Abstract: A 3D printer and method include a cartridge receiver to hold a material cartridge that accepts build material into the material cartridge from the 3D printer and makes build material available from the material cartridge. A first conveying system of the 3D printer transports build material for the 3D printing. A second conveying system of the 3D printer facilitates recovery of excess build material from the 3D printing.

Abstract: Example implementations relate to replaceable hoppers of a print apparatus. In some examples, a system may include a connection component integrated with a replaceable hopper. The connection component may include an input flow conduit positioned adjacent to and associated with an output flow conduit and an electrical connection.

Abstract: An additive manufacturing device for reducing vibrational sounds produced during an evacuation process includes a shaker connected to a build area of the additive manufacturing device, the shaker to vibrate the build area during the evacuation process to separate fused and non-fused build material of a cake and an exciting transducer to transmit a reducing signal during the evacuation process such that the reducing signal reduces vibrational sounds produced by the shaker before the vibrational sounds reaches a user.

Abstract: A three dimensional printing system, the system including: a printhead; and a removable tray comprising a reservoir, the tray located in a print bed of the three dimensional printing system such that liquid purged from the printhead is deposited in the reservoir, wherein prior to the system purging liquid from the printhead, the system confirms that the tray is in place using a sensor.

Abstract: In one example in accordance with the present disclosure, an additive manufacturing build unit is described. The additive manufacturing build unit includes a vibrating bed on which a volume of build material is to be disposed. The bed is to vibrate to remove excess build material. A non-vibrating frame of the build unit supports the vibrating bed. The build unit also includes a bed-frame interface to: couple the vibrating bed to the non-vibrating bed frame, and isolate vibrations to the vibrating bed. A flexible seal of the build unit is disposed between the vibrating bed and non-vibrating frame. The flexible seal prevents build material from contaminating an additive manufacturing system in which the additive manufacturing build unit is disposed and allows relative motion between the vibrating bed and the non-vibrating frame.

Abstract: A three-dimensional (3D) printer and method for feeding powder to a build platform of the 3D printer, Incidental powder lost from the build platform is collected and fed to the build platform.

Abstract: A device is provided for conveying additive manufacturing container/tray assemblies or additive manufacturing trays, the conveying device including at least two chambers for conveying an additive manufacturing container/tray assembly, each conveying chamber including at least one opening allowing the entry/exit of an additive manufacturing container/tray assembly, and each opening being provided with a door for closing the conveying chamber in a sealed manner.

Abstract: In some examples, a module of a three-dimensional (3D) printer can include a first linear actuator, a second linear actuator, and a tool to selectively engage a part and selectively disengage from the part, where the tool is connected to the first linear actuator and the second linear actuator.

Abstract: In an example, a method includes receiving, at a processor, object model data representing at least a portion of an object to be generated by an additive manufacturing apparatus by fusing build material. Using a processor and from the object model data, a property diffusion model for the object in object generation may be determined. Using a processor and based on the property diffusion model, a manufacturing boundary object shell around the object and encompassing an external volume may be determined. The shell may have a variable thickness determined so as to include build material for which, in generation of the object, the property modelled in the property diffusion model has a value which is predicted to conform to a predetermined parameter.

Abstract: According to one aspect, there is provided a method of forming a layer of build material on a build platform of a three-dimensional printing system. The method comprises obtaining characteristics of a build volume to be processed, determining characteristics of a volume of build material to be used to form the layer, forming an intermediate volume of build material having the determined characteristics, and spreading the intermediate volume of build material over the build platform to form the layer.

Abstract: Example systems relate to recoater movement. A non-transitory machine readable medium may contain instructions executable by a processor. The instructions may include instructions to change an action of a recoater in response to a determination that the recoater has reached a first location of a build area comprising build material. Instructions may further include instructions to lift the recoater in response to a determination that the recoater has reached a second location of the build area. Instructions may additionally include instructions to move the recoater over the second location at the lifted position, wherein the second location includes a build-up of the build material.

