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
  • B65H23/00—Registering, tensioning, smoothing or guiding webs
  • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
  • B65H23/032—Controlling transverse register of web
  • B65H23/0326—Controlling transverse register of web by moving the unwinding device
• • A—HUMAN NECESSITIES
  • A41—WEARING APPAREL
  • A41H—APPLIANCES OR METHODS FOR MAKING CLOTHES, e.g. FOR DRESS-MAKING OR FOR TAILORING, NOT OTHERWISE PROVIDED FOR
  • A41H43/00—Other methods, machines or appliances
  • A41H43/005—Cloth spreading or piling apparatus in view of its 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
  • 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
  • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
  • B26D5/005—Computer numerical control means
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
  • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
  • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
  • B26D5/20—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed
  • B26D5/30—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member controlled by scanning a record carrier
  • B26D5/34—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member controlled by scanning a record carrier scanning being effected by a photosensitive device
• • 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
  • B26D7/27—Means for performing other operations combined with cutting
• • 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
  • 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
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H23/00—Registering, tensioning, smoothing or guiding webs
  • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
  • B65H23/06—Registering, tensioning, smoothing or guiding webs longitudinally by retarding devices, e.g. acting on web-roll spindle
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H26/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms
  • B65H26/06—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to predetermined lengths of webs
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
  • B65H35/0006—Article or web delivery apparatus incorporating cutting or line-perforating devices
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
  • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
  • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
  • B26D5/08—Means for actuating the cutting member to effect the cut
• • 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
  • B26F3/00—Severing by means other than cutting; Apparatus therefor
  • B26F3/004—Severing by means other than cutting; Apparatus therefor by means of a fluid jet
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
  • B65H2511/50—Occurence
  • B65H2511/51—Presence
  • B65H2511/512—Marks, e.g. invisible to the human eye; Patterns
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S83/00—Cutting
  • Y10S83/929—Particular nature of work or product
  • Y10S83/936—Cloth or leather
  • Y10S83/937—From continuous or wound supply
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/04—Processes
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/04—Processes
  • Y10T83/0405—With preparatory or simultaneous ancillary treatment of work
  • Y10T83/0443—By fluid application
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/04—Processes
  • Y10T83/0524—Plural cutting steps
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/04—Processes
  • Y10T83/0605—Cut advances across work surface
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/141—With means to monitor and control operation [e.g., self-regulating means]
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/162—With control means responsive to replaceable or selectable information program
  • Y10T83/173—Arithmetically determined program
  • Y10T83/175—With condition sensor
  • Y10T83/178—Responsive to work
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/202—With product handling means
  • Y10T83/2066—By fluid current
  • Y10T83/207—By suction means
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/202—With product handling means
  • Y10T83/2092—Means to move, guide, or permit free fall or flight of product
  • Y10T83/2192—Endless conveyor
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/444—Tool engages work during dwell of intermittent workfeed
  • Y10T83/4458—Work-sensing means to control work-moving or work-stopping means
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/525—Operation controlled by detector means responsive to work
  • Y10T83/533—With photo-electric work-sensing means
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/525—Operation controlled by detector means responsive to work
  • Y10T83/536—Movement of work controlled
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/525—Operation controlled by detector means responsive to work
  • Y10T83/541—Actuation of tool controlled in response to work-sensing means
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/647—With means to convey work relative to tool station
  • Y10T83/6579—With means to press work to work-carrier
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/869—Means to drive or to guide tool
  • Y10T83/8821—With simple rectilinear reciprocating motion only
  • Y10T83/8822—Edge-to-edge of sheet or web [e.g., traveling cutter]
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/889—Tool with either work holder or means to hold work supply
  • Y10T83/896—Rotatable wound package supply
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/889—Tool with either work holder or means to hold work supply
  • Y10T83/896—Rotatable wound package supply
  • Y10T83/902—Plural supply sources

Definitions

• the invention relates to a fabric cutting system, a fabric feed system and a method for cutting fabric.
• a stock feeder is, for example, from the
• EP-A-0 589 089 known. It is driven as a trough
• the fabric web thus processed is placed on a conveyor belt assigned to the fabric unwinding device and transferred by this to a further conveyor belt assigned to a separate cutting device (and thus fed to the cutting device as a whole, from which the name of the system originates).
