• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Process for the additive production of high-strength components using the 2D or 3D printing process, in which a continuous fiber (2), which comprises at least one axial fiber strand, is impregnated in a coating machine (3), preferably void-free, with a heat-meltable plastic of a matrix material, and then is guided via a conveyor unit (6) through a cutting device and then through a heating zone with at least one heating element (15), in the area of which the heat-fusible matrix material is brought to a temperature above the melting temperature of the matrix material in order to at least partially supply the matrix material within the filament melt in order to then join the thus coated continuous fiber (22) on a storage surface with further coated continuous fibers stored there in a fusion bond to form a 2D or 3D body, the conveyor section being cooled downstream of the conveyor unit (6) and upstream of the heating zone .
    公开号:CH716021A2
    申请号:CH00359/20
    申请日:2020-03-25
    公开日:2020-09-30
    发明作者:Ropele Philipp；Zudrell Werner；Lechner Bernd；Gasser Manfred
    申请人:Aps Automatisierte Produktions Systeme Ges M B H；
    IPC主号:
    专利说明:

    The invention relates to a method and a device for the additive manufacture of high-strength components according to the preamble of claim 1. Such a method has become known, for example, with the subject matter of EP 3 004 435 B1. In these known methods, an unmelted fiber-reinforced composite filament, which comprises at least one axial fiber strand which extends within a matrix material of the filament, is heated at a certain feed rate, the temperature being above the melting temperature of the matrix material, around the matrix material at least partially within the filament to melt. A plastic-soaked filament thread is produced therefrom, which is subjected to the further processing steps according to EP 3 004 435 B1.
    The filament thread prepared in this way is cut off in the area of a conveyor line and fed as a cut thread to a downstream heating zone, where the plastic material is melted and the thread is brought into a doughy state so that it passes through a dispensing nozzle and a deflecting lip on a workpiece or a Surface can be deposited and then hardened.
    [0003] The disadvantage of this arrangement is that the filament soaked with plastic cannot be guided straight without kinking in a longer axial area because there is a lack of guide means. The material is in a relatively soft, doughy and elastic state, so that when processing the material there is a risk that the material will build up, kink in the feed section and also in the nozzle and lead to irreversible blockages of the entire conveyor section.
    Another disadvantage is that a controlled cutting process is not possible because the cutting device should already cut the heated thread, which is associated with difficulties in the area of the cutting station.
    Also beyond the cutting station, this publication shows no cooling in order to at least partially cool down an already heated thread which has been put into a doughy state. This has the disadvantage that the thread cannot be guided precisely, so that it tends to buckle and that further processing is difficult.
    The invention is therefore based on the object of developing a method and a device according to the subject matter of EP 3 004 435 B1 in such a way that operationally reliable processing of a filament thread soaked with plastic material is reliably possible.
    To solve the problem, the invention is characterized by the technical teaching of claim 1.
    The preferred method feature of the invention is that, starting from the input sleeve downstream of the conveyor line for the axial transport of a continuous fiber or a long fiber or a medium fiber or a short fiber to the nozzle, contact cooling is present, which is preferably designed as a circumferential ring cooling and which preferably works with a liquid cooling medium.
    According to one embodiment of the invention, it is preferred if the liquid cooling medium is water or a liquid comparable to water and the temperature of the cooling medium is in the range between 30 and 10 degrees Celsius.
    The coolant temperature range specified here is only preferred for the present application, because it is preferred that the entire feed path in which the plastic-impregnated continuous fiber is guided is cooled below room temperature in order to ensure that through this pre-cooling the continuous fiber impregnated with plastic, which has not yet been melted, is given a certain pre-rigidity, which allows simplified processing (guidance stability and cut resistance).
    Advantages over the prior art can thus be achieved, because the lower the cooling temperature, the stiffer the plastic-impregnated continuous fiber and the better the promotion in the longitudinal conveying pipe, which increases process reliability.
    It was previously not known from the prior art to bring the uncut and soaked with plastic, but still approximately at room temperature continuous fiber to a greater rigidity that would not be available at room temperature.
    This has the advantage that an undesired heat return from the heating element arranged on the nozzle side is avoided backwards in the conveying line for the promotion of the continuous fiber, because in this area at least one but preferably two cooling lines are arranged, which provide a backward heat return counter to the conveying direction Avoid in order to ensure that the continuous fiber does not heat up undesirably before entering the heating element, so that it softens prematurely and is therefore difficult to convey.
