EP0252844A1 - Automatische Vorrichtung zum Bearbeiten, insbesondere zum Schneiden von Bändern - Google Patents

Automatische Vorrichtung zum Bearbeiten, insbesondere zum Schneiden von Bändern Download PDF

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Publication number
EP0252844A1
EP0252844A1 EP87401607A EP87401607A EP0252844A1 EP 0252844 A1 EP0252844 A1 EP 0252844A1 EP 87401607 A EP87401607 A EP 87401607A EP 87401607 A EP87401607 A EP 87401607A EP 0252844 A1 EP0252844 A1 EP 0252844A1
Authority
EP
European Patent Office
Prior art keywords
frame
machine
chassis
machine according
strip
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.)
Granted
Application number
EP87401607A
Other languages
English (en)
French (fr)
Other versions
EP0252844B1 (de
Inventor
Guy Dumargue
Phythanara Ing
Jean-Luc Larcher
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.)
Airbus Group SAS
Original Assignee
Airbus Group SAS
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 Airbus Group SAS filed Critical Airbus Group SAS
Publication of EP0252844A1 publication Critical patent/EP0252844A1/de
Application granted granted Critical
Publication of EP0252844B1 publication Critical patent/EP0252844B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H16/00—Unwinding, paying-out webs
    • B65H16/10—Arrangements for effecting positive rotation of web roll
    • B65H16/103—Arrangements for effecting positive rotation of web roll in which power is applied to web-roll spindle
    • 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 relates to an automatic machine for processing strip material such as laminate, fabric or any other material which can be stored in the form of a roll.
  • the invention applies in particular to the case where the treatment carried out on such a machine consists in cutting the material along any line, for example by means of a fluid jet under high pressure.
  • This application is not, however, limiting and the invention can also be used on any other machine such as a draping machine, an embroidery machine, etc.
  • the present invention specifically relates to an automatic machine for processing a strip material, in which the loss of time following the replacement of the roll of material is reduced in considerable proportions, so that the working rate is not too affected by these replacements.
  • an automatic machine for the treatment of a strip material, this machine comprising a frame carrying at least one conveyor belt capable of moving the material in front of at least one station carrying out said treatment. , between an inlet end and an outlet end of the frame, a receptacle being provided for receiving a roll of the material to be treated, near the inlet end, characterized in that the receptacle is mounted on a chassis '' an interchangeable power supply module, one face of this chassis being able to be connected to the input end of the frame by means of connection and detachable positioning, the chassis of the power module also carrying a retractable strip for supporting the end of the material, said strip projecting from said face of the chassis under the action of elastic means, when the connection and positioning means are disconnected, ai nsi only gripping means for holding the material near the strip, means for controlling the release of these gripping means being mounted on the frame of the machine.
  • connection and positioning means comprise magnetic suction cups mounted at the entry end of the frame, metal plates placed opposite these suction cups on said face of the chassis and an electric switch for controlling the suction cups mounted at the input end of the frame and whose closing is controlled by a contact between said face of the chassis and the switch.
  • connection and positioning means also comprise at least one conical end centering device mounted at the entry end of the frame and at least one vertical oblong groove formed on said face of the chassis, facing the centralizer.
  • the pinching means for their part comprise a transverse arm articulated by its ends on the chassis of the power supply module and pads mounted on the transverse arm by means of swiveling connections, so as to be applied by gravity on the material when the connection and positioning means are disconnected.
  • the means for controlling the release of the clamping means can then comprise at least one pusher capable of lifting the transverse arm when the connection and positioning means are connected.
  • the material roll is mounted on a mandrel having a tubular end
  • the machine further comprising an annex frame linked to the frame and disposed on the side of the supply module when the connection means and positioning are connected, this annex chassis carrying an engine assembly including a pneumatic clutch capable of being introduced into the tubular end of the mandrel under the action of translation means by which this engine assembly is mounted on the annex chassis.
  • the chassis of the supply module preferably carries a transverse roller for tensioning the material, capable of being received in a loop of the material formed between the roller of material received on the receptacle and the clamping means, this roller moving by gravity in vertical guides formed in the chassis of the power supply module, upper and lower limit switches being mounted on the auxiliary chassis.
