910results about "Manufacturing recycling" patented technology

Systems and methods for processing additively manufactured objects are provided. In some embodiments, a method includes receiving one or more additively manufactured objects that are at least partially covered with a precursor material, cooling the one or more additively manufactured objects and the precursor material to a target temperature, and removing at least some of the precursor material from the one or more additively manufactured objects via application of mechanical force.

Examples of methods are described. In some examples, a method includes determining, using a variational autoencoder model, a latent space representation based on a three-dimensional (3D) input. In some examples, the 3D input represents a build of manufacturing powder. In some examples, the method includes predicting manufacturing powder degradation based on the latent space representation.

The invention belongs to the technical field of 3D printing, and particularly relates to a 3D printing electric heating platform and a 3D printer, the 3D printing electric heating platform comprises a support and a platform main body, the platform main body is provided with an electric heating unit, and the platform main body further comprises a preheating auxiliary mechanism; the preheating auxiliary mechanism comprises a plurality of gas storage chambers rotationally arranged on the support; the piston piece is movably inserted into the air storage chamber; the rotating shaft is rotationally arranged at the opening; the heat insulation plate and the heat conduction plate are fixedly connected to the rotating shaft; the preheating auxiliary mechanism is arranged, the air storage chamber is used for collecting heat dissipated in the cooling process of the platform body, the piston piece is matched, stored hot air is sprayed out to the platform body for preheating, the preheating time is shortened, the preheating efficiency is improved, the situation that heat energy is wasted in vain is improved, the working time is shortened, and the energy consumption is reduced. And the use cost is saved.

The invention provides a circulating ink supply control method and a circulating ink supply control system, which are applied to a control unit in the circulating ink supply system. The method comprises the following steps: acquiring liquid level information detected by each liquid level sensor in an ink inlet unit and liquid level information detected by each liquid level sensor in an ink return unit in real time; according to the liquid level information detected by each sensor in the first sensor group, whether the circulating ink supply system is in a normal state is determined; if yes, the circulating pump or the air pump is controlled to conduct ink supply circulation according to the liquid level information detected by all the sensors in the second sensor set. The running speed of the circulating pump or the air pump is controlled through the liquid level information detected by all the liquid level sensors, it is guaranteed that the air pressure in the circulating ink supply system is stable, and therefore the ink supply amount of the spray head is stable, and the printing effect of a final model is guaranteed.

The invention discloses eyelash cutting equipment and a manufacturing process, and relates to the field of eyelash processing technology.The eyelash cutting equipment comprises a rack, a printing platform, a laser printer and a feeding wheel, the feeding wheel, the printing platform and the laser printer are all located at the upper end of the rack, and the printing platform is located between the laser printer and the rack; a shaping device is arranged at the upper end of the rack and used for shaping materials, a separating device is arranged at the upper end of the rack and used for separating the shaped materials, a supporting plate is arranged on the side, away from the feeding wheel, of the printing platform, the supporting plate is arranged in the length direction of the printing platform, and a residual piece collecting roll and a base plate collecting roll are rotationally connected to the supporting plate. The residual piece receiving roll and the base plate receiving roll are both arranged perpendicular to the supporting plate, the residual piece receiving roll is located between the base plate receiving roll and the feeding wheel, the outer sides of the residual piece receiving roll and the base plate receiving roll are provided with adhesive tapes easy to tear in the axial direction, and a driving device is arranged on the supporting plate. The eyelash production device has the effect of improving the eyelash production efficiency.

The invention relates to the technical field of 3D printing, in particular to an industrial mold 3D printer based on plastic powder slurry. The printer comprises a rack, a movable frame and a printer body, and the printer body comprises a body, a flow guide pipe, a first heater, a cooling fan, a quantity adjusting assembly and a back suction assembly. According to the device, when the quantity adjusting rod drives the quantity adjusting head to be downwards inserted into the communicating position of the heating cavity and the nozzle to plug the nozzle, the quantity adjusting rod further drives the piston plate to move in the suction cavity, the piston plate firstly moves rightwards to expand the containing volume of the suction cavity to form negative pressure, and then material consumables left in the end of the nozzle are sucked into the suction cavity through the suction pipe; and then the piston plate moves leftwards to reset in the suction cavity to press the material consumables in the suction cavity into the flow dividing cavity through the one-way valve, so that the phenomenon that part of the material consumables left in the spraying end part of the nozzle flow out of the drawn wire to form overflow on the surface of the industrial mold is avoided, and the printing processing quality of the industrial mold is ensured.

