EP3312335B1 - Method and assembly for producing a blank from textile semi finished products - Google Patents

Method and assembly for producing a blank from textile semi finished products Download PDF

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Publication number
EP3312335B1
EP3312335B1 EP17197378.7A EP17197378A EP3312335B1 EP 3312335 B1 EP3312335 B1 EP 3312335B1 EP 17197378 A EP17197378 A EP 17197378A EP 3312335 B1 EP3312335 B1 EP 3312335B1
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EP
European Patent Office
Prior art keywords
cutting
offcuts
blank
finished product
textile semi
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.)
Active
Application number
EP17197378.7A
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German (de)
French (fr)
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EP3312335A3 (en
EP3312335A2 (en
Inventor
Yannis GROHMANN
Sven Torstrick
Ingmar HESSEN
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Deutsches Zentrum fuer Luft und Raumfahrt eV
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Deutsches Zentrum fuer Luft und Raumfahrt eV
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Publication of EP3312335A2 publication Critical patent/EP3312335A2/en
Publication of EP3312335A3 publication Critical patent/EP3312335A3/en
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Classifications

    • 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
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
    • B26D1/06—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
    • B26D1/10—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates in, or substantially in, a direction parallel to the cutting edge
    • B26D1/11—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates in, or substantially in, a direction parallel to the cutting edge with a plurality of cutting members
    • 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
    • B26D9/00—Cutting apparatus combined with punching or perforating apparatus or with dissimilar cutting apparatus
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
    • D06H7/00—Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
    • D06H7/00—Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials
    • D06H7/24—Devices specially adapted for cutting-out samples
    • 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
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/0033—Cutting members therefor assembled from multiple blades
    • 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
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/006—Cutting members therefor the cutting blade having a special shape, e.g. a special outline, serrations
    • 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

Definitions

  • the invention relates to a method for producing a blank from at least one textile semifinished product, wherein the blank is produced by means of a cutting device from the sheet-like semi-finished textile product.
  • the invention also relates to a system for producing such a blank from at least one textile semifinished product.
  • a blank is first produced from the semifinished fiber product (as a semi-finished textile product) by cutting the textile semifinished product according to a blank geometry by means of a cutting blade along the outer boundary of the blank geometry ,
  • the semifinished fiber product is usually separated into a blank from which the fiber composite component is produced, and into a waste which usually can not be reused in the further process chain.
  • the blank When dry fiber semifinished products are used, the blank is then infused with a matrix material of the fiber composite material and then cured, resulting in an integral unit of matrix material and fiber material.
  • the semifinished fiber product is placed on a cutting table, for example, so that the semifinished fiber product contacts the cutting surface in a planar manner on one side.
  • a cutting knife With a cutting knife, the semifinished fiber product is then cut to size on the cutting table according to the predetermined cutting geometry, so that next to the blank also a waste remains. Subsequently, the blank is removed from the cutting table and the further manufacturing process (infusing the matrix material, annealing of the component, producing the fiber composite component) supplied.
  • the object is achieved by the method according to claim 1 and the system according to claim 9 according to the invention.
  • a method for producing a blank from at least one textile semifinished product is specified, wherein first the at least one semi-finished textile product is introduced into a cutting tool.
  • a cutting tool can be, for example, a flat, mostly planar cutting table on which the textile semifinished product is deposited. But a cutting tool can also be a molding tool on which a Faserpreform from one or more semi-finished textile products, such as semi-finished fiber products, was produced, the Faserpreform should be trimmed after production endkontur.
  • a cutting tool in the context of the present invention is thus a tool with which a semi-finished textile product, in particular a semi-finished fiber product for producing a fiber composite component, cut using a cutting blade and thus a blank can be produced.
  • the at least one After introducing the at least one semi-finished textile product into the cutting tool, the at least one is now inserted into the cutting tool with the aid of a first cutting device in accordance with the present blank geometry of the blank introduced textile semifinished product cut to produce the cut from the textile semifinished product.
  • a plurality of blank elements can be cut out of the textile semifinished product, for example of different geometry, in order to minimize the waste.
  • the first cutting device may be, for example, a cutting portal, which has a moving machine on which a cutting blade is arranged to cut a laid down on a cutting table semi-finished fiber accordingly and produce the blank.
  • the blank is gripped by a gripping device and raised relative to the waste, so as to spatially separate the blank from the waste.
  • the waste is gripped by the gripping device and raised over the blank to spatially separate the blank from the waste.
  • the gap between the scrap may be less than 5 cm, advantageously less than 3 cm and most preferably less than 1 cm. The gap must only be at least so large that a cutting blade of a second cutting device, as described below, can be passed.
  • At least one cutting blade of a second cutting device is passed through the resulting gap between blank and waste, thereby ensuring that all fibers / threads not yet severed of the textile semifinished product are completely severed, so that after passing the at least one cutting blade of the second cutting device through the resulting gap, the blank is completely and reliably separated from the waste.
  • the first cutting device may be different from the second cutting device.
  • the first cutting device coincides partially or completely with the second cutting device and the cutting blade for cutting is at the same time the cutting blade which is passed through the resulting gap.
  • the at least one semifinished textile product can be placed on a tool surface of the cutting tool and cut on the tool surface by the first cutting device. This is usually the case when the cutting tool is a cutting table or a mold for producing a Faserpreform.
  • the blank is raised relative to the waste - or vice versa - in such a way that the cut plane spanned by the flat blank is different from the cut plane defined by the flat cut, so that blank and blanks lie on different levels when the cutting knife the second cutting device is passed through the resulting gap.
  • the at least one cutting blade of the second cutting device is guided through the resulting gap essentially parallel to the blank and / or waste, whereby damage, in particular to the blank, can be prevented ,
  • a second cutting device is provided for the method according to the invention such that at least two axially movable cutting blades are provided, which are moved in opposite directions axially when passing through the gap formed.
  • the axially movable cutting blades are formed so that they are alternately moved axially, so that the direction of movement changes continuously. Conversely, this means that the cutting blades are not moved substantially in the same axial direction during the axial movement.
  • the axial movement takes place transversely to the direction of passage through the gap.
  • the at least one cutting blade of the second cutting device is caused to oscillate during the passage through the gap, whereby an improved cutting force can be achieved without great pressure or counterpressure forces.
  • an improved cutting force can be achieved without great pressure or counterpressure forces.
  • a method for producing a fiber composite component from a fiber composite material which has a fiber material and a matrix material.
  • the fiber material is the semi-finished textile product, wherein a blank is automatically produced from at least one of the provided semifinished textile products in accordance with the abovementioned method and then the fiber composite component is produced from the produced blank.
  • the invention also includes a system for producing a blank from at least one semi-finished textile product, wherein the system is in particular adapted and designed to carry out the above-described method for producing a blank.
  • the system has a cutting tool into which the at least one semi-finished textile product can be introduced.
  • a cutting tool can have a tool surface onto which the at least one textile semifinished product can be deposited.
  • Such a cutting tool with a tool surface can be, for example, a cutting table or a molding tool.
  • the system furthermore has a first cutting device, which is designed to cut the at least one semi-finished textile product introduced into the cutting tool according to a predetermined cutting geometry of the blank. Furthermore, the system has a gripping device which is used to grasp the blank and raising the blank relative to the waste - or vice versa - is designed such that in the cross section of the textile semifinished product between the blank and the waste due to the lifting creates a gap, wherein blank and waste together form the at least one textile semifinished product.
  • the system has a second cutting device, which has at least one cutting blade which can be guided through the resulting gap between blank and waste, so as not or not completely severed fibers or filaments of the textile semi-finished, not completely from the first cutting device were severed, cut and thus the cutting of the blend final, complete and reliable separation.
  • the first cutting device can advantageously be a cutting portal which has at least one cutting blade movable relative to the cutting tool (designed in the form of a tool surface) for cutting the at least one semi-finished textile product introduced into the cutting tool.
  • a cutting portal is also referred to as a cutter system.
  • the first cutting device can also be an articulated-arm robot, which has as end-effector at least one cutting blade for cutting the at least one textile semifinished product introduced into the cutting tool.
  • an articulated-arm robot with a cutting knife as the end effector is used, for example, when a 3D preform has been introduced into a molding tool and manufactured there and the final geometry of the 3D preform are now formed using the cutting blade on the articulated arm robot in the mold should.
  • the textile semifinished product is cut within the molding tool, wherein advantageously the scrap increases and the blank remains on the molding tool.
  • the second cutting device is designed such that the at least one cutting blade can be guided substantially parallel to the blank and / or waste through the resulting gap.
  • This embodiment can be used advantageously, for example, if the first Cutting device is a cutting portal and the second cutting device is integrated into the cutting portal.
  • the at least one cutting blade of the second cutting device is designed so that it advantageously extends over the entire width of the cutting table of the cutting portal and between the raised blank (or waste) and the remaining on the table waste (or blank) is passed, so that in this case, the at least one cutting blade of the second cutting device is also passed between the cutting tool and the gripping device.
  • the second cutting device is designed so that at least two axially movable cutting blades are provided, which are formed in opposite directions during passage through the resulting gap.
  • the direction of the axial movement of a cutting blade alternates, so that a "back and forth” movement is generated in the axial direction.
  • the axial direction of movement is transverse to the direction of movement of the blade, when it is passed through the gap between blank and waste.
  • the at least one cutting blade of the second cutting device has a plurality of cutting teeth, which are aligned in the feedthrough direction. In combination with an axial, alternating movement of the at least one cutting blade thus creates a kind of sawing movement when the cutting blade is passed between blank and waste. Sawing also falls under the term "cutting" in the sense of the present invention in relation to the cutting blade.
  • the cutting teeth can have, for example, a triangular sectional plane or tooth shape, wherein the cutting teeth arranged with an edge side of the triangle to a cutting blade and the opposite tip of the triangle is aligned in the direction of passing direction between blank and waste.
  • the cutting teeth of the at least one cutting blade of the second cutting device on one or more barbs, so that when passing the cutting blade through the gap between blank and waste the not yet completely severed fibers or threads are caught in the barb and thus be severely cut process.
  • This is to prevent the threads from possibly slipping out of the working area of the cutting blade and not being severed, which can cause the threads to get caught in the cutting blade and then be torn out of the blank as the cutting knife passes through the gap.
  • Such defects in the later component, especially in the load-bearing fibers are unacceptable in many applications.
  • the at least one cutting blade of the second cutting device is vibrated while it is passed through the resulting gap between blank and waste, so as to improve the cutting result. This is particularly advantageous against the background that as little pulling force on the not yet severed fibers or filaments may be applied by the cutting blade in order to avoid separation of the fibers or threads from the blank.
  • the cutting blade has a particular elongate extension (in the axial direction), which is necessary, for example, in the integration of the second cutting device in a cutting portal, when the cutting blade is to extend over the entire space of the cutting portal.
  • Widths of up to 3 m are realized in industrially used cutter machines or cutting gantries, which would require extremely high material rigidity.
  • the available space is greatly limited by the specification of the minimum spatial separation between blank and waste and the smallest possible gap width, so that it is particularly premature if the cutting blade, in particular on the cutter bar, one or more support rollers, with which the Cutting knife can be supported on the cutting tool.
  • the support rollers can be designed in the form of spherical rollers be to allow also an axial movement. This avoids that the cutter bar must be cantilevered over the entire width of the cutting portal.
  • the invention also includes a system for producing a fiber composite component, to such a system generically a mold, depending on the fiber composite material used an injection unit for injecting a matrix material and a curing device, such as an autoclave, for annealing the matrix material and curing the same.
  • a system for producing a fiber composite component then has a system for producing a blank as described above, so as to be able to automate the process step of manufacturing the blank in a process-reliable manner.
  • Lifting the blank relative to the waste - or vice versa - is understood to mean, in particular, a lifting movement with respect to the non-lifted part, whereby the blank and waste are spatially separated into different planes, such lifting movement or lifting need not be axial to the soil solder run, but can for example also obliquely arranged cutting tool surfaces obliquely to the earth slot.
  • the term "lifting” is not limited to a pure lifting movement parallel to the soil, but merely means a spatial separation between blank and waste. This includes, in particular, a shifting and / or lowering.
  • gripping of the blank or trimming is understood to mean, in particular, that the gripping device holds the blank or waste on the gripping device and can spatially separate it from the respective other part.
  • a gripping device may for example be a needle gripper.
  • Conceivable are other gripping mechanisms, such as electrostatic or negative pressure.
  • Such a gripper is nevertheless a manipulator which spatially separates the blank from the waste, for example by lifting, lowering and / or moving.
  • a "cutting blade” is understood to be a blade which cuts the textile semifinished product without contact or contact. Can sever fibers / threads. Such a cutting blade can be a classic knife with or without knife teeth. It is also conceivable that the cutting blade unfolds its cutting action, for example by laser, water or sand, for example by other cutting mechanisms.
  • FIGS. 1a-1f show in a schematic representation of the individual process steps for producing a blank from a textile semifinished product, wherein in the embodiment of the FIGS. 1a-1f has been turned off for the purpose of explaining the method to the application of a cutting portal, in which the semi-finished textile deposited on a cutting table and then the cutting portal using a knife arranged on the portal according to the blank geometry cuts the blank from the textile semifinished product.
  • FIGS. 1a-1f show on the left side a plan view of the cutting portal, while on the right side is shown a side view.
  • FIG. 1a a cutting table or cutting table 10 is shown, which forms the cutting tool for the semi-finished textile product 1 to be cut.
  • a cutting portal 20 is arranged, which forms the first cutting device for producing a blank from the textile semifinished product 1.
  • the cutting portal 20 has a moving machine 21 with which a cutting head 22 can be positioned and moved over the cutting table. Below the cutting head 22 (not shown) is a cutting blade for cutting the semifinished textile product 1 according to a predetermined cutting geometry.
  • FIG. 1a the cutting head 22 of the cutting portal 20 is positioned together with the cutting blade (not shown) in a parking position in the upper right corner of the cutting table 10, so that the textile semifinished product 1 (in the unassembled version) can be placed on the cutting table.
  • the textile semifinished product 1 is introduced into the cutting tool 10.
  • the semi-finished textile product 1 can be positioned at a predetermined position on the cutting table 10, if, for example, as low as possible cutting the blank to be produced and the entire surface of the textile semifinished product 1 must be utilized. It is also conceivable that the cutting head 22 has corresponding sensors in order to be able to determine the position of the textile semifinished product 1 deposited on the cutting table 10 and thus moves the cutting pattern relative to the positioning of the textile semifinished product 1.
  • FIG. 1b It is shown that 1 of several blank elements are cut out of the textile semifinished product, which together form the blank.
  • the remaining of the blank rest of the textile semifinished product 1 is referred to as a waste 3.
  • FIG. Figure 1c After all blank elements of the blank 2 have been cut from the textile semifinished product 1 by means of the cutting portal 20, the cutting head 22 of the cutting portal 20 is moved back to a parking position, as shown in FIG Figure 1c is shown. Subsequently, a gripping device 30 is positioned from above in the direction of the cutting table 10, which in the embodiment of the FIGS. 1a-1f to raise the blank. As in Figure 1c 2, the gripping device 30 is positioned and moved in the direction of the blank 2 until the gripping device 30 contacts the blank 2 (FIG. Figure 1d ).
  • the gripping device 30 After the gripping device 30 contacts the textile semifinished product 1 and grips the blank 2 in accordance with the design of the gripping device 30, the gripping device 30 is raised, as a result of which the blank opposite to the one on the Cutting table 10 remaining waste is raised.
  • FIG. 1b shown in side view the blank 2 is gripped and lifted by the gripping device 30, so that the blank 2 is released from the cutting table 10 and no longer contacted.
  • the waste 3, however, remains on the cutting table 10, so that in cross section, as in the side view of FIGS. 1a-1g is shown, a gap 4 between the raised blank 2 and the remaining waste 3 is formed.
  • the gap 4 is formed by the lifting of the blank 2, at least one cutting blade 41 of a second cutting device 40 is passed through this resulting gap 4, as in FIG. 1f is shown.
  • the cutting blade 41 is thereby passed between blank and waste and thereby severed the not yet severed fibers or threads 5, so that at the end of the passage of the cutting blade 41, the blank is completely separated from the waste.
  • FIG. 2 schematically shows some embodiments of the second cutting device 40 and their respective cutting blades 41.
  • an arrangement of two cutting blades 41 is shown, each having a plurality of cutting teeth 42.
  • the cutting teeth 42 have a triangular base and are tapered in the direction of passage.
  • the cutting blades 41 are axially movable, in the direction R shown by the case axially .
  • each two cutting blades are shown in an arrangement, the two cutting blades 41 are each in opposite directions, so that a cutting blade is always moved in an axial direction, which is opposite to the movement of the other cutting blade.
  • the threads are cut in the manner of a cutting trimmer when the non-severed fibers or threads fall between the cutting teeth 42 of the moving cutting blades 41.
  • barbs 43 may be provided on the cutting teeth 42, which in the upper illustration of FIGS FIG. 2 is shown.
  • FIG. 3 schematically shows a second cutting device 40 with two counter-axially movable cutting blades 41 which are arranged on a cutter bar 44.
  • the cutting blades 41 may be arranged on the cutter bar 44 so that they are axially movable and form a kind of cutting trimmer.
  • Support rollers 45 are also disposed on the cutter bar 44 to prevent the cutter bar 44 from being cantilevered over the entire width of the cutting table.

