205results about "Manufacturing material handling" patented technology

A thermal folding forming method for additive manufacturing of a three-dimensional lattice structure of a fiber-reinforced composite, the method comprising the following specific steps: a first step, printing a fiber-reinforced composite having a repeated two-dimensional planar lattice structure by means of a dual-nozzle continuous fiber-reinforced composite additive manufacturing apparatus; a second step, using a robotic arm gripper (4) to grip the printed fiber-reinforced composite having a two-dimensional planar lattice structure and place same onto a retractable hot roller thermal folding and heating device, and heating same at a fiber connection point, wherein the thermal folding device is arranged in a 10 x 10 columnar lattice and can be fully retracted with a retractable height ranging from 0-50 mm, such that the fiber-reinforced composite having a two-dimensional planar lattice structure is heated and elevated by means of the retractable hot roller, and can be folded into the fiber-reinforced composite having a three-dimensional lattice structure; and a third step, using the robotic arm gripper (4) to grip the fiber-reinforced composite having a three-dimensional lattice structure and place same into a water-cooling box for water cooling and shape setting. The forming method can improve the structural complexity of the fiber-reinforced composite, thereby achieving the three-dimensional structure transformation of the composite.

One example of a jettable antioxidant formulation is used for three-dimensional (3D) printing. The jettable antioxidant formulation includes an antioxidant blend; a surfactant, a dispersant, or a combination thereof; a water-soluble or water-miscible organic co-solvent; and water. The antioxidant blend consists of a primary antioxidant and a secondary antioxidant.

The invention relates to a medical high polymer material 3D intelligent printing method based on a selective laser sintering process. The method comprises the following steps that optimal initial process parameters are recommended based on material characteristics and part requirements; carrying out processing according to the optimal initial process parameters, and monitoring a processing material in real time through a sensor; if machining defects are monitored, an AI model is adopted to calculate and adjust technological parameters, and meanwhile, local repair is carried out on the detected defects; after printing of each layer is completed, the technological parameter database is updated, and technological parameters of subsequent layers are optimized until the machining process is finished; in the printing process, once defects are monitored, the AI model can quickly calculate and adjust process parameters, manual intervention is not needed, and the time for finding and solving problems is greatly shortened; meanwhile, the reinforcement learning algorithm can continuously learn and optimize a process parameter adjustment strategy, so that adjustment is more accurate and efficient, and repeated printing and repair time caused by unreasonable parameters are reduced.

High speed, accurate, scalable, and dimension-insensitive additive manufacturing of a Three-Dimensional (3D) object may use incrementally solidifying light-sensitive resin layers. A new layer is formed by supplying the resin liquid via a cavity in the formed 3D object, and curing the supplied resin by a focused light beam, such as a laser beam. The added layers are formed by supplying, 2024 / 184876 using a pump, the light-cured resin fluid to one or more bottom openings to be output from the top opening (or to multiple openings) via a vertical cavity (or multiple cavities) of the 3D object. The curing is by focusing a light beam to the area of the resin output from the top opening, while keeping the top opening non-cured, so that resin can be passed via the cavity. Such 3D printing may be directly applied to any surface, such as a floor, wall, wing structure, or machined part.

The application discloses a kind of short-range extrusion device and working method for realizing multicolor mixing, solve the printing precision of prior art long-range feeding printing device, the movement precision of short-range feeding printing device is low, with the beneficial effect of improving printing precision, specific scheme is as follows: a kind of short-range extrusion device for realizing multicolor mixing, including driving module, feeding extrusion module, color mixing proportion control module and mixed extrusion module connected in sequence, power assembly is provided with multiple output shafts, each output shaft is respectively matched with corresponding feeding component, feeding extrusion module includes feeding fixed seat, feeding fixed seat supports tensioning mechanism, the clamping force between feeding component and tensioning mechanism is adjustable, multiple coaxial baffles are arranged between color mixing proportion control module and mixed extrusion module, the baffle is provided with the shielding groove that can be communicated with melt cavity, the baffle can be rotated so that the shielding groove shields part of melt cavity to realize flow regulation.