A powder spreading device includes a device body, an adjustment assembly, and a dust removing mechanism. The adjustment assembly is provided on the device body. The adjustment assembly is configured to orient to a powder spreading surface. A first end of the dust removing mechanism is provided on the device body. The first end of the dust removing mechanism is covered over the adjustment assembly. A second end of the dust removing mechanism is communicated to the first end of the dust removing mechanism. The second end of the dust removing mechanism is configured to extend to the device body. A three-dimensional (3D) printing device and a 3D printing system are further provided.

The invention relates to the technical field of powder recovery, in particular to a powder recovery system. The method can be implemented by the following steps: acquiring powder stress data of a current classification screen for screening and recycling the 3D printing powder at each historical moment in a historical recycling time period and powder stress data of the current classification screen at the current moment; determining the initial screening efficiency at each moment; determining the current relative screening degree at the current moment; the current screening fluctuation degree at the current moment is determined according to the difference between the powder stress data at the current moment and the powder stress data at the historical moment within the historical recovery time period; and a current power correction factor is determined, and based on the current power correction factor, the operation power of a servo motor used for controlling the current grading screen to shake at the current moment is adjusted. According to the powder screening and recycling device, powder screening and recycling are achieved, and therefore the powder screening and recycling efficiency is improved.

The present disclosure provides a system and method for three-dimensional (3D) printing. The system comprises a post-treatment device. The post-treatment device comprises: a material receiving mechanism, which comprises a material receiving body, the material receiving body being configured to bear a 3D-printed object having a redundant printing material; and a driving mechanism, which is configured to allow the material receiving mechanism to rotate from a first state to a second state, so that the redundant printing material drips off of the 3D-printed object, wherein the 3D-printed object has at least two different inclination angles. The technical solution of the present disclosure effectively solves the problem in the prior art of methods for separating a redundant printing material from a 3D-printed object having a poor separation effect and low efficiency.

Disclosed are techniques for converting polymeric powder that has been discarded from a powder bed fusion process into a raw material suitable for an alternative form of additive manufacturing involving extruded deposition. As applied to polyamide powders, the disclosed methods improve suitability of the material for an extrusion process by adding another polyamide species in which the spacings between functional groups on the polymer chain do not follow a repeating pattern. In at least one preferred embodiment, a fibrous filler is also added to further improve dimensional compliance and stability in parts formed by depositing extruded beads of the inventive composition.

The present invention relates to a polymer powder for the manufacture of articles by 3D printing, in particular by sintering, comprising a thermoplastic polymer, antioxidants, and a particular metal oxide, metal hydroxide and / or hydrotalcite, having improved thermal stability, improved recyclability and improved consistency of mechanical properties of the sintered parts.The invention also relates to a process for preparing this powder and to the use thereof in a process for manufacturing by sintering, and to the articles manufactured from said powder.

Embodiments of the present disclosure provide an apparatus, a system, and a method. The apparatus is configured to depowder and extract one or more printed parts prepared by a three-dimensional (3D) printer. The apparatus includes an elevated frame, a perforated plate, a movable unit, a lifting-lowering mechanism, a depowdering unit, and at least one gripper. The elevated frame is configured to receive fully raised at least one 3D printed layer and partially raised at least one powder layer. The movable unit is engaged to a front end portion of the perforated plate and adapted to move longitudinally along with the perforated plate, within the elevated frame. A connecting member of the movable unit is adapted to be positioned in front of the front end portion. At least a portion of the connecting member transversely slides within the partially raised at least one powder layer.

A method for forming an abrasive article via an additive manufacturing technique including forming a layer of powder material comprising a precursor bond material and abrasive particles, compacting at least a portion of the layer to form a compacted layer, binding at least a portion of the compacted layer, and repeating the steps of forming, compacting, and binding to form a green body abrasive article.