    For this reason, it is also sufficient if the coolant has about the temperature of room temperature or below room temperature, because even at room temperature, a heat return flow from the heating element, which is heated to a temperature of about 300 ° C, backwards is avoided in the conveyor line.
    It is therefore a special type of thermal insulation or a barrier for heat return, which is achieved according to the invention by one, two or more cooling sections arranged one after the other at an axial distance.
    In a further development of the invention, it is also provided that behind the heating element in the direction of the conveyor line backwards, there is also additional thermal insulation in the manner of a disk, so that an increased heat return is also avoided in the cooling path connected behind it.
    According to a further preferred feature of the invention it is provided that the cutting edge for cutting off the continuous fiber, which is not yet heated in this area, is arranged in the area between two spaced cooling sections and the continuous fiber to be cut at least one before the cut Has passed through a cooling section and has therefore already been brought to a certain increased rigidity in order to achieve a better cut.
    According to a further feature of the invention is a miniaturized arrangement in which the elements described above are summarized in a small space because, for example, according to a further feature of the invention it is provided that the cutting drive for the cutting device and the feed drive for the feed of the continuous fiber can be fed by one and the same drive.
    A motor-gear unit drives both units, so that no separate drives are required and the entire arrangement can be further miniaturized.
    In a preferred embodiment of the invention it is also provided that an eccentric cutting device rotatably driven in the circumferential direction is present, although the invention is not limited thereto.
    In a preferred embodiment, it is an eccentric shaft which is mounted in a support tube and rotatably driven there. It is particularly advantageous that the plastic-impregnated continuous fiber is guided lengthways coaxially through the axial bore of the eccentric shaft, which results in a particularly high gain in space because a large-scale cutting device arranged outside the housing is avoided. The axial bore of the eccentric shaft thus serves as an axial guide path for the thread in this area.
    However, the invention is not limited to such an embodiment. In another embodiment, it can be provided that a cutting blade located outside the housing and the conveying path is used, which cuts the continuous fiber in the radial direction, which, however, requires more space, as is known, for example, from EP 3 004 435 B1 is.
    The arrangement of an eccentric cutting shaft for driving the cutting edges, which are arranged at the front axial end, has the further advantage that the continuous fiber can be guided coaxially through the interior of the eccentric cutting shaft and is thus guided in all radial directions and cannot evade, which is not the case with a radial cutting blade that is radially movable.
    The invention is not limited to a single universal drive unit, consisting of motor and gearbox, for the simultaneous drive of the cutting device and the conveyor device. Of course, in another embodiment, provision can also be made to arrange a separate drive unit for each of the units.
    With the method outlined here, the problem of the form in which the plastic and the reinforcement material is fed in "continuous fiber" in order to then be applied to the component is mastered. With continuous fibers, as with the standard FFF process, the printing process cannot simply be interrupted at any point in order to continue printing at the desired (distant) point. When processing continuous fibers, you have to cut exactly before you can continue printing at any other point / location.
    The invention therefore relates to a method and an arrangement for AM (additive manufacturing) for the production of high-strength or extremely high-strength components, using plastics reinforced with continuous fibers and / or plastics filled with short fibers that are reinforced with continuous fibers are.
    For the exact cutting process, an “inline cutting device” is proposed here, which manages without an additional drive. Only a material feed motor with special output elements is used, which also enable the cutting process.
    In addition, an exact feed (precise feed lengths) is required for high-quality printing results. A new type of double caterpillar feed is proposed here. This means that the filament to be conveyed is conveyed particularly gently in the conveying gap, which is formed by two caterpillar-like belt strands.
    With this system all common fibers (textile or plastic or glass or carbon) but also plastics can be processed. These can be natural fibers as well as synthetic fibers. The same applies to the matrix composition used. These are preferably heat-fusible materials.
    According to a preferred further feature of the invention it is provided that the conveyor line consists of two opposite belt strands which form a conveyor gap extending in the axial direction between them through which the plastic-impregnated continuous fiber is guided over a longer axial length.
    In a preferred embodiment, a conveying length in the range between 20 to 40 mm is provided for the conveying unit, which ensures excellent straight guidance of the continuous fiber in the area of this conveying path.
    In the case of two opposing rollers, as they are known from the publication EP 3 004 435 B1, insufficient longitudinal guidance is achieved because the contact surfaces in the conveying path are greatly shortened. The invention provides contact surfaces for conveying the continuous fiber, which extend over the entire axial conveying path of the conveying unit.