• the aim of the invention is to provide a fabric cutting system which overcomes the disadvantages of the prior art. This also includes the provision of a corresponding process for cutting fabrics. The invention is also intended to provide an improved stock feed system.
• a fabric cutting system which has the following: at least one fabric unwinding device for a bale of fabric, a conveyor belt for transporting the unwound fabric and a cutting device which cuts a sectional image from the fabric web laid out on the conveyor belt, the conveyor belt continuously moving at least from the place where the fabric is deposited by the unwinder extends to the working area of the cutting device and the unwinder places the fabric directly on the conveyor belt or on one or more panels already laid thereon. Due to the use of the continuous conveyor belt, the control of the fabric cutting system has highly precise information about the position of the fabric in the working area of the cutting device. In addition, this measure facilitates wrinkle-free and straight application of the fabric. As a result, the sectional image can be positioned more precisely on the fabric, so that the cutting can be carried out with greater accuracy.
• the fabric unwinding device is equipped with a fabric cutting device (in the case of several fabric unwinding devices, these are each advantageously equipped with a fabric cutting device).
• the cutting device allows a simple removal of a remnant of fabric by not cutting on the cutting device, but on the unwinding device. In principle, this rest could also run on the conveyor belt.
• the cut off fabric usually has a length of 0.2 m to 1 m and can be wound up and removed by an operator or the fabric cutting system (see below).
• the fabric unwinding device is equipped with a fabric tensile device, which holds the fabric when cutting with the fabric cutting device.
• the device designed so that they can / can rewind the fabric automatically after cutting with the fabric cutting device onto the rest of the fabric bale (possibly a wrapping tube). This allows a particularly quick changeover to a new bale of fabric.
• the cutting of the fabric can - as I said - be done for two different reasons: One possible reason is reaching the end of a cut pattern if the following cut pattern is to be cut from another fabric (e.g. a fabric with a different color or pattern). The necessary cutting signal then comes from the control of the fabric cutting system, which has knowledge of the cutting patterns to be cut. Another reason is that the end of the fabric on the bale of fabric has reached the end. According to
• Claim 5 is / are the fabric unwinding device (s) equipped with a fabric end sensor that detects the reaching or approaching the fabric end, preferably by detecting the complete or extensive unwinding of the fabric bale.
• the fabric end sensor system is formed by a light barrier through which the fabric web is preferably passed in the area of the unwinding device.
• the control of the fabric cutting system advantageously stops the unwinding process when the end of the fabric is recognized and causes the fabric to be cut off. Due to the continuous conveyor belt, the control knows with high accuracy the arrival of the web end at the cutting device and can therefore synchronize the completion of the cutting process accordingly.
• the control interrupts the cutting process at the latest when the calculated arrival of the fabric end at the cutting device and continues it when a restart signal is received after the arrival of a further fabric web.
• the arrival time is advantageously calculated on the basis of the conveyor belt speed and the distance between the fabric cutting device or fabric end sensor system and the cutting device. Due to the use of a continuous conveyor belt, the fabric end sensor system can be arranged close to the fabric bale on the unwinding device (and not on the cutting device, although this would also be possible and would also lead to automatic detection of the fabric end).
• control can also automatically calculate the arrival time of the beginning of this material web at the cutting device. The basis for this is again the continuous conveyor belt.
• the arrival of a fabric near the work area is determined not on the basis of a calculation, but on the basis of a direct detection of the beginning of the fabric.
• This can be done optically, for example.
• the conveyor belt can be made in a special color, which differs from the fabric colors generally used.
• An optical sensor is sensitive on light reflected from the conveyor belt (which has the special color of the conveyor belt). When the fabric (which has a different color) arrives, the intensity of the detected light decreases, from which the arrival signal is obtained.
• Another possibility of substance detection is based on an optical measurement. This is because the distance between a distance measuring device above the conveyor belt and the visible surface of the conveyor belt is reduced if there is material on the conveyor belt.
• the measurement is based, for example, on the fact that light is focused on the conveyor belt and the light reflected from there is detected.
