202results about "Manufacturing environment conditioning" patented technology

A Hall effect thruster is provided having one or more components fabricated using additive manufacturing techniques. Additive manufacturing can be used to fabricate the magnetic flux guide and the discharge channel of the thruster. In addition, the propellant distributor for the thruster can be incorporated into the base of the discharge channel. The magnetic flux guide can be fabricated with a filament impregnated with a magnetic material and the discharge channel can be fabricated with a filament impregnated with a ceramic material. Permanent magnets can be positioned in the magnetic flux guide at locations that surround the discharge channel.

We describe a system for use in an apparatus for producing a three-dimensional workpiece using an additive layer manufacturing technique, the system comprising: an irradiation unit configured to selectively irradiate an irradiation plane with an irradiation beam, and a control unit coupled to the irradiation unit and configured to control the irradiation unit to modulate, as a function of a local process parameter when producing the three-dimensional workpiece, an irradiation beam property of the irradiation beam.

Device for separating pollutants and / or particles from a process exhaust gas stream, in which a process raw gas flows by means of a compressor towards at least one filter element and through the at least one filter element; wherein the at least one filter element is arranged in a chamber and a metering device for a powdered additive is arranged upstream of the at least one filter element in the flow direction of the process raw gas, with which the additive can be supplied to the process raw gas. characterized in that wherein a storage container (A) for the powdered additive is arranged on the dosing device such that the powdered additive is dispensed onto a surface of at least one sieve (D) and that at least one sieve (D) can be set into vibration by means of a device (B) and / or vibrations can be coupled into the sieve (D) that act on the sieve (D); wherein characterized by the fact that The mesh size of the at least one sieve (D) and the particle size of the powdered additive are selected such that particles of the powdered additive only pass through the sieve (D) if the at least one sieve (D) has been set into vibration or the sieve (D) is vibrating and particles that have passed through the at least one sieve (D) can be fed into the process raw gas stream and are deposited as part of a filter cake on the at least one filter element, wherein two sieves (D) are arranged decoupled from each other so that independent, unhindered vibration of one of the two sieves (D) or both sieves (D) is possible.

The utility model discloses a material conveying and spraying device for 3D printing, and belongs to the technical field of material conveying for 3D printing, the material conveying and spraying device for 3D printing comprises a discharging bin and a feeding port formed in the side wall of the discharging bin, the bottom of the discharging bin is fixedly connected with a connector, the connector is detachably connected with a nozzle, and the nozzle is fixedly connected with the discharging bin. A first baffle and a second baffle which are of an annular structure are sequentially and fixedly connected to the axial position of the inner side of the nozzle from top to bottom, a hard spring is installed on the upper surface of the second baffle, and the top end of the hard spring is connected with a sealing ball abutting against a through hole in the first baffle. Guide rods are symmetrically installed on the outer wall of the sealing ball, guide grooves in sliding connection with the ends of the guide rods are formed in the inner wall of the nozzle, a sealing cover is installed on the top of the discharging bin, an air inlet pipe is installed on the sealing cover, it is guaranteed that the pressure of material spraying is consistent front and back, and then the printing effect is guaranteed.

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 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 present invention relates to an additive manufacturing apparatus (40), which comprises a chamber (11, 21), a driving device, a molding chamber (43), and a powder laying device, the chamber (11, 21) having a support table (13b, 24) arranged in a sealed manner in the chamber (11, 21), a quick release assembly arranged at the bottom of the support table (13b, 24) to be connected to the driving device so that the driving device can be quickly connected to or disconnected from the support table (13b, 24), and the chamber A first part (14a) of the assembly transfer structure is arranged on (11, 21), which cooperates with a second part (14b) of the assembly transfer structure arranged on the additive manufacturing device (40) to realize the rapid transfer of the chambers (11, 21) in the additive manufacturing device (40). Thus, after additive manufacturing is completed, the post-processing of the molding table (13) can be quickly performed and the chambers (11, 21) can be quickly replaced, significantly reducing the time required for maintenance and reducing potential risks in the maintenance process.

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.

The invention provides a curing system, a printer and a second curing container, and the curing system comprises a first curing container which comprises a shell with a first opening and a door configured to open and close the first opening, and the first curing container is internally provided with a curing light source and a heating assembly; the second curing container can be put into the first curing container through the first opening and can be taken out of the first curing container, the second curing container is provided with a cavity configured to contain a printed piece, and the second curing container is provided with an air inlet and an air outlet which are communicated with the cavity; and at least part, facing the curing light source, of the second curing container is configured to be light-transmitting. The second curing container can be placed in the first curing container and taken out of the first curing container, the gas inlet is connected with a gas source, at least one of nitrogen or carbon dioxide or inert gas is filled, and the aerobic inhibition phenomenon caused by curing of the second curing container in the aerobic environment is avoided.