    The belt conveyance of the continuous filament over two conveyor belts extending in the axial direction has the further advantage that the continuous fiber is not damaged because it is not compressed or kinked, as is the case with opposite conveyor rollers according to EP 3 004 435 B1 could be the case.
    The subject matter of the present invention results not only from the subject matter of the individual patent claims, but also from the combination of the individual patent claims with one another.
    All information and features disclosed in the documents, including the abstract, in particular the spatial configuration shown in the drawings, could be claimed as essential to the invention, provided that they are new, individually or in combination, compared to the prior art. The use of the terms “essential” or “according to the invention” or “essential to the invention” is subjective and does not imply that the features named in this way must necessarily be part of one or more patent claims.
    [0036] The invention is explained in more detail below with the aid of drawings showing only one embodiment. Further features and advantages of the invention that are essential to the invention emerge from the drawings and their description.
    [0037] They show:<tb> <SEP> FIG. 1: a schematic representation of the arrangement according to the invention<tb> <SEP> Figure 2: a longitudinal section through a machine-based design of the device<tb> <SEP> Figure 3: the section rotated by 90 ° in comparison to Figure 2<tb> <SEP> FIG. 4: the side view of the arrangement according to FIG. 2<tb> <SEP> FIG. 5: a perspective view of the device according to FIGS. 2 to 4
    In Figure 1, the structure of a 3D printer 1 according to the invention is shown schematically, wherein in the area of a coating machine 3, which is arranged outside the actual device of the 3D printer 1, a plastic material is fed, which is applied to the direction of the arrow 4 continuous fiber 2 introduced into the coating machine 3 is applied in order to coat it with a plastic compound. As described in EP 3 004 435 B1, this involves a gap-filling wetting process of all fiber bundles, so that this coating achieves an essentially uniform plastic body which is reinforced in the central middle area by a continuous fiber.
    In a preferred embodiment of the invention, the continuous fiber is designed as a carbon fiber in order to be able to produce high-strength and extremely high-strength components.
    Instead of using carbon fibers or carbon filaments, other fiber elements can of course also be used, such as. B. glass fibers, solid plastic or textile fibers and the like.
    In a second exemplary embodiment, a continuous fiber bundle made of carbon fibers is assumed, which is referred to in the following description as “continuous fiber 2”.
    At the entrance of the 3D printer 1, a conveyor unit 6 is arranged, which consists essentially of two opposite conveyor strands 23, 24, which form an axial conveying path 28 between them, which extends over a long axial path so that one to achieve optimal straight guidance of the continuous fiber 2 introduced there.
    At the output of the conveyor unit 6, there is a carrier tube 7, through which the continuous fiber is conveyed further coaxially and thereby passes coaxially into the interior of an eccentric cutting shaft 8 which is part of a cutting device 9.
    As will be described later, the eccentric cutting shaft 8 is driven rotatably in the direction of arrows 10 in the circumferential direction, in order to enable a circular cutting action in the region of the cutting edge 13.
    According to a preferred feature of the invention it is provided that upstream in front of the cutting edge 13 of the eccentric cutting shaft 8, a first cooling section 11 is arranged, which works with a housing-connected contact cooling. The heat transfer medium used is preferably water or another heat transfer medium.
    The first cooling section 11 is at a distance 19 from a second cooling section 12 arranged behind it in the axial direction, but the invention is not limited to two cooling sections 11, 12 arranged one behind the other. More than two cooling sections can also be used, and only a single continuous cooling section can also be used, which extends over the entire area of the first and second cooling sections.
    In a preferred embodiment, the cooling medium can first be introduced into the second cooling section 12, and the outlet of the second cooling section is connected to one another in a fluid-conducting manner with the inlet of the first cooling section. The cooling sections are therefore connected to one another in series.
    According to a preferred further features of the invention, a thermal insulation 14 is arranged to avoid heat reflux at the output of the second cooling section in the direction of the heating element 15 located behind it, which z. B. may consist of a heat-insulating disk, a sleeve or the like, which prevents heat conduction in the support tube 7 from the heating element 15 backwards into the cooling section 11, 12 as far as possible.
    Beyond the thermal insulation 14, which is preferably designed as a disk or sleeve, the heating element 15 is arranged, and then the nozzle 16 is arranged through which the heated and put into a doughy and elastic state continuous fiber bundle leaves the 3D printer.