The invention discloses a preparation method of an environment-friendly 3D printing three-dimensional surface floor, which comprises the following steps: S1, drawing a plane drawing of the floor, generating a 3D model of the floor by using a computer, and obtaining all layered structures and arrangement modes for forming the floor; and S2, raw materials for preparing the floor are prepared according to the 3D model of the floor in the S1, the raw materials are conveyed into a 3D printer for 3D printing, and all layered structures for the floor are printed. Through a sustainable raw material system, a formaldehyde-free laminating process, high-precision 3D printing texture forming, a three-layer environment-friendly protection layer, a bio-based edge sealing technology and an internet-of-things intelligent production system, production energy consumption is reduced by 40%, waste is reduced by 50%, closed-loop recovery is achieved, meanwhile, the international environment protection certification is met, the production efficiency is improved by 30%, and the production cost is reduced. And a full-chain green manufacturing scheme for synergistically improving the environmental protection performance, the production efficiency and the product quality is formed, and the double-carbon target requirement is met.

A method of shaping a shaping material, the shaping material including a powder of a fluororesin, the powder of the fluororesin having a static bulk density of 0.3 g / ml or more and 1.5 g / ml or less, and the powder of the fluororesin having a particle diameter of 10 μm or more and 300 μm or less in terms of D50.

To provide a technique capable of improving at least one of high accuracy and high speed in shaping a three dimensional shaped article.SOLUTION: The three-dimensional shaping apparatus includes a plasticizing unit that plasticizes a material to generate a shaping material, a nozzle that discharges the shaping material toward a stage, and a control unit that controls shaping of a three-dimensional shaped object by discharging the shaping material from the nozzle, wherein the plasticizing unit includes a drive motor, a screw, a barrel, a heating unit, and a position changing mechanism that changes a relative position between the screw and the barrel. The control unit causes the plasticizing unit to generate the shaping material by setting the distance between the screw and the barrel to a first distance by the position changing mechanism when the condition related to shaping is a first condition, and causes the plasticizing unit to generate the shaping material by setting the distance between the screw and the barrel to a second distance by the position changing mechanism when the condition is a second condition, and the second distance is larger than the first distance.SELECTED DRAWING: Figure 1

A dual printing head device with a tensioning device for continuous fiber-reinforced composites includes a printing support frame; a continuous fiber printing mechanism is provided on the printing support frame, and a filament extrusion mechanism is provided next to the continuous fiber printing mechanism; the filament extrusion mechanism is connected to the printing support frame through a dual nozzle switching mechanism; a fiber guide block is provided below the continuous fiber printing mechanism; a speed feedback follower wheel is provided next to the fiber guide block; the speed feedback follower wheel is connected to a filament feeding fiber force control encoder; and the dual nozzle switching mechanism includes a horizontal guide rail, a push plate mounting plate, a positioning guide groove, a filament fixing plate, and a rear mounting plate. The dual printing head device achieves free switching between dual heads during printing, ensuring the stability of feeding continuous fibers.

Provided are: a method and a device for determining the degree of deterioration of a shaping powder which enable shaped objects to be inhibited from decreasing in mechanical property or dimensional accuracy; a method and a device for producing a reclaimed shaping powder; and a method and a device for producing a three-dimensional shaped object.　A dispersion obtained by dispersing a shaping powder in a solvent is examined for 1H nucleus spin-spin relaxation time T2 using a pulsed NMR device. The specific surface area of the shaping powder is calculated on the basis of the 1H nucleus spin-spin relaxation time T2 of the dispersion and the 1H nucleus spin-spin relaxation time T2 of the solvent. The specific surface area of a shaping powder is apparently increased or reduced by preheating within a powder bed or by heat due to irradiation with laser light or an electron beam. The specific surface area of the shaping powder can hence be used as an index to the degree of deterioration of the shaping powder.

