US20220242060A1 - System for additively manufacturing composite structures - Google Patents
System for additively manufacturing composite structures Download PDFInfo
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- US20220242060A1 US20220242060A1 US17/659,968 US202217659968A US2022242060A1 US 20220242060 A1 US20220242060 A1 US 20220242060A1 US 202217659968 A US202217659968 A US 202217659968A US 2022242060 A1 US2022242060 A1 US 2022242060A1
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- reinforcement
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- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
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- B33Y70/00—Materials specially adapted for additive manufacturing
- B33Y70/10—Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/14—Alloys containing metallic or non-metallic fibres or filaments characterised by the fibres or filaments
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Definitions
- the present disclosure relates generally to a manufacturing system and, more particularly, to a system for additively manufacturing composite structures.
- Continuous fiber 3D printing involves the use of continuous fibers embedded within a matrix discharging from a moveable print head.
- the matrix can be a traditional thermoplastic (e.g., solid or liquid), a powdered metal, a thermoset resin (e.g., a UV curable, heat curable, and/or two-part resin), or a combination of any of these and other known matrixes.
- a head-mounted cure enhancer e.g., a UV light, an ultrasonic emitter, a heat source, a catalyst supply, etc.
- CF3D® provides for increased strength, compared to manufacturing processes that do not utilize continuous-fiber reinforcement, improvements can be made to the structure and/or operation of existing systems.
- the disclosed additive manufacturing system is uniquely configured to provide these improvements and/or to address other issues of the prior art.
- the present disclosure is directed to an additive manufacturing system.
- the additive manufacturing system may include a support, and a print head connected to and moveable by the support.
- the system may also include an encoder configured to generate a signal indicative of an amount of material passing through the print head, and a controller in communication with the encoder.
- the controller may be configured to selectively implement a corrective action in response to the signal.
- the present disclosure is directed to another additive manufacturing system.
- This system may include a support, a print head connected to and moveable by the support, and an encoder configured to generate a signal indicative of an amount of continuous reinforcement passing through the print head.
- the system may also include a cure enhancer configured to apply a cure energy to a matrix coating the continuous reinforcement, and a controller in communication with the support, the encoder, and the cure enhancer.
- the controller may be configured to determine an actual amount of the continuous reinforcement passing through the print head, and to make a comparison of the actual amount to a travel distance of the print head.
- the controller may also be configured to selectively perform at least one of the following when the comparison indicates that the actual amount is less than the travel distance: generating a notification alerting a technician of a potential malfunction, pausing a process of the print head, cancelling the process, or restarting the process.
- the present disclosure is directed to a method for additively manufacturing a composite structure.
- the method may include discharging from a print head a path of composite material, including a continuous reinforcement at least partially coated with a matrix, and determining an amount of the composite material being pulled through the print head during discharging.
- the method may also include moving the print head during discharging of the composite material and determining a travel distance of the print head.
- the method may further include selectively implementing a corrective action based on a difference between the amount of the composite material and the travel distance.
- FIG. 1 is an isometric illustration of an exemplary disclosed additive manufacturing system
- FIG. 2 is a diagrammatic illustration of an exemplary disclosed print head that may be utilized with the system of FIG. 1 ;
- FIGS. 3 and 4 are diagrammatic illustrations of another exemplary disclosed print head that may be utilized with the system of FIG. 1 .
- FIG. 1 illustrates an exemplary system 10 , which may be used to manufacture a composite structure 12 having any desired cross-sectional shape (e.g., ellipsoidal, polygonal, etc.).
- System 10 may include at least a moveable support 14 and a print head (“head”) 16 .
- Support 14 may be coupled to and configured to move head 16 .
- support 14 is a robotic arm capable of moving head 16 in multiple directions during fabrication of structure 12 , such that a resulting longitudinal axis of structure 12 is three-dimensional. It is contemplated, however, that support 14 could alternatively be a gantry, a hybrid gantry/arm, or another type of movement system that is capable of moving head 16 in multiple directions during fabrication of structure 12 .
- support 14 is shown as being capable of multi-axis movement (e.g., movement about six or more axes), it is contemplated that any other type of support 14 capable of moving head 16 in the same or in a different manner could also be utilized, if desired.
- a drive may mechanically couple head 16 to support 14 and may include components that cooperate to move and/or supply power or materials to head 16 .
- Head 16 may be configured to receive or otherwise contain a matrix.
- the matrix may include any type of material (e.g., a liquid resin, such as a zero-volatile organic compound resin; a powdered metal; a solid filament; etc.) that is curable.
- Exemplary matrixes include thermosets, single- or multi-part epoxy resins, polyester resins, cationic epoxies, acrylated epoxies, urethanes, esters, thermoplastics, photopolymers, polyepoxides, thiols, alkenes, thiol-enes, reversible resins (e.g., Triazolinedione, a covalent-adaptable network, a spatioselective reversible resin, etc.) and more.
- reversible resins e.g., Triazolinedione, a covalent-adaptable network, a spatioselective reversible resin, etc.
- the matrix inside head 16 may be pressurized, for example by an external device (e.g., an extruder or another type of pump—not shown) that is fluidly connected to head 16 via a corresponding conduit (not shown).
- the matrix pressure may be generated completely inside of head 16 by a similar type of device.
- the matrix may be gravity-fed through and/or mixed within head 16 .
- the matrix inside head 16 may need to be kept cool and/or dark to inhibit premature curing; while in other instances, the matrix may need to be kept warm for similar reasons. In either situation, head 16 may be specially configured (e.g., insulated, temperature-controlled, shielded, etc.) to provide for these needs.
- the matrix may be used to coat, encase, or otherwise at least partially surround or saturate (e.g., wet) any number of continuous reinforcements (e.g., separate fibers, tows, rovings, ribbons, and/or sheets of material) and, together with the reinforcements, make up at least a portion (e.g., a wall) of composite structure 12 .
- the reinforcements may be stored within (e.g., on separate internal spools) or otherwise passed through head 16 (e.g., fed from one or more external spools).
- the reinforcements may be of the same type and have the same diameter and cross-sectional shape (e.g., circular, square, flat, hollow, solid, etc.), or of a different type with different diameters and/or cross-sectional shapes.
- the reinforcements may include, for example, carbon fibers, vegetable fibers, wood fibers, mineral fibers, glass fibers, metallic wires, optical tubes, etc. It should be noted that the term “reinforcement” is meant to encompass both structural and non-structural types of continuous materials that can be at least partially encased in the matrix discharging from head 16 .
- the reinforcements may be exposed to (e.g., coated with) the matrix while the reinforcements are inside head 16 , while the reinforcements are being passed to head 16 (e.g., as a prepreg material), and/or while the reinforcements are discharging from head 16 , as desired.
- the matrix, dry reinforcements, and/or reinforcements that are already exposed to the matrix may be transported into head 16 in any manner apparent to one skilled in the art.
- the matrix and reinforcement may be discharged from head 16 via at least two different modes of operation.
- a first mode of operation the matrix and reinforcement are extruded (e.g., pushed under pressure and/or mechanical force) from head 16 , as head 16 is moved by support 14 to create the 3-dimensional shape of structure 12 .
- a second mode of operation at least the reinforcement is pulled from head 16 , such that a tensile stress is created in the reinforcement during discharge.
- the matrix may cling to the reinforcement and thereby also be pulled from head 16 along with the reinforcement, and/or the matrix may be discharged from head 16 under pressure along with the pulled reinforcement.
- the resulting tension in the reinforcement may increase a strength of structure 12 (e.g., by aligning the reinforcements, inhibiting buckling, equally distributing loads, etc.), while also allowing for a greater length of unsupported structure 12 to have a straighter trajectory (e.g., by creating moments that oppose gravity).
- the reinforcement may be pulled from head 16 as a result of head 16 moving away from an anchor point 18 .
- a length of matrix-impregnated reinforcement may be pulled and/or pushed from head 16 , deposited onto a stationary or moveable anchor point 18 , and cured, such that the discharged material adheres to anchor point 18 .
- head 16 may be moved away from anchor point 18 , and the relative movement may cause additional reinforcement to be pulled from head 16 .
- the movement of the reinforcement through head 16 could be assisted (e.g., via internal feed mechanisms), if desired.
- the discharge rate of the reinforcement from head 16 may primarily be the result of relative movement between head 16 and anchor point 18 , such that tension is created within the reinforcement.
- any number of reinforcements may be passed axially through head 16 and be discharged together with at least a partial coating of matrix (matrix represented as “M” in FIG. 2 ).
- one or more cure enhancers e.g., one or more light sources, ultrasonic emitters, lasers, heaters, catalyst dispensers, microwave generators, etc.
- a cure energy e.g., light energy, electromagnetic radiation, vibrations, heat, a chemical catalyst or hardener, or other form of actively-applied energy.
- the cure energy may trigger a chemical reaction, increase a rate of chemical reaction already occurring within the matrix, sinter the material, harden the material, or otherwise cause the material to cure as it discharges from head 16 .
- a controller 22 may be provided and communicatively coupled with support 14 , head 16 , and/or any number and type of cure enhancers 20 .
- Controller 22 may embody a single processor or multiple processors that include a means for controlling an operation of system 10 .
- Controller 22 may include one or more general- or special-purpose processors or microprocessors.
- Controller 22 may further include or be associated with a memory for storing data such as, for example, design limits, performance characteristics, operational instructions, matrix characteristics, reinforcement characteristics, characteristics of structure 12 , and corresponding parameters of each component of system 10 .
- Various other known circuits may be associated with controller 22 , including power supply circuitry, signal-conditioning circuitry, solenoid/motor driver circuitry, communication circuitry, and other appropriate circuitry.
- controller 22 may be capable of communicating with other components of system 10 via wired and/or wireless transmission.
- One or more maps may be stored in the memory of controller 22 and used during fabrication of structure 12 .
- Each of these maps may include a collection of data in the form of models, lookup tables, graphs, and/or equations.
- the maps are used by controller 22 to determine desired characteristics of cure enhancers 20 , the associated matrix, and/or the associated reinforcements at different locations within structure 12 .
- the characteristics may include, among others, a type, quantity, and/or configuration of reinforcement and/or matrix to be discharged at a particular location within structure 12 , and/or an amount, intensity, shape, and/or location of desired curing.
- Controller 22 may then correlate operation of support 14 (e.g., the location and/or orientation of head 16 ) and/or the discharge of material from head 16 (a type of material, desired performance of the material, cross-linking requirements of the material, a discharge rate, etc.) with the operation of cure enhancers 20 , such that structure 12 is produced in a desired manner.
- support 14 e.g., the location and/or orientation of head 16
- discharge of material from head 16 a type of material, desired performance of the material, cross-linking requirements of the material, a discharge rate, etc.
- head 16 may include, among other things, a matrix reservoir 24 and an outlet (e.g., a nozzle) 26 removably connected to matrix reservoir 24 .
- outlet 26 is a multi-channel nozzle configured to discharge composite material having a generally rectangular, flat, or ribbon-like cross-section.
- the configuration of head 16 may allow outlet 26 to be swapped out for another outlet 26 (not shown) that discharges composite material having a different shape (e.g., a circular cross-section, a tubular cross-section, etc.).
- Fibers, tubes, and/or other reinforcements may pass through matrix reservoir 24 and be wetted (e.g., at least partially coated and/or fully saturated) with matrix material prior to discharge.