    On the right-hand side in Figure 1 is shown schematically that the 3D printer, d. H. the entire arrangement shown in FIG. 1, with the exception of the coating machine 3, e.g. B. may be part of a six-axis drive machine, such. B. a robot head that can be moved in six different axes.
    It is preferred if a movement preferably takes place in the three spatial axes X, Y and Z and that an additional axis of rotation can be assigned to each spatial axis.
    However, the invention is not dependent on such a 3D spatial movement, because in some cases it is sufficient to only ensure a linear deposition of a continuous fiber in the X and / or Y direction on a specific surface.
    Instead of the six-axis drive 18, all other drives can be used that work with fewer axes, e.g. X or X-Y carriage arrangements.
    In any case, the doughy continuous fiber 2 leaves the nozzle 16 in the direction of arrow 17.
    The term “doughy state” is understood to mean that the continuous fiber 2 leaving the nozzle 16 in the direction of arrow 17 can be brought into an adhesive state with adjacent continuous fibers in order to form a composite component on a storage surface.
    In Figures 2 to 5, a preferred machine design of a 3D printer 1 is shown, the plastic-coated continuous fiber 2 is drawn into the mouth of the insertion sleeve 20 in the direction of arrow 4 after the conveyor unit 6 shown performs the feed.
    The conveyor unit 6 consists essentially of the two opposite belt runs 23, 24, one belt run 23 running over a drive gear 25 and the gear 55 driven by a motor 54 being driven to rotate in the direction of the arrow.
    The belt run runs over a further gear wheel 26 and is deflected there and then runs over a deflection wheel 29 after it has passed through the conveying path.
    One gear wheel 26 is in meshing engagement with the opposite gear wheel 27 of the second conveyor strand 24, which is thus also driven in the same conveying direction, the conveyor strand 24 being deflected via the deflecting wheel 30.
    In this way, a conveying path 28 extending in the axial direction over a very long length is formed, between which the continuous fiber 2 is gently transported forward.
    At the outlet of the conveying path 28, the mouth of a conveying hose 31 is connected, which is preferably made of a PTFE material and which ensures friction-free guidance of the continuous fiber 2 guided there coaxially.
    It is also added that the interior of the guide sleeve 20 is lined with a guide hose 21, which is not shown for reasons of drawing and whose clear width corresponds approximately to the downstream conveying hose 31.
    The conveying hose 31 extends over the entire length of the support tube 7, the support tube 7 being divided into two parts, namely a support tube 7a, which is directly connected to the base body 42 of the 3D printer 1 and the axial extension of the support tube 7a merges into a spring housing 53 with a larger diameter, in which a compression spring 33 is arranged, one end of which is supported on a shoulder of the support tube 7a.
    The opposite part of the compression spring 33 is supported on a sliding washer 34 which is supported on the axial end of the eccentric cutting shaft 8, which is rotatably mounted in the longitudinal bore of the support tube 7b and via a screw-in part 56, which is only indicated in FIG , is rotatably driven.
    The front axial end of the eccentric cutting shaft 8 is equipped with a cutting edge 13 so that the cut continuous fiber 2 is further conveyed at the mouth outlet of the conveying hose 31. This can be short or very long cutting lengths of the cut fibers.
    Downstream of the cutting edge 13, the heating element 15 is arranged, the heating power of which is regulated by a temperature sensor 40.
    According to a preferred feature of the invention it is provided that upstream of the nozzle 16 there is a thermal insulation 14 in order to prevent undesired heat return from the nozzle 16, which is at a temperature of approximately 350 to 400 ° Celsius, into the carrier tube 7 to avoid.
    For this purpose, the invention provides, according to a preferred feature, two axially spaced one behind the other cooling sections 11, 12, the first cooling section is preferably arranged upstream of the cutting edge 13, which has the advantage that - by this pre-cooling of the continuous fiber cutting - the continuous fiber has a certain rigidity and can therefore be cut off better and smoother.
    The second cooling section 12 is arranged downstream of the cutting edge 13, both cases involving contact-based cooling with preferably a liquid cooling medium. The liquid cooling medium can be water, an oil or other liquid heat transfer media.
    Instead of a liquid cooling medium, gaseous cooling media can also be used, such as. B. LPG, nitrogen and the like.
    The arrangement of at least one cooling section 11 and / or 12 prevents undesired heat return from the heating element 15 and the nozzle 16 backwards into the carrier tube 7 and also into the cutting device, which leads to reliable results.
    The second support tube 7b is connected to the first support tube 7a by a lock nut 32 in order to form a spring housing 53 with an enlarged diameter for receiving the compression spring 33.
