EP3938190A1 - Verfahren und system zum erzeugen eines faservorformlings - Google Patents
Verfahren und system zum erzeugen eines faservorformlingsInfo
- Publication number
- EP3938190A1 EP3938190A1 EP20712266.4A EP20712266A EP3938190A1 EP 3938190 A1 EP3938190 A1 EP 3938190A1 EP 20712266 A EP20712266 A EP 20712266A EP 3938190 A1 EP3938190 A1 EP 3938190A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fiber
- ultrasound
- individual layers
- binder
- fiber preforms
- 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.)
- Withdrawn
Links
- 239000000835 fiber Substances 0.000 title claims abstract description 113
- 238000000034 method Methods 0.000 title claims abstract description 72
- 239000011230 binding agent Substances 0.000 claims abstract description 51
- 239000002657 fibrous material Substances 0.000 claims abstract description 27
- 230000004913 activation Effects 0.000 claims abstract description 25
- 238000000926 separation method Methods 0.000 claims abstract description 20
- 238000003825 pressing Methods 0.000 claims abstract description 11
- 239000004753 textile Substances 0.000 claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 238000005520 cutting process Methods 0.000 claims description 47
- 238000002604 ultrasonography Methods 0.000 claims description 37
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 7
- 239000004917 carbon fiber Substances 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 5
- 239000004760 aramid Substances 0.000 claims description 3
- 229920006231 aramid fiber Polymers 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 47
- 230000008901 benefit Effects 0.000 description 9
- 230000001070 adhesive effect Effects 0.000 description 8
- 239000000047 product Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 238000004080 punching Methods 0.000 description 5
- 238000007493 shaping process Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 4
- 229920001169 thermoplastic Polymers 0.000 description 4
- 239000004416 thermosoftening plastic Substances 0.000 description 4
- 230000003213 activating effect Effects 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 229920001187 thermosetting polymer Polymers 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 1
- 239000004918 carbon fiber reinforced polymer Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000011151 fibre-reinforced plastic Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
- B29C70/46—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs
- B29C70/465—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs and impregnating by melting a solid material, e.g. sheets, powders of fibres
-
- 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
- B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/08—Means for treating work or cutting member to facilitate cutting
- B26D7/086—Means for treating work or cutting member to facilitate cutting by vibrating, e.g. ultrasonically
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B11/00—Making preforms
- B29B11/14—Making preforms characterised by structure or composition
- B29B11/16—Making preforms characterised by structure or composition comprising fillers or reinforcement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
- B29C70/545—Perforating, cutting or machining during or after moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2793/00—Shaping techniques involving a cutting or machining operation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/38—Automated lay-up, e.g. using robots, laying filaments according to predetermined patterns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/25—Solid
- B29K2105/253—Preform
- B29K2105/256—Sheets, plates, blanks or films
Definitions
- the present invention relates to a method and system for producing a fiber preform according to the preamble of claim 1 and a system for producing a fiber preform according to the preamble of claim 11.
- Fiber-reinforced components are usually made from dry or pre-impregnated semi-finished fiber products.
- a fiber preform is usually first made from these semifinished fiber products, i.e. a dry fiber package which at least roughly anticipates the later shape of the component.
- the dry semi-finished fiber products are made up as textile preliminary products, for example woven or non-woven fabrics, and then brought into the desired shape, i.e. the shape of the fiber preform, through reorientation and reshaping of the fiber structure.
- the fixation of the fiber preforms can take place, for example, with the aid of a binder system.
- the binder systems used are mostly thermoset or thermoplastic substances that are applied to the semifinished fiber product in powder form and in relatively small amounts, for example in the range of two to five percent by weight, and activated under the influence of temperature or by increasing the temperature.
- the fiber preforms fixed in this way can then be separated, for example by means of suitable cutting tools.
- the fiber-reinforced components are finally finished by soaking in a matrix material or by injecting the matrix material, for example resin, and then drying.
- DE 10 2015 116 837 A1 describes an activation device for activating a binder when producing a fiber-reinforced plastic laminate.
- the activation device comprises at least one light-emitting diode that has a ZF WO 2020/182948 3n A ⁇ PCT / EP2020 / 056675 P
- DE 103 53 070 A1 discloses a device for activating binder on a semi-finished product by indirectly heating carbon fibers via an applied electrical voltage.