- the reinforcement may be selectively wetted or otherwise coated or saturated with the matrix at a location upstream of reservoir 24 . Reservoir 24 may still be used in these applications, left empty, or completely omitted, as desired.
- FIG. 2 illustrates a wetting mechanism (“mechanism”) 27 , which can be used together with or in place of reservoir 24 .
- Mechanism 27 may be configured to receive reinforcement (e.g., a dry or pre-impregnated reinforcement from an internal and/or external spool 36 ) and matrix (e.g., via an inlet 30 ), and to discharge a matrix-wetted reinforcement, which can then be discharged by head 16 in the manner described above.
- Mechanism 27 may be a relatively closed and higher-pressure device or a relatively open and lower-pressure mechanism, as desired.
- the supplied reinforcement may be routed through a bath of liquid matrix that is contained within mechanism 27 .
- Mechanism 27 may be an assembly of components that cooperate to saturate, coat, encapsulate, or at least partially wet the reinforcement passing therethrough with a desired amount of matrix, without significantly increasing tension within the reinforcement.
- These components may include, among other things, a matrix reservoir 28 that is in fluid communication with inlet 30 , a feeder 32 that is configured to direct reinforcement into matrix reservoir 28 , and a regulator 34 located at an exit of matrix reservoir 28 that is configured to limit an amount of matrix allowed to leave mechanism 27 with the reinforcement.
- Matrix reservoir 28 may function similar to matrix reservoir 24 described above, but is located in substantial isolation from head 16 (e.g., isolated from outlet 26 ). That is, matrix reservoir 28 may not be internal to head 16 , so as to reduce a likelihood of matrix material passing undetected and/or in undesired amounts through outlet 26 . In the embodiment where the internal matrix reservoir 24 of head 16 is eliminated, the external wetting mechanism 27 may feed directly into a stand-alone outlet 26 . In embodiments where matrix reservoir 24 is retained, matrix reservoir 24 may primarily be used to collect excess resin that drips from the reinforcement during passage through head 16 .
- matrix reservoir 24 could be used to apply additional matrix and/or a different matrix (e.g., a catalyst or outer coating) to the already wetted reinforcement. It is further contemplated that matrix reservoir 28 could be internal to head 16 (e.g., within the same housing), if desired.
- matrix reservoir 28 could be internal to head 16 (e.g., within the same housing), if desired.
- matrix reservoir 28 may be substantially sealed (e.g., via one or more o-rings, gaskets, etc. —not shown), such that matrix reservoir 28 may be tilted or even completely inverted, without significant matrix leakage.
- inlet 30 is shown as being located at a lowest gravitational point of matrix reservoir 28 (e.g., to allow for filling and draining via the same port), this location could be changed.
- a reinforcement inlet and a reinforcement exit are both shown as being located at higher gravitational points of matrix reservoir 28 , these locations could also change. The current configuration allows for gravity to pull excess matrix from the exiting reinforcement back into matrix reservoir 28 .
- Matrix reservoir 28 may be manually and/or automatically filled with matrix. For example, when a periodic inspection of matrix reservoir 28 reveals a low-level status, additional matrix may be directed through inlet 30 (e.g., via opening of a valve and/or activation of a pump—both not shown). Alternatively, a sensor (e.g., a resistive level or acoustic sensor—not shown) may be used to automatically direct additional matrix through inlet 30 in response to a detected low-level status. In another embodiment, matrix may be directed through inlet 30 based on an assumed consumption rate, in addition to or instead of the other fill strategies disclosed above.
- a sensor e.g., a resistive level or acoustic sensor—not shown
- Feeder 32 may be located between a supply of reinforcement (e.g., spool) 36 and matrix reservoir 28 and configured to reduce tension within the reinforcement through outlet 26 by selectively pulling reinforcement from spool 36 .
- spool 36 when spool 36 is full of reinforcement, it may have a larger mass and associated inertia. If the reinforcement were to be pulled from spool 36 through outlet 26 simply by movement of head 16 away from anchor point 18 , as described above, enough tension could be created within the reinforcement to disrupt anchor point 18 under some conditions, break the reinforcement, and/or cause uneven printing within structure 12 .
- feeder 32 may selectively pull the reinforcement from spool 36 (and feed the reinforcement into matrix reservoir 28 , in some applications) at rate that is about equal to a rate at which the fiber is discharging through outlet 26 .
- Feeder 32 may include, among other things, at least one roller (e.g., two rollers 38 and 40 that are biased towards each other via a spring 42 ).
- rollers 38 , 40 may have friction-increasing features (e.g., teeth) to help reduce slippage of the reinforcement through feeder 32 , and/or be powered to rotate (e.g., by a motor—not shown).
- feeder 32 may alternatively or additionally function as an encoder, monitoring usage of reinforcement by head 16 and/or an amount of reinforcement remaining on spool 36 .
- at least one of rollers 38 , 40 may include indexing elements (e.g., a slotted disk, an imbedded magnet, an optical stripe, etc. —shown only in FIG. 3 ) 41 that are detected by an associated sensor (e.g., an electronic eye, a camera, a hall-effect sensor, etc. —shown only in FIG. 3 ) 43 . Based on a sensed number of revolutions of roller(s) 38 , 40 , an amount of reinforcement passing through feeder 32 may be determined. It should be noted that, although feeder 32 is shown as being located upstream of matrix reservoir 28 , feeder 32 (or only indexing elements 41 and associated sensor 43 ) could alternatively be located downstream, if desired.
- indexing elements e.g., a slotted disk, an imbedded magnet, an optical stripe, etc. —shown only in FIG. 3
- Matrix regulator 34 may be located at a reinforcement exit point of mechanism 27 and configured to mechanically remove excess matrix from the reinforcement passing therethrough.
- matrix regulator 34 includes one or more wipers (e.g., two opposing wipers) 44 that engage the wetted reinforcement. Wipers 44 may be biased towards each other (e.g., via coil springs 45 ) to sandwich and/or flexible to deform around the reinforcement.
- Matrix reservoir 28 may be generally open to a lower side of wipers 44 , such that removed matrix may be pulled by gravity back into reservoir 28 and reused.
- wipers 44 in addition to regulating an amount of matrix left clinging to the reinforcement, may also be used to induce a desired level of tension within the reinforcement, in some applications. For example, the spring rate of coil springs 45 , the flexibility of wipers 44 , and/or an engagement angle of wipers 44 may be selectively and/or actively adjusted to thereby adjust the tension level.
- any number of pulleys or other similar routing devices 46 may be arranged to help route the reinforcement along a desired path through wetting mechanism 27 .
- one or more routing devices 46 may be at least partially submerged inside matrix reservoir 28 at a location between feeder 32 and regulator 34 .
- one or more routing devices 46 may be located outside of matrix reservoir 28 at locations between regulator 34 and outlet 26 (e.g., above matrix reservoir 24 and in axial alignment with outlet 26 ). Routing devices 46 may be driven or spin freely, as desired.
- mechanism 27 is shown as being mounted to print head 16 , which is in turn mounted to support 14 , the reverse could be true.
- mechanism 27 could be mounted to support 14 completely independent of head 16 , if desired.
- mechanism 27 instead of being located axially adjacent head 16 , mechanism 27 could alternatively be located axially in line with head 16 (e.g., axially aligned with outlet 26 ). Other configurations may also be possible.
- feeder 32 when functioning as an encoder in the manner described above, may be utilized to determine when print head 16 and/or the manufacturing process has malfunctioned. Malfunctions experienced by print head 16 can include untacking of a path of discharged composite material (e.g., during cornering) and breaking of the reinforcement within the path. These malfunctions may be determined, for example, via a comparison of an actual amount (e.g., a length) of reinforcement passing through feeder 32 with an expected amount.
- an actual amount e.g., a length
- controller 22 may determine that either the reinforcement has become untacked from a remaining portion of structure 12 and is being towed through a shorter arc cutting across a desired corner or that the reinforcement has completely broken and is no longer being pulled out through outlet 26 .
- the expected amount of reinforcement passing through feeder 32 may be determined in any number of ways. For example, the expected amount may be determined based on progress of print head 16 through a tool path sequence and a known length of the sequence. In another example, the expected amount may be determined based on monitored movement of print head 16 away from anchor point 18 . Other methods may also be utilized.
- controller 22 may generate an alert indicating that the print process may have failed and that a technician should check the process. Additionally or alternatively, controller 22 may pause the process and await a confirmation from the technician that the process should continue. In some situations, controller 22 may cancel the process completely and, in some embodiments, restart the process.
- any of these above described responses may be selectively implemented based on a severity of the malfunction. For example, if the difference between the actual and expected reinforcement amounts is below a first threshold (e.g., indicating only that a corner may have been cut or cut by only a small amount), only the notification may be generated. While, if the difference is greater than the first threshold (e.g., indicating that the reinforcement may have broken), controller 22 may pause and/or cancel the process. Other responses may also be possible.
- a first threshold e.g., indicating only that a corner may have been cut or cut by only a small amount
- FIGS. 3 and 4 illustrate another exemplary head 16 that may be used with one or both of matrix reservoir 24 and mechanism 27 (referring to FIG. 2 ).
- outlet 26 may not resemble the nozzle shown in FIGS. 1 and 2 .
- outlet 26 of FIGS. 3 and 4 may be associated with a trailing compactor 48 (i.e., trailing relative to a normal travel direction of head 16 , as represented by an arrow 50 ) that functions as a tool-center-point of head 16 .
- Compactor 48 may be used to apply pressure to material discharged from head 16 via outlet 26 .
- compactor 48 may be driven to propel head 16 (e.g., via a motor 51 ) and/or selectively paired with another roller 52 to pull the reinforcement through outlet 26 . In this way, less (if any) tension may be generated within the reinforcement outside of head 16 due to movement of head 16 away from anchor point 18 (referring to FIG. 1 ). This may allow for the residual level of tension within each individual reinforcement to be more accurately controlled.
- roller 52 may be biased toward compactor 48 (e.g., via a coil spring 54 and a lever arm 55 ), such that the reinforcement(s) are sandwiched therebetween.
- Lever arm 55 may extend between compactor 48 and roller 52 , with coil spring 45 being located at an end adjacent compactor 48 .
- Roller 52 may be an idler-type of roller or, alternatively, may itself be driven (e.g., in addition to compactor 48 or instead of compactor 48 being driven) to rotate in a direction opposite that of compactor 48 .
- roller 52 may be operatively driven by motor 51 via a gear train 56 (shown only in FIG. 4 ), while compactor 48 is directly driven by motor 51 .
- a clutching mechanism could be associated with gear train 56 , such that roller 52 may only be selectively driven during driving of compactor 48 and/or so that compactor 48 may be driven at least partially independent of the rotation of roller 52 .
- a common mount 57 may be provided for compactor 48 , roller 52 , motor 51 , and/or gear train 56 .
- Mount 57 may include, among other things, protruding arms 57 a that extend to opposing ends of compactor 48 and roller 52 , one of arms 57 a being located between one of the ends and motor 51 and gear train 56 .
- a guide 59 may be connected to mount 57 at a location upstream of compactor 48 .
- Guide 59 may have one or more guiding features (e.g., grooves, channels, ribs, dividers, etc.) 61 that help to guide (e.g., align, separate, converge, shape, etc.) the reinforcements to compactor 48 .
- a cutting mechanism 58 may be integrated into roller 52 .