Abstract: Printers and associated printer maintenance methods and apparatus are disclosed. A printer including a work area; a temperature sensor to measure a first temperature value at a first region of the work area and a second temperature value at a second region of the work area; and a recoater to distribute a first amount of build material onto the first region and a second amount of the build material onto the second region in response to the first temperature value being a threshold different than the second temperature value.

Abstract: In some examples, an apparatus includes a plurality of conduits to transport a material of a three-dimensional (3D) printing system between locations in the 3D printing system. A sensor assembly detects a clogged condition of a first conduit of the plurality of conduits. A valve assembly connected to the plurality of conduits selectively controls flow of the material through the plurality of conduits, the valve assembly controllable to actuate from a first setting to a second setting responsive to the detected clogged condition.

Abstract: A method for fabricating three dimensional objects herein can include calibrating a system to detect a temperature component and a current component by operating a heating source with at least two different calibration voltages and monitoring a color temperature of the heating source and an optical power of the heating source at each of the at least two different calibration voltages. The method can also include performing a three dimensional printing operation while applying a fabrication voltage to the heating source and monitoring the fabrication voltage and a current of the heating source during the three dimensional printing operation. Furthermore, the method can include adjusting the fabrication voltage of the heating source in response to a change in a resistance of the heating source or a characteristic of the three dimensional object, wherein the fabrication voltage is adjusted based at least on the temperature component and the current component.

Abstract: According to examples, an apparatus may include forming components and a controller to control the forming components to fuse build material particles located in a selected area of a layer of build material particles forming a part section of a 3D object, in which the selected area is within and borders a selected boundary. The controller may also wait for a period of time to allow the part section to shrink to form a shrunken part section and, following the period of time, fuse build material particles located in a certain area around the shrunken part section, in which the certain area occupies a preset distance originating around the selected boundary of the layer of build material particles and extending toward an interior of the part section, and the preset distance corresponds to an amount of shrinkage predicted to occur in the part section during the period of time.

Abstract: In an example, a method includes receiving, at a processor, a plurality of property parameter sets representing attainable property combinations in additive manufacturing and being associated with print material description. A constraint of a first property of the property parameter sets may also be received and a hull of a property mapping resource for use in determining additive manufacturing instructions for generating an object in which the first property meets the received constraint may be determined.

Abstract: According to examples, an apparatus may include a printhead assembly containing a housing supporting a printhead. The printhead may have nozzles that are to fire droplets of a functional agent onto a layer of build material particles along respective flight paths to form sections of a 3D object from the build material particles, an array of light emission devices to direct respective light beams in the respective flight paths, and an array of photon detectors to detect respective light beams directed from a light source of the array of light emission devices, the light emission devices and the photon detectors being supported on the housing. The apparatus may also include a controller to determine whether any of the nozzles is operating improperly based upon whether the photon detectors detected the light beams and to output an instruction regarding an improperly operating nozzle in response to a determination that the nozzle is operating improperly.

Abstract: A system for three-dimensional forming of an object includes a set of functional elements, with each of the functional elements including a housing and a processor, memory, power supply, sensor, and wireless communication module each within the housing, a position module to determine an individual position of each of the functional elements, and a fuse module to determine instructions to fuse selective ones of the functional elements based on the individual position of each of the functional elements to form the object with the selective ones of the functional elements.

Abstract: According to examples, a three-dimensional (3D) fabrication system may include fabrication components and a controller. The controller may control the fabrication components to fabricate parts of a 3D object in a build envelope, the parts to be assembled together to form the object, and in which the parts are fabricated at locations corresponding to relative positions of the parts with respect to each other in the assembled object. The controller may also control the fabrication components to fabricate a cage around the parts in the build envelope.

Abstract: A method is disclosed for use in additively manufacturing a composite structure from reinforcements wetted with a matrix. The method may include slicing a virtual model of the composite structure into multiple slices that are adjacent to each other along a length direction of the composite structure and determining points of the reinforcements passing through each of the multiple slices. The method may further include clocking the points differently around each of the multiple slices and generating at least one tool path including a sequenced subset of the points. The method may additionally include causing an additive manufacturing machine to discharge the reinforcements along the at least one tool path.