In some examples, an apparatus (100) can include a syringe body (101) including an electrical interface (415) at a side surface of the syringe body, an interface (613) at an end of the syringe body including an output at a distal surface of the syringe body, a print material particles reservoir located in the syringe body, and a structure (106) to adapt a volume of the print material particles reservoir to move print material particles out of the print material particles reservoir through the output, where in response to the volume adapting structure moving from a first position to a second position, a signal is transmitted by the electrical interface..

A method for manufacturing a graphene-incorporated UHMWPE structure, the method comprising the step of i. providing a build chamber having a vertically movable platform defining a build plate, on which SLS In a 3D printing process, powder material may be sintered layer by layer, and the method further includes: ii. preheating a build chamber; iii. reducing the pressure in the build chamber and / or supplying an inert gas into the build chamber; iv. depositing a UHMWPE powder layer on a build plate to define a print bed; v. exposing a selected area of ​​the UHMWPE powder layer to at least one first laser light source to create a sintered region of the UHMWPE powder layer; vi. exposing a selected area of ​​the UHMWPE powder sintered region to at least one second laser light source to induce graphene formation derived from the UHMWPE powder; vii. lowering the platform by one step corresponding to the thickness of the UHMWPE powder layer and depositing a further UHMWPE powder layer thereon; and viii. repeating steps (v) to (vii) until the structure is complete.

The application discloses a powder stirring and conveying mechanism and an additive manufacturing device. The powder stirring and conveying mechanism comprises a stirring cavity, a stirrer which is at least partially located in the stirring cavity and can be driven to rotate in a forward direction and a reverse direction, the stirrer comprising a main shaft and a plurality of stirring blades fixed on the main shaft, a powder supply plate which is rotatably arranged in the stirring cavity and comprises a main body capable of supporting powder and a plurality of mounting arms extending from the main body, the plurality of mounting arms being rotatably arranged on the main shaft, and the stirrer is configured to contact the powder supply plate from one side of the powder supply plate and push the powder supply plate to rotate in the forward direction in the stirring cavity when rotating in the forward direction, and contact the powder supply plate from the other side of the powder supply plate and push the powder supply plate to rotate in the reverse direction in the stirring cavity when rotating in the reverse direction. The application can facilitate daily maintenance of the mechanism by arranging the stirrer and the powder supply plate in a split manner, and the stirrer can be designed to have a larger swing range as required.

The present disclosure provides a filament replacement mechanism for a 3D printer and a 3D printing system. The filament replacement mechanism includes: a support; a filament guide unit disposed on the support and including a plurality of secondary filament guide tubes and a filament guide opening connecting with the plurality of secondary filament guide tubes, where the filament guide opening is configured to be jointed with a main filament guide tube of the 3D printer; and a plurality of filament replacement units disposed on the support. According to the present disclosure, a variety of filaments can be automatically provided for the 3D printer according to printing needs, and the replacement of filament spools is also facilitated.

The invention provides a wide aerosol jet printing system and method for high-throughput preparation of extremely low aspect ratio films. The system is composed of a high-throughput feeding module, a wide aerosol spray head, a visual module, a curing module, a motion platform and an industrial personal computer. Wherein the wide aerosol spray head adopts a flat outlet structure, limited expansion of aerosol micro-droplet cloud in the long-axis direction and focusing collimation of aerosol micro-droplet cloud in the short-axis direction are realized through coordinated regulation and control of carrier gas and sheath gas, and wide aerosol jet flow with specific width and stable collimation is generated, so that the single-channel deposition efficiency is remarkably improved. A staggered deposition strategy based on deposition section characteristics is further introduced, in-plane structure and functional anisotropy generated in the expansion manufacturing process is effectively inhibited, and a technical basis is provided for application of a high-performance thin film in the fields of flexible electronics, biosensing, energy devices and the like.