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

Description

Die Erfindung betrifft ein Verfahren zur Herstellung eines Zuschnittes aus mindestens einem textilen Halbzeug, wobei der Zuschnitt mithilfe einer Schneidvorrichtung aus dem flächigen textilen Halbzeug hergestellt wird. Die Erfindung betrifft ebenso eine Anlage zur Herstellung eines derartigen Zuschnittes aus mindestens einem textilen Halbzeug.The invention relates to a method for producing a blank from at least one textile semifinished product, wherein the blank is produced by means of a cutting device from the sheet-like semi-finished textile product. The invention also relates to a system for producing such a blank from at least one textile semifinished product.

Bei der Herstellung eines Faserverbundbauteils aus einem Faserverbundwerkstoff wird insbesondere bei der Verwendung von Trockenfaser-Halbzeugen zunächst ein Zuschnitt aus dem Faserhalbzeug (als textiles Halbzeug) hergestellt, indem gemäß einer Zuschnittgeometrie mittels eines Schneidmessers entlang der äußeren Begrenzung der Zuschnittgeometrie des Zuschnittes das textile Halbzeug geschnitten wird. Durch Schneiden des Faserhalbzeuges wird das Faserhalbzeug in der Regel in einen Zuschnitt, aus dem das Faserverbundbauteil hergestellt wird, und in einen Verschnitt, der in der weiteren Prozesskette meist nicht weiterverwendet werden kann, getrennt.When producing a fiber composite component from a fiber composite material, a blank is first produced from the semifinished fiber product (as a semi-finished textile product) by cutting the textile semifinished product according to a blank geometry by means of a cutting blade along the outer boundary of the blank geometry , By cutting the semifinished fiber product, the semifinished fiber product is usually separated into a blank from which the fiber composite component is produced, and into a waste which usually can not be reused in the further process chain.

Bei der Verwendung von Trockenfaser-Halbzeugen wird der Zuschnitt anschließend mit einem Matrixmaterial des Faserverbundwerkstoffes infundiert und dieses dann ausgehärtet, wodurch eine integrale Einheit von Matrixmaterial und Fasermaterial entsteht.When dry fiber semifinished products are used, the blank is then infused with a matrix material of the fiber composite material and then cured, resulting in an integral unit of matrix material and fiber material.