The invention relates to an additive manufacturing machine (4) comprising: - a manufacturing enclosure (49) equipped with a glove box (251); - a powder transport circuit (42); - a power source configured to melt the powder in the manufacturing zone (63); and - a collection circuit (57) configured to collect powder from the transport circuit (42) and transport the collected powder to an outlet of the collection circuit (57), the outlet of the collection circuit being located above a reception zone (281), the reception zone (281) being different from the manufacturing zone (63) and located opposite the outlet of the collection circuit (57), and the gloves (251) being configured to handle an object located in the enclosure (49) and to reach the reception zone (281).

A method for removing powder from a three-dimensional workpiece produced by additive manufacturing is provided. The method includes mounting a build cylinder to a build cylinder fixture. The build cylinder includes a substrate for holding the three-dimensional workpiece and a sidewall releasably attached to the substrate. The build cylinder includes residual powder from the additive manufacturing process of the three-dimensional workpiece. The method further includes attaching a foil to the build cylinder fixture and / or the substrate. Additionally, an apparatus is provided for removing powder from a three-dimensional workpiece produced by additive manufacturing.

A method of determining an irradiation sequence for a powder bed fusion process, wherein each scanner of a plurality of scanners is operated to steer a corresponding energy beam across the powder bed (104) such that a plurality of the energy beams (118a, 118b, 118c, 118d) irradiate the powder bed (104) when a recoater (109) is above the powder bed (104), and powder layers (104a, 104b) are formed with the recoater (109) such that a movement of the recoater (109) on a powder layer forming stroke differs for different ones of the powder layers (104a, 104b). The method comprises determining an irradiation sequence for a powder layer 9104a, 104b) by allocating each scanner to irradiation regions (1a, 2a, 3a, 4a,1b, 2b, 3b, 4b) taking into account the movement of the recoater (109) on the powder layer forming stroke differing for different ones of the powder layers (104a) such that irradiation of each irradiation region (1a, 2a, 3a, 4a, 1b, 2b, 3b, 4b) is completed before the irradiation region (1a, 2a, 3a, 4a, 1b, 2b, 3b, 4b) is covered during formation of the next powder layer (104b).

The present disclosure discloses a 3D printing system and method. The system includes a 3D printer, a controller, and a gas separation apparatus. The controller connects with the 3D printer, and is configured to control the 3D printer to perform 3D printing. The controller also connects with the gas separation apparatus, and is configured to generate a control instruction according to a preset control policy and send same to the gas separation apparatus. The gas separation apparatus is configured to, based on the received control instruction, separate a target gas from air received from the outside of the gas separation apparatus, so as to transport same to the 3D printer.

In a process for the lithography-based generative production of three-dimensional shaped bodies, wherein material that is solidifiable by exposure to electromagnetic radiation is present on a material support that is permeable in at least a region thereof, a building platform is positioned at a distance from the material support, material located between the building platform and the material support is heated and in the heated state is location-selectively irradiated by a first radiation source and solidified, wherein the electromagnetic radiation is introduced into the material from below through the material support that is at least partially permeable to radiation from the first radiation source, the heating of the material is performed by irradiating the material support with electromagnetic radiation of a second radiation source, wherein the material support is substantially impermeable for the radiation of the second radiation source.

The invention relates to the technical field of 3D printing, in particular to a multi-nozzle micro-nano 3D printing device and method based on second electrode auxiliary electric field driving. The injection process is controlled through the first voltage, and the second electrode voltage is used for controlling deflection of the jet flow. Because the voltage of the second electrode is adjustable and the jet flow surface is provided with positive charges, the deflection of the conical jet flow can be accurately controlled by adjusting the voltage under the interaction of the electric field.

The utility model relates to an air purification device and a three-dimensional printing system, and the air purification device comprises an outer cylinder which is provided with an air supply channel; the inner barrel is arranged in the air supply channel, and the air supply channel is divided into a first airflow channel and a second airflow channel by the inner barrel; the purification assembly is arranged in the air supply channel and comprises an illumination module, a photocatalyst carrier module and an ozone generation module, the ozone generation module is arranged in the second airflow channel, and ozone generated by the ozone generation module flows to the first airflow channel from the second airflow channel. Inlet air flow of the air supply channel can smoothly enter the first air flow channel and the second air flow channel, the air inlet efficiency is improved, air is rapidly purified, meanwhile, ozone enters the first air flow channel from the second air flow channel, decomposition of harmful substances can be enhanced, and the purification effect is improved.

This disclosure relates to a pulsed release module, a pulsed release tray, a 3D printing apparatus and a printing method, wherein the pulsed release module includes a tray assembly, a support assembly and a pulsed gas supply assembly, the tray assembly having a release film, the support assembly being located below the tray assembly and the support assembly having a support member, the support member and the release film being separated by a first predetermined distance in the height direction to form a gas chamber between the support member and the release film, the support member being provided with an intake port and an exhaust port communicating with the gas chamber, the pulsed gas supply assembly including a gas oscillation assembly and a gas supply line, the gas oscillation assembly being located in the gas supply line and the gas supply line being connected to the intake port.

A refractory material foam can include a plurality of members made from a refractory material, where each member of the plurality of members is fused to one or more other members of the plurality of members at a fusion point, where each member of the plurality of members is arranged in a determined spatial location.