- cutting mechanism 58 embodies a blade that is normally recessed within roller 52 , such that the blade does not engage the reinforcements during normal discharge. At select timings, the blade may be pushed radially outward to protrude through or from an outer surface of roller 52 , thereby allowing the rotation of roller 52 to force the blade through the reinforcements and against a compliant outer surface of compactor 48 . It is contemplated that the outer surface of compactor 48 may require periodic replacement and/or that a replaceable sleeve (not shown) may be positioned over compactor 48 to ensure that a desired texture of the deposited material is maintained.
- the blade of cutting mechanism 58 may be pushed radially outward by fluid pressure.
- an internal bladder, piston, or other actuator (not shown) may be selectively filled and drained of pressurized air, oil, or another fluid to force the blade to slide outward (e.g., within side-located guides) or be retracted, as needed. It is contemplated that cutting mechanism 58 could alternatively be located inside of compactor 48 and selectively pushed radially outward toward roller 52 , if desired.
- the blade of cutting mechanism 58 may permanently protrude from roller 52 .
- roller 52 may selectively engage compactor 48 (e.g., via controlled swinging of lever arm 55 ) only when cutting is desired.
- FIG. 3 An exemplary arrangement that provides this confirmation is illustrated in FIG. 3 .
- spool 36 (or an idler or feeder 32 located between spool 36 and compactor 48 —shown only in FIG. 2 ) may be fitted with indexing elements 41 , and sensor 43 placed in close proximity.
- sensor 43 may be configured to generate signals directed to controller 22 that are indicative of reinforcement payout (e.g., of rotation of spool 36 ), and controller 22 may utilize the signals to determine if reinforcement is being pulled from head 16 at a time when no reinforcement should be discharging from outlet 26 .
- controller 22 may respond in any number of different ways. For example, controller 22 may cause movement of head 16 to halt (e.g., via corresponding signals directed to support 14 —referring to FIG. 1 ), generate an error flag, shut down system 10 , cause cutting mechanism 58 to reattempt severing of the reinforcement, and/or implement another corrective action.
- the disclosed systems may be used to additively manufacture composite structures having any desired cross-sectional shape and length.
- the composite structures may include any number of different fibers of the same or different types and of the same or different cross-sectional sizes and shapes, and any number of different matrixes of the same or different makeup. Operation of system 10 will now be described in detail.
- information regarding a desired structure 12 may be loaded into system 10 (e.g., into controller 22 that is responsible for regulating operations of support 14 and/or head 16 ).
- This information may include, among other things, a size (e.g., diameter, wall thickness, length, etc.), a contour (e.g., a trajectory), surface features (e.g., ridge size, location, thickness, length; flange size, location, thickness, length; etc.), connection geometry (e.g., locations and sizes of couplings, tees, splices, etc.), desired weave patterns, weave transition locations, reinforcement information (e.g., types, sizes, shapes, performance characteristics, densities, and trajectories), matrix information (e.g., type, cure requirements, performance characteristics), etc.
- reinforcement information e.g., types, sizes, shapes, performance characteristics, densities, and trajectories
- matrix information e.g., type, cure requirements, performance characteristics
- this information may alternatively or additionally be loaded into system 10 at different times and/or continuously during the manufacturing event, if desired.
- one or more different reinforcements and/or matrix materials may be selectively installed and/or continuously supplied into system 10 .
- individual fibers, tows, and/or ribbons may be passed through head 16 (e.g., through reservoir 24 and/or reservoir 28 , and outlet 26 ).
- the reinforcements may additional be passed between roller 52 and compactor 48 (referring to FIGS. 3 and 4 ) and/or attached to anchor point 18 .
- Installation of the matrix material may include filling matrix reservoir(s) 24 and/or 28 , and/or coupling of an extruder (not shown) to head 16 .
- the component information may then be used to control operation of system 10 .
- particular reinforcements may be pulled and/or pushed along with a particular matrix material from head 16 in desired amounts and/or at desired rates.
- Support 14 may also selectively move head 16 and/or anchor point 18 in a desired manner, such that an axis of the resulting structure 12 follows a desired three-dimensional trajectory.
- Cure enhancer(s) 20 may be selectively activated during material discharge, such that the matrix cures at least enough to maintain a shape of structure 12 .
- the disclosed system may have improved reinforcement wetting and management. Wetting may be improved via precise control over the matrix within a separate and upstream mechanism that is at least partially isolated from (e.g., not axially aligned with) outlet 26 . Reinforcement management may be improved by monitoring reinforcement travel through head 16 (e.g., fiber payout), and selectively responding with corrective actions based on a comparison with travel of head 16 caused by support 14 .
- Wetting may be improved via precise control over the matrix within a separate and upstream mechanism that is at least partially isolated from (e.g., not axially aligned with) outlet 26 .
- Reinforcement management may be improved by monitoring reinforcement travel through head 16 (e.g., fiber payout), and selectively responding with corrective actions based on a comparison with travel of head 16 caused by support 14 .
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Abstract
Description
- This application is a divisional application of U.S. Non-Provisional application Ser. No. 16/531,055 that was filed on Aug. 3, 2019, which is based on and claims the benefit of priority from U.S. Provisional Application No. 62/730,541 that was filed on Sep. 13, 2018, the contents of all of which are expressly incorporated herein by reference.
- The present disclosure relates generally to a manufacturing system and, more particularly, to a system for additively manufacturing composite structures.
- Continuous fiber 3D printing (a.k.a., CF3D®) involves the use of continuous fibers embedded within a matrix discharging from a moveable print head. The matrix can be a traditional thermoplastic (e.g., solid or liquid), a powdered metal, a thermoset resin (e.g., a UV curable, heat curable, and/or two-part resin), or a combination of any of these and other known matrixes. Upon exiting the print head, a head-mounted cure enhancer (e.g., a UV light, an ultrasonic emitter, a heat source, a catalyst supply, etc.) is activated to initiate and/or complete curing of the matrix. This curing occurs almost immediately, allowing for unsupported structures to be fabricated in free space. When fibers, particularly continuous fibers, are embedded within the structure, a strength of the structure may be multiplied beyond the matrix-dependent strength. An example of this technology is disclosed in U.S. Pat. No. 9,511,543, which issued to Tyler on Dec. 6, 2016 (“the '543 patent”).
- Although CF3D® provides for increased strength, compared to manufacturing processes that do not utilize continuous-fiber reinforcement, improvements can be made to the structure and/or operation of existing systems. The disclosed additive manufacturing system is uniquely configured to provide these improvements and/or to address other issues of the prior art.
- In one aspect, the present disclosure is directed to an additive manufacturing system. The additive manufacturing system may include a support, and a print head connected to and moveable by the support. The system may also include an encoder configured to generate a signal indicative of an amount of material passing through the print head, and a controller in communication with the encoder. The controller may be configured to selectively implement a corrective action in response to the signal.
- In another aspect, the present disclosure is directed to another additive manufacturing system. This system may include a support, a print head connected to and moveable by the support, and an encoder configured to generate a signal indicative of an amount of continuous reinforcement passing through the print head. The system may also include a cure enhancer configured to apply a cure energy to a matrix coating the continuous reinforcement, and a controller in communication with the support, the encoder, and the cure enhancer. The controller may be configured to determine an actual amount of the continuous reinforcement passing through the print head, and to make a comparison of the actual amount to a travel distance of the print head. The controller may also be configured to selectively perform at least one of the following when the comparison indicates that the actual amount is less than the travel distance: generating a notification alerting a technician of a potential malfunction, pausing a process of the print head, cancelling the process, or restarting the process.
- In yet another aspect, the present disclosure is directed to a method for additively manufacturing a composite structure. The method may include discharging from a print head a path of composite material, including a continuous reinforcement at least partially coated with a matrix, and determining an amount of the composite material being pulled through the print head during discharging. The method may also include moving the print head during discharging of the composite material and determining a travel distance of the print head. The method may further include selectively implementing a corrective action based on a difference between the amount of the composite material and the travel distance.
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FIG. 1 is an isometric illustration of an exemplary disclosed additive manufacturing system; and -
FIG. 2 is a diagrammatic illustration of an exemplary disclosed print head that may be utilized with the system ofFIG. 1 ; and -
FIGS. 3 and 4 are diagrammatic illustrations of another exemplary disclosed print head that may be utilized with the system ofFIG. 1 . -
FIG. 1 illustrates anexemplary system 10, which may be used to manufacture acomposite structure 12 having any desired cross-sectional shape (e.g., ellipsoidal, polygonal, etc.).System 10 may include at least amoveable support 14 and a print head (“head”) 16.Support 14 may be coupled to and configured to movehead 16. In the disclosed embodiment ofFIG. 1 ,support 14 is a robotic arm capable of movinghead 16 in multiple directions during fabrication ofstructure 12, such that a resulting longitudinal axis ofstructure 12 is three-dimensional. It is contemplated, however, thatsupport 14 could alternatively be a gantry, a hybrid gantry/arm, or another type of movement system that is capable of movinghead 16 in multiple directions during fabrication ofstructure 12. Althoughsupport 14 is shown as being capable of multi-axis movement (e.g., movement about six or more axes), it is contemplated that any other type ofsupport 14 capable of movinghead 16 in the same or in a different manner could also be utilized, if desired. In some embodiments, a drive may mechanically couplehead 16 to support 14 and may include components that cooperate to move and/or supply power or materials tohead 16. -
Head 16 may be configured to receive or otherwise contain a matrix. The matrix may include any type of material (e.g., a liquid resin, such as a zero-volatile organic compound resin; a powdered metal; a solid filament; etc.) that is curable. Exemplary matrixes include thermosets, single- or multi-part epoxy resins, polyester resins, cationic epoxies, acrylated epoxies, urethanes, esters, thermoplastics, photopolymers, polyepoxides, thiols, alkenes, thiol-enes, reversible resins (e.g., Triazolinedione, a covalent-adaptable network, a spatioselective reversible resin, etc.) and more. In one embodiment, the matrix insidehead 16 may be pressurized, for example by an external device (e.g., an extruder or another type of pump—not shown) that is fluidly connected tohead 16 via a corresponding conduit (not shown). In another embodiment, however, the matrix pressure may be generated completely inside ofhead 16 by a similar type of device. In yet other embodiments, the matrix may be gravity-fed through and/or mixed withinhead 16. In some instances, the matrix insidehead 16 may need to be kept cool and/or dark to inhibit premature curing; while in other instances, the matrix may need to be kept warm for similar reasons. In either situation,head 16 may be specially configured (e.g., insulated, temperature-controlled, shielded, etc.) to provide for these needs. - The matrix may be used to coat, encase, or otherwise at least partially surround or saturate (e.g., wet) any number of continuous reinforcements (e.g., separate fibers, tows, rovings, ribbons, and/or sheets of material) and, together with the reinforcements, make up at least a portion (e.g., a wall) of