In klassischen Prozessketten wird dabei das Faserhalbzeug beispielsweise auf einen Schneidtisch gelegt, so dass das Faserhalbzeug den Schneidtisch flächig auf einer Seite kontaktiert. Mit einem Schneidmesser wird nun auf dem Schneidtisch das Faserhalbzeug gemäß der vorgegebenen Zuschnittgeometrie zugeschnitten, so dass neben dem Zuschnitt auch ein Verschnitt verbleibt. Anschließend wird der Zuschnitt von dem Schneidtisch entfernt und dem weiteren Herstellungsprozess (Infundieren des Matrixmaterials, Tempern des Bauteils, Herstellen des Faserverbundbauteils) zugeführt.In classical process chains, the semifinished fiber product is placed on a cutting table, for example, so that the semifinished fiber product contacts the cutting surface in a planar manner on one side. With a cutting knife, the semifinished fiber product is then cut to size on the cutting table according to the predetermined cutting geometry, so that next to the blank also a waste remains. Subsequently, the blank is removed from the cutting table and the further manufacturing process (infusing the matrix material, annealing of the component, producing the fiber composite component) supplied.

Bei einer vollständig automatisierten Prozesskette muss hierfür sichergestellt werden, dass der Zuschnitt vollständig von dem Verschnitt getrennt wurde, so dass beispielsweise durch eine Greifvorrichtung der Zuschnitt automatisch von dem Schneidtisch genommen werden kann. Es kommt allerdings je nach Zuschnittgeometrie in vorliegender Faserorientierung gelegentlich zu dem Problem, dass bei einem Zuschnitt einige Fasern oder Wirkfäden, die ein Gelege zusammenhalten, nicht durchtrennt worden sind. Wird ein Zuschnitt nun mithilfe einer Greifvorrichtung automatisch angehoben und von dem Schneidtisch abgesammelt, so bleibt aufgrund der nicht durchtrennten Fasern und Wirkfäden ein Teil des Verschnitts an dem aufgehobenen Zuschnitt hängen, so dass die automatisierte Prozesskette unterbrochen werden muss und die nicht durchtrennten Fasern manuell bzw. händisch mit einer Schere durchtrennt werden müssen.In the case of a completely automated process chain, it must be ensured that the blank has been completely separated from the waste, so that the blank can be automatically removed from the cutting table, for example by means of a gripping device. However, depending on the geometry of the blank in the present fiber orientation, there is the occasional problem that when cut, some fibers or knit threads which hold a blanket together have not been severed. If a blank is now automatically lifted by means of a gripping device and collected by the cutting table, due to the untrimmed fibers and knitting threads, a part of the cut will hang on the lifted blank, so that the automated process chain must be interrupted and the non-severed fibers manually or manually with a pair of scissors must be severed.

Aus diesem Grund ist es in der Praxis üblich, dass die Zuschnitte durch Mitarbeiter per Hand von dem Schneidtisch gesammelt und nicht durchtrennte Fäden/Fasern mit einer Schere durchtrennt werden.For this reason, it is common in the practice that the blanks are collected by employees by hand from the cutting table and not severed threads / fibers are severed with a pair of scissors.

Aus der DE 10 2007 061 427 B4 ist ein Verfahren zum Durchtrennen von Fasern bei nicht vollständig durchtrennten Zuschnitten bekannt, bei dem der Randbereich zwischen dem Zuschnitt und dem Verschnitt bestromt und aufgrund des elektrischen Widerstandes die nicht durchtrennten Fasern erhitzt werden, was zu einem Verbrennen der Fasern und Durchtrennen der nicht durchtrennten Fasern führt. Allerdings funktioniert dieses Verfahren nur bei elektrisch leitfähigen Kohlenstofffasern, so dass das Verfahren bei nicht leitfähigen Fasergelegen nicht durchführbar ist. Außerdem kann bei thermisch empfindlichen Materialkombinationen das Durchtrennen der Fasern mithilfe von elektrischen Widerstandsheizungen Hitzeschäden verursachen, die zu einem Bauteilausschuss führen können. Des Weiteren werden Kohlenstofffaser-Gelege häufig mit nicht leitenden Wirkfäden zusammengenäht, so dass derartige zusammennähte Gelege oder sogar Preforms aus mehreren Halbzeugen mit diesem Verfahren nicht prozesssicher durchtrennt werden können.From the DE 10 2007 061 427 B4 For example, there is known a method of severing fibers in incompletely severed blanks by energizing the edge area between the blank and the blanks and by heating the non-severed fibers due to electrical resistance resulting in burning of the fibers and severing of the untrimmed fibers , However, this method works only with electrically conductive carbon fibers, so that the process is not feasible for non-conductive fiber layers. Additionally, with thermally sensitive material combinations, fiber severing using electrical resistance heaters can cause heat damage that can lead to component scrap. Furthermore, carbon fiber scrims often sewn together with non-conductive knitting threads, so that such seamed scrim or even preforms of several semi-finished products can not be severed reliably with this method.

Aus der US 2014/090528 A1 sind ein Verfahren und eine Vorrichtung zum Transportieren einer aus einem flächigen Fasergewebe abgeschnittenen Faserkontur im Zuge der Herstellung von faserverstärkten Kunststoff-Formteilen bekannt, wobei der Zuschnitt mit Hilfe einer Saugvorrichtung angehoben und der Verschnitt auf den Schneidtisch mit Hilfe von Niederhaltern gedrückt wird, wodurch etwaige Restverbindungen durchtrennt werden.From the US 2014/090528 A1 For example, a method and a device for transporting a fiber contour cut from a flat fiber fabric in the course of the production of fiber-reinforced plastic molded parts are known, wherein the blank is lifted by means of a suction device and the waste is pressed onto the cutting table by means of hold-downs, whereby any residual connections be severed.

Es ist daher Aufgabe der vorliegenden Erfindung ein verbessertes Verfahren und eine verbesserte Anlage vorzusehen, mit der ein Zuschnitt vollständig und prozesssicher vom Verschnitt getrennt werden kann.It is therefore an object of the present invention to provide an improved method and an improved system with which a blank can be completely and reliably separated from the waste.

Die Aufgabe wird mit dem Verfahren gemäß Anspruch 1 sowie der Anlage gemäß Anspruch 9 erfindungsgemäß gelöst.The object is achieved by the method according to claim 1 and the system according to claim 9 according to the invention.

Gemäß Anspruch 1 wird ein Verfahren zur Herstellung eines Zuschnitts aus mindestens einem textilen Halbzeug angegeben, wobei zunächst das mindestens eine textile Halbzeug in ein Schneidwerkzeug eingebracht wird. Ein Schneidwerkzeug kann beispielsweise ein flächiger, meist ebener Schneidtisch sein, auf dem das textile Halbzeug abgelegt wird. Ein Schneidwerkzeug kann aber auch ein Formwerkzeug sein, auf dem eine Faserpreform aus einem oder mehreren textilen Halbzeugen, beispielsweise Faserhalbzeugen, hergestellt wurde, wobei die Faserpreform nach der Herstellung endkonturbesäumt werden soll. Ein Schneidwerkzeug im Sinne der vorliegenden Erfindung ist somit ein Werkzeug, mit dem ein textiles Halbzeug, insbesondere ein Faserhalbzeug zur Herstellung eines Faserverbundbauteils, mithilfe eines Schneidmessers geschnitten und somit ein Zuschnitt hergestellt werden kann.According to claim 1, a method for producing a blank from at least one textile semifinished product is specified, wherein first the at least one semi-finished textile product is introduced into a cutting tool. A cutting tool can be, for example, a flat, mostly planar cutting table on which the textile semifinished product is deposited. But a cutting tool can also be a molding tool on which a Faserpreform from one or more semi-finished textile products, such as semi-finished fiber products, was produced, the Faserpreform should be trimmed after production endkontur. A cutting tool in the context of the present invention is thus a tool with which a semi-finished textile product, in particular a semi-finished fiber product for producing a fiber composite component, cut using a cutting blade and thus a blank can be produced.

Nach dem Einbringen des mindestens einen textilen Halbzeuges in das Schneidwerkzeug wird nun mithilfe einer ersten Schneidvorrichtung gemäß der vorliegenden Zuschnittgeometrie des Zuschnittes das mindestens eine in das Schneidwerkzeug eingebrachte textile Halbzeug geschnitten, um aus dem textilen Halbzeug den Zuschnitt herzustellen. Dabei können aus dem textilen Halbzeug auch mehrere Zuschnittelemente herausgeschnitten werden, beispielsweise unterschiedlichster Geometrie, um den Verschnitt möglichst gering zu halten.After introducing the at least one semi-finished textile product into the cutting tool, the at least one is now inserted into the cutting tool with the aid of a first cutting device in accordance with the present blank geometry of the blank introduced textile semifinished product cut to produce the cut from the textile semifinished product. In this case, a plurality of blank elements can be cut out of the textile semifinished product, for example of different geometry, in order to minimize the waste.

Die erste Schneidvorrichtung kann dabei beispielsweise ein Schneidportal sein, das einen Bewegungsautomaten hat, an dem ein Schneidmesser angeordnet ist, um ein auf einem Schneidtisch abgelegtes Faserhalbzeug entsprechend zu schneiden und den Zuschnitt herzustellen.The first cutting device may be, for example, a cutting portal, which has a moving machine on which a cutting blade is arranged to cut a laid down on a cutting table semi-finished fiber accordingly and produce the blank.

Erfindungsgemäß ist nun vorgesehen, dass nach dem Schneiden des textilen Halbzeuges mittels der ersten Schneidvorrichtung der Zuschnitt durch eine Greifeinrichtung gegriffen und gegenüber dem Verschnitt angehoben wird, um so den Zuschnitt von dem Verschnitt räumlich zu trennen. Selbstverständlich ist es ebenfalls Bestandteil der Erfindung, dass der Verschnitt durch die Greifeinrichtung gegriffen und über den Zuschnitt angehoben wird, um den Zuschnitt von dem Verschnitt räumlich zu trennen. Durch das Anheben des Zuschnittes oder eben des Verschnittes wird im Querschnitt bezüglich des textilen Halbzeuges zwischen dem Zuschnitt und dem Verschnitt ein Spalt erzeugt, der für das Gelingen der Lehre der vorliegenden Erfindung nur wenige Zentimeter betragen muss. Vorzugsweise kann der Spalt zwischen dem Verschnitt weniger als 5 cm, vorteilhafterweise weniger als 3 cm und besonders vorteilhaft weniger als 1 cm betragen. Der Spalt muss nur mindestens so groß sein, dass ein Schneidmesser einer zweiten Schneidvorrichtung, wie nachfolgend beschrieben, hindurchführbar ist.According to the invention, it is now provided that after cutting the textile semifinished product by means of the first cutting device, the blank is gripped by a gripping device and raised relative to the waste, so as to spatially separate the blank from the waste. Of course, it is also part of the invention that the waste is gripped by the gripping device and raised over the blank to spatially separate the blank from the waste. By raising the blank or just the waste a gap is generated in cross-section with respect to the textile semifinished product between the blank and the waste, which must be only a few centimeters for the success of the teaching of the present invention. Preferably, the gap between the scrap may be less than 5 cm, advantageously less than 3 cm and most preferably less than 1 cm. The gap must only be at least so large that a cutting blade of a second cutting device, as described below, can be passed.