• the presence of the substance means that the focal point lies below the reflecting surface (now the substance), which manifests itself in a significant decrease in the detected reflection light intensity. Both measurement methods can be used alternatively or in combination.
• an automatic cutting zero point is set in the feed direction of the fabric web for the subsequent cutting process.
• This zero point is offset in the longitudinal direction by a predetermined distance (e.g. 2 cm) towards the inside of the fabric from the beginning of the fabric.
• the restart signal for the cutting process is preferably also generated.
• a selvedge of varying width from fabric bale to fabric bale must be taken into account.
• the selvedge is the edge area that differs in color and pattern from the rest of the fabric. More specifically, the zero point must be offset a predetermined distance from the inner edge of the selvedge to the inside of the fabric.
• the detection of the inner edge of the selvedge can be done automatically by optical means.
• a semi-automatic setting of the transverse zero is preferred. This is based on an automatic fabric bale tracking which compensates for uneven winding of the fabric in the transverse direction.
• An operator defines the position of the transverse zero point relative to the fabric edge.
• the operator sets the transverse zero point to 3 cm within the fabric ante in the case of, for example, a 2 cm wide selvedge.
• the fabric bale tracker then automatically moves the fabric bale during unwinding in such a way that the cross zero point always lies at a fixed transverse position of the conveyor belt (the cross zero point position).
• the knowledge of the fabric edge position required for this is formed by a fabric edge sensor in the manner of a light barrier, which has one or more light sources illuminating the fabric edge immediately after processing and one or more sensors for spatial detection of the material interrupted and / or of the light falling past the fabric.
• the control can, on the basis of the continuous conveyor belt, precisely determine whether a sectional image to be cut can still be completely cut out of the existing length of the residual material. According to the embodiment of claim 15, it is even possible that the control determines those templates of a sectional image that can be completely cut out before reaching the end of the fabric. The control saves those stencils that can no longer be cut out completely and causes these stencils to be cut out automatically from the new material after further processing.
• this can preferably be achieved in that - if a bale of fabric is reached within a sectional image - this is disassembled in terms of control by automatically recognizing those individual templates that cannot be completely cut from the old bale, and preferably after automatically recognizing the zero point cut in the feed direction from the next bale of fabric.
• These measures allow a significant reduction in the amount of waste.
• the individual templates often have to be provided with additional seams and topstitching. This can be the case, for example, for templates for the upholstery of a piece of upholstered furniture, in which the upholstery folds are produced by sewing the individual templates before the cover is sewn together.
• the templates are provided with markings along which the seam or quilting lines can then be placed.
• markings are preferably applied to the not yet cut fabric.
• markings generally have to be applied to the fabric.
• markings indicate where quilting seams are to be applied later.
• a marking device is provided for this.
• a marking head for example a spray head
• fabric processing is generally carried out in such a way that the necessary markings are first applied to the fabric by a corresponding method of the slide, and that the required fabric cuts are then made, again by appropriate movements of the slide.
• the embodiment according to claim 18 proposes that a marking device which is arranged separately from the cutting device and can be controlled independently of it is provided, and that cutting and marking take place simultaneously.
• the marking device is advantageously arranged between the unwinding device and the cutting device. By marking the fabric directly after unwinding from the fabric bale, the fabric webs are fed to the cutting device ready for cutting. Since the cutting device is now used exclusively for cutting, the machining speed can be increased by up to a factor of 2 by this measure. In the event of a malfunction of the cutting device or the marking device, a fabric cutting system of the prior art generally has to be stopped completely until the malfunction has been remedied.
• the marking device is also equipped with a cutting means (for example a cutting head) and / or the cutting device with a marking means (for example a marking head).
• a cutting means for example a cutting head
• a marking means for example a marking head
• the handling of the material and its conveyance on the conveyor belt can be carried out continuously or discontinuously.
• the fabric is pulled from the bale without interruption or delay and cut and, if necessary, marked during the feed.
• a feed mode is simpler, in which the unwinding device (s) and the conveyor belt are each stopped for cutting a cutting window and possibly for marking a "marking window".