A print engine of an additive manufacturing system includes a printing station having a printing bed, a powder dispenser, and first and second powder holding chambers. The first powder nozzle and the second powder nozzle are connected to the first powder holding chamber and the second powder holding chamber, respectively. At least one vibrating element is attached to the printing bed, the powder spreader, the first powder holding chamber and the second powder holding chamber, and at least one of the first powder nozzle and the second powder nozzle. In one embodiment, a laser capable of directing a two-dimensional laser image against a printing bed is provided. In another embodiment, the sizes of the powders held in the respective first and second powder holding chambers are different.

The present invention includes a cartridge for printing one or more three-dimensional objects, the cartridge being configured to contain a volume of a photopolymerizable composition, the cartridge including side walls attached to a bottom wall to define a volume space for containing the volume, the cartridge being configured for including one or more printing zones, wherein a printing zone is sized to facilitate being irradiated by one or more, preferably at least two, excitation light projections to at least partially form a three- dimensional printed object within the volume of photopolymerizable composition in the printing zone. Systems and methods including a cartridge described herein are also disclosed.

The powder supply device (2) comprises a powder feeding part (21), and the powder feeding part (21) is provided with at least one material opening (216) connected with a powder supply connector; the dispersing part (22) is connected with the powder feeding part (21), and a uniform flow guide belt (222) for uniformly conveying powder flow is arranged in the dispersing part (22); the vibration part (23) is arranged at one end of the powder feeding part (21) and is used for providing vibration force acting on the powder feeding part (21), so that the powder feeding part (21) uniformly conveys powder flow through the dispersion part (22); and the material level detection part (24) is at least partially inserted into the powder feeding part (21) and is used for detecting the amount of powder in the powder feeding part (21). Under the action of vibration, a layer of uniform powder flow can be formed in the dispersing part (22), and powder is uniformly conveyed to a designated position, so that continuous and stable conveying of powder materials is realized, and the vibration frequency and amplitude can be adjusted according to different material properties to achieve a better conveying effect.

A three-dimensional (3D) object production system and methods for 3D printing reactive components to form a thermoset product. The disclosure relates to Use of a 3D printer having a controller comprising one or more processors to print a 3D object. The disclosure also provides a 3D object production system and methods for 3D printing comprising adjusting one or more parameters of an at least one actuator to produce a 3D object based on a reaction rate between reactive components.

This application provides a powder spreading device for additive manufacturing equipment, including a powder spreading arm movable along the powder spreading direction, a support base connected to the powder spreading arm, a powder spreading component mounted on the support base for uniformly spreading powder on a working surface to form a powder layer under the drive of the powder spreading arm, a vibration component mounted on the support base for applying vibration along the powder spreading direction during the powder spreading process to act on the powder layer, and a vibration limiting part connected to the support base and the powder spreading arm respectively, wherein the vibration limiting part is used to limit the vibration of the vibration component in the vertical direction.

The present application provides a three-dimensional printing rotary filament spool holder shaft, a three-dimensional printing filament spool holder, and a three-dimensional printer, comprising a fixed tube and a sleeve assembly sleeved outside the fixed tube and being capable of rotating relative to the fixed tube. The sleeve assembly is elastically connected to the fixed tube through an elastic member, the relative rotation between the sleeve assembly and the fixed tube causes the elastic member to generate elastic deformation, and the sleeve assembly is used for being sleeved in a three-dimensional printing filament spool. According to the present application, the functions of convenient mounting of a three-dimensional printing filament spool and rewinding of the filament in the filament spool can be realized, the filament is prevented from winding, and the structure is simple.

The invention relates to an apparatus and method for producing an object by means of additive manufacturing. The apparatus comprises a process chamber for receiving a bath of material which can be solidified. The apparatus further comprises a structure for positioning the object in relation to the surface level of the bath of material. The apparatus also comprises a solidifying device for solidifying a layer of the material on the surface. Further, the apparatus comprises an extraction device fluidly connected to the process chamber and arranged for extracting material out of the process chamber. Moreover, the apparatus comprises blowing means for inducing a gaseous flow in the process chamber affecting the material to be extracted. The blowing means comprise a plurality of blow nozzles fluidly connected to the process chamber and directed in a plurality of different directions.