Nachdem nun der Zuschnitt von dem Verschnitt räumlich getrennt und zwischen beiden im Querschnitt ein Spalt erzeugt wurde, wird nun mindestens ein Schneidmesser einer zweiten Schneidvorrichtung durch den entstandenen Spalt zwischen Zuschnitt und Verschnitt hindurchgeführt, wodurch sichergestellt wird, dass sämtliche, noch nicht durchtrennte Fasern/Fäden des textilen Halbzeuges vollständig durchtrennt werden, so dass nach dem Hindurchführen des mindestens einen Schneidmessers der zweiten Schneidvorrichtung durch den entstandenen Spalt der Zuschnitt von dem Verschnitt vollständig und prozesssicher getrennt ist.After the blank has been spatially separated from the waste and a gap has been created between the two in cross-section, at least one cutting blade of a second cutting device is passed through the resulting gap between blank and waste, thereby ensuring that all fibers / threads not yet severed of the textile semifinished product are completely severed, so that after passing the at least one cutting blade of the second cutting device through the resulting gap, the blank is completely and reliably separated from the waste.

Je nach Ausgestaltung, kann die erste Schneidvorrichtung von der zweiten Schneidvorrichtung verschieden sein. Es ist aber auch denkbar, dass die erste Schneidvorrichtung mit der zweiten Schneidvorrichtung teilweise oder vollständig übereinstimmt und das Schneidmesser für den Zuschnitt auch gleichzeitig das Schneidmesser ist, das durch den entstandenen Spalt hindurchgeführt wird.Depending on the configuration, the first cutting device may be different from the second cutting device. However, it is also conceivable that the first cutting device coincides partially or completely with the second cutting device and the cutting blade for cutting is at the same time the cutting blade which is passed through the resulting gap.

Wie bereits erwähnt, kann das mindestens eine textile Halbzeug auf eine Werkzeugoberfläche des Schneidwerkzeuges aufgelegt und aufliegend auf der Werkzeugoberfläche durch die erste Schneidvorrichtung geschnitten werden. Dies ist meist dann der Fall, wenn das Schneidwerkzeug ein Schneidtisch oder ein Formwerkzeug zur Herstellung einer Faserpreform ist.As already mentioned, the at least one semifinished textile product can be placed on a tool surface of the cutting tool and cut on the tool surface by the first cutting device. This is usually the case when the cutting tool is a cutting table or a mold for producing a Faserpreform.

Vorteilhafterweise wird mithilfe der Greifeinrichtung der Zuschnitt gegenüber dem Verschnitt - oder andersherum - derart angehoben, dass die durch den flächigen Zuschnitt aufgespannte Zuschnittebene von der durch den flächigen Verschnitt aufgespannte Verschnittebene verschieden ist, so dass Zuschnitt und Verschnitt auf jeweils verschiedenen Ebenen liegen, wenn das Schneidmesser der zweiten Schneidvorrichtung durch den dadurch entstandenen Spalt hindurchgeführt wird.Advantageously, using the gripping device, the blank is raised relative to the waste - or vice versa - in such a way that the cut plane spanned by the flat blank is different from the cut plane defined by the flat cut, so that blank and blanks lie on different levels when the cutting knife the second cutting device is passed through the resulting gap.

Um einen möglichst einfachen Prozess sicherzustellen und eine möglichst hohe Prozesssicherheit zu gewährleisten, ist es vorteilhaft, wenn das mindestens eine Schneidmesser der zweiten Schneidvorrichtung im Wesentlichen parallel zum Zuschnitt und/oder Verschnitt durch den entstandenen Spalt hindurchgeführt wird, wodurch Beschädigungen insbesondere am Zuschnitt verhindert werden können.In order to ensure the simplest possible process and to ensure the highest possible process reliability, it is advantageous if the at least one cutting blade of the second cutting device is guided through the resulting gap essentially parallel to the blank and / or waste, whereby damage, in particular to the blank, can be prevented ,

In einer vorteilhaften Ausführungsform wird für das erfindungsgemäße Verfahren eine zweite Schneidvorrichtung derart bereitgestellt, dass mindestens zwei axial bewegbar ausgebildete Schneidmesser vorgesehen sind, die beim Hindurchführen durch den entstandenen Spalt gegenläufig axial bewegt werden. Hierdurch können auch festere Fasern bzw. Fäden prozesssicher getrennt werden. Die axial bewegbar ausgebildeten Schneidmesser sind dabei so ausgebildet, dass sie alternierend axial bewegt werden, so dass die Bewegungsrichtung kontinuierlich wechselt. Gegenläufig meint hierbei, dass die Schneidmesser im Wesentlichen während des axialen Bewegens nicht in die gleiche axiale Richtung bewegt werden.In an advantageous embodiment, a second cutting device is provided for the method according to the invention such that at least two axially movable cutting blades are provided, which are moved in opposite directions axially when passing through the gap formed. As a result, even stronger fibers or threads can be reliably separated. The axially movable cutting blades are formed so that they are alternately moved axially, so that the direction of movement changes continuously. Conversely, this means that the cutting blades are not moved substantially in the same axial direction during the axial movement.

Die axiale Bewegung erfolgt dabei quer zur Hindurchführrichtung durch den Spalt.The axial movement takes place transversely to the direction of passage through the gap.

In einer weiteren vorteilhaften Ausführungsform wird das mindestens eine Schneidmesser der zweiten Schneidvorrichtung während des Hindurchführens durch den Spalt zum Schwingen angeregt, wodurch eine verbesserte Schneidkraft ohne große Andruck- bzw. Gegendruckkräfte erreicht werden kann. Denn beim Hindurchführen der Schneidmesser durch den Spalt sollte vorteilhafterweise vermieden werden, dass große Zugkräfte auf die noch nicht durchtrennten Fäden aufgebracht werden, wodurch der Zuschnitt hinsichtlich seiner Faser-/Fadengeometrie beschädigt werden könnte.In a further advantageous embodiment, the at least one cutting blade of the second cutting device is caused to oscillate during the passage through the gap, whereby an improved cutting force can be achieved without great pressure or counterpressure forces. For when passing the cutting blade through the gap should be advantageously avoided that large tensile forces are applied to the not yet severed threads, whereby the blank could be damaged in terms of its fiber / thread geometry.

Gemäß Anspruch 8 wird im Übrigen ein Verfahren zur Herstellung eines Faserverbundbauteils aus einem Faserverbundwerkstoff vorgeschlagen, der ein Fasermaterial und ein Matrixmaterial hat. Das Fasermaterial ist dabei das textile Halbzeug, wobei ein Zuschnitt automatisiert aus mindestens einem der bereitgestellten textilen Halbzeuge gemäß dem vorstehend genannten Verfahren hergestellt und aus dem hergestellten Zuschnitt dann das Faserverbundbauteil hergestellt wird.Moreover, according to claim 8, a method is proposed for producing a fiber composite component from a fiber composite material which has a fiber material and a matrix material. In this case, the fiber material is the semi-finished textile product, wherein a blank is automatically produced from at least one of the provided semifinished textile products in accordance with the abovementioned method and then the fiber composite component is produced from the produced blank.

Im Übrigen gehört zur Erfindung auch eine Anlage zur Herstellung eines Zuschnittes aus mindestens einem textilen Halbzeug, wobei die Anlage insbesondere dazu eingerichtet und ausgebildet ist, das vorstehend beschriebene Verfahren zur Herstellung eines Zuschnittes auszuführen. Hierfür weist die Anlage ein Schneidwerkzeug auf, in das das mindestens eine textile Halbzeug einbringbar ist. Vorteilhafterweise kann ein solches Schneidwerkzeug eine Werkzeugoberfläche haben, auf die das mindestens eine textile Halbzeug ablegbar ist. Ein solches Schneidwerkzeug mit einer Werkzeugoberfläche kann dabei beispielsweise ein Schneidtisch oder ein Formwerkzeug sein.Incidentally, the invention also includes a system for producing a blank from at least one semi-finished textile product, wherein the system is in particular adapted and designed to carry out the above-described method for producing a blank. For this purpose, the system has a cutting tool into which the at least one semi-finished textile product can be introduced. Advantageously, such a cutting tool can have a tool surface onto which the at least one textile semifinished product can be deposited. Such a cutting tool with a tool surface can be, for example, a cutting table or a molding tool.

Die Anlage weist des Weiteren eine erste Schneidvorrichtung auf, die zum Schneiden des mindestens einen in das Schneidwerkzeug eingebrachte textile Halbzeug gemäß einer vorgegebenen Schnittgeometrie des Zuschnitts ausgebildet ist. Des Weiteren weist die Anlage eine Greifeinrichtung auf, die zum Greifen des Zuschnittes und Anheben des Zuschnittes gegenüber dem Verschnitt - oder andersherum - derart ausgebildet ist, dass im Querschnitt des textilen Halbzeuges zwischen dem Zuschnitt und dem Verschnitt aufgrund des Anhebens ein Spalt entsteht, wobei Zuschnitt und Verschnitt zusammen das mindestens eine textile Halbzeug bilden.The system furthermore has a first cutting device, which is designed to cut the at least one semi-finished textile product introduced into the cutting tool according to a predetermined cutting geometry of the blank. Furthermore, the system has a gripping device which is used to grasp the blank and raising the blank relative to the waste - or vice versa - is designed such that in the cross section of the textile semifinished product between the blank and the waste due to the lifting creates a gap, wherein blank and waste together form the at least one textile semifinished product.