composite structure 12. The reinforcements may be stored within (e.g., on separate internal spools) or otherwise passed through head 16 (e.g., fed from one or more external spools). When multiple reinforcements are simultaneously used, the reinforcements may be of the same type and have the same diameter and cross-sectional shape (e.g., circular, square, flat, hollow, solid, etc.), or of a different type with different diameters and/or cross-sectional shapes. The reinforcements may include, for example, carbon fibers, vegetable fibers, wood fibers, mineral fibers, glass fibers, metallic wires, optical tubes, etc. It should be noted that the term “reinforcement” is meant to encompass both structural and non-structural types of continuous materials that can be at least partially encased in the matrix discharging fromhead 16. - The reinforcements may be exposed to (e.g., coated with) the matrix while the reinforcements are inside
head 16, while the reinforcements are being passed to head 16 (e.g., as a prepreg material), and/or while the reinforcements are discharging fromhead 16, as desired. The matrix, dry reinforcements, and/or reinforcements that are already exposed to the matrix (e.g., wetted reinforcements) may be transported intohead 16 in any manner apparent to one skilled in the art. - The matrix and reinforcement may be discharged from
head 16 via at least two different modes of operation. In a first mode of operation, the matrix and reinforcement are extruded (e.g., pushed under pressure and/or mechanical force) fromhead 16, ashead 16 is moved bysupport 14 to create the 3-dimensional shape ofstructure 12. In a second mode of operation, at least the reinforcement is pulled fromhead 16, such that a tensile stress is created in the reinforcement during discharge. In this mode of operation, the matrix may cling to the reinforcement and thereby also be pulled fromhead 16 along with the reinforcement, and/or the matrix may be discharged fromhead 16 under pressure along with the pulled reinforcement. In the second mode of operation, where the matrix material is being pulled fromhead 16 with the reinforcement, the resulting tension in the reinforcement may increase a strength of structure 12 (e.g., by aligning the reinforcements, inhibiting buckling, equally distributing loads, etc.), while also allowing for a greater length ofunsupported structure 12 to have a straighter trajectory (e.g., by creating moments that oppose gravity). - The reinforcement may be pulled from
head 16 as a result ofhead 16 moving away from an anchor point 18. In particular, at the start of structure-formation, a length of matrix-impregnated reinforcement may be pulled and/or pushed fromhead 16, deposited onto a stationary or moveable anchor point 18, and cured, such that the discharged material adheres to anchor point 18. Thereafter,head 16 may be moved away from anchor point 18, and the relative movement may cause additional reinforcement to be pulled fromhead 16. It should be noted that the movement of the reinforcement throughhead 16 could be assisted (e.g., via internal feed mechanisms), if desired. However, the discharge rate of the reinforcement fromhead 16 may primarily be the result of relative movement betweenhead 16 and anchor point 18, such that tension is created within the reinforcement. - Any number of reinforcements (represented as “R”) may be passed axially through
head 16 and be discharged together with at least a partial coating of matrix (matrix represented as “M” inFIG. 2 ). At discharge (or shortly thereafter), one or more cure enhancers (e.g., one or more light sources, ultrasonic emitters, lasers, heaters, catalyst dispensers, microwave generators, etc.) 20 may expose the matrix coating to a cure energy (e.g., light energy, electromagnetic radiation, vibrations, heat, a chemical catalyst or hardener, or other form of actively-applied energy). The cure energy may trigger a chemical reaction, increase a rate of chemical reaction already occurring within the matrix, sinter the material, harden the material, or otherwise cause the material to cure as it discharges fromhead 16. - A
controller 22 may be provided and communicatively coupled withsupport 14,head 16, and/or any number and type ofcure enhancers 20.Controller 22 may embody a single processor or multiple processors that include a means for controlling an operation ofsystem 10.Controller 22 may include one or more general- or special-purpose processors or microprocessors.Controller 22 may further include or be associated with a memory for storing data such as, for example, design limits, performance characteristics, operational instructions, matrix characteristics, reinforcement characteristics, characteristics ofstructure 12, and corresponding parameters of each component ofsystem 10. Various other known circuits may be associated withcontroller 22, including power supply circuitry, signal-conditioning circuitry, solenoid/motor driver circuitry, communication circuitry, and other appropriate circuitry. Moreover,controller 22 may be capable of communicating with other components ofsystem 10 via wired and/or wireless transmission. - One or more maps may be stored in the memory of
controller 22 and used during fabrication ofstructure 12. Each of these maps may include a collection of data in the form of models, lookup tables, graphs, and/or equations. In the disclosed embodiment, the maps are used bycontroller 22 to determine desired characteristics ofcure enhancers 20, the associated matrix, and/or the associated reinforcements at different locations withinstructure 12. The characteristics may include, among others, a type, quantity, and/or configuration of reinforcement and/or matrix to be discharged at a particular location withinstructure 12, and/or an amount, intensity, shape, and/or location of desired curing.Controller 22 may then correlate operation of support 14 (e.g., the location and/or orientation of head 16) and/or the discharge of material from head 16 (a type of material, desired performance of the material, cross-linking requirements of the material, a discharge rate, etc.) with the operation ofcure enhancers 20, such thatstructure 12 is produced in a desired manner. - A cross-section of an
exemplary head 16 is disclosed in detail inFIG. 2 . As shown in this figure,head 16 may include, among other things, amatrix reservoir 24 and an outlet (e.g., a nozzle) 26 removably connected tomatrix reservoir 24. In this example,outlet 26 is a multi-channel nozzle configured to discharge composite material having a generally rectangular, flat, or ribbon-like cross-section. The configuration ofhead 16, however, may allowoutlet 26 to be swapped out for another outlet 26 (not shown) that discharges composite material having a different shape (e.g., a circular cross-section, a tubular cross-section, etc.). Fibers, tubes, and/or other reinforcements may pass throughmatrix reservoir 24 and be wetted (e.g., at least partially coated and/or fully saturated) with matrix material prior to discharge. - It has been found that, in some applications, more time may be required for the matrix to fully saturate and/or encapsulate the associated reinforcement than is possible during travel of the reinforcement through
matrix reservoir 24. In addition, it can be difficult to ensure that gravity does not cause the matrix to leak fromreservoir 24 throughoutlet 26 in an uncontrolled manner. In these and other applications, the reinforcement may be selectively wetted or otherwise coated or saturated with the matrix at a location upstream ofreservoir 24.Reservoir 24 may still be used in these applications, left empty, or completely omitted, as desired. -
FIG. 2 illustrates a wetting mechanism (“mechanism”) 27, which can be used together with or in place ofreservoir 24.Mechanism 27 may be configured to receive reinforcement (e.g., a dry or pre-impregnated reinforcement from an internal and/or external spool 36) and matrix (e.g., via an inlet 30), and to discharge a matrix-wetted reinforcement, which can then be discharged byhead 16 in the manner described above.Mechanism 27 may be a relatively closed and higher-pressure device or a relatively open and lower-pressure mechanism, as desired. For example, the supplied reinforcement may be routed through a bath of liquid matrix that is contained withinmechanism 27. -
Mechanism 27 may be an assembly of components that cooperate to saturate, coat, encapsulate, or at least partially wet the reinforcement passing therethrough with a desired amount of matrix, without significantly increasing tension within the reinforcement. These components may include, among other things, amatrix reservoir 28 that is in fluid communication withinlet 30, afeeder 32 that is configured to direct reinforcement intomatrix reservoir 28, and aregulator 34 located at an exit ofmatrix reservoir 28 that is configured to limit an amount of matrix allowed to leavemechanism 27 with the reinforcement. -
Matrix reservoir 28 may function similar tomatrix reservoir 24 described above, but is located in substantial isolation from head 16 (e.g., isolated from outlet 26). That is,matrix reservoir 28 may not be internal to head 16, so as to reduce a likelihood of matrix material passing undetected and/or in undesired amounts throughoutlet 26. In the embodiment where theinternal matrix reservoir 24 ofhead 16 is eliminated, theexternal wetting mechanism 27 may feed directly into a stand-alone outlet 26. In embodiments wherematrix reservoir 24 is retained,matrix reservoir 24 may primarily be used to collect excess resin that drips from the reinforcement during passage throughhead 16. It is contemplated thatmatrix reservoir 24 could be used to apply additional matrix and/or a different matrix (e.g., a catalyst or outer coating) to the already wetted reinforcement. It is further contemplated thatmatrix reservoir 28 could be internal to head 16 (e.g., within the same housing), if desired. - It should be noted that
matrix reservoir 28 may be substantially sealed (e.g., via one or more o-rings, gaskets, etc. —not shown), such thatmatrix reservoir 28 may be tilted or even completely inverted, without significant matrix leakage. It should also be noted that, althoughinlet 30 is shown as being located at a lowest gravitational point of matrix reservoir 28 (e.g., to allow for filling and draining via the same port), this location could be changed. Likewise, although a reinforcement inlet and a reinforcement exit are both shown as being located at higher gravitational points ofmatrix reservoir 28, these locations could also change. The current configuration allows for gravity to pull excess matrix from the exiting reinforcement back intomatrix reservoir 28. -
Matrix reservoir 28 may be manually and/or automatically filled with matrix. For example, when a periodic inspection ofmatrix reservoir 28 reveals a low-level status, additional matrix may be directed through inlet 30 (e.g., via opening of a valve and/or activation of a pump—both not shown). Alternatively, a sensor (e.g., a resistive level or acoustic sensor—not shown) may be used to automatically direct additional matrix throughinlet 30 in response to a detected low-level status. In another embodiment, matrix may be directed throughinlet 30 based on an assumed consumption rate, in addition to or instead of the other fill strategies disclosed above. -
Feeder 32 may be located between a supply of reinforcement (e.g., spool) 36 andmatrix reservoir 28 and configured to reduce tension within the reinforcement throughoutlet 26 by selectively pulling reinforcement fromspool 36. In particular, whenspool 36 is full of reinforcement, it may have a larger mass and associated inertia. If the reinforcement were to be pulled fromspool 36 throughoutlet 26 simply by movement ofhead 16 away from anchor point 18, as described above, enough tension could be created within the reinforcement to disrupt anchor point 18 under some conditions, break the reinforcement, and/or cause uneven printing withinstructure 12. Accordingly,feeder 32 may selectively pull the reinforcement from spool 36 (and feed the reinforcement intomatrix reservoir 28, in some applications) at rate that is about equal to a rate at which the fiber is discharging throughoutlet 26.Feeder 32 may include, among other things, at least one roller (e.g., tworollers rollers feeder 32, and/or be powered to rotate (e.g., by a motor—not shown). - In one example,
feeder 32 may alternatively or additionally function as an encoder, monitoring usage of reinforcement byhead 16 and/or an amount of reinforcement remaining onspool 36. In this example, at least one ofrollers FIG. 3 ) 41 that are detected by an associated sensor (e.g., an electronic eye, a camera, a hall-effect sensor, etc. —shown only inFIG. 3 ) 43. Based on a sensed number of revolutions of roller(s) 38, 40, an amount of reinforcement passing throughfeeder 32 may be determined. It should be noted that, althoughfeeder 32 is shown as being located upstream ofmatrix reservoir 28, feeder 32 (or only indexing elements 41 and associated sensor 43) could alternatively be located downstream, if desired. -