- the device comprises a fiber preform shaping device for shaping a fiber preform from a dry semi-finished fiber product containing carbon fibers.
- At least two electrodes are integrated into the fiber preform shaping device or are arranged thereon in order to apply an electrical voltage to at least some of the carbon fibers of the fiber preform.
- the binder can be activated in a comparatively shortened period of time, which in turn shortens the overall setting process.
- the invention relates to a method for producing a fiber preform, wherein at least one dry and textile fiber material is provided, wherein the fiber material is made up into a plurality of individual layers, the plurality of individual layers being provided with a binder, the plurality of individual layers to form a bundle is layered and wherein a plurality of interconnected fiber preforms is formed by pressing the container.
- Friedrichshafen 2019 03-13 according to the method is characterized in that a separation of the plurality of interconnected fiber preforms and an activation of the binder take place in a common process step.
- the invention thus describes a method in which a fiber preform is produced from textile fiber material in a series of process steps.
- the invention is based on a so-called “sequential manufacturing process”.
- the fiber preform is also known as a “preform” in the prior art and represents a blank that can be processed into a fiber-reinforced component using a matrix material, such as a resin, in the course of process steps following the method according to the invention.
- the fiber material is usually at least roughly made up, ie at least roughly cut into the desired later shape of the fiber preforms or the fiber-reinforced components, so that a large number of individual layers of the fiber material is created.
- the term “finishing” is therefore not only understood to mean cutting the fiber material, but also specifically folding or laying into a specific shape.
- the multitude of individual layers of the fiber material is provided with a binder which fulfills the function of an adhesive and typically consists of or comprises a thermoset or thermoplastic substance.
- the binding of the large number of individual layers can also only take place in a later process step, or it can also take place before the fiber material is made up. Both possibilities are equally preferred according to the invention.
- the individual layers were made up by means of cutting or another separation process, they are then layered or placed on top of one another, so that a bundle is created that consists of the large number of individual layers arranged on top of one another.
- the individual layers do not necessarily all have to have the same shape and do not all necessarily have to be arranged exactly one above the other. Rather, the individual individual layers each have that shape and are layered one on top of the other in such a way that they come as close as possible to the shape of the fiber preforms to be produced in the layered form, ie as a bundle. To do this, it may be necessary to ZF WO 2020/182948 3n A ⁇ PCT / EP2020 / 056675 P
- the bundle within the meaning of the invention is usually created immediately when the individual layers are folded.
- the bundle is mechanically pressed into the shape of the plurality of interconnected fiber preforms, e.g. using a hydraulic press with appropriately shaped press jaws.
- the multitude of interconnected fiber preforms are separated, i.e. the fiber preforms are released one at a time from the plurality of connected fiber preforms, e.g. by means of a cutting process.
- the binder is activated so that the individual layers are connected to one another by means of an adhesive effect.
- the invention thus leads to the advantage of a compact and shortened Fierstel treatment process of the fiber preform.
- the shortened fiering process in turn enables the number of produced fiber preforms to be increased per time unit and thus leads to a cost advantage over known fiering methods.
- the number of workstations, which are usually comparatively cost-intensive to purchase, can be reduced.
- the plurality of interconnected fiber preforms are additionally formed by pressing the container.
- the fiber material comprises carbon fibers and / or glass fibers and / or aramid fibers.
- the fiber material can be selected. It is also conceivable to combine two or more types of fiber materials in order to set the desired component properties in a targeted manner.
- the multiplicity of individual layers is aligned with respect to a fiber orientation of each individual layer in front of a layer for the bundle.
- the orientation can be the same for all individual layers or it can also be specifically different, for example offset by 90 ° for each individual layer. Likewise, e.g. a continuous offset of, for example, 10 ° in each case can also be provided. Since the fiber orientation, i.e. the alignment of the individual layers, has a significant impact on the component properties, these can be changed and adjusted as required.
- the fiber orientation of a plurality of individual layers is aligned along a main load direction of the component.
- the component is particularly resilient along its main load direction.
- the binder is activated by supplying heat.
- This type of bin derepttechnik is particularly suitable for binders that contain thermoset or thermoplastic substances or consist entirely of them.
- heat can be generated comparatively easily and can be supplied to the container or the individual layers in many different ways.
- the heat is supplied by means of ultrasound and / or by means of heat conduction.