Erfindungsgemäß weist die Anlage eine zweite Schneidvorrichtung auf, die mindestens ein Schneidmesser hat, das durch den entstehenden Spalt zwischen Zuschnitt und Verschnitt hindurchführbar ausgebildet ist, um so nicht oder nicht vollständig durchtrennte Fasern bzw. Fäden des textilen Halbzeuges, die von der ersten Schneidvorrichtung nicht vollständig durchtrennt wurden, zu durchtrennen und somit den Zuschnitt von dem Verschnitt endgültig, vollständig und prozesssicher zu trennen.According to the invention, the system has a second cutting device, which has at least one cutting blade which can be guided through the resulting gap between blank and waste, so as not or not completely severed fibers or filaments of the textile semi-finished, not completely from the first cutting device were severed, cut and thus the cutting of the blend final, complete and reliable separation.

Die erste Schneidvorrichtung kann vorteilhafterweise ein Schneidportal sein, das wenigstens einen gegenüber dem Schneidwerkzeug (ausgebildet in Form einer Werkzeugoberfläche) verfahrbares Schneidmesser zum Schneiden des mindestens einen in das Schneidwerkzeug eingebrachten textilen Halbzeuges hat. Ein solches Schneidportal wird auch als Cutter-Anlage bezeichnet.The first cutting device can advantageously be a cutting portal which has at least one cutting blade movable relative to the cutting tool (designed in the form of a tool surface) for cutting the at least one semi-finished textile product introduced into the cutting tool. Such a cutting portal is also referred to as a cutter system.

Vorteilhafterweise kann die erste Schneidvorrichtung aber auch ein Knickarm-Roboter sein, der als Endeffektor wenigstens ein Schneidmesser zum Schneiden des mindestens einen in das Schneidwerkzeug eingebrachten textilen Halbzeuges hat. Ein solcher Knickarm-Roboter mit einem Schneidmesser als Endeffektor wird beispielsweise dann eingesetzt, wenn eine 3D-Preform in ein Formwerkzeug eingebracht und dort hergestellt wurde und die endgültige Geometrie der 3D-Preform nun mithilfe des Schneidmessers an dem Knickarm-Roboter in dem Formwerkzeug ausgebildet werden soll. In diesem Fall wird das textile Halbzeug innerhalb des Formwerkzeuges geschnitten, wobei in vorteilhafter Weise der Verschnitt angehoben und der Zuschnitt auf dem Formwerkzeug verbleibt.Advantageously, however, the first cutting device can also be an articulated-arm robot, which has as end-effector at least one cutting blade for cutting the at least one textile semifinished product introduced into the cutting tool. Such an articulated-arm robot with a cutting knife as the end effector is used, for example, when a 3D preform has been introduced into a molding tool and manufactured there and the final geometry of the 3D preform are now formed using the cutting blade on the articulated arm robot in the mold should. In this case, the textile semifinished product is cut within the molding tool, wherein advantageously the scrap increases and the blank remains on the molding tool.

In einer vorteilhaften Ausführungsform ist die zweite Schneidvorrichtung derart ausgebildet, dass das mindestens eine Schneidmesser im Wesentlichen parallel zum Zuschnitt und/oder Verschnitt durch den entstehenden Spalt hindurchführbar ist. Diese Ausführungsform ist beispielsweise dann vorteilhaft einsetzbar, wenn die erste Schneidvorrichtung ein Schneidportal ist und die zweite Schneidvorrichtung in das Schneidportal integriert wird. Das mindestens eine Schneidmesser der zweiten Schneidvorrichtung ist dabei so ausgebildet, dass es sich vorteilhafterweise über die gesamte Breite des Schneidtisches des Schneidportals erstreckt und zwischen dem angehobenen Zuschnitt (oder Verschnitt) und dem auf dem Tisch verbleibenden Verschnitt (oder Zuschnitt) hindurchgeführt wird, so dass in diesem Falle das mindestens eine Schneidmesser der zweiten Schneidvorrichtung auch zwischen dem Schneidwerkzeug und der Greifeinrichtung hindurchgeführt wird.In an advantageous embodiment, the second cutting device is designed such that the at least one cutting blade can be guided substantially parallel to the blank and / or waste through the resulting gap. This embodiment can be used advantageously, for example, if the first Cutting device is a cutting portal and the second cutting device is integrated into the cutting portal. The at least one cutting blade of the second cutting device is designed so that it advantageously extends over the entire width of the cutting table of the cutting portal and between the raised blank (or waste) and the remaining on the table waste (or blank) is passed, so that in this case, the at least one cutting blade of the second cutting device is also passed between the cutting tool and the gripping device.

In einer weiteren vorteilhaften Ausführungsform ist die zweite Schneidvorrichtung so ausgebildet, dass mindestens zwei axial bewegbar ausgebildete Schneidmesser vorgesehen sind, die beim Hindurchführen durch den entstandenen Spalt gegenläufig bewegbar ausgebildet sind. Die Richtung der Axialbewegung eines Schneidmessers alterniert dabei, so dass eine "Hin- und Her"-Bewegung in axialer Richtung erzeugt wird. Die axiale Bewegungsrichtung ist dabei quer zur Richtung der Bewegung des Messers, wenn dieses durch den Spalt zwischen Zuschnitt und Verschnitt hindurchgeführt wird.In a further advantageous embodiment, the second cutting device is designed so that at least two axially movable cutting blades are provided, which are formed in opposite directions during passage through the resulting gap. The direction of the axial movement of a cutting blade alternates, so that a "back and forth" movement is generated in the axial direction. The axial direction of movement is transverse to the direction of movement of the blade, when it is passed through the gap between blank and waste.

In einer weiteren vorteilhaften Ausführungsform weist das mindestens eine Schneidmesser der zweiten Schneidvorrichtung eine Mehrzahl von Schneidzähnen auf, die in Hindurchführrichtung ausgerichtet sind. In Kombination mit einer axialen, alternierenden Bewegung des mindestens einen Schneidmessers entsteht somit eine Art Sägebewegung, wenn das Schneidmesser zwischen Zuschnitt und Verschnitt hindurchgeführt wird. Auch ein Sägen fällt dabei unter den Betriff "Schneiden" im Sinne der vorliegenden Erfindung in Bezug auf das Schneidmesser.In a further advantageous embodiment, the at least one cutting blade of the second cutting device has a plurality of cutting teeth, which are aligned in the feedthrough direction. In combination with an axial, alternating movement of the at least one cutting blade thus creates a kind of sawing movement when the cutting blade is passed between blank and waste. Sawing also falls under the term "cutting" in the sense of the present invention in relation to the cutting blade.

Die Schneidzähne können dabei beispielsweise eine dreieckige Schnittebene bzw. Zahnform aufweisen, wobei die Schneidzähne dabei mit einer Kantenseite des Dreieckes an einen Schneidmesserbalken angeordnet und die gegenüberliegende Spitze des Dreieckes in Richtung der Hindurchführrichtung zwischen Zuschnitt und Verschnitt ausgerichtet ist.The cutting teeth can have, for example, a triangular sectional plane or tooth shape, wherein the cutting teeth arranged with an edge side of the triangle to a cutting blade and the opposite tip of the triangle is aligned in the direction of passing direction between blank and waste.

In einer vorteilhaften Ausführungsform hierzu weisen die Schneidzähne des mindestens einen Schneidmessers der zweiten Schneidvorrichtung eine oder mehrere Widerhaken auf, so dass beim Hindurchführen des Schneidmessers durch den Spalt zwischen Zuschnitt und Verschnitt die noch nicht vollständig durchtrennten Fasern bzw. Fäden sich in dem Widerhaken verfangen und somit prozesssicher durchtrennt werden. Hierdurch soll verhindert werden, dass die Fäden möglicherweise aus dem Wirkbereich des Schneidmessers herausrutschen und nicht durchtrennt werden, was dazu führen kann, dass sich die Fäden in dem Schneidmesser verfangen und beim Hindurchführen des Schneidmessers durch den Spalt dieser Faden dann aus dem Zuschnitt herausgerissen wird. Derartige Fehlstellen im späteren Bauteil, insbesondere bei den lasttragenden Fasern, sind in vielen Anwendungsbereichen nicht hinnehmbar.In an advantageous embodiment, the cutting teeth of the at least one cutting blade of the second cutting device on one or more barbs, so that when passing the cutting blade through the gap between blank and waste the not yet completely severed fibers or threads are caught in the barb and thus be severely cut process. This is to prevent the threads from possibly slipping out of the working area of the cutting blade and not being severed, which can cause the threads to get caught in the cutting blade and then be torn out of the blank as the cutting knife passes through the gap. Such defects in the later component, especially in the load-bearing fibers, are unacceptable in many applications.

In einer weiteren vorteilhaften Ausführungsform wird das mindestens eine Schneidmesser der zweiten Schneidvorrichtung in Schwingung versetzt, während es durch den entstandenen Spalt zwischen Zuschnitt und Verschnitt hindurchgeführt wird, um so das Schneidergebnis zu verbessern. Dies ist insbesondere vor dem Hintergrund vorteilhaft, dass durch das Schneidmesser möglichst wenig Zugkraft auf die noch nicht durchtrennten Fasern bzw. Fäden aufgebracht werden darf, um ein Abtrennen der Fasern bzw. Fäden aus dem Zuschnitt zu vermeiden.In a further advantageous embodiment, the at least one cutting blade of the second cutting device is vibrated while it is passed through the resulting gap between blank and waste, so as to improve the cutting result. This is particularly advantageous against the background that as little pulling force on the not yet severed fibers or filaments may be applied by the cutting blade in order to avoid separation of the fibers or threads from the blank.

