The present invention relates to a technical field of 3D printing, and more particularly to a 3D printer spray nozzle structure and a method thereof for controlling speed and precision. According to the present invention, a feeding pipeline is embedded in an external shell, the feeding pipeline and an extruder are coaxially connected; the extruder is driven by a driving device, so as to rotate relative to the feeding pipeline. A rotation angle of the extruder relative to the feeding pipeline is controlled by rotation of a motor, for controlling a filament area actually sprayed by the extrude, in such a manner that printing speed and precision is controlled for suiting different requirements of different printing area. The present invention controls the printing speed and precision, for improving overall printing speed with precision requirements satisfied, and is applicable to 3D printer spray nozzle structure and controlling.

A supply of build material such as a spool or cartridge is instrumented with a data tag that includes information about the build material. A three-dimensional printer can read the information from the tag and determine how to use the build material during fabrication of a three-dimensional object.

A method of manufacturing a polymer film includes melting a resin, extruding the melted resin through a die to produce a polymer film, shaping the polymer film, cooling the polymer film, capturing an image of a test pattern through the polymer film, calculating a modulation transfer function value from the image, and adjusting a process parameter of the melting, the extruding, the shaping, or the cooling based on the calculated modulation transfer function value.

The present invention relates to a technical field of 3D printing, and more particularly to a 3D printer spray nozzle structure and a method thereof for controlling speed and precision. According to the present invention, a feeding pipeline is embedded in an external shell, the feeding pipeline and an extruder are coaxially connected; the extruder is driven by a driving device, so as to rotate relative to the feeding pipeline. A rotation angle of the extruder relative to the feeding pipeline is controlled by rotation of a motor, for controlling a filament area actually sprayed by the extrude, in such a manner that printing speed and precision is controlled for suiting different requirements of different printing area. The present invention controls the printing speed and precision, for improving overall printing speed with precision requirements satisfied, and is applicable to 3D printer spray nozzle structure and controlling.

A three-dimensional drawing device can include a housing configured for to be held in user's hand, shaped to allow manipulation of the housing like a pen, and configured to accept a strand of thermoplastic material. The drawing device has a nozzle assembly with an exit nozzle and a motor connected to a gear train that engages the strand such that rotation of the motor causes the feed stock to be extruded out of the exit nozzle to form a three-dimensional object. The motor can be controlled using a variable speed control mechanism or first and second actuators, thereby controlling movement of the strand, for example, to advance or retract the strand relative to the nozzle assembly.

An extrusion device includes a filament-engaging mechanism that urges a filament, received by the device, through a heater and a nozzle. A moveable control member can be manipulated by a user during operation of the device to alter a rate of extrusion. The extrusion device can have a continuous flow mode of operation. The extrusion device can be configured to operate with low electrical power consumption.

Three-dimensional printer fabrication is improved by receiving a digital model of an object specifying two or more different build materials, prioritizing the different build materials with a ranking, identifying exclusive locations where a surface layer of the object has one of the build materials, generating an external structure for the object according to one or more design rules, matching a first build material of the external structure to a second build material of the object at each of the exclusive locations, the matching based on at least one shared property of the materials, generating tool instructions for fabricating the object and the external structure, the tool instructions including one or more selections between the first build material and the second build material based upon the ranking and the matching, and controlling the three-dimensional printer according to the tool instructions to fabricate the object and the external structure.

An apparatus (2) for forming a noodle (20) within an elongate groove (14) of a product is provided comprising an extrusion system comprising at least one extruder nozzle (4) through which noodle material (16) is extruded, at least one levelling device (6) adjacent the extruder nozzle (4) which levels the noodle material (16), and a gantry system which moves the extruder nozzle (4) and the levelling device (6) along the elongate product groove (14), such that noodle material (16) is extruded along the product groove (14) and is levelled to form at least part of the noodle (20) within the product groove (14).

Extruder feed system. The system includes a pair of spaced-apart, internally and oppositely threaded rotatable elements for receiving and engaging a plastic filament material. Sn electric motor rotates the rotatable elements in opposite directions thereby to drive the filament into a liquefier chamber for subsequent discharge through a nozzle. The system provides very accurate layer-by-layer build up.

An interdependent dual driver system for advancing and extruding thermoplastic material to be used in 3-dimensional printing applications. The system and process uses a two-driver system where one driver pushes the material through the device while the second driver pulls the material. The material is advanced through a nozzle designed to heat and extrude thermoplastic materials.