• the fabric cutting system has a marking head which can be moved in the transverse direction and possibly in the feed direction of the fabric web.
• This can be equipped with a spray device which applies the line-like markings to the fabric web.
• A can dry powder can be sprayed on, which can be brushed out after further processing of the substance, but it is also possible to spray on an adhesive substance, for example a dye, which may be invisible without the aid of technical means (e.g. fluorescent lamp).
• the marking device is formed by a marking head which, like a plotter, applies the markings via a pen which is moved along the lines to be marked.
• a single pen can be used, but an interchangeable magazine can also be provided, from which the marking head removes the pen.
• the latter embodiment has the advantage that, on the one hand, the pens can be replaced without long set-up times when worn, and on the other hand, several pens for differently colored markings can be handled by the marking head.
• the pens can be, for example, chalk pens or other conventional marking pens.
• the movement of the marking head is preferably controlled by a control unit having a microprocessor. This control can be, for example, a CNC or DNC control known from machine tool construction.
• control is also the arrangement of the sectional image.
• the control preferably has an interface to which either a central control unit for controlling the unwinding device and
• Readable data formats are preferably the formats * .DXF AAMA or formats according to ISO 6983 that are common in textile processing, whereby the data are generally generated with the help of CAD systems.
• An adaptation to any data format is possible, for example, the control of the system can read and process proprietary formats from other machine manufacturers, such as the proprietary format of the French company LECTRA SYSTEMES.
• the program for controlling the marking head can either also be read in via the interface for the position data of the markings, or also in a permanent memory, for example an EPROM or one electrically erasable and rewritable EEPROM.
• the cutting device has a cutting head which can be moved in the transverse direction and possibly in the feed direction of the fabric web and whose position and cutting activity can be controlled by the control of the system.
• the cutting head control is preferably designed in the same way as the marking head control shown above.
• the two controllers can use one and the same or separate microprocessors.
• the two head controls can be part of the control of the entire fabric cutting system, which may have a single common microprocessor.
• the cutting head can have a cutting knife, which is designed, for example, as an electronically driven circular knife.
• the cutting knife is designed as a butt knife, which can preferably be excited by ultrasound, which ensures that the cutting movement takes place perpendicular to the fabric web even at rapid feeds.
• the cutting head can also be designed as a punch which punches out the templates from the fabric web.
• the cutting head is a laser beam cutting head.
• it has a laser beam source and corresponding focusing optics, which essentially focus the laser beam onto the fabric web.
• a protective glass nozzle can additionally be provided, which at the cutting point removes the oxygen contained in the air through reaction carrier gases, e.g. Nitrogen or noble gas, displaced.
• a smoke extraction device can be provided which sucks off any substances which may arise during the cutting in order to maintain the required occupational safety values (MAK values) at the workplace.
• the cutting head can also be used as a water jet Be designed cutting head, which has a water jet nozzle from which a high pressure water jet emerges for cutting material.
• the cutting device has a suitable collecting device for the cutting water on the side facing away from the cutting head.
• the fabric cutting system is designed such that two or more layers of fabric are laid one on top of the other on the conveyor belt. A corresponding number of fabric unwinding devices are used for this. Due to the continuous conveyor belt, the fabric panels can be positioned very precisely one above the other.
• each of the unwinding devices is assigned a marking device.
• the marking devices are arranged in such a way that they are able to apply the markings before placing another layer of fabric. They can be controlled in terms of time and place in such a way that the markings of the layers of fabric that are ultimately superimposed are congruent with one another.
• the pre-assembled multi-layer fabric is then fed to the cutting device. On the stencils that are then cut out, the marking patterns are congruent.
• the marking devices are advantageous between the individual unwinding devices or - with regard to the last marking device - between the last unwinding devices.
• Direction and the cutting device arranged and mark the fabric layer layer unwound from the associated unwinding device, before the next layer is possibly overlaid by the subsequent unwinding device.
• the marking devices and the take-off speed of the individual unwinding systems are controlled in synchronized time. All the marking devices preferably work simultaneously, each of which processes a marking window that is arranged at a later time in the order in which the material is ejected.