Filament resistance detection device for a 3D printer (200), comprising: an extrusion assembly (202) provided with an extrusion mechanism (110), wherein the extrusion mechanism (110) is configured to drive a filament to be fed to the hotend (900);a feed assembly (203) which is provided with a feed channel (210), wherein a feed inlet of the feed channel (210) is configured to receive a filament from a feed device (100), the filament is fed from the feed device (100) from a feed opening (700) of the feed device (100) into the feed inlet of the feed channel (210), a filament tube (600) is provided between the feed opening (700) of the feed device (100) and the feed inlet of the feed channel (210), such that the length of a part of the filament between the feed opening (700) of the feed device (100) and the feed inlet of the feed channel (210) corresponds to the length of the filament tube (600);an elastic element (300), wherein one end of the elastic element (300) is connected to the extrusion assembly (202) and the other end is connected to the feed assembly (203), the elastic element (300) being configured to prevent the extrusion assembly (202) from approaching the feed assembly (203) in the direction of the filament in the feed channel (210), thus shortening the relative distance between the feed assembly (203) and the extrusion assembly (202); a trigger element (400) being arranged at one end of the extrusion assembly (202) and the feed assembly (203); a detection element (500) being arranged at the other end of the extrusion assembly (202) and the feed assembly (203) and being configured to shorten the relative distance between the extrusion assembly (202) and the Feed assembly (203) or a change in the relative distance is detected by detecting a relative distance to the trigger element (400).

This invention relates to the field of additive manufacturing technology and discloses a nozzle suitable for additive manufacturing of continuous fiber reinforced composite materials. The nozzle includes a main body and a stirring mechanism installed at the bottom of the main body. During operation, the stirring mechanism reduces the risk of material carbonization due to excessively high nozzle temperature. In this invention, the openings of the rotating plate and the stirring plate are staggered, causing softened material to accumulate on the top of the stirring plate. When the accumulated material exceeds the unopened portion of the stirring plate, it pushes the mixing plate to rotate. This rotation mixes the internal and external materials, reducing nozzle clogging caused by overheating and material carbonization during prolonged operation of the additive manufacturing machine. This improves the smoothness of material output from the nozzle during additive manufacturing.

A recoater supplies a predetermined amount of powder and spreads the supplied powder across a powder bed. The recoater includes a main shaft, a moving mechanism, and a powder guiding part. The main shaft rotates about an axis parallel to a surface of the powder bed. The moving mechanism moves a main shaft in a moving direction perpendicular to the main shaft and parallel to the surface of the powder bed. The powder guiding part is disposed around the main shaft along a predetermined inclination angle relative to the moving direction.

The invention relates to an apparatus for producing an object by means of additive manufacturing, comprising: - a process chamber for receiving a bath of material which can be solidified, wherein a surface level of the bath of material defines an object working area; - a support for positioning the object in relation to the surface level of the bath of material; - a plurality of solidifying devices, each arranged for solidifying a selective part of the material, wherein each of the plurality of solidifying devices is arranged for being able to operate in at least substantially the entire object working area; and - control means arranged for individually controlling the plurality of solidifying devices, wherein the control means are at least arranged for simultaneously operating the plurality of solidifying devices in different parts of the object working area and the invention reltes also to the corresponding method.

The invention belongs to the technical field of additive manufacturing, and particularly discloses an aerosol jet printing precision regulation and control device and method, and the device comprises a nozzle which is internally provided with a nozzle inner flow channel for a medium to flow, and the nozzle inner flow channel is provided with a nozzle outlet at the bottom of the nozzle; the airflow auxiliary focusing barrel is movably connected to the periphery of the nozzle in a sleeving mode in the axial direction of the nozzle, a first annular flow channel surrounding an outlet of the nozzle is arranged in the airflow auxiliary focusing barrel, the diameter of the first annular flow channel is gradually reduced downwards, an annular auxiliary gas outlet is formed in the bottom of the first annular flow channel, and auxiliary gas flowing out of the auxiliary gas outlet can be gathered under the outlet of the nozzle; aerosol beams ejected from the outlet of the nozzle are radially, annularly and directionally focused. The problems that the minimum line width is limited and the lead / pattern edge precision is poor due to the fact that aerosol beams diverge outside the nozzle in the radial direction at present can be solved, splashing of aerosol particles and satellite liquid drops in the jet printing process are restrained through the device, and therefore control over the aerosol jet printing precision is achieved.