In einer weiteren vorteilhaften Ausführungsform weist das Schneidmesser eine insbesondere längliche Erstreckung (in axialer Richtung) auf, was beispielsweise bei der Integration der zweiten Schneidvorrichtung in ein Schneidportal notwendig ist, wenn das Schneidmesser über den gesamten Bauraum des Schneidportals sich erstrecken soll. Bei industriell eingesetzten Cutter-Maschinen bzw. Schneidportalen werden dabei Breiten von bis zu 3 m realisiert, was eine extrem hohe Materialsteifigkeit erfordern würde. Der zur Verfügung stehende Bauraum ist jedoch durch die Vorgabe der minimalen räumlichen Trennung zwischen Zuschnitt und Verschnitt und einer möglichst geringen Spaltbreite stark eingeschränkt, so dass es besonders voreilhaft ist, wenn das Schneidmesser, insbesondere am Messerbalken, eine oder mehrere Stützrollen aufweist, mit denen das Schneidmesser auf dem Schneidwerkzeug abgestützt werden kann. Die Stützrollen können dabei in Form von Kugelrollen ausgebildet sein, um auch eine axiale Bewegung zuzulassen. So kann vermieden werden, dass der Messerbalken auf der gesamten Breite des Schneidportals freitragend sein muss.In a further advantageous embodiment, the cutting blade has a particular elongate extension (in the axial direction), which is necessary, for example, in the integration of the second cutting device in a cutting portal, when the cutting blade is to extend over the entire space of the cutting portal. Widths of up to 3 m are realized in industrially used cutter machines or cutting gantries, which would require extremely high material rigidity. However, the available space is greatly limited by the specification of the minimum spatial separation between blank and waste and the smallest possible gap width, so that it is particularly premature if the cutting blade, in particular on the cutter bar, one or more support rollers, with which the Cutting knife can be supported on the cutting tool. The support rollers can be designed in the form of spherical rollers be to allow also an axial movement. This avoids that the cutter bar must be cantilevered over the entire width of the cutting portal.

Im Übrigen gehört zur Erfindung auch eine Anlage zur Herstellung eines Faserverbundbauteils, wobei zu einer solchen Anlage gattungsgemäß ein Formwerkzeug, je nach verwendeten Faserverbundwerkstoff eine Injektionseinheit zum Injizieren eines Matrixmaterials sowie eine Aushärteeinrichtung, beispielsweise einen Autoklaven, zum Tempern des Matrixmaterials und Aushärten desselben. Erfindungsgemäß weist eine solche Anlage zur Herstellung eines Faserverbundbauteils dann eine Anlage zur Herstellung eines Zuschnittes wie vorstehend beschrieben auf, um so den Prozessschritt der Herstellung des Zuschnitts prozesssicher automatisieren zu können.Incidentally, the invention also includes a system for producing a fiber composite component, to such a system generically a mold, depending on the fiber composite material used an injection unit for injecting a matrix material and a curing device, such as an autoclave, for annealing the matrix material and curing the same. According to the invention, such a system for producing a fiber composite component then has a system for producing a blank as described above, so as to be able to automate the process step of manufacturing the blank in a process-reliable manner.

Unter einem Anheben des Zuschnitts gegenüber dem Verschnitt - oder andersherum - wird insbesondere eine Hubbewegung in Bezug auf den nicht angehobenen Teil verstanden, wodurch Zuschnitt und Verschnitt räumlich in verschiedene Ebenen getrennt werden, eine solche Hubbewegung bzw. ein solches Anheben muss dabei nicht axial zum Erdlot verlaufen, sondern kann beispielsweise auch bei schräg angeordneten Schneidwerkzeugoberflächen schräg zum Erdlot verlaufen. Der Begriff "Anheben" ist dabei nicht beschränkt auf eine reine Hubbewegung parallel zum Erdlot, sondern meint lediglich eine räumliche Trennung zwischen Zuschnitt und Verschnitt. Dies schließt insbesondere auch ein Verschieben und/oder Absenken mit ein.Lifting the blank relative to the waste - or vice versa - is understood to mean, in particular, a lifting movement with respect to the non-lifted part, whereby the blank and waste are spatially separated into different planes, such lifting movement or lifting need not be axial to the soil solder run, but can for example also obliquely arranged cutting tool surfaces obliquely to the earth slot. The term "lifting" is not limited to a pure lifting movement parallel to the soil, but merely means a spatial separation between blank and waste. This includes, in particular, a shifting and / or lowering.

Unter dem Begriff "Greifen" des Zuschnitts oder Verschnitts wird insbesondere verstanden, dass die Greifeinrichtung den Zuschnitt oder Verschnitt an der Greifeinrichtung hält und von dem jeweils anderen Teil räumlich trennen kann. Eine solche Greifeinrichtung kann beispielsweise ein Nadelgreifer sein. Denkbar sind aber auch andere Greifmechanismen, wie beispielsweise Elektrostatik oder Unterdruck. Ein solcher Greifer ist dennoch ein Manipulator, der den Zuschnitt vom Verschnitt räumlich trennt, beispielsweise durch Anheben, Absenken und/oder Verschieben.The term "gripping" of the blank or trimming is understood to mean, in particular, that the gripping device holds the blank or waste on the gripping device and can spatially separate it from the respective other part. Such a gripping device may for example be a needle gripper. Conceivable, however, are other gripping mechanisms, such as electrostatic or negative pressure. Such a gripper is nevertheless a manipulator which spatially separates the blank from the waste, for example by lifting, lowering and / or moving.

Unter einem "Schneidmesser" im Sinne der vorliegenden Erfindung wird ein Messer verstanden, das kontaktlos oder kontaktbehaftet das textile Halbzeug schneiden bzw. Fasern/Fäden durchtrennen kann. Ein solches Schneidmesser kann dabei ein klassisches Messer mit oder ohne Messerzähne sein. Denkbar ist aber auch, dass das Schneidmesser beispielsweise durch andere schneidende Mechanismen seine Schneidwirkung entfaltet, wie beispielsweise Laser, Wasser oder Sand.For the purposes of the present invention, a "cutting blade" is understood to be a blade which cuts the textile semifinished product without contact or contact. Can sever fibers / threads. Such a cutting blade can be a classic knife with or without knife teeth. It is also conceivable that the cutting blade unfolds its cutting action, for example by laser, water or sand, for example by other cutting mechanisms.

Die Erfindung wird anhand der beigefügten Figuren beispielhaft näher erläutert. Es zeigen:

Figur 1a-1f
- Darstellung der Verfahrensschritte des erfindungsgemäßen Verfahrens;
Figur 2
- Schematische Darstellung einer Schneidmesser-Anordnung;
Figur 3
- Darstellung eines Schneidmessers mit Stützrollen.
The invention will be explained in more detail by way of example with reference to the attached figures. Show it:
FIGS. 1a-1f
- Presentation of the method steps of the method according to the invention;
FIG. 2
- Schematic representation of a cutting blade assembly;
FIG. 3
- Representation of a cutting knife with support rollers.

Figuren 1a-1f zeigen in einer schematischen Darstellung die einzelnen Verfahrensschritte zur Herstellung eines Zuschnitts aus einem textilen Halbzeug, wobei im Ausführungsbeispiel der Figuren 1a-1f zum Zwecke der Erläuterung des Verfahrens auf den Anwendungsfall eines Schneidportals abgestellt wurde, bei dem das textile Halbzeug auf einem Schneidtisch abgelegt und dann das Schneidportal mithilfe eines an dem Portal angeordneten Messers gemäß der Zuschnittsgeometrie den Zuschnitt aus dem textilen Halbzeug schneidet. FIGS. 1a-1f show in a schematic representation of the individual process steps for producing a blank from a textile semifinished product, wherein in the embodiment of the FIGS. 1a-1f has been turned off for the purpose of explaining the method to the application of a cutting portal, in which the semi-finished textile deposited on a cutting table and then the cutting portal using a knife arranged on the portal according to the blank geometry cuts the blank from the textile semifinished product.

Die Figuren 1a-1f zeigen dabei auf der linken Seite eine Draufsicht auf das Schneidportal, während auf der rechten Seite eine Seitenansicht dargestellt ist.The FIGS. 1a-1f show on the left side a plan view of the cutting portal, while on the right side is shown a side view.

In Figur 1a ist ein Schneidtisch bzw. Cuttertisch 10 dargestellt, der das Schneidwerkzeug für das zu schneidende textile Halbzeug 1 bildet. An dem Schneidtisch 10 ist ein Schneidportal 20 angeordnet, das die erste Schneidvorrichtung zum Herstellen eines Zuschnittes aus dem textilen Halbzeug 1 bildet. Das Schneidportal 20 weist einen Bewegungsautomaten 21 auf, mit dem ein Schneidkopf 22 über dem Schneidtisch positionier- und verfahrbar ist. Unter dem Schneidkopf 22 (nicht dargestellt) befindet sich ein Schneidmesser, um das textile Halbzeug 1 gemäß einer vorgegebenen Zuschnittsgeometrie zu schneiden.In FIG. 1a a cutting table or cutting table 10 is shown, which forms the cutting tool for the semi-finished textile product 1 to be cut. On the cutting table 10, a cutting portal 20 is arranged, which forms the first cutting device for producing a blank from the textile semifinished product 1. The cutting portal 20 has a moving machine 21 with which a cutting head 22 can be positioned and moved over the cutting table. Below the cutting head 22 (not shown) is a cutting blade for cutting the semifinished textile product 1 according to a predetermined cutting geometry.

In Figur 1a ist der Schneidkopf 22 des Schneidportals 20 zusammen mit dem Schneidmesser (nicht dargestellt) in einer Parkposition in der rechten oberen Ecke des Schneidtisches 10 positioniert, so dass das textile Halbzeug 1 (in der unkonfektionierten Fassung) auf dem Schneidtisch abgelegt werden kann. Im Verfahrensschritt gemäß der Figur 1a wird somit das textile Halbzeug 1 in das Schneidwerkzeug 10 eingebracht.In FIG. 1a the cutting head 22 of the cutting portal 20 is positioned together with the cutting blade (not shown) in a parking position in the upper right corner of the cutting table 10, so that the textile semifinished product 1 (in the unassembled version) can be placed on the cutting table. In the process step according to the FIG. 1a Thus, the textile semifinished product 1 is introduced into the cutting tool 10.