Matrix regulator 34 may be located at a reinforcement exit point ofmechanism 27 and configured to mechanically remove excess matrix from the reinforcement passing therethrough. In the disclosed embodiment,matrix regulator 34 includes one or more wipers (e.g., two opposing wipers) 44 that engage the wetted reinforcement.Wipers 44 may be biased towards each other (e.g., via coil springs 45) to sandwich and/or flexible to deform around the reinforcement.Matrix reservoir 28 may be generally open to a lower side ofwipers 44, such that removed matrix may be pulled by gravity back intoreservoir 28 and reused. It should be noted thatwipers 44, in addition to regulating an amount of matrix left clinging to the reinforcement, may also be used to induce a desired level of tension within the reinforcement, in some applications. For example, the spring rate of coil springs 45, the flexibility ofwipers 44, and/or an engagement angle ofwipers 44 may be selectively and/or actively adjusted to thereby adjust the tension level. - Any number of pulleys or other
similar routing devices 46 may be arranged to help route the reinforcement along a desired path through wettingmechanism 27. For example, one ormore routing devices 46 may be at least partially submerged insidematrix reservoir 28 at a location betweenfeeder 32 andregulator 34. In another example, one ormore routing devices 46 may be located outside ofmatrix reservoir 28 at locations betweenregulator 34 and outlet 26 (e.g., abovematrix reservoir 24 and in axial alignment with outlet 26).Routing devices 46 may be driven or spin freely, as desired. - It should be noted that, although
mechanism 27 is shown as being mounted toprint head 16, which is in turn mounted to support 14, the reverse could be true. In addition,mechanism 27 could be mounted to support 14 completely independent ofhead 16, if desired. Likewise, instead of being located axiallyadjacent head 16,mechanism 27 could alternatively be located axially in line with head 16 (e.g., axially aligned with outlet 26). Other configurations may also be possible. - It is contemplated that
feeder 32, when functioning as an encoder in the manner described above, may be utilized to determine whenprint head 16 and/or the manufacturing process has malfunctioned. Malfunctions experienced byprint head 16 can include untacking of a path of discharged composite material (e.g., during cornering) and breaking of the reinforcement within the path. These malfunctions may be determined, for example, via a comparison of an actual amount (e.g., a length) of reinforcement passing throughfeeder 32 with an expected amount. In particular, when the actual amount is less than the expected amount (e.g., by at least a threshold margin),controller 22 may determine that either the reinforcement has become untacked from a remaining portion ofstructure 12 and is being towed through a shorter arc cutting across a desired corner or that the reinforcement has completely broken and is no longer being pulled out throughoutlet 26. - The expected amount of reinforcement passing through
feeder 32 may be determined in any number of ways. For example, the expected amount may be determined based on progress ofprint head 16 through a tool path sequence and a known length of the sequence. In another example, the expected amount may be determined based on monitored movement ofprint head 16 away from anchor point 18. Other methods may also be utilized. - Once
controller 22 determines that a malfunction has occurred, several actions may be responsively taken. For example,controller 22 may generate an alert indicating that the print process may have failed and that a technician should check the process. Additionally or alternatively,controller 22 may pause the process and await a confirmation from the technician that the process should continue. In some situations,controller 22 may cancel the process completely and, in some embodiments, restart the process. - It is contemplated that any of these above described responses may be selectively implemented based on a severity of the malfunction. For example, if the difference between the actual and expected reinforcement amounts is below a first threshold (e.g., indicating only that a corner may have been cut or cut by only a small amount), only the notification may be generated. While, if the difference is greater than the first threshold (e.g., indicating that the reinforcement may have broken),
controller 22 may pause and/or cancel the process. Other responses may also be possible. -
FIGS. 3 and 4 illustrate anotherexemplary head 16 that may be used with one or both ofmatrix reservoir 24 and mechanism 27 (referring toFIG. 2 ). In this example,outlet 26 may not resemble the nozzle shown inFIGS. 1 and 2 . Instead,outlet 26 ofFIGS. 3 and 4 may be associated with a trailing compactor 48 (i.e., trailing relative to a normal travel direction ofhead 16, as represented by an arrow 50) that functions as a tool-center-point ofhead 16. -
Compactor 48 may be used to apply pressure to material discharged fromhead 16 viaoutlet 26. In addition, in some instances,compactor 48 may be driven to propel head 16 (e.g., via a motor 51) and/or selectively paired with anotherroller 52 to pull the reinforcement throughoutlet 26. In this way, less (if any) tension may be generated within the reinforcement outside ofhead 16 due to movement ofhead 16 away from anchor point 18 (referring toFIG. 1 ). This may allow for the residual level of tension within each individual reinforcement to be more accurately controlled. - In one example,
roller 52 may be biased toward compactor 48 (e.g., via acoil spring 54 and a lever arm 55), such that the reinforcement(s) are sandwiched therebetween. Lever arm 55 may extend betweencompactor 48 androller 52, withcoil spring 45 being located at an endadjacent compactor 48.Roller 52 may be an idler-type of roller or, alternatively, may itself be driven (e.g., in addition tocompactor 48 or instead ofcompactor 48 being driven) to rotate in a direction opposite that ofcompactor 48. For example,roller 52 may be operatively driven bymotor 51 via a gear train 56 (shown only inFIG. 4 ), whilecompactor 48 is directly driven bymotor 51. It is contemplated that a clutching mechanism (not shown) could be associated with gear train 56, such thatroller 52 may only be selectively driven during driving ofcompactor 48 and/or so thatcompactor 48 may be driven at least partially independent of the rotation ofroller 52. - A
common mount 57 may be provided forcompactor 48,roller 52,motor 51, and/or gear train 56.Mount 57 may include, among other things, protruding arms 57 a that extend to opposing ends ofcompactor 48 androller 52, one of arms 57 a being located between one of the ends andmotor 51 and gear train 56. Aguide 59 may be connected to mount 57 at a location upstream ofcompactor 48.Guide 59 may have one or more guiding features (e.g., grooves, channels, ribs, dividers, etc.) 61 that help to guide (e.g., align, separate, converge, shape, etc.) the reinforcements tocompactor 48. - As shown in
FIGS. 3 and 4 , acutting mechanism 58 may be integrated intoroller 52. In these examples, cuttingmechanism 58 embodies a blade that is normally recessed withinroller 52, such that the blade does not engage the reinforcements during normal discharge. At select timings, the blade may be pushed radially outward to protrude through or from an outer surface ofroller 52, thereby allowing the rotation ofroller 52 to force the blade through the reinforcements and against a compliant outer surface ofcompactor 48. It is contemplated that the outer surface ofcompactor 48 may require periodic replacement and/or that a replaceable sleeve (not shown) may be positioned overcompactor 48 to ensure that a desired texture of the deposited material is maintained. - In one example, the blade of cutting
mechanism 58 may be pushed radially outward by fluid pressure. For example, an internal bladder, piston, or other actuator (not shown) may be selectively filled and drained of pressurized air, oil, or another fluid to force the blade to slide outward (e.g., within side-located guides) or be retracted, as needed. It is contemplated that cuttingmechanism 58 could alternatively be located inside ofcompactor 48 and selectively pushed radially outward towardroller 52, if desired. - In another example, the blade of cutting
mechanism 58 may permanently protrude fromroller 52. In this example,roller 52 may selectively engage compactor 48 (e.g., via controlled swinging of lever arm 55) only when cutting is desired. - It can be important, in some applications, to ensure that severing of the reinforcement by cutting
mechanism 58 has completed successfully, before subsequent operations are initiated. An exemplary arrangement that provides this confirmation is illustrated inFIG. 3 . As seen in this figure, spool 36 (or an idler orfeeder 32 located betweenspool 36 andcompactor 48—shown only inFIG. 2 ) may be fitted with indexing elements 41, and sensor 43 placed in close proximity. At this location, sensor 43 may be configured to generate signals directed tocontroller 22 that are indicative of reinforcement payout (e.g., of rotation of spool 36), andcontroller 22 may utilize the signals to determine if reinforcement is being pulled fromhead 16 at a time when no reinforcement should be discharging fromoutlet 26. For example, after severing of the reinforcement by cuttingmechanism 58 and during movement and/or restart of a new track of material, the reinforcement should not be paying out fromspool 36 or discharging fromoutlet 26. However, if the reinforcement was not successfully severed andhead 16 attempts to move away from the severing location, the remaining attachment to structure 12 might cause the reinforcement to be inadvertently pulled fromhead 16. Sensor 43 may generate signals indicative of this undesired payout, andcontroller 22 may respond in any number of different ways. For example,controller 22 may cause movement ofhead 16 to halt (e.g., via corresponding signals directed to support 14—referring toFIG. 1 ), generate an error flag, shut downsystem 10,cause cutting mechanism 58 to reattempt severing of the reinforcement, and/or implement another corrective action. - The disclosed systems may be used to additively manufacture composite structures having any desired cross-sectional shape and length. The composite structures may include any number of different fibers of the same or different types and of the same or different cross-sectional sizes and shapes, and any number of different matrixes of the same or different makeup. Operation of
system 10 will now be described in detail. - At a start of a manufacturing event, information regarding a desired
structure 12 may be loaded into system 10 (e.g., intocontroller 22 that is responsible for regulating operations ofsupport 14 and/or head 16). This information may include, among other things, a size (e.g., diameter, wall thickness, length, etc.), a contour (e.g., a trajectory), surface features (e.g., ridge size, location, thickness, length; flange size, location, thickness, length; etc.), connection geometry (e.g., locations and sizes of couplings, tees, splices, etc.), desired weave patterns, weave transition locations, reinforcement information (e.g., types, sizes, shapes, performance characteristics, densities, and trajectories), matrix information (e.g., type, cure requirements, performance characteristics), etc. It should be noted that this information may alternatively or additionally be loaded intosystem 10 at different times and/or continuously during the manufacturing event, if desired. Based on the component information, one or more different reinforcements and/or matrix materials may be selectively installed and/or continuously supplied intosystem 10. - To install the reinforcements, individual fibers, tows, and/or ribbons may be passed through head 16 (e.g., through
reservoir 24 and/orreservoir 28, and outlet 26). In some embodiments, the reinforcements may additional be passed betweenroller 52 and compactor 48 (referring toFIGS. 3 and 4 ) and/or attached to anchor point 18. Installation of the matrix material may include filling matrix reservoir(s) 24 and/or 28, and/or coupling of an extruder (not shown) tohead 16. - The component information may then be used to control operation of
system 10. For example, particular reinforcements may be pulled and/or pushed along with a particular matrix material fromhead 16 in desired amounts and/or at desired rates.Support 14 may also selectively movehead 16 and/or anchor point 18 in a desired manner, such that an axis of the resultingstructure 12 follows a desired three-dimensional trajectory. Cure enhancer(s) 20 may be selectively activated during material discharge, such that the matrix cures at least enough to maintain a shape ofstructure 12. Oncestructure 12 has grown to a desired length,structure 12 may be severed fromsystem 10 via cuttingmechanism 58. - The disclosed system may have improved reinforcement wetting and management. Wetting may be improved via precise control over the matrix within a separate and upstream mechanism that is at least partially isolated from (e.g., not axially aligned with)
outlet 26. Reinforcement management may be improved by monitoring reinforcement travel through head 16 (e.g., fiber payout), and selectively responding with corrective actions based on a comparison with travel ofhead 16 caused bysupport 14. - It will be apparent to those skilled in the art that various modifications and variations can be made to the disclosed system. Other embodiments will be apparent to those skilled in the art from consideration of the specification and practice of the disclosed system. It is intended that the specification and examples be considered as exemplary only, with a true scope being indicated by the following claims and their equivalents.