    In Figures 3 and 4 2, the passage 38 for the arrangement of the second cooling section 12 can be seen.
    In the first cooling section 11, an annular sleeve 36 is assigned, which surrounds the conveying pipe 7b completely in a contact-making manner. The reference numeral 62 denotes the cooling space through which the cooling medium flows and which completely surrounds the support tube 7b.
    The same illustration also results for the second cooling station 12, which also has a cooling space 62 running all around.
    The hose mouth 35 of the conveyor hose 31 has a certain axial distance from the cutting edge 13 in order to ensure an undisturbed cutting process.
    In Figure 2, the heating jacket 37 is shown for the heating element 15, which is also fixed from the outside via a grub screw 63 in the support tube 7b.
    Another insulating disk 39 separates the cooling station 11 from the heating jacket 37 in terms of thermal technology.
    FIG. 3 shows the section rotated by 90 ° in comparison to FIG. 2, where a motor gear unit 54, 55 arranged in separate housings is shown and the same reference numerals are otherwise used for the same parts. The particular miniaturized arrangement of the drive for the eccentric cutting shaft 8 is shown in the drawing in FIG. 3 in conjunction with the drawings in FIGS. 4 and 5.
    According to Figures 4 and 5, the drive for the rotary drive of the eccentric cutting shaft 8 is formed by a two-armed lever 48, the end of which is received in a ball joint 50, which receives one end of a connecting lever 59, the opposite end in a further ball joint 51 is articulated.
    The ball joint 51 is connected to a screw-in part 56 with which the screw-in sleeve indicated in the drawing in FIG. 2 is screwed in.
    There, the rotary drive of the eccentric cutting shaft 8 takes place in the arrow directions 10 in a clockwise and counterclockwise direction.
    The setting shaft 45 can be axially adjusted and the angle of rotation of the eccentric cutting shaft 8 can be set.
    The two conveyor strands 23, 24 can be pressed against one another by a pre-tensioning screw 52 in order to produce an axial pre-tension on the conveyor section 28 in order to increase the friction on the continuous fibers 2.
    From FIG. 2 it can also be seen that although a heating jacket 37 is present, at the same time internal cooling is provided for the heating jacket due to the cooling section 12 arranged there. The channel 57, which extends through the heating jacket 37, is thus also cooled.
    The various cooling sections 11, 12 have suitable cooling connections, the cooling connections of the cooling section 11 being provided with the reference numeral 60 and the cooling connections of the cooling section 12 being provided with the reference numeral 61. The heating element 15 has an electrical connection 41.
    The water inlet into the circumferential cooling space 62 takes place via the annular sleeve 58 of the second cooling section 12.
    The advantage of the invention is that a method and a device is described with which it is possible for the first time to process even thin and kink-prone continuous fiber bundles that are soaked with plastic, because an improved axial guidance of the with Plastic-soaked continuous fiber bundle is present in the area of the continuous printer. A kink in the conveyor line is avoided and an operationally reliable device is created.
    Drawing legend
    1 3D printer 2 continuous fiber 3 coating machine 4 direction of arrow 5 plastic 6 conveyor unit 7 support tube 7a, 7b 8 eccentric cutting shaft 9 cutting device 10 direction of arrow 11 cooling section (first) 12 cooling section (second) 13 cutting edge 14 thermal insulation 15 heating element 15a heating zone 16 nozzle 17 direction of arrow 18 6-axis drive 19 Distance 20 Insertion sleeve 21 Guide tube 22 Coated continuous fiber 23 Conveying strand (top) 24 Conveying strand (bottom) 25 Drive gear 26 Gear 27 Gear 28 Conveying section 29 Deflection wheel 30 Deflection wheel 31 Conveying hose 32 Lock nut 33 Pressure spring 34 Sliding disc 35 Hose opening 36 Ring sleeve von 11) 37 Heating jacket (von 15) 38 Feedthrough (for 12) 39 Insulating washer 40 Temperature sensor 41 Electrical connection 42 Base body 43 Adjusting screw 44 Adjusting nut 45 Adjusting shaft 46 Return spring 47 Screw bolt (from 43) 48 Lever 49 Pivot bearing 50 Ball joint 51 Ball joint 52 Pre-tensioning screw 53 Spring housing 54 Motor 55 Gear 56 Screw-in part 57 Ka nal 58 ring sleeve (of 12) 59 connecting lever 60 cooling connection (of 11) 61 cooling connection (of 12) 62 cooling chamber 63 grub screw
    权利要求:
    Claims (10)
    [1]
    1. A method for the additive manufacturing of high-strength components according to the 2D or 3D printing process, in which a continuous fiber (2) or a long fiber or a medium fiber or a short fiber comprising at least one axial fiber strand, preferably void-free, in a coating machine (3) is impregnated with a heat-fusible plastic of a matrix material, and then guided via a conveyor unit (6) through a cutting device (9) and then through a heating zone with at least one heating element (15), in the area of which the heat-fusible matrix material is brought to a temperature above the melting temperature of the matrix material is brought to melt the matrix material at least partially within the filament, in order to then connect the thus coated continuous fiber (22) on a storage surface with further coated continuous fibers stored there in a fusion bond to form a 2D or 3D body, thereby characterized in thatthe conveyor line downstream of the Conveyor unit (6) and upstream of the heating zone (15a) is cooled.