Dabei kann das textile Halbzeug 1 an einer vorgegebenen Position auf dem Schneidtisch 10 positioniert werden, wenn beispielsweise möglichst verschnittarm der Zuschnitt hergestellt werden soll und die gesamte Fläche des textilen Halbzeuges 1 ausgenutzt werden muss. Denkbar ist auch, dass der Schneidkopf 22 entsprechende Sensoren aufweist, um die Position des auf dem Schneidtisch 10 abgelegten textilen Halbzeuges 1 feststellen zu können und somit relativ zu der Positionierung des textilen Halbzeuges 1 das Schnittmuster abfährt.In this case, the semi-finished textile product 1 can be positioned at a predetermined position on the cutting table 10, if, for example, as low as possible cutting the blank to be produced and the entire surface of the textile semifinished product 1 must be utilized. It is also conceivable that the cutting head 22 has corresponding sensors in order to be able to determine the position of the textile semifinished product 1 deposited on the cutting table 10 and thus moves the cutting pattern relative to the positioning of the textile semifinished product 1.

Anschließend erfolgt im nächsten Prozessschritt, der in Figur 1b dargestellt ist, die Herstellung des Zuschnitts 2 durch Schneiden des textilen Halbzeuges 1 mithilfe des Schneidmessers 23 des Schneidportals 20. Mithilfe des Schneidportals 20 und des Bewegungsautomaten 21 des Schneidportals 20 wird dabei der Schneidkopf 22 gegenüber dem ruhenden textilen Halbzeug 1 verfahren, so dass gemäß der Zuschnittsgeometrie des Zuschnitts 2 der Zuschnitt entsprechend an seinen Rändern aus dem textilen Halbzeug 1 herausgeschnitten wird.Subsequently, in the next process step, the in FIG. 1b Using the cutting portal 20 and the automatic machine 21 of the cutting portal 20 while the cutting head 22 is moved relative to the stationary textile semifinished product 1, so that according to the Blank geometry of the blank 2 of the blank is correspondingly cut out of the textile semifinished product 1 at its edges.

Im Ausführungsbeispiel der Figur 1b ist gezeigt, dass aus dem textilen Halbzeug 1 mehrerer Zuschnittelemente herausgeschnitten werden, die zusammen den Zuschnitt bilden. Der gegenüber dem Zuschnitt verbleibende Rest des textilen Halbzeuges 1 wird dabei als Verschnitt 3 bezeichnet.In the embodiment of FIG. 1b It is shown that 1 of several blank elements are cut out of the textile semifinished product, which together form the blank. The remaining of the blank rest of the textile semifinished product 1 is referred to as a waste 3.

Nachdem sämtliche Zuschnittelemente des Zuschnitts 2 aus dem textilen Halbzeug 1 mithilfe des Schneidportals 20 geschnitten wurden, wird der Schneidkopf 22 des Schneidportals 20 in eine Parkposition zurückgefahren, wie dies in Figur 1c gezeigt ist. Anschließend wird von oben in Richtung des Schneidtisches 10 eine Greifeinrichtung 30 positioniert, die im Ausführungsbeispiel der Figuren 1a-1f den Zuschnitt anheben soll. Wie in Figur 1c gezeigt, wird die Greifeinrichtung 30 in Richtung des Zuschnitts 2 positioniert und bewegt, bis die Greifeinrichtung 30 den Zuschnitt 2 kontaktiert (Figur 1d).After all blank elements of the blank 2 have been cut from the textile semifinished product 1 by means of the cutting portal 20, the cutting head 22 of the cutting portal 20 is moved back to a parking position, as shown in FIG Figure 1c is shown. Subsequently, a gripping device 30 is positioned from above in the direction of the cutting table 10, which in the embodiment of the FIGS. 1a-1f to raise the blank. As in Figure 1c 2, the gripping device 30 is positioned and moved in the direction of the blank 2 until the gripping device 30 contacts the blank 2 (FIG. Figure 1d ).

Nachdem die Greifeinrichtung 30 das textile Halbzeug 1 kontaktiert und den Zuschnitt 2 entsprechend der Ausgestaltung der Greifeinrichtung 30 greift, wird die Greifeinrichtung 30 angehoben, wodurch der Zuschnitt gegenüber dem auf dem Schneidtisch 10 verbleibenden Verschnitt angehoben wird. Wie in Figur 1b in der Seitenansicht gezeigt, wird der Zuschnitt 2 durch die Greifeinrichtung 30 gegriffen und angehoben, so dass der Zuschnitt 2 von dem Schneidtisch 10 gelöst wird und diesen nicht mehr kontaktiert. Der Verschnitt 3 hingegen verbleibt auf dem Schneidtisch 10, so dass im Querschnitt, wie er in der Seitenansicht der Figuren 1a-1g gezeigt ist, ein Spalt 4 zwischen dem angehobenen Zuschnitt 2 und dem verbleibenden Verschnitt 3 entsteht.After the gripping device 30 contacts the textile semifinished product 1 and grips the blank 2 in accordance with the design of the gripping device 30, the gripping device 30 is raised, as a result of which the blank opposite to the one on the Cutting table 10 remaining waste is raised. As in FIG. 1b shown in side view, the blank 2 is gripped and lifted by the gripping device 30, so that the blank 2 is released from the cutting table 10 and no longer contacted. The waste 3, however, remains on the cutting table 10, so that in cross section, as in the side view of FIGS. 1a-1g is shown, a gap 4 between the raised blank 2 and the remaining waste 3 is formed.

Selbstverständlich ist der Kerngedanke des vorliegenden Verfahrens auch andersherum möglich, so dass der Verschnitt mithilfe der Greifeinrichtung angehoben wird und der Zuschnitt auf dem Schneidtisch verbleibt. Die in Figur 1e dargestellte Variante, bei der der Zuschnitt 2 durch die Greifeinrichtung 30 angehoben wird, hat jedoch den Vorteil, dass der Zuschnitt so gleich einer nachgelagerten automatisierten Prozesskette zur Herstellung eines Faserverbundbauteils zugeführt werden kann.Of course, the core idea of the present method is also possible the other way around, so that the waste is raised by means of the gripping device and the blank remains on the cutting table. In the Figure 1e illustrated variant in which the blank 2 is raised by the gripping device 30, however, has the advantage that the blank can be fed so equal to a downstream automated process chain for producing a fiber composite component.

Wie in Figur 1d in der Seiten- bzw. Querschnittsdarstellung rechts gezeigt, sind nicht durchtrennte Fasern bzw. Fäden 5 verblieben, die bei der räumlichen Trennung von Zuschnitt und Verschnitt und der Entstehung des Spaltes 4 sichtbar werden. Diese nicht durchtrennten Fasern bzw. Fäden 5 sind ein Grund dafür, dass der Prozessschritt des Zuschnitts nach derzeitigem Stand der Technik nicht ohne Weiteres automatisierbar ist.As in Figure 1d in the side or cross-sectional representation shown on the right, not severed fibers or threads 5 remain, which are visible in the spatial separation of blank and waste and the formation of the gap 4. These non-severed fibers or threads 5 are one reason why the process step of cutting according to the current state of the art can not be easily automated.

Nachdem nun der Spalt 4 durch das Anheben des Zuschnitts 2 entstanden ist, wird durch diesen entstandenen Spalt 4 mindestens ein Schneidmesser 41 einer zweiten Schneidvorrichtung 40 hindurchgeführt, wie es in Figur 1f dargestellt ist. Das Schneidmesser 41 wird dabei zwischen Zuschnitt und Verschnitt hindurchgeführt und durchtrennt dabei die bis jetzt noch nicht durchtrennten Fasern bzw. Fäden 5, so dass am Ende des Hindurchführens des Schneidmessers 41 der Zuschnitt vollständig vom Verschnitt getrennt ist.Now that the gap 4 is formed by the lifting of the blank 2, at least one cutting blade 41 of a second cutting device 40 is passed through this resulting gap 4, as in FIG. 1f is shown. The cutting blade 41 is thereby passed between blank and waste and thereby severed the not yet severed fibers or threads 5, so that at the end of the passage of the cutting blade 41, the blank is completely separated from the waste.

Sämtliche Rückstände sind nunmehr vollständig durchtrennt, so dass die Greifeinrichtung 30 den Zuschnitt 2 vollständig anheben und der weiteren Prozesskette zuführen kann. Auf dem Schneidtisch 10 verbleibt dabei der übrig gebliebene Verschnitt 3 aus dem textilen Halbzeug 1, der dann automatisiert oder händisch abgesammelt werden kann (Figur 1e).All residues are now completely severed, so that the gripping device 30 completely lift the blank 2 and feed it to the further process chain can. On the cutting table 10, the remaining waste 3 remains from the semi-finished textile 1, which can then be collected automatically or by hand ( Figure 1e ).

Figur 2 zeigt schematisch einige Ausführungsformen der zweiten Schneidvorrichtung 40 und ihre jeweiligen Schneidmesser 41. In der unteren Abbildung der Figur 2 ist eine Anordnung zweier Schneidmesser 41 dargestellt, die jeweils über eine Mehrzahl von Schneidzähnen 42 verfügen. Die Schneidzähne 42 haben dabei eine dreieckige Grundfläche und sind in Hindurchführrichtung spitz zulaufend. FIG. 2 schematically shows some embodiments of the second cutting device 40 and their respective cutting blades 41. In the lower figure of the FIG. 2 an arrangement of two cutting blades 41 is shown, each having a plurality of cutting teeth 42. The cutting teeth 42 have a triangular base and are tapered in the direction of passage.

Die Schneidmesser 41 sind dabei axial bewegbar, und zwar in der durch den Fall dargestellten Richtung Raxial.The cutting blades 41 are axially movable, in the direction R shown by the case axially .

In Figur 2 sind dabei jeweils zwei Schneidmesser in einer Anordnung dargestellt, wobei die beiden Schneidmesser 41 jeweils gegenläufig sind, so dass ein Schneidmesser immer in eine axiale Richtung bewegt wird, die gegenläufig zu der Bewegung des anderen Schneidmessers ist. Hierdurch wird erreicht, dass die Fäden in Art eines Schneidtrimmers geschnitten werden, wenn die nicht durchtrennten Fasern bzw. Fäden zwischen die Schneidzähne 42 der sich bewegenden Schneidmesser 41 geraten.In FIG. 2 each two cutting blades are shown in an arrangement, the two cutting blades 41 are each in opposite directions, so that a cutting blade is always moved in an axial direction, which is opposite to the movement of the other cutting blade. Hereby it is achieved that the threads are cut in the manner of a cutting trimmer when the non-severed fibers or threads fall between the cutting teeth 42 of the moving cutting blades 41.