Claims (20)
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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US20200238603A1 (en) * | 2019-01-25 | 2020-07-30 | Continuous Composites Inc. | System for additively manufacturing composite structure |
US11465343B2 (en) | 2019-12-17 | 2022-10-11 | Saudi Arabian Oil Company | Manufacturing continuous fiber reinforced thermoplastic components with layers of unidirectional tape |
US11794402B2 (en) | 2019-12-18 | 2023-10-24 | Saudi Arabian Oil Company | Reducing manufacturing defects of a wound filament product |
CN111688193B (en) * | 2020-06-13 | 2021-05-14 | 西安交通大学 | Direct-writing 3D printing device and method for controllable offset continuous fiber reinforced composite material |
US11926099B2 (en) * | 2021-04-27 | 2024-03-12 | Continuous Composites Inc. | Additive manufacturing system |
DE102021114572B4 (en) | 2021-06-07 | 2024-03-28 | Olbrich Gmbh | Process for the production of a multi-layer PVC semi-finished product and a corresponding device |
US11982397B2 (en) | 2021-10-26 | 2024-05-14 | Saudi Arabian Oil Company | Resin rich polyurea-based integrated external layer for reinforced thermosetting resin piping protection |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6022207A (en) * | 1998-01-26 | 2000-02-08 | Stratasys, Inc. | Rapid prototyping system with filament supply spool monitoring |
US20140265040A1 (en) * | 2013-03-15 | 2014-09-18 | Stratasys, Inc. | Additive manufacturing system and method for printing three-dimensional parts using velocimetry |
US20150165677A1 (en) * | 2013-12-13 | 2015-06-18 | Xyzprinting, Inc. | Printing head module |
US9126365B1 (en) * | 2013-03-22 | 2015-09-08 | Markforged, Inc. | Methods for composite filament fabrication in three dimensional printing |
US20170001384A1 (en) * | 2015-06-30 | 2017-01-05 | Airbus Defence and Space GmbH | Devices and methods for depositing reinforcing fiber tapes and detecting laying errors |
US20170028637A1 (en) * | 2015-07-31 | 2017-02-02 | The Boeing Company | Systems and methods for additively manufacturing composite parts |
US20170129171A1 (en) * | 2015-11-09 | 2017-05-11 | U.S.A. As Represented By The Administrator Of The National Aeronautics And Space Administration | Devices and Methods for Additive Manufacturing Using Flexible Filaments |
US20170129178A1 (en) * | 2015-11-09 | 2017-05-11 | Nike, Inc. | Selective Attachment of a Yarn Structure |
US20200019141A1 (en) * | 2018-07-16 | 2020-01-16 | The Boeing Company | Method and system for verification of tow end placement |
US20200086574A1 (en) * | 2018-09-13 | 2020-03-19 | Continouos Composites Inc. | System for additively manufacturing composite structures |
Family Cites Families (182)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3286305A (en) | 1964-09-03 | 1966-11-22 | Rexall Drug Chemical | Apparatus for continuous manufacture of hollow articles |
BE791272A (en) | 1971-11-13 | 1973-03-01 | Castro Nunez Elem Huecos | CONTINUOUS MANUFACTURING MACHINE FOR HOLLOW ELEMENTS |
US3984271A (en) | 1973-06-25 | 1976-10-05 | Owens-Corning Fiberglas Corporation | Method of manufacturing large diameter tubular structures |
US3993726A (en) | 1974-01-16 | 1976-11-23 | Hercules Incorporated | Methods of making continuous length reinforced plastic articles |
US4557783A (en) | 1983-12-05 | 1985-12-10 | Cincinnati Milacron Inc. | Composite tape laying machine and method |
DE3424269C2 (en) | 1984-06-30 | 1994-01-27 | Krupp Ag | Device for producing reinforced profiles and reinforced hoses |
US4643940A (en) | 1984-08-06 | 1987-02-17 | The Dow Chemical Company | Low density fiber-reinforced plastic composites |
US4851065A (en) | 1986-01-17 | 1989-07-25 | Tyee Aircraft, Inc. | Construction of hollow, continuously wound filament load-bearing structure |
DE3619981A1 (en) | 1986-06-13 | 1987-12-17 | Freudenberg Carl Fa | METHOD AND DEVICE FOR PRODUCING A THREAD-REINFORCED HOSE FROM POLYMER MATERIAL |
US5037691A (en) | 1986-09-15 | 1991-08-06 | Compositech, Ltd. | Reinforced plastic laminates for use in the production of printed circuit boards and process for making such laminates and resulting products |
US4943338A (en) * | 1988-09-26 | 1990-07-24 | Cincinnati Milacron Inc. | Multi-tow fiber placement machine with full band width clamp, cut, and restart capability |
DE3835575A1 (en) | 1988-10-19 | 1990-04-26 | Bayer Ag | COMPOSITES |
US5121329A (en) | 1989-10-30 | 1992-06-09 | Stratasys, Inc. | Apparatus and method for creating three-dimensional objects |
DE4102257A1 (en) | 1991-01-23 | 1992-07-30 | Artos Med Produkte | Appts. for mfg. reinforced components in laser-cured polymer - has laser-curable polymer in bath, laser directed at polymer surface where fibres pass through polymer and are guided relative to laser beam angle |
US5296335A (en) | 1993-02-22 | 1994-03-22 | E-Systems, Inc. | Method for manufacturing fiber-reinforced parts utilizing stereolithography tooling |
US5746967A (en) | 1995-06-26 | 1998-05-05 | Fox Lite, Inc. | Method of curing thermoset resin with visible light |
US6305769B1 (en) * | 1995-09-27 | 2001-10-23 | 3D Systems, Inc. | Selective deposition modeling system and method |
US5700347A (en) * | 1996-01-11 | 1997-12-23 | The Boeing Company | Thermoplastic multi-tape application head |
US6144008A (en) | 1996-11-22 | 2000-11-07 | Rabinovich; Joshua E. | Rapid manufacturing system for metal, metal matrix composite materials and ceramics |
US5866058A (en) | 1997-05-29 | 1999-02-02 | Stratasys Inc. | Method for rapid prototyping of solid models |
IL121458A0 (en) * | 1997-08-03 | 1998-02-08 | Lipsker Daniel | Rapid prototyping |
US5936861A (en) | 1997-08-15 | 1999-08-10 | Nanotek Instruments, Inc. | Apparatus and process for producing fiber reinforced composite objects |
US6261675B1 (en) | 1999-03-23 | 2001-07-17 | Hexcel Corporation | Core-crush resistant fabric and prepreg for fiber reinforced composite sandwich structures |
EP1226019B1 (en) | 1999-11-05 | 2004-03-03 | Z Corporation | Methods of three-dimensional printing |
US6501554B1 (en) | 2000-06-20 | 2002-12-31 | Ppt Vision, Inc. | 3D scanner and method for measuring heights and angles of manufactured parts |
US6799081B1 (en) | 2000-11-15 | 2004-09-28 | Mcdonnell Douglas Corporation | Fiber placement and fiber steering systems and corresponding software for composite structures |
US6471800B2 (en) | 2000-11-29 | 2002-10-29 | Nanotek Instruments, Inc. | Layer-additive method and apparatus for freeform fabrication of 3-D objects |
US6797220B2 (en) | 2000-12-04 | 2004-09-28 | Advanced Ceramics Research, Inc. | Methods for preparation of three-dimensional bodies |
US6803003B2 (en) | 2000-12-04 | 2004-10-12 | Advanced Ceramics Research, Inc. | Compositions and methods for preparing multiple-component composite materials |
US20020113331A1 (en) | 2000-12-20 | 2002-08-22 | Tan Zhang | Freeform fabrication method using extrusion of non-cross-linking reactive prepolymers |
US6899777B2 (en) | 2001-01-02 | 2005-05-31 | Advanced Ceramics Research, Inc. | Continuous fiber reinforced composites and methods, apparatuses, and compositions for making the same |
US20030044539A1 (en) | 2001-02-06 | 2003-03-06 | Oswald Robert S. | Process for producing photovoltaic devices |
US7029621B2 (en) | 2001-03-01 | 2006-04-18 | Schroeder Ernest C | Apparatus and method of fabricating fiber reinforced plastic parts |
US6767619B2 (en) | 2001-05-17 | 2004-07-27 | Charles R. Owens | Preform for manufacturing a material having a plurality of voids and method of making the same |
US6866807B2 (en) | 2001-09-21 | 2005-03-15 | Stratasys, Inc. | High-precision modeling filament |
CA2369710C (en) | 2002-01-30 | 2006-09-19 | Anup Basu | Method and apparatus for high resolution 3d scanning of objects having voids |
US6934600B2 (en) | 2002-03-14 | 2005-08-23 | Auburn University | Nanotube fiber reinforced composite materials and method of producing fiber reinforced composites |
US7229586B2 (en) | 2002-05-07 | 2007-06-12 | Dunlap Earl N | Process for tempering rapid prototype parts |
US7572403B2 (en) | 2003-09-04 | 2009-08-11 | Peihua Gu | Multisource and multimaterial freeform fabrication |
US7293590B2 (en) | 2003-09-22 | 2007-11-13 | Adc Acquisition Company | Multiple tape laying apparatus and method |
US7063118B2 (en) | 2003-11-20 | 2006-06-20 | Adc Acquisition Company | Composite tape laying apparatus and method |
US7039485B2 (en) | 2004-03-12 | 2006-05-02 | The Boeing Company | Systems and methods enabling automated return to and/or repair of defects with a material placement machine |
US7824001B2 (en) | 2004-09-21 | 2010-11-02 | Z Corporation | Apparatus and methods for servicing 3D printers |
US7681615B2 (en) * | 2005-08-04 | 2010-03-23 | The Boeing Company | Tow width adaptable placement head device and method |
US7680555B2 (en) | 2006-04-03 | 2010-03-16 | Stratasys, Inc. | Auto tip calibration in an extrusion apparatus |
US7555404B2 (en) | 2007-08-09 | 2009-06-30 | The Boeing Company | Methods and systems for automated ply boundary and orientation inspection |
US8151854B2 (en) | 2007-10-16 | 2012-04-10 | Ingersoll Machine Tools, Inc. | Fiber placement machine platform system having interchangeable head and creel assemblies |
DE102008022946B4 (en) | 2008-05-09 | 2014-02-13 | Fit Fruth Innovative Technologien Gmbh | Apparatus and method for applying powders or pastes |
KR100995983B1 (en) | 2008-07-04 | 2010-11-23 | 재단법인서울대학교산학협력재단 | Cross printing method and apparatus of circuit board |
EP2473333A4 (en) | 2009-09-04 | 2017-09-13 | Covestro LLC | Automated processes for the production of polyurethane wind turbine blades |
US8221669B2 (en) | 2009-09-30 | 2012-07-17 | Stratasys, Inc. | Method for building three-dimensional models in extrusion-based digital manufacturing systems using ribbon filaments |
DE102009052835A1 (en) | 2009-11-13 | 2011-05-19 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Method for producing a component from a fiber-reinforced material |
US9086033B2 (en) | 2010-09-13 | 2015-07-21 | Experimental Propulsion Lab, Llc | Additive manufactured propulsion system |
US8920697B2 (en) | 2010-09-17 | 2014-12-30 | Stratasys, Inc. | Method for building three-dimensional objects in extrusion-based additive manufacturing systems using core-shell consumable filaments |