• the marking windows can belong to one or to different sectional images. After editing one marking window at a time, the fabric panels are brought forward; the next marking window is applied. In terms of control, the individual marking windows are synchronized so that the markings are congruent with one another in the finished fabric layer package.
• the second marking device applies to the second fabric layer exactly the marking pattern which, in a previous step, applied the first marking device to the first fabric layer.
• the markings of the first and second fabric layers are then superimposed.
• a continuous feed is also possible. The strips of fabric are pulled through under the marking devices during the marking.
• the fabric cutting system is advantageously equipped with at least one covering material feed arranged downstream of an unwinding device, which covers a covering layer on the fabric web that is laid out.
• a covering material for forming a vacuum seal can be placed on the top layer of fabric.
• Such a covered web of fabric can be cut by a vacuum during the later cutting
• Conveyor belt are sucked in, which reduces the risk of a relative displacement of the individual fabric layers during the cutting process.
• a suitable covering material can be, for example, a plastic film, a paper layer or a other sheet-like material.
• the air permeability of the cover material is preferably significantly lower than that of the fabric layers, so that there is sufficient fixation by suction. In other embodiments, the vacuum suction takes place without covering the top web. A sufficient suction effect can also be achieved solely through the relatively low air permeability of the material webs to be cut.
• the conveyor belt is provided with a rough and / or adhesive covering, which is able to hold the fabric web (s) securely without vacuum suction. It is preferably a felt covering. On the one hand, this saves the relatively complex suction device and, on the other hand, makes covering the fabric web obsolete.
• the feed of the unwinding device (s) or the. existing fabric tensioning device / s slightly smaller than the feed of the conveyor belt. This means that the fabric is placed on the belt with a certain tension.
• the fabric web is pressed against the conveyor belt by a pressure device, in particular in the form of a pressure roller.
• the marking device (s) can advantageously also be used for other marking of the pieces of fabric.
• a marking can, for example, mark the assignment of different pieces of fabric to a specific piece of furniture. This is particularly valuable if the pieces of fabric belonging to a piece of furniture come from different cut patterns (for example because the piece of furniture is given a differently colored cover) or if a cut pattern is cut partly from an old and partly from a new bale because of a bale of fabric.
• this assignment information or other information is applied with the aid of the marking device (s) to a so-called seam allowance. This is a piece of fabric that extends beyond a later seam.
• the information can be encoded or uncoded.
• the fabric cutting system can have a labeling device which the individual
• Templates of a sectional image or different sectional images are provided with labels so that the templates can be assigned to one another during further processing.
• the labeling device can be arranged both in front of and behind the cutting device and can be controlled via the system control.
• the unwinding device is advantageously designed as a rodless unwinding device, the bale of fabric resting on bearings arranged beneath it and for the unwinding of the fabric is set into rotation by a movement of the bearings in the take-off direction tangential to its lateral surface.
• the fabric cutting system can also have a clearing belt arranged downstream of the conveyor belt, which removes the templates which have been cut to size and, where appropriate, marked or distributed, for example, to different transport baskets.
• the clearing belt can also be formed by an extended area of the conveyor belt.
• the fabric cutting system advantageously has at least one monitor on which the pattern and / or the markings to be applied can be read.
• a fabric feed system is proposed with at least one fabric unwinding device (1,1 ') for a fabric bale (7), a conveyor belt (5) for transporting the unwound fabric, the unwinding device (1,1') directly on the fabric Conveyor belt (5) or on one or more webs already laid out there, the stock feeder having one or more features of claims 2-20, 22-28.
• a fabric cutting device is mentioned in these claims, the separate one is in this context
• Cutting part meant. If necessary, the separate cutting part is coupled in terms of control to the stock feed system according to the invention, so that, for example, the subject matter of claim 15 (determination and processing still separable stencils before the end of the fabric) is also extremely advantageous in the feed device according to the invention with the conventional cutting part supplied. An embodiment according to claim 23 is also particularly advantageous, according to which multi-layer marking is made possible. Existing cutting parts benefit greatly from this if they are operated together with a feed device designed in this way.