  • the frame of the machine carries, near its inlet end, at least one pressure roller with an axis slightly inclined with respect to a direction transverse to the direction of movement of the belt, so as to apply a transverse force on the material directed towards a lateral guide carried by the frame.
  • this machine comprises a cutting tool carried by a mobile carriage in a direction transverse to the direction of movement of the belt; material marking means can also be supported by the mobile carriage.
  • these marking means comprise a gripping clamp mounted on the mobile carriage by means of means for moving the clamp between a high position and a low position, a marker, and a cap carried by the frame and in which can be fitted an active end of the marker, the latter further comprising a gripping area capable of being fitted into said clamp.
  • the cap can in particular be mounted in the frame by means of means for moving this cap between a low retracted position and a high position in which the gripping zone is at the level of the clamp, when the latter is in the low position.
  • the clamp may include two articulated jaws, normally maintained in the closed position by elastic means.
  • FIGs 1 and 2 there is shown a cutting machine by high pressure fluid jet produced in accordance with the invention.
  • This machine comprises a frame 10 representing in top view an elongated rectangular shape, the short sides of which respectively form an inlet end 10a and an outlet end 10b of the material M to be cut.
  • the frame 10 rests on the ground and is divided lengthwise into two approximately equal parts, each supporting a series of notched and juxtaposed conveyor belts 12 and 14.
  • the belts 12 are stretched longitudinally between two transverse rollers 16, the one is placed at the inlet end of the frame 10 and the belts 14 are stretched longitudinally between two transverse rollers 17 one of which is placed at the outlet end 10b of the frame, the other two rollers 16 and 17 being arranged side by side in the center of the machine.
  • rollers 16 and 17 are all parallel to each other and arranged at the same level on the frame 10, so that the upper faces of the belts form a movable horizontal table capable of receiving the material M to be cut.
  • One of the rollers 16 and 17 over which each of the series of belts 12 and 14 passes is connected to a drive motor (not shown) capable of moving these belts in either direction in a longitudinal direction, as indicated by arrow F1 in FIG. 2.
  • the control of the advance of the two sets of toothed belts 12 and 14 is carried out synchronously.
  • the belts 12 and 14 thus make it possible to move the strip material M in front of a cutting station 18 located in the central part of the machine, between the two sets of belts 12 and 14.
  • This cutting station 18 firstly comprises a fixed horizontal table 20, of small width, ensuring the support of the material to be cut between the adjacent ends of series of toothed belts 12 and 14.
  • the cutting station 18 further comprises a movable carriage 22 able to move on horizontal columns such as 24 arranged transversely, under the action of control means.
  • control means comprise for example a chain or a toothed belt 26 whose ends are fixed on the carriage 22.
  • This belt 26 is stretched transversely between two toothed wheels 28 mounted on the frame 10 and one of which is connected to a motor (not shown) ensuring its training. Thanks to this arrangement, the carriage 22 can be moved in either direction in a transverse direction, as indicated by the arrow F2 in FIG. 2.
  • the carriage 22 supports a cutting nozzle 30 located vertically above the fixed table 20.
  • This nozzle 30 is connected to a high pressure fluid supply installation, in a manner known per se and not shown in the figure.
  • the fixed table 20 is pierced over the entire width of the material M with a transverse slot 20a under which is disposed a jet recovery device of any known type.
  • This device may particularly be the one described in the French patent application No. 83 16466 in the name of Societe Nationale Industrielle Aerospatiale.
  • the carriage 22 also supports a gripper 32 capable of grasping a marker to perform a preliminary marking on the material to be cut.
  • This clamp 32 is mounted on the carriage 22 on the side opposite to the cutting nozzle 30.
  • the clamp 32 comprises a support 34, one end of which is articulated on the carriage 22 by an axis 36 oriented parallel to the direction of longitudinal movement F1 of the machine.
  • the support 34 carries two jaws 38 articulated on the support by two axes 40 oriented in a direction orthogonal to the axis 36, and approximately vertical.
  • a spring 42 placed between the jaws 38, maintains the latter in a clamping or gripping position.
  • the gripping surfaces 38a vis-à-vis the jaws 38 remain spaced from one another. At their ends, these surfaces 38a end in a chamfer allowing the automatic nesting of the marker, as will be seen later, the gripping surfaces extending behind these chamfers by concave parts having a view from above in the form of arcs of circle.
  • the support 34 in its median zone comprised between its articulation axis 36 and the axes 40 carrying the jaws 38, the support 34 is interposed between a lower stop 44 secured to the carriage 22 and the vertical rod 46a an electromagnet 46 also carried by the carriage.
  • a leaf spring 48 fixed on the lower stop 44 maintains the support 34 permanently in abutment against the rod 46a of the electromagnet.