- These ways of supplying heat offer different advantages and can be well suited under differently depending on the shape or material of the fiber preform to be produced.
- One advantage of the heat supply by means of ultrasound that is to say by means of high-frequency mechanical waves, is, for example, that the heat supply can be well dosed and evenly distributed due to the comparatively low heat output.
- an ultrasound source is preferably brought into contact with the material of the fiber preform in order to ensure that the ultrasound is introduced into the material of the fiber preform as effectively as possible.
- the heat input then takes place through external friction between the individual layers and through internal friction in the intermolecular interfaces of adjacent individual layers.
- the heat supply by means of heat conduction offers the advantage of a comparatively very fast supply of large amounts of heat.
- the heat is supplied by means of ultrasound via at least one sonotrode, the at least one sonotrode either being passed continuously over the plurality of interconnected fiber preforms or at regular intervals to the plurality of interconnected connected fiber preform is created.
- the at least one sonotrode either being passed continuously over the plurality of interconnected fiber preforms or at regular intervals to the plurality of interconnected connected fiber preform is created.
- the heat is supplied by means of heat conduction via at least one contact roller, the contact roller being heated and being guided over the plurality of interconnected fiber preforms.
- the contact roller is preferably electrically heatable and has a comparatively high thermal conductivity, which enables comparatively large amounts of heat to be fed into the container in a short time.
- the contact roller is preferably guided over the container under a defined contact pressure, so that the contact pressure results in a further improved adhesive effect of the binder between each two adjacent individual layers.
- the separation of the plurality of interconnected fiber preforms takes place by means of a cutting process, the cutting process taking place via a cutting tool excited by ultrasound to vibrate.
- the excitation of the cutting tool by means of ultrasound can take place continuously or at intervals, with the interval spacings preferably being selected in the case of an interval-like excitation such that the cutting tool always has an ultrasonic oscillation, that is to say that the interval distances are preferably such ZF WO 2020/182948 3n A ⁇ PCT / EP2020 / 056675 P
- the cutting tool is designed as a knife. But training as scissors or punch is also conceivable and preferred
- the adhesive effect between the multitude of individual layers is increased by the activation of the binder and its adhesive effect, so that it is in principle more difficult to pull individual individual layers out of the pressed container.
- the binder when the binder is activated, the required cutting force also increases, which must be applied in order to separate the multitude of interconnected fiber preforms by means of a cutting process.
- the oscillation process takes place at frequencies between 20 kHz and 40 kHz. This has proven particularly suitable in practical use.
- the separation of the plurality of interconnected fiber preforms and activation of the binder take place in a common process step, but at locally different locations of the plurality of interconnected fiber preforms.
- the contact roller for supplying heat and the knife for cutting can be arranged on a common tool holder, which is guided over the multitude of fiber preforms connected to one another. While the heat is then supplied via the contact roller at one point of the multitude of interconnected fiber preforms, the knife simultaneously separates the multitude of interconnected fiber preforms by the knife at a distance between the knife and the contact roll predetermined by the tool holder.
- the invention further relates to a system for producing a fiber preform, comprising a first device which is designed for converting the provided dry and textile fiber material into a plurality of individual layers, a second device which is designed to provide the plurality of individual layers with a binder and a third device which is designed for layering a bundle from the plurality of individual layers.
- the system according to the invention is characterized in that the system comprises a further device which is designed to separate the plurality of interconnected fiber preforms and to activate the binder in a common process step.
- the system preferably also comprises a fourth device which is designed for forming a plurality of interconnected fiber preforms by pressing the binding.
- the system according to the invention thus comprises all devices that are required to carry out the method according to the invention. This results in the advantages already mentioned.
- the first device is preferably designed as a cutting device or as a punching device. Cutting devices or punching devices are advantageously suitable for assembling different textile fiber materials. ZF WO 2020/182948 3n A ⁇ PCT / EP2020 / 056675 P
- the second device is preferably designed as a scattering device which in particular can apply a binder in powder form to the plurality of individual layers.
- the third device is preferably designed as a laying device which can grip, align and store the layers of a cell.
- the fourth device is preferably designed as a press, in particular as a hydraulic press.
- the hydraulic press is also designed to be heatable in order to enable activation of the binder at the same time as the pressing of the Ge bind.