Systems and methods for manufacturing objects are provided herein. In some embodiments, a method for producing an additively manufactured object includes applying energy to a curable material according to a set of print parameters to form a cured material layer on a build platform or on an object on the build platform. The method can also include conveying remaining material away from the build platform. The method can further include detecting, via one or more sensors, that the remaining material includes a portion of the cured material layer that has separated from the build platform or from the object. The method can subsequently include determining an adjusted set of print parameters configured to improve adhesion of cured material to the build platform or to the object.

The invention provides three-dimensional printing equipment and a three-dimensional printing method. The three-dimensional printing equipment comprises a light-permeable material containing mechanism and a printing mechanism, wherein the light-permeable material containing mechanism is provided with a bearing area configured to bear a printing material; a feeding mechanism including a first channel configured to supply a first material and a second channel configured to supply a second material different from the first material; the driving mechanism is configured to move at least one of the material containing mechanism and the material supply mechanism; an optical mechanism configured to project light to the bearing area based on the pattern to cure the first material and the second material; the forming platform mechanism is configured to adhere to the curing layer and can carry the adhered curing layer to be separated from the material containing mechanism, and the curing layer comprises at least one of a part formed by the first material, a part formed by the second material and a part formed by the mixture.

The invention relates to a powder-conveying system for conveying raw-material powder to an installation for manufacturing a three-dimensional workpiece by irradiating layers of the raw-material powder with electromagnetic radiation or particle radiation. The powder-conveying system comprises: a conveyor line which is designed to convey a gas flow, at least along sections, and a powder flow driven by the gas flow, at least along sections; and a conveyor device which is designed to convey the gas flow through the conveyor line. The powder-conveying system also comprises: a first tank, which is connected to the conveyor line, for supplying the installation with powder for an additive manufacturing process; and at least one overflow container, which is connected to the conveyor line, for receiving excess powder accumulating during the additive manufacturing process. The powder-conveying system also comprises: a buffer container which is connected to the conveyor line for supplying a sieve device with powder to be sieved; and the sieve device for sieving the powder to be sieved and for dispensing sieved powder. The powder-conveying system comprises an interface for an external tank, which interface is connected to the conveyor line, for introducing fresh or impure powder into the powder-conveying system. The powder-conveying system also comprises a controller for controlling the powder-conveying system, so that the system carries out at least one of the following conveying processes: a. conveying the sieved powder into the first tank; b. conveying powder from the at least one overflow container into the buffer container; and c. conveying powder from the external tank into the buffer container.

The invention provides a three-dimensional printing method and three-dimensional printing equipment. The three-dimensional printing method comprises the steps that a first material is supplied to a bearing area of a light-permeable material containing mechanism of the three-dimensional printing equipment through a first channel of a material supply mechanism of the three-dimensional printing equipment; a second material different from the first material is supplied to the bearing area of the material containing mechanism through a second channel of the material supply mechanism; a forming platform mechanism of the three-dimensional printing equipment is moved, so that the forming platform mechanism makes contact with the first material and the second material in the bearing area; light rays are projected to the bearing area through an optical mechanism of the three-dimensional printing equipment, so that the first material and the second material are cured, and a curing layer adhering to the forming platform mechanism is formed; and the forming platform mechanism is moved away from the material containing mechanism, so that the curing layer is separated from the material containing mechanism.

A system and method are disclosed for removal of unwanted powder material from additively manufactured objects. The system and method include a transfer channel located in a housing of the system. The transfer channel includes at least a loading or receiving area and a processing area. An exchangeable printer frame used in an additive manufacturing printer contains additively manufactured objects and unwanted powder material. The exchangeable printer frame is received in the loading area. The additively manufactured objects and unwanted powder material are removed from the exchangeable printer frame and conveyed along the transfer channel onto a platform in the processing area. The unwanted powder material is removed by vibratory action and falls through openings in the platform. The now depowdered additively manufactured objects are then removed from the processing area.