• Figure 1 is a side view of a fabric cutting system with two unwinding devices, but without
• Figure 2 is a plan view of that shown in Figure 1
• FIG 3 is a side view of a fabric cutting system similar to Figure 1, but with two
• Figure 4 is a plan view of that shown in Figure 3
• FIG. 5 is a schematic representation of a fabric with
• FIG. 6 Sectional view and templates to be cut;
• Figure 6 is a sectional view, the stencils are distributed over two different panels;
• Figure 7 is a side view of a fabric cutting system similar to Figure 1, which is robust against failures of the cutting device and the marking device;
• FIG. 8 shows a side view of a fabric unwinding system which is similar to the fabric cutting system from FIG. 3, but is not equipped with a cutting device.
• the fabric cutting system according to FIGS. 1 and 2 has two unwinding devices 1, 1 '.
• Each roll-like fabric bale 7 rests on a V-shaped belt arrangement 8 of the unwinding devices 1, 1 'with three rollers 9.
• the belts are preferably driven by the middle of the three rollers 9.
• the strand forces of the belt arrangement 8 are transmitted by friction to the fabric bale 7, which is thereby set in rotation and unwinds.
• the fabric cutting system is equipped with a conveyor belt 5, which extends from the point where the fabric is deposited by the first unwinding device 1 to the working area of a cutting device 3.
• the “first unwinding device” is understood to mean the one that is furthest away from the cutting device 3.
• the fabric is deposited directly on the conveyor belt 5 by the unwinding devices 1, 1 '.
• the direction of the conveyor belt feed is marked with an arrow.
• the second unwinding device 1 ' is active.
• the first unwinding device 1 is in the waiting state.
• the cutting device 3 thus cuts material which is discontinuously unwound from the bale 7 of the second unwinding device 1 'in each case by the length of a cutting window.
• the unwinding devices 1, 1 ' are each equipped with a material end sensor system (not shown).
• a material end sensor system (not shown). This consists, for example, of a light transmitter-light receiver unit and a reflector. It can be arranged so that the light beam runs over the two outer rollers 9 of the belt arrangement 8, so that the bale of material 7 interrupts the light barrier. If, on the other hand, the diameter of the fabric bale 7 falls below a certain value, it releases the light barrier, which is fed to a control unit (not shown) as the fabric end signal.
• This signal initiates a cutting off of the fabric already laid out on the conveyor belt 5 from the fabric remnant on the fabric bale 7.
• the fabric is held by a fabric tensioning device 10 and cut off by a fabric cutting device 11 arranged subsequently. Both are arranged on the unwinding devices 1, 1 ', in an area in which the already unwound material has not yet reached the conveyor belt 5. After cutting, the remainder of the fabric is wound back onto the fabric bale of the second unwinding device 1 '.
• the first unwinding device 1 While the end of the fabric web laid out on the conveyor belt 5 is being cut by the cutting device 3, the first unwinding device 1 has already unwound onto the conveyor belt 5. With a double belt feed, the fabric of the first unwinding device 1 reaches the working area of the cutting device 3, already designed, so that a bale of fabric is changed with only a slight interruption in work. The operator can now remove the remainder of the bale on the second unwinding device 1 'and place a new bale of fabric.
• a zero point adjustment is required to continue the cutting process with the new fabric.
• this zero point division takes place fully automatically in that a feed direction zero point sensor 11 detects the arrival of the front fabric edge in the working area of the cutting device. The detection is based on an optical recognition of the color of the fabric which differs from the color of the conveyor belt 5 and / or an optical recognition of the distance.
• the zero point is set semi-automatically. Specifically, the unwinding devices 1, 1 'can each be displaced in the transverse direction by a transverse drive (not shown).
• This is equipped with a tracking control which, on the basis of the signals from an optical web edge sensor, automatically moves the fabric bale in the transverse direction during unwinding so that the unwound web edge comes to lie in a constant transverse position. This prevents uneven handling of the material
• the zero zero setting therefore consists in that the operator, after inserting a new bale of fabric, moves the zero zero to a certain distance (e.g. 1 cm).
• This transverse zero point setting can be carried out before the actual work start of an unwinding device and therefore does not require any work interruption.