- the further device is additionally designed to form a plurality of interconnected fiber preforms by pressing the container.
- the acquisition and provision of the fourth device can advantageously be dispensed with.
- the further device comprises a cutting tool that can be subjected to ultrasound and a sonotrode, the cutting tool that can be subjected to ultrasound and the sonotrode being fixedly arranged on a common tool holder.
- the cutting tool that can be acted upon by ultrasound is preferably designed as a knife that can be acted upon by ultrasound.
- the cutting tool that can be acted upon by ultrasound and the sonotrode are acted upon by ultrasound from a common ultrasound source. This results in the advantage that only a common ultrasound source has to be provided, which then equally applies ultrasound to the cutting tool and the sonotrode. The investment costs in the further device can thus be reduced.
- the further device comprises a cutting tool that can be subjected to ultrasound and a heatable contact roller, the cutting tool that can be subjected to ultrasound and the heatable contact roller being fixedly arranged on a common tool holder.
- the contact roller can be heated electrically. This has the advantage that the heat is generated directly in the contact roller and heat losses through a possible supply line can be avoided. In addition, the heat generation can be controlled comparatively precisely.
- the contact roller can preferably also be heated via a liquid medium, for example water or oil.
- a suitable feed device is provided which allows the contact roller to be supplied with the liquid medium.
- a suitable derivation is also provided.
- the system is designed to carry out the method according to the invention.
- FIG. 2 shows, by way of example and schematically, a possible embodiment of the further device which is designed to perform the separation of the plurality of interconnected fiber preforms and the activation of the binder in a common process step
- Fig. 3 exemplarily and schematically a further possible embodiment of the further device, which is designed to perform the separation of the plurality of interconnected fiber preforms and the activation of the binder in a common process step
- Fig. 4 exemplarily and schematically the already shown in Fig. 2 illustrated embodiment of the further device in the execution of the fiction, contemporary method and
- FIG. 5 also shows, by way of example and schematically, that already shown in FIG.
- Fig. 1 shows an example and schematically a sequence of a method according to the invention (Fig. 1 b) in comparison to a procedural ren known in the art (Fig. 1a).
- a first method step 20 is initially a tro- ZF WO 2020/182948 3n A ⁇ PCT / EP2020 / 056675 P
- the fiber material 1 is designed, for example, as a carbon fiber material 1 and is fed to a first device 2 which, for example, is designed as a cutting device 2.
- the fiber material 1 is assembled into a plurality of individual layers 3 of the fiber material 1 by means of the cutting device 2.
- the individual layers 3 are all designed with the same shape.
- the plurality of individual layers 3 is provided with a binder 5 comprising a thermoplastic substance by means of a second device 4.
- the second device 4 is designed, for example, as a scattering device 4 which applies the binder 5 in powder form to the plurality of individual layers 3.
- step 23 the multitude of individual layers 3 is layered to form a package 7, taking into account a fiber orientation of each individual layer.
- the bundle 7 thus consists of the multitude of individual layers 3.
- the layering of the multitude of individual layers 3 to form the bundle 7 is done by means of a third device 6, which is designed as a laying device 6, for example, and grips, aligns and removes the multitude of individual layers 3. can lay.
- a third device 6 which is designed as a laying device 6, for example, and grips, aligns and removes the multitude of individual layers 3. can lay.
- the known method and the method according to the invention do not differ according to the example.
- step 24 the container is now pressed in accordance with the known method
- a plurality of interconnected fiber preforms 8 are formed, the pressing taking place, for example, by means of a fourth device 9 designed as a hydraulic press 9.
- the binder 5 is activated by means of a contact heater 10, so that the binder 5 develops an adhesive effect between the individual layers 3 of the container 7 or the plurality of fiber preforms 8 connected to one another.
- the plurality of interconnected fiber preforms 8 are separated by means of a punching device 11.
- the separated fiber preforms 8 are transferred to another device, not shown in FIG. 1, for further processing.