The application provides a post-processing device for 3D printing objects, a 3D printing system and a method, the post-processing device comprising a receiving mechanism for carrying a 3D printing object with excess printing material; a movable mechanism for changing the dripping position of the 3D printing object to make the excess printing material drip from the 3D printing object; wherein the 3D printing object has at least two different inclination angles during the dripping position change. The application changes the dripping position of the 3D printing object, changes the inclination angle of the 3D printing object, separates the excess resin material on the 3D printing object, and improves the efficiency of separating the excess resin.

The present invention includes methods for reducing photoexcitation of a photoswitchable photoinitiator in volumetric printing including a volume of a photohardenable composition at locations in the volume at which intersection of two wavelengths does not occur; methods of three-dimensional (3D) printing including dual-wavelength photoexcitation of a photohardenable composition included in a volume, the method including photoexcitation by a modified or controllably-sized light sheet including a first wavelength and an optical projection including a second wavelength; and methods for extending the reuse-printing lifetime of a photohardenable composition including a photoswitchable photoinitiator. Preferably the photohardenable composition includes the dual-wavelength photoinitiator and a photohardenable resin component. The present invention also includes a photohardenable composition including a photoswitchable photoinitiator with an improved reuse-printing lifetime.

The 3D printing device comprises a working box, a powder spreading device, a powder adding mechanism and a first powder receiving mechanism, the powder spreading device is movably arranged on the working box, the first powder receiving mechanism is located on the side, perpendicular to the moving direction of the powder spreading device, of the working box, and the first powder receiving mechanism comprises a first guide rail and a first powder receiving bin; the first powder receiving bin is movably arranged on the first guide rail, the first powder receiving bin has three working states, when the first powder receiving bin is in the first working state, the side edge of an opening of the first powder receiving bin is in sealing fit with the side edge of the working box, and the opening of the first powder receiving bin is not higher than the side edge of the working box; when the first powder receiving bin is in the second working state, the first powder receiving bin is matched and communicated with the powder spreading device; and when the first powder receiving bin is in the third working state, the first powder receiving bin is matched and communicated with the powder adding mechanism. According to the scheme, the problem that a large amount of powder is wasted easily in the powder spreading process of each layer can be solved.

The invention relates to a bulk-material conveying system, in particular for conveying raw-material powder in an installation for producing a three-dimensional workpiece by irradiating layers of the raw-material powder with electromagnetic radiation or particle radiation. The bulk-material conveying system comprises a conveying pipe designed to convey a gas flow and, at least in sections, a bulk-material flow driven by the gas flow, and a metering device designed to supply the gas flow with a predetermined amount of bulk material per unit of time. The amount is determined by a control value fed to the metering device. The bulk-material conveying system also comprises a conveyor device designed to convey the gas flow through the conveying pipe, and at least one measuring device for measuring at least one parameter of the gas flow. The bulk-material conveying system also comprises a control device designed to determine a gas density of the gas flow on the basis of the measured at least one parameter of the gas flow, to determine a bulk-material mass flow of the bulk-material flow on the basis of the control value fed to the metering device, to determine a target speed of the gas flow on the basis of the gas density and on the basis of the bulk-material mass flow, and to control the conveyor device to convey the gas flow at the determined target speed.

A system includes a powder reuse system (PRS) executable via a processor and configured to receive one or more inputs for a build of a first machine component in a sintering system. The PRS is further configured to retrieve a model configured to model a reuse of a sintering powder, and to derive a time during which a surplus unsintered powder left after printing the machine component via the sintering system using the sintering powder may be reused to build a second machine component by applying the one or more inputs to the model.

Additive manufacturing systems and associated methods are disclosed herein. In some embodiments, the additive manufacturing includes a build chamber that has a central portion and a peripheral portion, a support platform positioned in the central portion and a recoater arm movable in a lateral direction over the support platform. While moving, the recoater arm spreads a powder over the central portion during a build. The additive manufacturing system also includes a powder recycling system positioned to redirect excess amounts of the powder during the build. For example, the powder recycling system can include a powder receptacle positioned the second region of the peripheral portion and a recycling element positioned at least partially in the powder receptacle. The recycling element is movable between a first position abutting an overflow space in the powder receptacle to receive the excess powder and a second position closer to the central portion.