US8282758B2 (en) * | 2010-09-24 | 2012-10-09 | General Electric Company | System and method for the automated delivery and layup of resin infused fibers |
KR101172859B1 (en) | 2010-10-04 | 2012-08-09 | 서울대학교산학협력단 | Ultra precision machining apparatus using nano-scale three dimensional printing and method using the same |
DE102011109369A1 (en) | 2011-08-04 | 2013-02-07 | Arburg Gmbh + Co Kg | Method and device for producing a three-dimensional object with fiber feed |
US9457521B2 (en) | 2011-09-01 | 2016-10-04 | The Boeing Company | Method, apparatus and material mixture for direct digital manufacturing of fiber reinforced parts |
PL2589481T3 (en) | 2011-11-04 | 2016-06-30 | Ralph Peter Hegler | Device for continuously manufacturing a composite pipe with connection sleeve |
US20130164498A1 (en) | 2011-12-21 | 2013-06-27 | Adc Acquisition Company | Thermoplastic composite prepreg for automated fiber placement |
US10518490B2 (en) | 2013-03-14 | 2019-12-31 | Board Of Regents, The University Of Texas System | Methods and systems for embedding filaments in 3D structures, structural components, and structural electronic, electromagnetic and electromechanical components/devices |
US9884318B2 (en) | 2012-02-10 | 2018-02-06 | Adam Perry Tow | Multi-axis, multi-purpose robotics automation and quality adaptive additive manufacturing |
US8919410B2 (en) | 2012-03-08 | 2014-12-30 | Fives Machining Systems, Inc. | Small flat composite placement system |
US9764378B2 (en) | 2012-04-04 | 2017-09-19 | Massachusetts Institute Of Technology | Methods and apparatus for actuated fabricator |
DE102012007439A1 (en) | 2012-04-13 | 2013-10-17 | Compositence Gmbh | Laying head and apparatus and method for building a three-dimensional preform for a component made of a fiber composite material |
GB201210851D0 (en) | 2012-06-19 | 2012-08-01 | Eads Uk Ltd | Extrusion-based additive manufacturing system |
GB201210850D0 (en) | 2012-06-19 | 2012-08-01 | Eads Uk Ltd | Thermoplastic polymer powder |
EP2874791B2 (en) | 2012-07-20 | 2022-08-17 | MAG Aerospace Industries, LLC | Composite waste and water transport elements and methods of manufacture for use on aircraft |
US9172829B2 (en) | 2012-07-31 | 2015-10-27 | Makerbot Industries, Llc | Three-dimensional printer with laser line scanner |
US8962717B2 (en) | 2012-08-20 | 2015-02-24 | Basf Se | Long-fiber-reinforced flame-retardant polyesters |
US9511543B2 (en) | 2012-08-29 | 2016-12-06 | Cc3D Llc | Method and apparatus for continuous composite three-dimensional printing |
US9233506B2 (en) | 2012-12-07 | 2016-01-12 | Stratasys, Inc. | Liquefier assembly for use in additive manufacturing system |
US20140232035A1 (en) | 2013-02-19 | 2014-08-21 | Hemant Bheda | Reinforced fused-deposition modeling |
US9381702B2 (en) | 2013-03-15 | 2016-07-05 | Seriforge Inc. | Composite preforms including three-dimensional interconnections |
US11237542B2 (en) | 2013-03-22 | 2022-02-01 | Markforged, Inc. | Composite filament 3D printing using complementary reinforcement formations |
US9156205B2 (en) | 2013-03-22 | 2015-10-13 | Markforged, Inc. | Three dimensional printer with composite filament fabrication |
US9539762B2 (en) | 2013-03-22 | 2017-01-10 | Markforged, Inc. | 3D printing with kinematic coupling |
US9815268B2 (en) | 2013-03-22 | 2017-11-14 | Markforged, Inc. | Multiaxis fiber reinforcement for 3D printing |
US9956725B2 (en) | 2013-03-22 | 2018-05-01 | Markforged, Inc. | Three dimensional printer for fiber reinforced composite filament fabrication |
US20170173868A1 (en) | 2013-03-22 | 2017-06-22 | Markforged, Inc. | Continuous and random reinforcement in a 3d printed part |
US9126367B1 (en) | 2013-03-22 | 2015-09-08 | Markforged, Inc. | Three dimensional printer for fiber reinforced composite filament fabrication |
US9688028B2 (en) | 2013-03-22 | 2017-06-27 | Markforged, Inc. | Multilayer fiber reinforcement design for 3D printing |
US9186848B2 (en) | 2013-03-22 | 2015-11-17 | Markforged, Inc. | Three dimensional printing of composite reinforced structures |
US10259160B2 (en) | 2013-03-22 | 2019-04-16 | Markforged, Inc. | Wear resistance in 3D printing of composites |
US9186846B1 (en) | 2013-03-22 | 2015-11-17 | Markforged, Inc. | Methods for composite filament threading in three dimensional printing |
US9579851B2 (en) | 2013-03-22 | 2017-02-28 | Markforged, Inc. | Apparatus for fiber reinforced additive manufacturing |
US9149988B2 (en) | 2013-03-22 | 2015-10-06 | Markforged, Inc. | Three dimensional printing |
US9694544B2 (en) | 2013-03-22 | 2017-07-04 | Markforged, Inc. | Methods for fiber reinforced additive manufacturing |
CN107187022B (en) | 2013-03-22 | 2020-08-11 | 格雷戈里·托马斯·马克 | Three-dimensional printing |
US10682844B2 (en) | 2013-03-22 | 2020-06-16 | Markforged, Inc. | Embedding 3D printed fiber reinforcement in molded articles |
EP3003694B1 (en) | 2013-05-31 | 2018-10-10 | United Technologies Corporation | Continuous fiber-reinforced component fabrication |
EP3004435B1 (en) | 2013-06-05 | 2018-08-08 | Markforged, Inc. | Methods for fiber reinforced additive manufacturing |
US10618217B2 (en) | 2013-10-30 | 2020-04-14 | Branch Technology, Inc. | Cellular fabrication and apparatus for additive manufacturing |
CA2928481A1 (en) | 2013-10-30 | 2015-05-07 | Laing O'rourke Australia Pty Limited | Method for fabricating an object |
HUE055012T2 (en) | 2013-10-30 | 2021-10-28 | Branch Tech Inc | Additive manufacturing of buildings and other structures |
US20160243762A1 (en) | 2013-11-15 | 2016-08-25 | Fleming Robert J | Automated design, simulation, and shape forming process for creating structural elements and designed objects |
WO2015073992A1 (en) | 2013-11-15 | 2015-05-21 | Fleming Robert J | Shape forming process and application thereof for creating structural elements and designed objects |
US9085109B2 (en) * | 2013-11-15 | 2015-07-21 | Makerbot Industries, Llc | Three-dimensional printer tool systems |
EP3071396B1 (en) | 2013-11-19 | 2021-10-06 | Guill Tool & Engineering | Coextruded, multilayered and multicomponent 3d printing inputs |
JP6563953B2 (en) | 2013-12-26 | 2019-08-28 | テキサス・テック・ユニバーシティー・システム | Local heating of CNT-filled polymer composites by microwave induction to enhance internal bead diffusion bonding of shaped articles by hot melt filament manufacturing method |
WO2015156877A2 (en) | 2014-01-17 | 2015-10-15 | Graphene 3D Lab Inc. | Fused filament fabrication using multi-segment filament |
EP3102411A4 (en) | 2014-02-04 | 2017-11-29 | Samir Shah | Device and method of manufacturing customizable three-dimensional objects |
WO2015149054A1 (en) | 2014-03-28 | 2015-10-01 | Ez Print, Llc | 3d print bed having permanent coating |
WO2015164954A1 (en) | 2014-04-30 | 2015-11-05 | Magna International Inc. | Apparatus and process for forming three-dimensional objects |
US11104120B2 (en) | 2014-05-27 | 2021-08-31 | Nihon University | Three-dimensional printing system, three-dimensional printing method, molding device, fiber-containing object, and production method thereof |
US20160012935A1 (en) | 2014-07-11 | 2016-01-14 | Empire Technology Development Llc | Feedstocks for additive manufacturing and methods for their preparation and use |
US9808991B2 (en) | 2014-07-29 | 2017-11-07 | Cc3D Llc. | Method and apparatus for additive mechanical growth of tubular structures |
US10052822B1 (en) * | 2014-08-01 | 2018-08-21 | Amazon Technologies, Inc. | Selective pausing of 3D print jobs |
DE102014215935A1 (en) | 2014-08-12 | 2016-02-18 | Airbus Operations Gmbh | Apparatus and method for manufacturing components from a fiber reinforced composite material |
IL282056B (en) | 2014-08-21 | 2022-09-01 | Mosaic Mfg Ltd | Series enabled multi-material extrusion technology |
US9931778B2 (en) | 2014-09-18 | 2018-04-03 | The Boeing Company | Extruded deposition of fiber reinforced polymers |
US10118375B2 (en) | 2014-09-18 | 2018-11-06 | The Boeing Company | Extruded deposition of polymers having continuous carbon nanotube reinforcements |
WO2016077473A1 (en) | 2014-11-14 | 2016-05-19 | Nielsen-Cole Cole | Additive manufacturing techniques and systems to form composite materials |
EP3227088A1 (en) | 2014-12-01 | 2017-10-11 | SABIC Global Technologies B.V. | Additive manufacturing process automation systems and methods |
WO2016088048A1 (en) | 2014-12-01 | 2016-06-09 | Sabic Global Technologies B.V. | Rapid nozzle cooling for additive manufacturing |
US20170266876A1 (en) | 2014-12-01 | 2017-09-21 | Sabic Global Technologies B.V. | Nozzle tool changing for material extrusion additive manufacturing |
US10226103B2 (en) | 2015-01-05 | 2019-03-12 | Markforged, Inc. | Footwear fabrication by composite filament 3D printing |
FR3031471A1 (en) | 2015-01-09 | 2016-07-15 | Daher Aerospace | PROCESS FOR THE PRODUCTION OF A COMPLEX COMPOSITE WORKPIECE, IN PARTICULAR A THERMOPLASTIC MATRIX AND PIECE OBTAINED BY SUCH A METHOD |
US9878481B2 (en) * | 2015-03-02 | 2018-01-30 | Makerbot Industries, Llc | Extruder for three-dimensional printers |
US20160263823A1 (en) | 2015-03-09 | 2016-09-15 | Frederick Matthew Espiau | 3d printed radio frequency absorber |
US20160271876A1 (en) | 2015-03-22 | 2016-09-22 | Robert Bruce Lower | Apparatus and method of embedding cable in 3D printed objects |
CN107428061A (en) | 2015-03-31 | 2017-12-01 | 京洛株式会社 | The manufacture method of lines resin-formed body, the forming method of three-dimensional body and lines resin-formed body |
CN107614766B (en) * | 2015-04-03 | 2021-04-27 | 明亮简化结构有限责任公司 | Apparatus for controllably cutting fibers and related methods |
WO2016196382A1 (en) | 2015-06-01 | 2016-12-08 | Velo3D, Inc. | Three-dimensional printing and three-dimensional objects formed using the same |
DE102015109855A1 (en) | 2015-06-19 | 2016-12-22 | Airbus Operations Gmbh | Method for producing components, in particular elongated profiles from strip-shaped, pre-impregnated fibers (prepreg) |
US11571278B2 (en) | 2015-07-07 | 2023-02-07 | Align Technology, Inc. | Systems, apparatuses and methods for dental appliances with integrally formed features |
US10492888B2 (en) | 2015-07-07 | 2019-12-03 | Align Technology, Inc. | Dental materials using thermoset polymers |
US10959810B2 (en) | 2015-07-07 | 2021-03-30 | Align Technology, Inc. | Direct fabrication of aligners for palate expansion and other applications |
