radius of the rotation path of the blade tip 24 about the central vertical axis of the shaft 19,
  • the cutting head is then moved whereby the shaft is then caused to rotate about the blade tip which will be located at point B until the shaft overlies the second direction of travel at point Q, at which time the shaft is caused to move in the second direction.
  • the control means again causes cutting head to move to carry the shaft beyond the point B which constitutes the intersection between the first direction AB and the curve BC to a point P which is spaced from the point B a distance corresponding to the radius of the rotation path of the blade tip 24 about the central axis of the shaft 19.
  • the control means then causes the shaft to rotate about the same centre of curvature R as that of the curve 3C until the shaft overlies the second direction of travel CD at point. Q at which time the shaft is caused to move tin the second direction of travel.
  • a cutting means which ensures the most efficient cutting action of a cutting blade through the utilisation of a trailing arm action and controlled movement of the shaft along a path which compensates for the trailing action of the cutting blade.
  • Figure 8 illustrates an alternative mounting for the cutting blade 23 which comprises a circular base 50 mounted to the lower end of the shaft 19 such that their control axes are coincidental.
  • the blade 23 is supported on a cut away portion of the base which has a radial face 51 to which the blade 23 is fixed.
  • the fixing of the blade 23 is effected by a clamping plate 52 and a screw which fixes the clamping plate to the bass 50.
  • Suitable locating means are provided on the radiai face to ensure proper positioning of the blade.
  • the utilisation of the tracking blade eliminates the need for a steering mechanism for the blade in addition to the shaft which also reduces the mass of the cutting head. As a result a neat uniform cut can be produced at a high speed.

Landscapes

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

Abstract

Un organe servant à découper des matériaux en feuille comprend une table de coupe (11) destinée à soutenir le matériau en feuille, une tête de découpage (17) montée sur un support (16) en vue de son déplacement sur la table (11) et soutenant un arbre vertical (19), qui pivote librement sur la tête de découpage (17) et dont l'un des côtés de l'axe principal est pourvu d'une lame (23) entourant son axe vertical, un organe de sollicitation (20) sollicitant la lame (23) à s'engager dans la surface de la table (11), ladite lame comportant un tranchant (25) orienté dans ladite direction de l'arbre qui se termine par une pointe de lame aiguisée (24), un organe d'entraînement servant à diriger le mouvement de la tête de découpage sur la table et un organe de commande servant à diriger le mouvement de la tête de découpage selon un schéma prédéterminé permettant de découper des morceaux du matériau en feuille selon les formes désirées.
PCT/AU1987/000288 1986-08-27 1987-08-26 Organe de decoupage WO1988001556A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU769586 1986-08-27
AUPH7695 1986-08-27

Publications (1)

Publication Number Publication Date
WO1988001556A1 true WO1988001556A1 (fr) 1988-03-10

Family

ID=3698377

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1987/000288 WO1988001556A1 (fr) 1986-08-27 1987-08-26 Organe de decoupage

Country Status (2)

Country Link
WO (1) WO1988001556A1 (fr)
ZA (1) ZA876340B (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1002009A4 (nl) * 1988-05-26 1990-05-15 B & S Computing B V B A Snijapparaat voor bladvormige produkten.
EP0494483A1 (fr) * 1991-01-09 1992-07-15 Mimaki Engineering Co., Ltd. Procédé pour le changement de direction de l'arête de coupe d'un traceur à découper
EP0719620A2 (fr) * 1994-12-27 1996-07-03 Seiko Epson Corporation Méthode et dispositif pour couper un produit laminé en feuilles
EP0780200A1 (fr) * 1995-12-22 1997-06-25 Wolfgang Dipl.-Ing. Bruder Dispositif pour la coupe de matériaux plans et souples tels que la peau ou l'étoffe
EP0871016A1 (fr) * 1997-04-09 1998-10-14 Gerber Scientific Products, Inc. Plotter équipé de roues d'entraínement à picots ainsi que d'une surface fixe de suport pour la feuille entre lesdites roues
FR2792762A1 (fr) * 1999-04-23 2000-10-27 Atea Procede de decoupe d'une tole de maintien d'une feuille de materiau neutrophage sur une paroi d'une alveole de ratelier de stockage d'assemblages de combustible nucleaire