- the method according to the invention differs from the known method steps 24, 25 and 26 in that in method step 27 the plurality of fiber preforms connected to one another simultaneously
- the further device 12 comprises, for example, a cutting tool 13 that can be acted upon by ultrasound and a sonotrode 14, the cutting tool 13 that can be acted upon by ultrasound and the sonotrode 14 being fixedly arranged on a common tool holder 15. Since the shaping, the separation of the multiplicity of interconnected fiber preforms 8 and the activation of the binder 5 take place simultaneously, a reduction in the production time required can be achieved compared with the known method. In addition, the necessary investment costs can be reduced because the purchase of the hydraulic cal press 9, the contact heater 10 and the punching device 11 can be dispensed with. Instead, only the further device 12 has to be purchased. In step 28, the individual fiber preforms 8 are now transferred to another device for further processing.
- Fig. 2 shows an example and schematically a possible embodiment of the wide Ren device 12, which is designed to perform the separation of the plurality of mitei nander connected fiber preforms 8 and the activation of the binder 5 in a common process step.
- the further device 12 shown by way of example in FIG. 2 comprises a cutting tool 13 designed as a knife 13, which can be acted upon by ultrasound, and a sonotrode 14 which are fixedly arranged on a common tool holder 15 at a predetermined distance.
- the knife 13 the plurality of interconnected fiber preforms 8 can be cut and thus separated.
- ultrasonic waves are introduced into the multitude of interconnected fiber preforms 8 via the sonotrode 14, which activate the binder 5 so that it develops its adhesive effect.
- the application of ultrasound to the knife 13 means that the fiber material 1 of the multiplicity of interconnected fiber preforms 8 can be cut comparatively easily and precisely.
- the knife 13 is assigned an ultrasonic source 17 and the sonotrode 14 is assigned an ultrasonic source 18. Due to the illustrated spacing of the knife 13 from the sonotrode 14, the separation and activation take place simultaneously, but at locally different locations of the multitude of interconnected fiber preforms 8. By aligning the further device 12 it can thus be determined whether an individual Fiber pre- ZF WO 2020/182948 3n A ⁇ PCT / EP2020 / 056675 P
- the common tool holder 15 can, for example, be connected to an industrial robot (not shown) or a CNC milling system (also not shown), which then guides and operates the additional tool 12 over the multitude of interconnected fiber preforms 8 in the course of executing the method according to the invention .
- FIG. 3 shows, by way of example and schematically, a further possible embodiment of the further device 12, which is designed to carry out the separation of the plurality of interconnected fiber preforms 8 and the activation of the binder 5 in a common process step.
- the further device 12 of FIG. 3 differs from the further device 12 of FIG. 2 in that, instead of the sonotrode 14, it comprises an electrically heatable contact roller 16.
- the heatable contact roller 16 is also firmly arranged with the knife 13 on the tool holder 15 common men.
- FIG. 4 shows, by way of example and schematically, the embodiment of the further device 12 already shown in FIG. 2 when carrying out the method according to the invention.
- the further device 12 comprises a cutting tool 13, designed as a knife 13, which can be acted upon by ultrasound, with an ultrasound source 17 and a sonotrode 14 with an ultrasound source 18, which stood at a predetermined distance from a common tool holder 15.
- the common tool holder 15 is exemplified by an industrial robot (not shown) via a plurality of interconnected fiber preforms 8.
- the plurality of interconnected fiber preforms 8 is stored on holders 19.
- the separation and activation take place simultaneously in a common process step, but separated locally by the spacing of the knife 13 from the sonotrode 14 in such a way that the fiber preforms 8 are separated before the binder 5 of the separated fiber preforms 8 is activated.
- FIG. 5 also shows, by way of example and schematically, the embodiment of the further device 12 already shown in FIG. 2 when executing the method according to the invention.
- the illustration in FIG. 5 differs from the illustration in FIG. 4 in the orientation of the further device 12:
- the orientation of the further device 12 is such that the plurality of fiber preforms 8 connected to one another are first used by means of the sonotrode 14 is subjected to ultra sound, so that an activation of the binder 5 takes place before the plurality of interconnected fiber preforms 8 are separated by means of the knife 13.
