A feedstock configured for use in an extruder in an additive manufacturing system is configured as a braided comingled tow filament. A method of producing the braided comingled tow filament includes providing a bundle of comingled tow material having a fiber count ranging from about 1,000 fibers to about 25,000 fibers having thermoplastic fibers comingled therewith, wherein the tow material in the filament ranges from about 50 to 75 volume percent and the volume percent of the thermoplastic material ranges from about 25 volume percent to about 50 volume percent. The method includes dividing the length of comingled tow material into sections, twisting each section into a strand to form a plurality of strands of twisted tow material, and braiding together the strands.

A three-dimensional printer (1) includes a material supply device (3) that supplies material powder to a table which is movable vertically, a powder retaining wall (26) that surrounds the table and retains the material powder, a material-recovery bucket (30) that accommodates excess material powder and impurities discharged from the powder retaining wall, an impurity removing device (43) that removes the impurities from the material powder, and a material drying device (47) that dries the material powder. The material powder from which the impurities have been removed and which has been dried is returned and recycled to the material supply device.

The embodiments are and include at least an apparatus, system and method for forming print material particles for additive manufacturing (AM) printing. The apparatus, system and method include at least a melt chamber comprising a polymer melt; a vertical extruder that fluidically receives the polymer melt; an atomizer that atomizes the polymer melt from the vertical extruder and that distributes the atomized polymer melt; a fall chamber comprising a plurality of zones into which the atomized polymer melt is distributed; and a collector to receive the print material particles formed of the atomized polymer melt after falling through the plurality of zones.

The embodiments are and include at least an apparatus, system and method for forming print material particles for additive manufacturing (AM) printing. The apparatus, system and method include at least a melt chamber comprising a polymer melt; a vertical extruder that fluidically receives the polymer melt; an atomizer that atomizes the polymer melt from the vertical extruder and that distributes the atomized polymer melt; a fall chamber comprising a plurality of zones into which the atomized polymer melt is distributed; and a collector to receive the print material particles formed of the atomized polymer melt after falling through the plurality of zones.

A coating device arrangement 1 for a 3D printer 100 is described, comprising a coating device 3 having a carrier structure 21a to 21c and a container 17 fixed to the carrier structure, defining an inner cavity for receiving particulate construction material, which leads to an opening for outputting the particulate construction material, a vibration device 23 configured to vibrate particulate construction material received in the container and thereby to influence the discharge of construction material from the opening, and a stroking member 15a attached to the coating device, configured to stroke particulate construction material output from the opening to thereby level and/or compress the output particulate material, and/or a closing device 31 configured to selectively close the opening and comprising a closing member 31a attached to the coating device 3, wherein the stroking member 15a and/or the closing member 31a are fixed to the carrier structure to be vibration-decoupled from the vibration generated by means of the vibration device in the container 17.

The disclosure is of and includes at least an apparatus, system and method for a print head for additive manufacturing. The apparatus, system and method may include at least two proximate hobs suitable to receive and extrude therebetween a print material filament for the additive manufacturing, each of the two hobs comprising two halves, wherein each of the hob halves comprises teeth that are offset with respect to the teeth of the opposing hob half; a motor capable of imparting a rotation to at least one of the two hobs, wherein the extrusion results from the rotation; and an interface to a hot end capable of outputting the print material filament after at least partial liquification to perform the additive manufacturing.

A three-dimensional object printer comprises a conveyor having a surface configured to convey a three-dimensional object in a first direction; and a leveling assembly configured to level a surface of the three-dimensional object as the conveyer conveys the three-dimensional object in the first direction, the leveling assembly comprising (i) a roller having a cylindrical shape, the roller having an outer surface that moves upon the surface of the three-dimensional object to level the surface of the three-dimensional object; and (ii) a guide device arranged between the roller and the planar surface of the conveyer, the device being configured to mechanically interact with the roller to maintain a constant distance between the outer surface of the roller and the planar surface of the conveyer.

A three-dimensional object printer comprises a conveyor having a surface configured to convey a three-dimensional object in a first direction; and a leveling assembly configured to level a surface of the three-dimensional object as the conveyer conveys the three-dimensional object in the first direction, the leveling assembly comprising (i) a roller having a cylindrical shape, the roller having an outer surface that moves upon the surface of the three-dimensional object to level the surface of the three-dimensional object; and (ii) a guide device arranged between the roller and the planar surface of the conveyer, the device being configured to mechanically interact with the roller to maintain a constant distance between the outer surface of the roller and the planar surface of the conveyer.

A method for producing three-dimensional molded parts by means of layering, the moisture content of the build material mixture being able to be regulated.

A method for producing three-dimensional molded parts by means of layering, the moisture content of the build material mixture being able to be regulated.