Abstract: A manufacturing system and method combines additive material deposition at a coarse resolution with high speed subtractive material removal at part surfaces to maximize detail and dimensional accuracy. Additive and subtractive operations may be performed sequentially or in parallel. Model data is received and support model data for undercuts, overhangs, and constrained surfaces is generated. The model and support model data is partitioned into additive and subtractive layers. Additive toolpaths are generated for each of the additive layers and subtractive toolpaths are generated for each of the subtractive layers. The subtractive toolpaths from adjacent subtractive layers may be consolidated, and then scheduled using a spatial-temporal map to resolve dependencies on additive toolpaths. A hybrid manufacturing program including the additive and subtractive operations is output.

Abstract: In an example, a method includes receiving, at least one processor, object model data representing at least a portion of an object that is to be generated by an additive manufacturing apparatus by fusing build material within a fabrication chamber. An intended object placement location within the fabrication chamber may be determined, and a dimensional compensation to apply to the object model data may be determined using a mapping resource relating dimensional compensations to object placement locations. The determined dimensional compensation may be applied to the object model data to generate modified object model data using at least one processor.

Abstract: According to one aspect, embodiments of the invention provide a method of 3D printing, comprising depositing a model material in successive layers to form a part, the model material being a metal composite including greater than 50% by volume metal powder and less than 50% by volume a first removable binder, depositing the model material in successive layers to form a support structure adjacent the part, depositing a sinterable separation material between a surface of the part and a surface of the support structure, the sinterable separation material formed from 10-40% by volume ceramic powder and greater than 50% by volume a second removable binder, debinding the first removable binder of the model material and the second removable binder of the sinterable separation material, and sintering the part, the support structure, and the sinterable separation material at a temperature profile that sinters the model material and the sinterable separation material.

Abstract: The application discloses a hollowed-out printed object and a 3D printing support, a 3D printing support construction method and a 3D printing method of the hollowed-out printed object. At least one end of the 3D printing support of the hollowed-out printed object is connected to the hollowed-out printed object; the support includes a main body and a connecting portion connected to the hollowed-out printed object; a joint between at least part of the connecting portion and the hollowed-out printed object is located inside the hollowed-out printed object.

Abstract: A method and apparatus for making bags from a film that follows a film path through a bag machine includes an input section located on the film path, a sealing section located on the film path downstream of the input section, an output section located on the film path downstream of the sealing section, and a controller, connected to control the sealing section. The sealing section includes a sealer that includes a heater block and a manifold. There is an air flow path from the heater block to the manifold. Air is heated in the heater block in response to a control signal provided by the controller to the heater block. The heated air is provided through the air path to the manifold. A temperature sensor is disposed in at least one of the air path and the manifold.

Abstract: A method and apparatus for making bags from a film that follows a film path through a bag machine includes an input section located on the film path, a sealing section located on the film path downstream of the input section, an output section located on the film path downstream of the sealing section, and a controller, connected to control the sealing section. The sealing section includes a sealer that includes a heater block and a manifold. There is an air flow path from the heater block to the manifold. Air is heated in the heater block in response to a control signal provided by the controller to the heater block. The heated air is provided through the air path to the manifold. A temperature sensor is disposed in at least one of the air path and the manifold.

Abstract: A method for joining moulded parts by electromagnetic welding. A joining inductor is moved along contact surfaces of the moulded parts, generating an electromagnetic field in an induction-sensitive component of the moulded part(s) to heat a thermally activated coupling means of the moulded part(s) to above a melting temperature of the coupling means. The strength of the electromagnetic field suitable for joining is determined by previously moving a sensing inductor along the contact plane, generating a relatively weak electromagnetic field to slightly heat the thermally activated coupling means to a sensing temperature, measuring the field strength generated by the sensing inductor in the moulded part(s), determining a discrepancy between the measured field strength of the sensing inductor and the field strength suitable for joining, and adjusting the field strength suitable for joining to close the discrepancy. A device for carrying out the method.

Abstract: Systems and methods for developing a composite material are disclosed. The system can include a plurality of particles and a plurality of filaments. The plurality of particles can generate mechanical force in response to changing relative humidity, and the plurality of filaments can transfer the mechanical force throughout the composite material.