- the separation and activation take place simultaneously in a common process step, but locally separated by the spacing of the knife 13 from the sonotrode 14 in such a way that the binder 5 is activated before the fiber preforms 8 are separated.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Treatment Of Fiber Materials (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019203383.0A DE102019203383A1 (de) | 2019-03-13 | 2019-03-13 | Verfahren und System zum Erzeugen eines Faservorformlings |
| PCT/EP2020/056675 WO2020182948A1 (de) | 2019-03-13 | 2020-03-12 | Verfahren und system zum erzeugen eines faservorformlings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3938190A1 true EP3938190A1 (de) | 2022-01-19 |
Family
ID=69846078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20712266.4A Withdrawn EP3938190A1 (de) | 2019-03-13 | 2020-03-12 | Verfahren und system zum erzeugen eines faservorformlings |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US11981092B2 (de) |
| EP (1) | EP3938190A1 (de) |
| CN (1) | CN113631358A (de) |
| DE (1) | DE102019203383A1 (de) |
| WO (1) | WO2020182948A1 (de) |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR9405822A (pt) * | 1993-02-04 | 1995-12-05 | Vaupel Textilimaschinen Kg | Dispositivo para o corte ultra-sônico e/ou soldagem ultra-sônica de tiras |
| DE19902827C1 (de) * | 1999-01-15 | 2000-06-08 | Hielscher Gmbh | Verfahren zum Konstanthalten der mittleren Spaltbreite zwischen einer Sonotrode eines Ultraschall-Systems und einem als Gegenwerkzeug ausgebildeten Schneidwerkzeugs einer Ultraschall-Schneideinrichtung |
| US20040079477A1 (en) * | 2002-10-25 | 2004-04-29 | Lear Corporation | Method of making an interior trim part |
| DE10353070B4 (de) * | 2003-11-13 | 2005-09-15 | Airbus Deutschland Gmbh | Verfahren und Vorrichtung zur Binderaktivierung auf einem Faserhalbzeug/Preform durch direktes Erwärmen von Kohlenstofffasern über eine angelegte elektrische Spannung |
| DE102011102950A1 (de) * | 2011-05-31 | 2012-02-16 | Daimler Ag | Legekopf und ein Verfahren zur Herstellung von Textilvorformlingen aus Carbonfasern enthaltende Faseranordnungen |
| US20160368168A1 (en) * | 2013-12-04 | 2016-12-22 | Voith Patent Gmbh | Roller cutting unit and method for separating fibre material into sections |
| MX364036B (es) * | 2015-09-09 | 2019-04-11 | Nissan Motor | Metodo de fabricacion para material compuesto y aparato de fabricacion para material compuesto. |
| DE102015116837A1 (de) * | 2015-10-05 | 2017-04-06 | Airbus Defence and Space GmbH | Binderaktivierung mittels Leuchtdioden bei der Herstellung von faserverstärktem Kunststofflaminat |
| JP6601561B2 (ja) * | 2016-06-03 | 2019-11-06 | 日産自動車株式会社 | 複合材料の製造方法および製造装置 |
| DE202016104843U1 (de) * | 2016-09-02 | 2017-11-03 | Dieffenbacher GmbH Maschinen- und Anlagenbau | Drapiervorrichtung zur Herstellung eines dreidimensionalen Vorformlings |
| WO2018197437A1 (en) * | 2017-04-25 | 2018-11-01 | Hexcel Reinforcements Uk Limited | A preform with local reinforcement |
| JP2020066168A (ja) * | 2018-10-24 | 2020-04-30 | 三菱重工業株式会社 | プリプレグ自動積層装置 |
| CN109434268B (zh) * | 2018-12-28 | 2020-10-23 | 上海骄成机电设备有限公司 | 一种超声波切割焊接复合机构 |
| US11511451B2 (en) * | 2020-01-31 | 2022-11-29 | The Boeing Company | Automated method and system for trimming a multi-ply structure |
| GB2602299A (en) * | 2020-12-22 | 2022-06-29 | Airbus Operations Ltd | Improved edge stability |
-
2019
- 2019-03-13 DE DE102019203383.0A patent/DE102019203383A1/de active Pending
-
2020
- 2020-03-12 CN CN202080020435.6A patent/CN113631358A/zh active Pending
- 2020-03-12 US US17/438,608 patent/US11981092B2/en active Active
- 2020-03-12 WO PCT/EP2020/056675 patent/WO2020182948A1/de not_active Ceased
- 2020-03-12 EP EP20712266.4A patent/EP3938190A1/de not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| US20220143936A1 (en) | 2022-05-12 |
| WO2020182948A1 (de) | 2020-09-17 |
| CN113631358A (zh) | 2021-11-09 |
| US11981092B2 (en) | 2024-05-14 |
| DE102019203383A1 (de) | 2020-09-17 |
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