US11419710B2 (en) | 2015-07-07 | 2022-08-23 | Align Technology, Inc. | Systems, apparatuses and methods for substance delivery from dental appliance |
US11045282B2 (en) | 2015-07-07 | 2021-06-29 | Align Technology, Inc. | Direct fabrication of aligners with interproximal force coupling |
US11642194B2 (en) | 2015-07-07 | 2023-05-09 | Align Technology, Inc. | Multi-material aligners |
WO2017006178A1 (en) | 2015-07-07 | 2017-01-12 | Align Technology, Inc. | Systems, apparatuses and methods for substance delivery from dental appliances and for ornamental designs on dental appliances |
US20180015668A1 (en) | 2015-07-09 | 2018-01-18 | Something3D Ltd. | Method and apparatus for three dimensional printing |
US20170015060A1 (en) | 2015-07-17 | 2017-01-19 | Lawrence Livermore National Security, Llc | Additive manufacturing continuous filament carbon fiber epoxy composites |
US9944016B2 (en) | 2015-07-17 | 2018-04-17 | Lawrence Livermore National Security, Llc | High performance, rapid thermal/UV curing epoxy resin for additive manufacturing of short and continuous carbon fiber epoxy composites |
US9926796B2 (en) | 2015-07-28 | 2018-03-27 | General Electric Company | Ply, method for manufacturing ply, and method for manufacturing article with ply |
US10343330B2 (en) | 2015-07-31 | 2019-07-09 | The Boeing Company | Systems for additively manufacturing composite parts |
US10232570B2 (en) | 2015-07-31 | 2019-03-19 | The Boeing Company | Systems for additively manufacturing composite parts |
US10343355B2 (en) | 2015-07-31 | 2019-07-09 | The Boeing Company | Systems for additively manufacturing composite parts |
US10232550B2 (en) | 2015-07-31 | 2019-03-19 | The Boeing Company | Systems for additively manufacturing composite parts |
US10201941B2 (en) | 2015-07-31 | 2019-02-12 | The Boeing Company | Systems for additively manufacturing composite parts |
US10195784B2 (en) | 2015-07-31 | 2019-02-05 | The Boeing Company | Systems for additively manufacturing composite parts |
US10582619B2 (en) | 2015-08-24 | 2020-03-03 | Board Of Regents, The University Of Texas System | Apparatus for wire handling and embedding on and within 3D printed parts |
WO2017035313A1 (en) | 2015-08-25 | 2017-03-02 | University Of South Carolina | Integrated robotic 3d printing system for printing of fiber reinforced parts |
US10464268B2 (en) | 2015-08-25 | 2019-11-05 | The Boeing Company | Composite feedstock strips for additive manufacturing and methods of forming thereof |
US10357924B2 (en) | 2015-08-25 | 2019-07-23 | The Boeing Company | Composite feedstock strips for additive manufacturing and methods of forming thereof |
US10336056B2 (en) | 2015-08-31 | 2019-07-02 | Colorado School Of Mines | Hybrid additive manufacturing method |
GB201516943D0 (en) | 2015-09-24 | 2015-11-11 | Victrex Mfg Ltd | Polymeric materials |
US10207426B2 (en) | 2015-10-14 | 2019-02-19 | Northrop Grumman Systems Corporation | Continuous fiber filament for fused deposition modeling (FDM) additive manufactured (AM) structures |
US11097440B2 (en) | 2015-11-05 | 2021-08-24 | United States Of America As Represented By The Administrator Of Nasa | Cutting mechanism for carbon nanotube yarns, tapes, sheets and polymer composites thereof |
US10500836B2 (en) | 2015-11-06 | 2019-12-10 | United States Of America As Represented By The Administrator Of Nasa | Adhesion test station in an extrusion apparatus and methods for using the same |
US10513080B2 (en) | 2015-11-06 | 2019-12-24 | United States Of America As Represented By The Administrator Of Nasa | Method for the free form fabrication of articles out of electrically conductive filaments using localized heating |
US9889606B2 (en) | 2015-11-09 | 2018-02-13 | Nike, Inc. | Tack and drag printing |
EP3168034A1 (en) | 2015-11-12 | 2017-05-17 | Fraunhofer Gesellschaft zur Förderung der angewandten Forschung e.V. | Device for additive production of a component |
ITUB20155642A1 (en) | 2015-11-17 | 2017-05-17 | Milano Politecnico | Equipment and method for three-dimensional printing of continuous fiber composite materials |
US11691333B2 (en) | 2015-11-17 | 2023-07-04 | Zephyros, Inc. | Additive manufacturing materials system |
US10150262B2 (en) | 2015-11-20 | 2018-12-11 | The Boeing Company | System and method for cutting material in continuous fiber reinforced additive manufacturing |
US20170151728A1 (en) | 2015-11-30 | 2017-06-01 | Ut-Battelle, Llc | Machine and a Method for Additive Manufacturing with Continuous Fiber Reinforcements |
US10335991B2 (en) | 2015-12-08 | 2019-07-02 | Xerox Corporation | System and method for operation of multi-nozzle extrusion printheads in three-dimensional object printers |
US10625466B2 (en) | 2015-12-08 | 2020-04-21 | Xerox Corporation | Extrusion printheads for three-dimensional object printers |
US10456968B2 (en) | 2015-12-08 | 2019-10-29 | Xerox Corporation | Three-dimensional object printer with multi-nozzle extruders and dispensers for multi-nozzle extruders and printheads |
US10173410B2 (en) * | 2015-12-08 | 2019-01-08 | Northrop Grumman Systems Corporation | Device and method for 3D printing with long-fiber reinforcement |
EP3386734B1 (en) | 2015-12-11 | 2021-11-10 | Massachusetts Institute Of Technology | Methods for deposition-based three-dimensional printing |
DE102015122647A1 (en) | 2015-12-22 | 2017-06-22 | Arburg Gmbh + Co. Kg | Device and method for producing a three-dimensional object with a fiber feed device |
US10369742B2 (en) | 2015-12-28 | 2019-08-06 | Southwest Research Institute | Reinforcement system for additive manufacturing, devices and methods using the same |
EP3402653B1 (en) | 2016-01-12 | 2023-03-08 | Markforged, Inc. | Embedding 3d printed fiber reinforcement in molded articles |
KR101755015B1 (en) | 2016-01-14 | 2017-07-06 | 주식회사 키스타 | Transformer controlling movement of head unit and tension and temperature of plastic formable material |
KR101826970B1 (en) | 2016-01-14 | 2018-02-07 | 주식회사 키스타 | Raw material feeding apparatus for feeding raw material made of plastic formable materials, and three-dimensional product manufacturing robot having the same |
KR101785703B1 (en) | 2016-01-14 | 2017-10-17 | 주식회사 키스타 | Head unit and head supply unit for controlling discharge of raw material made of plastic formable materials |
WO2017124085A1 (en) | 2016-01-15 | 2017-07-20 | Markforged, Inc. | Continuous and random reinforcement in a 3d printed part |
JP6602678B2 (en) | 2016-01-22 | 2019-11-06 | 国立大学法人岐阜大学 | Manufacturing method of three-dimensional structure |
JP6251925B2 (en) | 2016-01-22 | 2017-12-27 | 国立大学法人岐阜大学 | Manufacturing method of three-dimensional structure and filament for 3D printer |
MX2018009683A (en) | 2016-02-11 | 2019-06-10 | Kuster Martin | Movable printing devices for three-dimensional printers. |
WO2017142867A1 (en) | 2016-02-15 | 2017-08-24 | Georgia-Pacific Chemicals Llc | Extrusion additive manufacturing of pellets or filaments of thermosetting resins |
WO2017150186A1 (en) | 2016-02-29 | 2017-09-08 | 学校法人日本大学 | Three-dimensional printing apparatus and three-dimensional printing method |
EP3426474B1 (en) | 2016-03-10 | 2023-10-25 | Mantis Composites Inc. | Additive manufacturing of composites |
EP3219474B1 (en) | 2016-03-16 | 2019-05-08 | Airbus Operations GmbH | Method and device for 3d-printing a fiber reinforced composite component by tape-laying |
US10052813B2 (en) | 2016-03-28 | 2018-08-21 | Arevo, Inc. | Method for additive manufacturing using filament shaping |
US10234342B2 (en) | 2016-04-04 | 2019-03-19 | Xerox Corporation | 3D printed conductive compositions anticipating or indicating structural compromise |
US20180065307A1 (en) * | 2016-09-06 | 2018-03-08 | Cc3D Llc | Systems and methods for controlling additive manufacturing |
US10040240B1 (en) * | 2017-01-24 | 2018-08-07 | Cc3D Llc | Additive manufacturing system having fiber-cutting mechanism |
WO2019078974A1 (en) * | 2017-10-20 | 2019-04-25 | Desktop Metal, Inc. | Nozzle servicing techniques for additive fabrication systems |
-
2019
- 2019-05-28 US US16/424,381 patent/US20200086563A1/en not_active Abandoned
- 2019-05-31 WO PCT/US2019/034837 patent/WO2020055466A1/en active Application Filing
- 2019-07-18 US US16/516,119 patent/US11235539B2/en active Active
- 2019-07-26 WO PCT/US2019/043735 patent/WO2020055513A1/en active Application Filing
- 2019-08-01 US US16/528,964 patent/US20200086565A1/en not_active Abandoned
- 2019-08-03 US US16/531,055 patent/US11338528B2/en active Active
-
2021
- 2021-12-08 US US17/643,339 patent/US20220097316A1/en not_active Abandoned
- 2021-12-08 US US17/643,321 patent/US20220097315A1/en not_active Abandoned
-
2022
- 2022-04-20 US US17/659,968 patent/US20220242060A1/en active Pending
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6022207A (en) * | 1998-01-26 | 2000-02-08 | Stratasys, Inc. | Rapid prototyping system with filament supply spool monitoring |
US20140265040A1 (en) * | 2013-03-15 | 2014-09-18 | Stratasys, Inc. | Additive manufacturing system and method for printing three-dimensional parts using velocimetry |
US9126365B1 (en) * | 2013-03-22 | 2015-09-08 | Markforged, Inc. | Methods for composite filament fabrication in three dimensional printing |
US20150165677A1 (en) * | 2013-12-13 | 2015-06-18 | Xyzprinting, Inc. | Printing head module |
US20170001384A1 (en) * | 2015-06-30 | 2017-01-05 | Airbus Defence and Space GmbH | Devices and methods for depositing reinforcing fiber tapes and detecting laying errors |
US20170028637A1 (en) * | 2015-07-31 | 2017-02-02 | The Boeing Company | Systems and methods for additively manufacturing composite parts |
US20170129171A1 (en) * | 2015-11-09 | 2017-05-11 | U.S.A. As Represented By The Administrator Of The National Aeronautics And Space Administration | Devices and Methods for Additive Manufacturing Using Flexible Filaments |
US20170129178A1 (en) * | 2015-11-09 | 2017-05-11 | Nike, Inc. | Selective Attachment of a Yarn Structure |
US20200019141A1 (en) * | 2018-07-16 | 2020-01-16 | The Boeing Company | Method and system for verification of tow end placement |
US20200086574A1 (en) * | 2018-09-13 | 2020-03-19 | Continouos Composites Inc. | System for additively manufacturing composite structures |
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WO2020055466A1 (en) | 2020-03-19 |
US20200086574A1 (en) | 2020-03-19 |
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