Abstract: A method for manufacturing a high-pressure tank including a liner and a fiber-reinforced resin layer, the fiber-reinforced resin layer having a first reinforcing layer covering an outer surface of the liner and a second reinforcing layer covering an outer surface of the first reinforcing layer includes: forming a cylinder member made of a fiber-reinforced resin and having fibers oriented in a circumferential direction of the cylinder member; forming two dome members made of the fiber-reinforced resin; forming a reinforcing body that is the first reinforcing layer by joining the cylinder member and the dome members; and forming on an outer surface of the reinforcing body the second reinforcing layer made of the fiber-reinforced resin and having fibers oriented across the dome members.

Abstract: The present disclosure provides an apparatus that includes a fiber gun. In an embodiment, the apparatus may controllably cut one or more fibers into one or more fiber segments. In an embodiment, the apparatus may controllably shape one or more fibers into different shapes (e.g., from loops into substantially straight fibers). In an embodiment, the apparatus may controllably position the one or more fiber segments onto a supporting member (e.g., a composite component). For example, the apparatus may include a robot that may controllably move the fiber gun relative to a supporting member and align the fiber gun such that the one or more fiber segments are controllably positioned on the supporting member. The apparatus may further include a controller that at least partially controls operation of the apparatus.

Abstract: A helical winding unit is provided with a frame member in which a plurality of nozzle attachment units are provided to be aligned in a circumferential direction about an axis of a liner; nozzle units that each have a guide body movable in a radial direction of the liner and rotatable about a rotating axis extending in the radial direction, and that are attachable to and detachable from the nozzle attachment units; a moving endless toothed annular body that transmits, commonly to one or more nozzle units attached to one or more nozzle attachment units, power for moving the guide body in the radial direction; and a rotating endless toothed annular body that transmits, commonly to one or more nozzle units attached to one or more nozzle attachment units, power for rotating the guide body about the rotating axis.

Abstract: A method is provided for treating a surface of a molded part produced in a 3D printing method. In the method, the molded part is introduced into a pressure-tight container (20), negative pressure, preferably a vacuum to a large extent, is generated in the container after introducing the molded part, a solvent is heated up to a specified solvent temperature, and the heated solvent is introduced from a solvent container (40) into the container under negative pressure. In such a method, the temperature of the molded part is lower than the solvent temperature, and the solvent is evaporated or is introduced as a vapor upon being introduced, the solvent vapor condensing on the surface of the molded part. Also provided is a device for carrying out the method.

Abstract: According to examples, an apparatus includes a processor and a memory on which is stored machine readable instructions. The instructions may cause the processor to identify an intended surface property level for a surface of a three-dimensional (3D) object, determine an amount of radiation to be applied as a flash of radiation onto the surface to obtain the intended surface property level, and output the determined amount of radiation to be applied as a flash of radiation, in which a radiation source is to flash apply the determined amount of radiation onto the surface of the 3D object.

Abstract: Provided are a resin laminated optical body, a light source unit, an optical unit, a light irradiation device, an image display device, and a method for manufacturing a resin laminated optical body that are novel and improved, by which an optical apparatus can be reduced in size, and the light emission quality can be improved. To achieve the above object, according to an aspect of the present invention, a resin laminated optical body is provided including an optical base material having a curved surface, and a resin layer provided on the curved surface of the optical base material, in which a light diffusing structure is formed in a surface of the resin layer.

Abstract: An optical film includes: a fine recess-protrusion layer having a recess-protrusion pattern, formed on a substrate film; and a fine structure body formed on the fine recess-protrusion layer. The optical film is pressed by a light guide transparent to light against one surface of an adherend applied with a photocurable resin, and light is transmitted through the light guide to cure the photocurable resin with the optical film being pressed by the light guide, thereby forming the fine structure body on the adherend.

Abstract: Implementations of semiconductor devices may include: a microlens array formed of a plurality of microlenses. Each of the plurality of microlenses may have a first side and a second side. A layer of polymer may be formed over the second side of each of the plurality of microlenses and a low index box may be between adjacent microlenses of the plurality of microlenses.