Um zu verhindern, dass die Fäden bzw. Fasern aus der Schneidzahnanordnung herausgedrückt werden, können Widerhaken 43 an den Schneidzähnen 42 vorgesehen sein, die in der oberen Darstellung der Figur 2 gezeigt ist.In order to prevent the threads or fibers from being pressed out of the cutting tooth arrangement, barbs 43 may be provided on the cutting teeth 42, which in the upper illustration of FIGS FIG. 2 is shown.

Hierdurch kann prozesssicher die Durchtrennung der Fasern realisiert werden.As a result, the severing of the fibers can be realized reliably.

Figur 3 zeigt schematisch eine zweite Schneidvorrichtung 40 mit zwei gegenläufig axial bewegbaren Schneidmessern 41, die an einem Messerbalken 44 angeordnet sind. Die Schneidmesser 41 können an dem Messerbalken 44 dabei so angeordnet sein, dass sie axial bewegbar sind und eine Art Schneidtrimmer bilden. FIG. 3 schematically shows a second cutting device 40 with two counter-axially movable cutting blades 41 which are arranged on a cutter bar 44. The cutting blades 41 may be arranged on the cutter bar 44 so that they are axially movable and form a kind of cutting trimmer.

An dem Messerbalken 44 sind des Weiteren Stützrollen 45 angeordnet, um zu verhindern, dass der Messerbalken 44 auf der gesamten Breite des Schneidtisches freitragend sein muss.Support rollers 45 are also disposed on the cutter bar 44 to prevent the cutter bar 44 from being cantilevered over the entire width of the cutting table.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
- textiles Halbzeug- semi-finished textile
22
- Zuschnitt- cut
33
- Verschnitt- blend
44
- Spalt- split
55
- nicht durchtrennte Fasern/Fäden- not severed fibers / threads
1010
- Schneidtisch- cutting table
2020
- Schneidportal- Cutting portal
2121
- Bewegungsautomat- Motion machine
2222
- Schneidkopf- Cutting head
2323
- Schneidmesser des Schneidkopfes- Cutting knife of the cutting head
3030
- Greifeinrichtung- Gripping device
4040
- zweite Schneidvorrichtung- Second cutting device
4141
- Schneidmesser- cutting knife
4242
- Schneidzähne- cutting teeth
4343
- Widerhaken- barbs
4444
- Messerbalken- knife bar
4545
- Stützrollen- Support rollers

Claims (17)

  1. Method for manufacturing a cutting (2) from at least one textile semi-finished product (1) with
    • placing at least one textile semi-finished product (1) in a cutting tool (10), and
    • cutting the at least one textile semi-finished product (1) introduced into the cutting tool (10) by means of a first cutting device (20) in accordance with a predetermined cutting geometry of the cutting (2) in order to produce the cutting (2) from the at least one textile semi-finished product (1),
    • gripping the cutting (2) and lifting the cutting (2) relative to the offcuts (3) - or the other way round - by means of a gripping device (30), so that a gap (4) is formed in the cross-section between the cutting (2) and the offcuts (3) as a result of the lifting, the cutting (2) and the offcuts (3) formed together the at least one textile semi-finished product (1),
    characterized by
    • passing through at least one cutting blade (41) of a second cutting device (40) through the resulting gap (4) between cutting (2) and offcuts (3).
  2. Method according to claim 1, characterized in that the at least one textile semi-finished product (1) is placed on a tool surface of the cutting tool (10) and is cut lying on the tool surface.
  3. Method according to claim 1 or 2, characterized in that the cutting (2) is raised relative to the offcuts (3) - or vice versa - by means of the gripping device (30) in such a way that the plane of the cutting spanned by the flat cutting (2) is different from the plane of the offcuts spanned by the flat offcuts (3), or in that the cutting edge of the cutting (2) is spatially spaced apart from the cutting edge of the offcuts (3).
  4. Method according to one of the preceding claims, characterized in that the at least one cutting blade (41) of the second cutting device (40) is guided substantially parallel to the cutting (2) and/or offcuts (3) and/or substantially parallel to the cutting edge of the cutting (2) and/or offcuts edge of the offcuts (3) through the resulting gap (4).
  5. Method according to one of the preceding claims, characterized in that the second cutting device (40) is provided in such a way that at least two axially movable cutting blades (41) are provided, which are moved axially in opposite directions when passing through the resulting gap (4).
  6. Method according to one of the preceding claims, characterized in that the at least one cutting blade (41) of the second cutting device (40) is excited to vibrate during passing through the gap (4).
  7. Method according to one of the preceding claims, characterized in that the at least one cutting blade (41) of the second cutting device (40) is guided through the gap (4) by means of an automatic movement device (21) of the second cutting device (40), on which the at least one cutting blade (41) is arranged.
  8. Method for manufacturing a fibre composite component from a fibre composite material which has a fibre material and a matrix material, wherein the fibre material is provided as textile semi-finished products (1), wherein a cutting (2) is produced automatically from at least one of the provided textile semi-finished products (1) according to the method according to one of claims 1 to 7 and the fibre composite component is then produced from the produced cutting (2).
  9. Installation for manufacturing of a cutting (2) from at least one textile semi-finished product (1) with
    • a cutting tool (10) into which the at least one textile semi-finished product (1) can be introduced,
    • a first cutting device (20) which is designed to cut the at least one textile semi-finished product (1) introduced into the cutting tool (10) in accordance with a predetermined cutting geometry of the cutting (2),
    • a gripping device (30), which is designed for gripping the cutting (2) and lifting the cutting (2) relative to the offcuts (3) - or vice versa - in such a way that a gap (4) is formed in the cross-section of the textile semi-finished product (1) between the cutting (2) and the offcuts (3) as a result of the lifting, the cutting (2) and the offcuts (3) formed together the at least one textile semi-finished product (1),
    characterized by
    • a second cutting device (40) which has at least one cutting blade (41) which is designed such that it can be guided through the resulting gap (4) between cutting (2) and offcuts (3).
  10. Installation according to claim 9, characterized in that the cutting tool (10) has a tool surface on which the at least one textile semi-finished product (1) can be deposited.
  11. Installation according to claim 9 or 10, characterized in that the first cutting device (20) is a cutting portal which has at least one cutting blade (23), which can be moved relative to the cutting tool (10), for cutting the at least one textile semi-finished product (1) introduced into the cutting tool (10), or in that the first cutting device (20) is an articulated arm robot which has, as end effector, at least one cutting blade for cutting the at least one textile semi-finished product (1) introduced into the cutting tool (10).
  12. Installation according to one of claims 9 to 11, characterized in that the second cutting device (40) is designed in such a way that the at least one cutting blade (41) can be guided through the resulting gap (4) substantially parallel to the cutting (2) and/or offcuts (3) and/or substantially parallel to the cutting edge of the cutting (2) and/or offcuts edge of the offcuts (3).
  13. Installation according to one of claims 9 to 12, characterized in that the second cutting device (40) has at least two axially movable cutting blades (41) which are designed to be movable in opposite directions when passing through the resulting gap (4).
  14. Installation according to any one of claims 9 to 13, characterized in that said at least one cutting blade (41) has a plurality of cutting teeth (42) aligned in the feed direction.
  15. Installation according to claim 14, characterized in that one, several or all of the cutting teeth (42) of the at least one cutting blade (41) have barbs (43).
  16. Installation according to one of claims 9 to 15, characterized in that the second cutting device (40) is designed for generating an oscillation on the cutting blade (41) while the at least one cutting blade (41) is passed through the resulting gap (4).
  17. Installation according to one of claims 9 to 16, characterized in that the at least one cutting blade (41) has one or more support rollers (45).
EP17197378.7A 2016-10-20 2017-10-19 Method and assembly for producing a blank from textile semi finished products Active EP3312335B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016120008.5A DE102016120008A1 (en) 2016-10-20 2016-10-20 Method and plant for producing a blank from textile semi-finished products

Publications (3)

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EP3312335A2 EP3312335A2 (en) 2018-04-25
EP3312335A3 EP3312335A3 (en) 2018-05-16
EP3312335B1 true EP3312335B1 (en) 2019-08-21

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Application Number Title Priority Date Filing Date
EP17197378.7A Active EP3312335B1 (en) 2016-10-20 2017-10-19 Method and assembly for producing a blank from textile semi finished products

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EP (1) EP3312335B1 (en)
DE (1) DE102016120008A1 (en)

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Publication number Priority date Publication date Assignee Title
US1788084A (en) * 1929-04-09 1931-01-06 Melville G Curtis Pile fabric and method of making the same
US5101747A (en) * 1989-12-19 1992-04-07 Gerber Garment Technology, Inc. Apparatus and method for separating pattern pieces from waste material
US5092829A (en) * 1989-12-19 1992-03-03 Gerber Garment Technology, Inc. Method and apparatus for bundling and removing stacks of pieces cut from layups of sheet material
US5079810A (en) * 1990-12-28 1992-01-14 E. I. Du Pont De Nemours And Company Ultrasonic cutting of fabric tufts to provide improved retention of tuft indentity during use
DE4204756A1 (en) * 1992-02-18 1993-05-13 Wuestenberg Dieter Prof Dr Ing Cut fabric sepn. without manual work - gives clamping action to waste part to separate cut pattern sections by relative movement
DE102007061427B4 (en) 2007-12-20 2009-11-12 Airbus Deutschland Gmbh Apparatus for cutting and handling a substantially planar blank from a CFRP semi-finished product and method
DE102011076152A1 (en) * 2011-05-19 2012-11-22 Dieffenbacher GmbH Maschinen- und Anlagenbau Method and device for transporting a cut out of a flat fiber fabric fiber contour in the course of the production of fiber-reinforced plastic molded parts
DE102013109857A1 (en) * 2013-09-09 2015-03-12 Dieffenbacher GmbH Maschinen- und Anlagenbau Device and method for cutting and handling a planar blank, in particular for the production of components made of fiber composite material

Non-Patent Citations (1)

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Title
None *

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Publication number Publication date
EP3312335A3 (en) 2018-05-16
DE102016120008A1 (en) 2018-04-26
EP3312335A2 (en) 2018-04-25

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