The invention discloses a centrifugal single-material photocuring 3D printing method and equipment. The equipment comprises a printer body, a rotating motor, a cleaning tank and a post-curing heat treatment tank; the rotating motor is fixedly connected with a printing platform of the printer body and used for driving the printing platform to rotate. A resin tank of the printer body is detachably arranged below the printing platform; the cleaning tank can be arranged at the station of the resin tank, so that after the rotary motor drives the printing platform to rotate to complete centrifugal operation and remove the resin tank, the cleaning tank can be arranged at the station, and the printing equipment executes cleaning operation that the cleaning tank is fixed and the printing platform and a printed piece rotate in cleaning liquid; the post-curing heat treatment tank is configured to be arranged at the station so that after the cleaning operation is completed and the cleaning tank is removed, the post-curing heat treatment tank can be arranged at the station for the printing equipment to execute post-curing heat treatment in which the post-curing heat treatment tank is fixed and the printing platform and the printed piece rotate in the post-curing heat treatment tank.

A build head for a powder bed fusion (PBF) additive manufacturing system includes a powder delivery mechanism configured to deliver build powder to a build area of an annular build plate to form a build powder bed while the annular build plate rotates when the PBF additive manufacturing system is in operation. A recoater is configured to provide even distribution of the build powder in the build powder bed and an optical array is positioned over the build area on the build plate to project energy onto the build powder bed to form a melt pool in the build powder bed.

The application describes a machine tool adapted and arranged to carry out removal and addition of material on a work piece located in a work station, the machine having a first head arranged to remove material from the work piece and at least a second head arranged to process the work piece, each of the first and second heads being arranged to be moveable in at least two axes and preferably in 3, 4 or 5 axes and wherein the machine is arranged to control an environment of the work station. The work station is at least partially sealable. The machine has a clean side and a dirty side. Novel processing heads particularly adapted for use in the new machine tool are disclosed. These may also be retrofitted to CNC machines. The novel heads include heads adapted to carry out two processes simultaneously. Heads adapted to carry out heat and pressure treatment are also disclosed. Use of the processing heads to carry out analysis in manufacturing steps is disclosed as is the provision and use of heads that can carry out analysis as well as processing.

A powder removal apparatus includes an extraction housing comprising a sidewall that is sized and configured to extend around a powder bed of a build module and a top wall that is sized and configured to extend between opposite sides of the sidewall and over the powder bed. The sidewall and top wall are configured to form a chamber portion of a turbulence chamber. The top wall has a vacuum exit opening that is configured to fluidly connect to a vacuum source. The sidewall has a plurality of sidewall inlet flow channels that extend from an inlet opening at an exterior side of the sidewall to an outlet opening at an interior side of the sidewall. A side exit channel is configured to extend along the top wall from a collector opening in communication with the chamber portion toward the vacuum exit opening.

The invention relates to a powder bed fusion additive manufacturing system (1) comprising a build chamber (2) extending along a vertical axis (Z) and a removable container (10) which can be inserted into the build chamber (2) in a manufacturing configuration and removed from the build chamber (2) in a powder removal configuration, the removable container (10) comprises a side wall (20) extending along a vertical axis (Z) and a bottom wall (30) movable within the side wall (20) along the vertical axis (Z), the bottom wall (30) comprising a perforated first wall (31) having a first aperture (33), the first aperture (33) being closed in a manufacturing configuration and opened in a depowdering configuration.

An automated de-powdering system comprises a sleeve alignable with at least a portion of a build chamber and at least one actuator actuatable with respect to a build plate to move at least a portion of an additive manufacturing build out of the build chamber and into the sleeve. At least one support assembly is couplable to the sleeve and includes at least one support member insertable through the sleeve and into the additive manufacturing build. At least one agitation mechanism is couplable to at least one of the at least one support assembly or the sleeve and is actuatable to at least partially convey the powder build material away from at least one object of the additive manufacturing build. The support member is positioned to support the object in an absence of the powder build material around the object.