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1148693B (de) * 1954-02-11 1963-05-16 United Shoe Machinery Corp Maschine zum Stanzen, Perforieren od. dgl.
DE2255312A1 (de) * 1972-11-11 1974-05-22 Guenter Wendt Rotations-schneidewerkzeug
DE2554075A1 (de) * 1975-12-02 1977-06-08 Emil Giese Verfahren und vorrichtungen zum herstellen eines muenzensammlungsbehaelters
US4200015A (en) * 1977-04-22 1980-04-29 Gerber Garment Technology, Inc. Closed loop method and apparatus for cutting sheet material
EP0110727A2 (fr) * 1982-12-07 1984-06-13 Keen Cutters Limited Machine pour dessiner ou couper des ellipses

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1148693B (de) * 1954-02-11 1963-05-16 United Shoe Machinery Corp Maschine zum Stanzen, Perforieren od. dgl.
DE2255312A1 (de) * 1972-11-11 1974-05-22 Guenter Wendt Rotations-schneidewerkzeug
DE2554075A1 (de) * 1975-12-02 1977-06-08 Emil Giese Verfahren und vorrichtungen zum herstellen eines muenzensammlungsbehaelters
US4200015A (en) * 1977-04-22 1980-04-29 Gerber Garment Technology, Inc. Closed loop method and apparatus for cutting sheet material
EP0110727A2 (fr) * 1982-12-07 1984-06-13 Keen Cutters Limited Machine pour dessiner ou couper des ellipses

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1002009A4 (nl) * 1988-05-26 1990-05-15 B & S Computing B V B A Snijapparaat voor bladvormige produkten.
EP0494483A1 (fr) * 1991-01-09 1992-07-15 Mimaki Engineering Co., Ltd. Procédé pour le changement de direction de l'arête de coupe d'un traceur à découper
EP0719620A2 (fr) * 1994-12-27 1996-07-03 Seiko Epson Corporation Méthode et dispositif pour couper un produit laminé en feuilles
EP0719620A3 (fr) * 1994-12-27 1997-03-26 Seiko Epson Corp Méthode et dispositif pour couper un produit laminé en feuilles
CN1045409C (zh) * 1994-12-27 1999-10-06 精工爱普生株式会社 层积片的切割方法及其装置
EP0780200A1 (fr) * 1995-12-22 1997-06-25 Wolfgang Dipl.-Ing. Bruder Dispositif pour la coupe de matériaux plans et souples tels que la peau ou l'étoffe
EP0871016A1 (fr) * 1997-04-09 1998-10-14 Gerber Scientific Products, Inc. Plotter équipé de roues d'entraínement à picots ainsi que d'une surface fixe de suport pour la feuille entre lesdites roues
US5868507A (en) * 1997-04-09 1999-02-09 Gerber Scientific Products, Inc. Plotter having sprockets for driving sheets relative to a tool carriage and a fixed sheet support extending between the sprockets
FR2792762A1 (fr) * 1999-04-23 2000-10-27 Atea Procede de decoupe d'une tole de maintien d'une feuille de materiau neutrophage sur une paroi d'une alveole de ratelier de stockage d'assemblages de combustible nucleaire
BE1013308A3 (fr) * 1999-04-23 2001-11-06 Atlantique De Tech Avancees At Procede de decoupe d'une tole de maintien d'une feuille de materiau neutrophage sur une paroi d'une alveole de ratelier de stockage d'assemblages de combustible.

Also Published As

Publication number Publication date
ZA876340B (en) 1988-03-02

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