The invention relates to a support system for a production system and to a workpiece holder (8) for use in the support system. The support system comprises a base support (6), which is designed to be secured in a process chamber of the production system and which comprises at least one positioning element, and a workpiece holder (8), on which a workpiece can be produced according to a production method having a step of depositing a particulate raw material in layers. The workpiece holder (8) has a lower face (12) and a construction side as the upper face (11) which lies substantially opposite the lower face. The workpiece support (8) has at least one first positioning device on the lower face (12) for releasably attaching to the base support (6) of the production device in a precise position. The at least one positioning element (10) and the at least one first positioning device (14) are designed in a complementary manner and form a pin / hole pair. At least one section (87) of the pin is made of a first material with a first thermal expansion coefficient, and a section of the hole, said section controlling the positional accuracy, is made of a second material with a second thermal expansion coefficient. In a first alternative, the second thermal expansion coefficient is lower than the first thermal expansion coefficient such that a clamping effect is produced between the pin and the surrounding hole in the event of a temperature increase of the support system during the production method as a result of the expansion of the section (87) of the pin. In a second alternative, the first thermal expansion coefficient is lower than the second thermal expansion coefficient such that a clamping effect is produced between the pin and the surrounding hole in the event of a temperature increase of the support system during the production method as a result of the expansion of the mounting section (28, 42, 91) of the hole. The invention additionally relates to a method for producing a workpiece.

Provided is a method of operation for an apparatus for the layerwise manufacture of 3D objects from particulate build material, wherein the apparatus comprises a build area comprised within a work surface and one or more heat sources configured to heat build material; the method comprising two or more operational cycles of a warm up phase, the first operational cycle starting from an ambient thermal state, followed by a build phase to manufacture one or more objects, followed by a cooling phase, wherein the cooling phase comprises removing a plurality of warm up layers and build layers from the apparatus; wherein the warm up phase and the build phase each comprise a layer cycle of: (a) dosing an amount of build material to the work surface; (b) distributing at least a layer portion of the dosed amount over the support or build area so as to form a layer, each layer surface forming a new build area; (c) heating, at one or both of steps (a) and (b), the dosed amount using the one or more heat sources; (d) monitoring at one or more of steps (a) to (c) a temperature of the build material and determining a thermal state based on the monitored temperature; wherein the build phase further comprises at step (c) a step of selectively melting a layer-specific region defined within the build area to form a cross section of the one of more objects, and wherein the steps (a) to (d) are repeated to form a plurality of layers each until the warm up phase and the build phase are complete; wherein the operational cycle comprises: before progressing to the build phase, achieving over the plurality of warm up layers a target steady thermal state as determined from the measured thermal state; maintaining the target steady thermal state over the plurality of build layers; exiting the target steady thermal state to commence the cooling phase over which over which a reduced thermal state is achieved, wherein the reduced thermal state is above the ambient thermal state; and determining one or more properties of the further warm up phase of the further operational cycle based on the reduced thermal state of the preceding cooling phase, such that a duration of the further warm up phase is shorter than a duration of the warm up phase of a preceding operational cycle.

A system (10) is disclosed for additively manufacturing a composite structure (12). The system may include a support (14), and a print head (16) operatively connected to and moveable by the support. The print head may include a supply of continuous reinforcement (19), an outlet (54) configured to discharge the continuous reinforcement, and a tensioning module (48) disposed between the supply and outlet. The tensioning module may be configured to generate a signal indicative of at least one of a tension in the continuous reinforcement and a position of a tensioning module. The system may also include a processor (20) programmed to selectively cause the supply to dispense the continuous reinforcement based on the signal.