• the cutting device 3 comprises a carriage 16 which can be moved in the feed direction in the form of a crossbar 17 on which a cutting head 18 can be moved.
• the cutting head 18 is e.g. around a laser cutting head.
• the control unit (not shown) has saved the sectional images to be cut. These virtual sectional images can be displayed on a monitor 6.
• the control unit controls this on the basis of the stored sectional images Subtracting from the respective unwinding device 1 or 1 ', the cutting window feed of the conveyor belt 5, the automatic setting of the zero point in the feed direction, the movements of the cutting head 18 in the feed and transverse direction as well as its cutting activity, as well as cutting off the material and changing from one Unwinding device to another due to a change from one substance to another or due to a substance presupposed by the cutting task. Further details are described below in connection with FIGS. 5 and 6.
• a wrinkle-free laying out of the material on the conveyor belt 5 is achieved on the one hand by the fact that the material tensioning device 10 only allows a slightly lower material feed than would correspond to the feed of the conveyor belt 5. As a result, the fabric is laid out on the conveyor belt 5 under a certain tension. On the other hand, a pressure roller 19 is provided in each unwinding device 1, 1 ', which presses the fabric against the conveyor belt 5.
• the conveyor belt 5 is provided with a felt-like surface. The material adheres to this surface so well that it does not slip during the cutting process.
• the fabric cutting system allows the marking and cutting of multi-layered fabric.
• a marking device 2, 2 ' is arranged behind each unwinding device 1, 1', which applies markings for the stitching or seam lines to be applied later on the fabric web which has just been unwound.
• the markings consist, for example, of a self-volatilizing substance that is only visible in the ultraviolet or infrared spectral range.
• the latter is a spray head, for example, which the marking substance in the course of the Spraying the spray head movement and thereby applying line-like markings of any line shape to the fabric.
• Marking device has been marked and has been transported further by the conveyor belt 5, the second unwinding device 1 'places a second layer of fabric over it. This is marked by the second marking device 2 '.
• the marking processes are controlled in such a way that at the end the markings of the superimposed material webs are congruent.
• the conveyor belt 5 transports the ready-made multi-layer fabric to the cutting device 3, where all layers are cut together in one operation.
• a vacuum box 21 arranged in the working area of the cutting device 3 on the underside of the upper conveyor belt section sucks air through the conveyor belt and the material webs placed thereover. This causes the fabric to be pressed sufficiently against the conveyor belt to prevent it from slipping during the cutting process.
• the marking lines can be represented on the monitor 6.
• a clearing area 22 which is formed by an extended part of the conveyor belt 5.
• the ready-cut templates can be sorted manually by the operating personnel or they can be fed to an automatic distribution and sorting system. Any incorrect cuts and waste pieces can also be sorted out here by hand.
• Figure 5 shows a fabric web before cutting.
• the selvedge 14 is located on a longitudinal edge, which usually has a width of 2 cm.
• the (virtual) zero point 23 is located somewhat in the transverse direction within the inner edge of the selvedge (for example 0.2 mm), and somewhat in the feed direction within the front edge of the fabric (for example 1 cm).
• On the fabric the cutting lines of the templates 24 to be cut are shown.
• the term "template” refers to a cut-out piece of fabric in the fabric cutting technique.
• the marking head 20 of the cutting device 3 is moved along these virtual cutting lines, so that it cuts out the stencils 24 shown.
• Marking lines 25 are also drawn in. At first, these are also only available virtually in the memory of the control unit, but after the markings have been made they are visible on the fabric in the form shown. Triangular markings 26 are also shown in the area of the cutting lines. These are also applied by the marking devices 2, 2 '. In later processing, they serve as markings for the seam end or seam beginning. Finally, the marking device 2, 2 'sprays information 27 into the seam allowances of the templates 24, for example a commission and template number, in order to facilitate assignment of the individual templates after cutting.
• the virtual sectional image is divided into several virtual sectional windows which correspond to this length.
• the control of the system is designed in such a way that after a feed by a cutting window length, the next cutting window is cut in each case, so that as a result the cutting image shown in FIG. 5 is processed piece by piece.
• FIG. 6 shows a sectional view in such a division into three sectional windows.