  • the clamp 32 can occupy two positions depending on whether the electromagnet 46 is energized or not.
  • the rod 46a applies the support 34 of the clamp against the lower stop 44.
  • the clamp 32 then occupies a low position of substantially horizontal gripping, in which the axes of the parts in an arc of the gripping surfaces 38a are vertical.
  • the marking means further comprise a marker 50 whose active lower end 50a carrying the tip 50b is received in a cap 52, of vertical axis, when it is not used.
  • This cap 52 is mounted in the frame 10 of the machine, in a cylindrical recess with a vertical axis 54 opening onto the side of the series of belts 12 towards which the clamp 32 is turned, the axis of this recess 54 being located in the vertical median plane of the clamp 32.
  • means are provided for moving the cap 52 between a low position in which the marker 50 is retracted and a high position allowing the gripper to be gripped by the clamp 32 (arrow F4).
  • the translational movement F4 is obtained by pneumatic cylinder.
  • the marker 50 has a gripping zone 50c which is located at the jaws 38 of the clamp 32 when the latter is in the low position and when the cap 52 is in the high position.
  • the cap 52 is then retracted downwards under the action of the jack, to release the lower end 50a of the marker. Under these conditions, the tip 50b of the marker is located at the upper face of the material to be cut. To allow the marker 50 to be brought to the marking zone, the excitation of the electromagnet 46 is therefore interrupted in order to bring the tip 50b of the marker to a level situated substantially above the upper face of the material. .
  • the marking is then carried out after excitation of the electromagnet 46, by combining the transverse displacements of the carriage 22 according to arrow F2 and the longitudinal displacements of the material according to arrow F1. At the end of each trace, the excitation of the electromagnet 46 is interrupted.
  • pressure rollers 60 are used located above the belts and only one of which is shown to simplify in FIG. 1. These pressure rollers, arranged transversely and whose axes are horizontal, eliminate relative sliding between the material and the belts.
  • the rollers 60 are preferably retractable as illustrated in particular in FIG. 6.
  • the rollers 60 are fixed at their ends to the ends of two levers 62 articulated around a horizontal axis 64 and whose opposite ends are connected to a jack 66.
  • the shaft 64 and the body of the jack 66 are fixed to the frame 10 of the machine.
  • the jack 64 makes it possible both to apply the corresponding roller 60 with a certain force to the material, and to retract this roller when necessary.
  • the machine When the material to be cut has a notched edge, the machine is generally equipped over its entire length with a guide strip 68 (FIG. 2) adjacent to one of the lateral belts 12 and 14.
  • the pressure roller 60 located near the inlet end 10b of the machine frame has its horizontal axis slightly inclined with respect to the transverse direction corresponding to the arrow F2. More precisely, the end of this roller 60 adjacent to the strip 68 is closer to the inlet end 10b of the frame than the opposite end of this roller 60.
  • this particular arrangement of the roller 60 located at the entrance to the machine has the effect of applying a transverse force t directed towards the guide strip 68 on the material. The contact of the edge of the material with this strip is thus assured.
  • the machine comprises interchangeable supply modules 70 on which the rolls of material M to be cut can be prepared in advance.
  • An interchangeable module 70 will now be described in detail, in particular with reference to FIGS. 7 to 10.
  • the power supply module 70 comprises a rigid chassis 72 resting on the ground for example by rollers 74 allowing its displacement.
  • This chassis 72 has a front face 72a intended to be placed opposite the inlet end 10a of the frame of the machine.
  • disconnectable connection means also ensuring the lateral positioning of the module relative to the frame.
  • connection and positioning means comprise two magnetic suction cups 76 mounted on the front end 10a of the machine frame, opposite two metal plates 78 located on the front face 72a of the machine. power module chassis 70.
  • An electrical switch 80 also placed on the front end of the machine frame automatically controls the excitation of the magnetic suction cups 76 when the front face of the power module chassis is brought into contact with the entry end of the machine frame.
  • these disconnectable connection and positioning means further comprise a centralizer 82 with conical end, projecting from the inlet end 10a of the frame of the machine.
  • this centralizer 82 penetrates into an oblong groove 84, oriented vertically, formed in the plate 78 placed opposite the centralizer 82. It should be noted that the lateral positioning thus obtained is sufficient to ensure satisfactory positioning of the feed cassette relative to the machine frame. In fact, the positioning in height is achieved by construction.
  • the frame 72 of the supply cassette 70 forms a receptacle for the roll of material M to be cut. More precisely, the roll of material M is mounted on a revolution mandrel 88, the ends of which rest on V-shaped notches 86 constituting the receptacle.
  • the end of the material M is arranged as illustrated in particular in FIGS. 7 and 9, so as to form a loop.