Abstract: A method and apparatus for mass production of AR diffractive waveguides. Low-cost mass production of large-area AR diffractive waveguides (slanted surface-relief gratings) of any shape. Uses two-photon polymerization micro-nano 3D printing to realize manufacturing of slanted grating large-area masters of any shape (thereby solving the problem about manufacturing of slanted grating masters of any shape on the one hand, realizing direct manufacturing of large-size wafer-level masters on the other hand, and also having the advantages of low manufacturing cost and high production efficiency). Composite nanoimprint lithography technology is employed (in combination with the peculiar imprint technique and the composite soft mold suitable for slanted gratings) to solve the problem that a large-slanting-angle large-slot-depth slanted grating cannot be demolded and thus cannot be manufactured, and realize the manufacturing of the slanted grating without constraints (geometric shape and size).

Abstract: The invention teaches an environmentally friendly straw and its manufacturing method. The straw includes a tubular body having a through channel inside connecting two openings respectively at two ends of the tubular body, an outer layer surrounding the tubular body between the two openings formed by a leveling machine, an inner layer, as an inner wall of the tubular body, surrounding the channel formed by a honing machine. The straw is manufactured by leveling the tubular body, and honing the channel by a honing machine. As such, a smooth layer between the channel and the tubular body is achieved so that the straw is convenient to clean and use.

Abstract: The invention is related to a process and an apparatus for building tyres. In the process a carcass sleeve (11) comprising at least one carcass ply (3) and a pair of annular anchoring structures (5) is transferred to a shaping drum (14) comprising flange elements (16a, 16h) that are each engageable to one of said annular anchoring structures (5). The carcass sleeve (11) is shaped according to a toroidal configuration by means of mutual axial approaching of the flange elements (16a, 16b). Before shaping, annular grip elements (36) respectively carried by the flange elements (16a, 16b) are radially expanded each inside one of the annular anchoring structures (5) in order to engage the carcass sleeve (11). The annular anchoring structures (5) are moved axially apart from each other before engaging the carcass sleeve (11) by means of the annular grip elements (36).

Abstract: A method of forming a belt structure for a tire includes providing a drum having a center section. A first drum edge is near a first edge of the center section and a second drum edge is near a second edge of the center section. A first end surface extends from the center section first edge to the drum first edge and a second end surface extends from the center section second edge to the drum second edge, and a radius of each end surface is smaller than the center section radius. A rubber strip reinforced by a plurality of cords includes an outer edge and an inner edge. The strip is wound about the drum, turning from a first winding angle to a second winding angle on an end surface to reduce the tension and length differential between cords at the outer edge and inner edge of the strip.

Abstract: A method for manufacturing a tire (1) comprises a step of positioning a reinforcing ply (9) in a rubber material having grooves (6a) such that the reinforcing ply (9) extends through the grooves (6a), and of crosslinking the tire (1) based on uncured rubber material while hot moulding the latter, with the reinforcing ply (9) being pushed against the bottom of the grooves (6a).

Abstract: The technology disclosed relates to moisture removal from wood materials. In particular, it relates to a press that includes a continuous and liquid permeable sheet metal band that makes use of viaways, grooves, perforations, or combinations thereof allowing liquid to permeate therethrough. The press can also include a first pressing roller located above the sheet metal band and a first anvil roller located below the sheet metal band and forming a first nip with the first pressing roller and the sheet metal band, such that the sheet metal band being located between the first pressing roller and the first anvil roller.

Abstract: A device for erecting a flat collapsed carrier, the device comprising a shaft (46) having a longitudinal axis (a). A hub (27) is mounted to the shaft. At least one limb (16a-c) is rotationally mounted to the hub by a pivot coupling. A tool head (14a-c) is mounted to the limb. A drive motor is coupled to the shaft for rotating the hub about the longitudinal axis. The device comprises a first drive mechanism for rotating the at least one limb with respect to the hub such that the distance between the tool head and longitudinal axis can be adjusted.