This application describes a method for controlling an irradiation beam for irradiating a raw material powder layer in a layered manufacturing process for producing three-dimensional workpieces, wherein the method includes: depositing a raw material powder layer on top of a carrier and / or on top of a preceding material layer above the carrier using a layer deposition mechanism; controlling the irradiation beam to irradiate at least a portion of the raw material powder layer in the irradiation area when the distance between the irradiation area and the layer deposition mechanism is higher than a threshold distance, and wherein the threshold distance depends on (i) the moving speed of the layer deposition mechanism and (ii) the airflow velocity v above the raw material powder layer. g .

A method of additive manufacturing an article from a feed material in a chamber includes evacuating at least some of a first gas from the chamber, thereby reducing a pressure therein from a first pressure to a second pressure and reducing the first gas from a first concentration to a second concentration. At least some of the first gas is then gettered from the chamber using a getter, thereby lowering the first gas concentration to a third concentration. The article is then additive manufactured from the feed material in the chamber using the getter as a substrate. The gettering comprises heating the getter at least in part using a fusion source, and the additive manufacturing comprises heating the feed material at least in part using the fusion source.

The embodiment of the invention provides a printing method and device, equipment, a medium and a product. The method is applied to the printing equipment, the printing equipment comprises a forming module, a closed containing cavity is formed in the forming module, the forming module comprises a light-transmitting assembly arranged on one side of the containing cavity and a forming platform arranged opposite to the light-transmitting assembly, the containing cavity is used for containing printing materials, and the forming platform can move towards or away from the light-transmitting assembly; the method comprises the following steps: sealing identification: identifying whether the accommodating cavity is qualified in sealing; and printing is conducted, specifically, the forming platform is controlled to move away from the light-transmitting assembly, the containing cavity is inflated for release, and the forming platform is controlled to move to the next printing position for light curing. The method is used for achieving the effect of improving the 3D printing efficiency, stability and success rate.

To provide an improved method and apparatus for automated production and / or qualification of devices and / or device components.SOLUTION: The apparatus generally comprises an improved manufacturing technique. The apparatus provided is a substantial improvement over automated manufacturing techniques.SELECTED DRAWING: Figure 1

The present invention provides an improved method and apparatus for additive manufacturing of molded articles having surface quality suitable for use as optical elements such as contact lenses. [Solution] The improvement is directed toward repeatedly coating monomers according to an energy transmittance pattern such as a grayscale image. The method includes intermittent pinning of the deposited polymerizable mixture and final curing of the deposited polymerizable mixture. A pattern of multiple defined regions may be produced, each region representing the amount of energy transmittance associated with that region. Each region may have a value of light based on a scale such as 8-bit, 16-bit, 32-bit, 64-bit scale or other scales. In some embodiments, each region may point to the smallest single component of a digital image.

A layered molding device of the present application has: a bottom portion having a molding region in which a molded article is layered molded; a top portion located above the bottom portion and having a non-active gas blowing portion; a side portion rising from a side end portion of the bottom portion; and a non-active gas discharge port, in a case where a direction in which the molded region faces the discharge port from the bottom portion is set as a first direction, and a direction intersecting the first direction in a direction parallel to the bottom portion is set as a second direction, a width of the blowing portion in the second direction is greater than a width of the blowing portion in the first direction, and is greater than or equal to a width of the molding region in the second direction.

A bioreactor allowing bioprinting inside an interior volume thereof is assembled to form a side wall extending upwardly from a base provided with a target support for the bioprinting. Once an adapter has been coupled to a bioreactor top portion to plug a corresponding aperture O4, a biological material depositing end may be maintained in an inserted state, extending through and / or being adapted to be fed via the aperture. A sealed enclosure, including the side wall and ports, is formed by a sealing operation to interconnect the base and the top portion. Bioprinting is done by driving from outside the depositing end, using variation of said volume, for delivering the biological material on the support and then, a culture and / or maturation phase of the printed tissue may start inside the enclosure, without displacement of the printed tissue.

Provided is a filament for three-dimensional molding with which three-dimensional molding with fused filament fabrication is possible. Provided are a three-dimensional molded article using the filament for three-dimensional molding and a method for producing the same.The filament for three-dimensional molding contains a polyacetal resin, wherein a difference between a melting point Tm2 and a crystallization temperature Tc (Tm2−Tc) measured by a differential scanning calorimeter is 22° C. or higher and 40° C. or lower, and a melt flow rate measured at a temperature of 190° C. and a load of 2.16 kg is 0.8 g / 10 min. or more and 8.0 g / 10 min. or less.

A method for determining the irradiation sequence in a powder bed fusion process, wherein an object is to be constructed in the powder bed fusion process. The method includes determining the geometric properties of the object's surface at different locations in the construction direction based on geometric data (150) describing the object, and based on the geometric properties (D... max To select different powder layer thicknesses (T) for the powder layer min T2, T3, T4, T5, T max ), and based on the selected layer thickness (T) min T2, T3, T4, T5, T max The irradiation sequence is determined by using geometric data (150) and geometric data (150).