    [2]
    2. The method according to claim 1, characterized in that, in order to avoid heat flow back from the heating zone (15a) backwards in the direction of the cutting device (9), a conveying pipe (7) provided for the axial transport of the continuous fiber (22) is cooled.
    [3]
    3. The method according to claim 1 or 2, characterized in that the cooling of the conveying pipe (7) takes place via a liquid cooling medium, preferably water or a liquid comparable to water, and that the temperature of the cooling medium is in the range between 10 to 30 degrees Celsius, preferably is at room temperature.
    [4]
    4. The method according to any one of claims 1 to 3, characterized in that the cutting edge (13) for cutting off the continuous fiber (2) is arranged in the area between two cooling sections (11, 12) arranged at a distance from one another and the continuous fiber (2) to be cut is in front to bring the cut to an increased rigidity.
    [5]
    5. Device for the additive production of high-strength components according to the 2D or 3D printing process, in which a continuous fiber (2) or a long fiber or a medium fiber or a short fiber comprising at least one axial fiber strand, preferably void-free in a coating machine (3) can be impregnated with a heat-fusible plastic as matrix material, and then via a conveyor unit (6) through a cutting device (9) and then through a heating zone with at least one heating element (15), in the area of which the heat-fusible matrix material is brought to a temperature above the melting temperature of the matrix material can be brought to melt the matrix material at least partially within the filament in order to then connect the thus coated continuous fiber (22) on a storage surface with further coated continuous fibers stored there in a fusion bond to form a 2D or 3D body characterized in thatthe conveyor line is downstream of the conveyor the unit (6) and is cooled upstream of the heating zone (15a).
    [6]
    6. Device according to claim 5 for carrying out the method according to one of claims 1 to 4, characterized in that at least one liquid-supported contact cooling (11, 12) is arranged on a conveying pipe (7) through which the coated continuous fiber (22) in the axial direction is led.
    [7]
    7. Device according to one of claims 5 or 6, characterized in that the cooled delivery pipe (7) extends from the delivery unit (6) to in front of the heating zone (15a).
    [8]
    8. Device according to one of claims 5 to 7, characterized in that behind the heating element (15) in the direction of the conveying path backwards, there is additionally a thermal insulation (14) in the form of a disk.
    [9]
    9. Device according to one of claims 5 to 8, characterized in that the cutting drive for the cutting device (9) and the feed drive (6, 23, 24) for the feed of the continuous fiber (2) are driven by a single drive motor (54, 55) are.
    [10]
    10. Device according to one of claims 5 to 9, characterized in that the cutting device (9) consists of a rotatably driven eccentric cutting shaft (8), and that the continuous fiber (2) is guided through its axial central longitudinal bore.
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    同族专利:
    公开号 | 公开日
    AT522285A2|2020-10-15|
    DE102019107664A1|2020-10-01|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    CN105556008B|2013-06-05|2017-12-15|马克弗巨德有限公司|Method for fiber reinforcement addition manufacture|
    US10059053B2|2014-11-04|2018-08-28|Stratasys, Inc.|Break-away support material for additive manufacturing|
    PL230139B1|2016-04-11|2018-09-28|Omni3D Spolka Z Ograniczona Odpowiedzialnoscia|Printer head for three-dimensional printing|
    CN108943710A|2018-08-07|2018-12-07|上海市增材制造研究院有限公司|A kind of 3D printing spray head with cooling device|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102019107664.1A|DE102019107664A1|2019-03-26|2019-03-26|Process and device for the additive manufacturing of high-strength components|
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