Abstract: The present disclosure relates a machine for manufacturing continuous toilet seat cover reels. In certain embodiments, the machine includes: a continuous paper reel transmission mechanism, a modular cutting mechanism, and a counting wheel. The continuous paper reel transmission mechanism receives continuous paper from a continuous paper reel on a continuous paper reel rotating shaft. The modular cutting mechanism with a modular cutting wheel receives continuous paper reel from the continuous paper reel transmission mechanism and perforates the continuous paper reel using the modular cutting wheel to generate a continuous toilet seat cover. The counting wheel counts the number of toilet seat cover sheets on the continuous toilet seat cover generated. When the number of toilet seat cover sheets generated reaches a predetermined number, continuous toilet seat cover reel output device cuts last toilet seat cover sheet from the continuous toilet seat cover to produce the continuous toilet seat cover reel.

Abstract: The present disclosure relates to methods of using a machine for manufacturing continuous toilet seat cover reels. Methods include: loading a continuous paper roll onto a shaft in a first end of the machine; threading continuous paper on continuous paper roll through a continuous paper reel transmission mechanism, a printing wheel, a modular cutting mechanism, a counting wheel of the machine, onto a reel at a continuous toilet seat cover reel output device in a second end; perforating continuous paper roll to form sheet perforated tear lines, a splash prevention perforated tear line, one or more vertical splash prevention perforated tear lines and horizontal splash prevention perforated tear lines; counting the number of toilet seat cover sheets generated on the continuous toilet seat cover; and cutting the last sheet of toilet seat cover sheet from the continuous toilet seat cover to produce the continuous toilet seat cover reel.

Abstract: An object of the present invention is to provide a laminate having high scratch resistance, weather fastness and solvent resistance, and capable of achieving both light-transmitting properties and metallic luster. The laminate includes a metal foil having a plurality of through-holes that pass through in a thickness direction; and a protective layer provided on at least one surface of the metal foil, in which the protective layer contains a metal oxide, the metal foil has an average opening diameter of the through-holes of 0.1 ?m to 100 ?m and an average opening ratio, which is determined by the through-holes, of 0.1% to 90%, and the protective layer has a light transmittance of 10% or more.

Abstract: Provided herein are a fabric-based substrate and an organic electronic device including the same. The fabric-based substrate includes a fabric layer having an upper surface and a lower surface. A plurality of electrodes are disposed on the upper surface of the fabric layer. An adhesive layer is provided on the upper surface and the lower surface of the fabric layer and filled at least some empty regions between the electrodes and the fabric layer, between the electrodes, and at least some pores in the fabric layer. A self-healing polymer layer is disposed on the adhesive layer located on the lower surface of the fabric layer.

Abstract: A shock wave attenuating material (100) includes a substrate layer (104). A plurality (110) of shock attenuating layers is disposed on the substrate layer (104). Each of the plurality (110) of shock attenuating layers includes a gradient nanoparticle layer (114) including a plurality of nanoparticles (120) of different diameters that are arranged in a gradient from smallest diameter to largest diameter and a graphitic layer (118) disposed adjacent to the gradient nanoparticle layer. The graphitic layer (118) includes a plurality of carbon allotrope members (128) suspended in a matrix (124).

Abstract: A method for producing a planar composite component having a core layer (B), which is arranged between and integrally bonded to two cover layers (A, A?), wherein the cover layers contain a cover-layer thermoplastic and wherein the core layer contains a core-layer thermoplastic, comprises the following steps: a) a heated stack with layer sequence A-B-A? is provided; b) the heated stack (A-B-A?) is pressed; c) the pressed stack is cooled, whereby the planar composite component with consolidated layers integrally bonded to each other is formed. To improve the production method including the producibility of planar 3D components, it is proposed, that at least one of the cover layers (A, A?) in unconsolidated form comprises a fibrous nonwoven layer of 10 to 100 wt.

Abstract: Provided is a multilayer thermal insulator and related method that use a non-woven core layer comprising non-meltable and flame-resistant polymeric fibers. One or more scrims are disposed on the opposing major surfaces of the non-woven core layer, and a peripheral edge of the one or more scrims is either edge sealed or capable of being edge sealed to substantially encapsulate the non-woven core layer within the one or more scrims. Optionally, a binder is provided on the scrims or non-woven core layer to facilitate edge sealing. The provided insulators are essentially dust-free and capable of passing stringent flammability standards.