  • the material M passes first over an idler roller 92, then under a movable tension roller 94, and finally over a second idler roller 96.
  • the axes of the rollers 92, 94 and 96 are arranged transversely, parallel to the axis of the mandrel 88 when the latter is received on its receptacle.
  • the axes of the rollers 92 and 96 are then located approximately at the same level as the axis of the mandrel 88, while the axis of the roller 94 is permanently located at a lower level.
  • the ends of the tension roller 94 are housed in vertical grooves 98 (FIG. 8) formed on the lateral faces of the frame 72, so that it rests by gravity on the material M to keep it under tension at all times.
  • the end of the strip of material M is placed on the flat and horizontal upper face of a retractable support strip 100.
  • the level of this upper face coincides with the level of the movable table formed by belts 12 and 14.
  • the strip 100 is supported by the frame 72 of the module 70 so as to be able to move horizontally in approach and away from the front face 72a on columns 102. As illustrated in particular in FIG. 9, when the module 70 is separated from the frame of the machine, springs 104 placed on the columns 102 keep the strip 100 spaced from the front face 72a of the chassis. Under these conditions, the front edge of the strip of material M is aligned with the front edge of the strip 100.
  • the docking of the supply module 70 on the frame of the machine has the effect of pushing the strip 100 towards the front face 72a, against springs 104.
  • the end of the strip of material M is thus progressively engaged on the end of the series of belts 12.
  • these pinching means comprise a horizontal transverse arm 108 whose ends are fixed on levers 110 articulated at 112 on parts of the vertical plates 90 projecting upwards between the rollers 92 and 96.
  • the transverse arm 108 On its underside, the transverse arm 108 carries pads 114, by means of swiveling connections.
  • the pads 114 normally rest by gravity on the material M, so that the latter is pinched between the pads 114 and a horizontal bearing face of the frame 72 immediately adjacent to the front face 72a of the last.
  • the pads 114 are moved away from the strip material M under the action of a jack 116 mounted in the frame 10 of the machine. More precisely, the jack 116 is equipped with a push rod 116a projecting vertically upwards so as to raise one of the levers 110 when the jack is actuated. The end of the material M is then released and this material can be brought to the cutting station 18 by the conveyor belts 12.
  • an engine assembly 118 (FIGS. 2 and 7) mounted on an auxiliary frame 120 rigidly connected to the frame 10 of the machine.
  • This additional chassis 120 is arranged on the side of the module supply 70 when the latter is connected to the frame, so that the output shaft of the motor assembly 118 is then aligned with the axis of the mandrel 88 carrying the roll of strip material M.
  • the motor assembly 118 comprises a motor 122 controlling the rotation of a pneumatic clutch 124 capable of being housed in a tubular end 88a formed for this purpose in the mandrel 88.
  • the motor assembly 118 is supported by the auxiliary chassis 120 of so as to be able to move transversely between a rear position shown in FIGS. 2 and 3, allowing the insertion and removal of the module 70, and a front drive position, in which the pneumatic clutch 124 is housed in the tubular end 88a of the mandrel.
  • the movement of the motor assembly 118 is controlled by any suitable means shown diagrammatically at 126 in FIG. 7.
  • the roller 94 ensuring the tension of the material M on the supply cassette can also be used to control the length of the unwound strip and, consequently, the actuation of the motor 122.
  • the end of the roller 94 adjacent to the auxiliary frame 120 can come into contact with a low contact 128 requiring the engine 122 to stop or with a high contact 130 whose engagement requires on the contrary the implementation of the engine 122. These two contacts make it possible to complete the machine automation.
  • the cassette supply 70 between the station in which an operator ensures the establishment of the material M in the manner described above with reference to Figures 3 and 5 and the docking of the cassette on the machine can be done automatically.
  • the cassette can take the form of a wire-guided cart or use any other similar robotic movement technique.
  • feed cassettes 70 in accordance with the invention makes it possible to facilitate the change of the material when the roll is finished. Indeed, the preparation of a cassette can be done in peace without penalizing the performance of the machine. On the contrary, this yield is significantly increased, as are operating costs.
  • the feed cassette 70 could be used in any other automatic machine ensuring the processing and / or control of a roll material of any kind.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Treatment Of Fiber Materials (AREA)
EP19870401607 1986-07-10 1987-07-08 Automatische Vorrichtung zum Bearbeiten, insbesondere zum Schneiden von Bändern Expired - Lifetime EP0252844B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8610068 1986-07-10
FR8610068A FR2601346B1 (fr) 1986-07-10 1986-07-10 Machine automatique pour le traitement d'un materiau en bande et notamment pour la decoupe d'un tel materiau