• the end of the fabric comes to lie in the middle of the central window.
• the control of the system automatically determines which of the virtual templates of this cutting window can still be cut out, and for which this is not the case. It causes the stencils 24 'which can still be completely cut out to be cut out of the end of the material web to be cut out, and the ones which can no longer be completely cut out Stencils 24 '' from the following new fabric. Before this, the control automatically sets the zero point 23 of the new fabric. This measure makes it possible to reduce the waste to a minimum and to continue working practically without interruption when changing the web.
• the fabric cutting systems shown are modular. As a result, embodiments other than those shown can be put together in a simple manner.
• an embodiment for single-layer fabric processing similar to FIG. 1 is particularly advantageous, but it additionally has a marking device behind the second unwinding device 1 ′ in the manner of the marking devices described in FIG. 3.
• Such an embodiment is shown in FIG. 7. It can be used to mark and cut in one layer, whereby very high processing speeds can be achieved due to the unwinding device which is present twice and the simultaneous execution of marking and cutting.
• the fabric cutting system of Figure 7 corresponds to the other, not mentioned features
• the marking device 2 (or - in the case of several marking devices as in FIGS. 3, 4 - the last marking device) is equipped with a cutting head 18 'to increase the robustness against failures.
• the cutting device 3 is equipped with a marking head 20 '.
• a vacuum box is located in the marking and cutting area.
• the additional heads 18 ', 20' are not used in normal operation. If one of the normally used heads 18, 20 fails, the additional heads 18 ', 20' are used. So there is a change of roles: the cutting device 3 now takes over the marking, the marking device 2 takes over the cutting. In this emergency operation mode, the marking takes place after trimming; mark the templates that have already been cut out.
• the cutting device 3 or the marking device 2 Due to the still simultaneous way of working, the normal working speed can be maintained.
• the cutting device 3 or the marking device 2 a more extensive emergency operation is used. Namely, the still operable device 2 or 3 functions by activating the marking head 20 'or the cutting head 18', marking and cutting now take place in succession. The system can then continue to operate despite the total failure, the processing speed being reduced due to the then no longer simultaneous operation.
• FIG. 8 shows a stock feed system that corresponds to the stock cutting system shown in FIG. 3. The only difference from that is that it does not have a cutting device 3 (and also no subsequent clearing area 22). Rather, the conveyor belt 5 ends directly after the last marking device 2 '. It is intended to be put together using a separate cutting device 3 '(only partially indicated in FIG. 8), which has its own conveyor belt 5'. All of the explanations for FIGS. 1-7 thus also apply to this stock feed system.
• the embodiment shown, like that according to FIG. 3, allows multi-layer marked fabric seams to be created before the templates are cut out together from the fabric web package.

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• Engineering & Computer Science (AREA)
• Life Sciences & Earth Sciences (AREA)
• Forests & Forestry (AREA)
• Mechanical Engineering (AREA)
• Textile Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Treatment Of Fiber Materials (AREA)

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• 1996
  • 1996-12-31 DE DE19654796A patent/DE19654796A1/de not_active Withdrawn
• 1997
  • 1997-11-20 WO PCT/EP1997/006500 patent/WO1998029324A2/fr active IP Right Grant
  • 1997-11-20 AU AU55539/98A patent/AU5553998A/en not_active Abandoned
  • 1997-11-20 DE DE19781499T patent/DE19781499D2/de not_active Expired - Lifetime
  • 1997-11-20 AT AT97951932T patent/ATE213485T1/de not_active IP Right Cessation
  • 1997-11-20 US US09/331,574 patent/US6283001B1/en not_active Expired - Fee Related
  • 1997-11-20 ES ES97951932T patent/ES2173506T3/es not_active Expired - Lifetime
  • 1997-11-20 CA CA002276582A patent/CA2276582A1/fr not_active Abandoned
  • 1997-11-20 EP EP97951932A patent/EP0954503B1/fr not_active Expired - Lifetime
  • 1997-11-20 DE DE59706463T patent/DE59706463D1/de not_active Expired - Fee Related
• 2001
  • 2001-08-07 US US09/923,689 patent/US20010045147A1/en not_active Abandoned

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