Publications (2)

Publication Number Publication Date
EP0252844A1 true EP0252844A1 (de) 1988-01-13
EP0252844B1 EP0252844B1 (de) 1990-09-19

Family

ID=9337301

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870401607 Expired - Lifetime EP0252844B1 (de) 1986-07-10 1987-07-08 Automatische Vorrichtung zum Bearbeiten, insbesondere zum Schneiden von Bändern

Country Status (3)

Country Link
EP (1) EP0252844B1 (de)
DE (1) DE3765035D1 (de)
FR (1) FR2601346B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2695059A1 (fr) * 1992-09-01 1994-03-04 Lectra Systemes Sa Installation de découpe de matériaux en feuille.
EP0754641A1 (de) * 1995-07-21 1997-01-22 Gerber Garment Technology, Inc. In Abschnitte unterteilte Tänzerwalze und Fördermechanismus für bahnförmiges Material
US5819620A (en) * 1992-09-01 1998-10-13 Lectra Systemes Installation for cutting sheet material

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2451330A (en) * 1945-08-23 1948-10-12 Moore Business Forms Inc Sheet feed for writing machines
US4298276A (en) * 1977-06-24 1981-11-03 Olympus Optical Company Limited Cassette type roll sheet feeding apparatus
GB2139984A (en) * 1983-03-24 1984-11-21 Noritsu Kenkyu Center Co Magazine
EP0145527A2 (de) * 1983-10-17 1985-06-19 Aerospatiale Societe Nationale Industrielle Wasserstrahlschneidvorrichtung für Bänder

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2451330A (en) * 1945-08-23 1948-10-12 Moore Business Forms Inc Sheet feed for writing machines
US4298276A (en) * 1977-06-24 1981-11-03 Olympus Optical Company Limited Cassette type roll sheet feeding apparatus
GB2139984A (en) * 1983-03-24 1984-11-21 Noritsu Kenkyu Center Co Magazine
EP0145527A2 (de) * 1983-10-17 1985-06-19 Aerospatiale Societe Nationale Industrielle Wasserstrahlschneidvorrichtung für Bänder

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2695059A1 (fr) * 1992-09-01 1994-03-04 Lectra Systemes Sa Installation de découpe de matériaux en feuille.
WO1994005174A1 (fr) * 1992-09-01 1994-03-17 Lectra Systemes Installation de decoupe de materiaux en feuille
US5819620A (en) * 1992-09-01 1998-10-13 Lectra Systemes Installation for cutting sheet material
EP0754641A1 (de) * 1995-07-21 1997-01-22 Gerber Garment Technology, Inc. In Abschnitte unterteilte Tänzerwalze und Fördermechanismus für bahnförmiges Material
US5772147A (en) * 1995-07-21 1998-06-30 Gerber Garment Technology, Inc. Apparatus for performing a work operation on sheet material and a sheet material feed mechanism therefor

Also Published As

Publication number Publication date
FR2601346B1 (fr) 1989-03-31
EP0252844B1 (de) 1990-09-19
DE3765035D1 (de) 1990-10-25
FR2601346A1 (fr) 1988-01-15

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