1345results about "Applying layer means" patented technology

The invention discloses a photocuring 3D printing mechanism method for multi-material cooperative spraying, and relates to the field of cooperative control, and the photocuring 3D printing mechanism method comprises the following steps: layering a model, generating a material distribution map, and labeling a functional area and a transition area; a multi-nozzle array is used for accurately positioning and spraying according to the atlas; a gradual change path is planned in the transition area, and gradient change of material components is achieved through cooperative spraying; a partition curing strategy is adopted, ultraviolet light full curing and visible light semi-curing are adopted, and leveling is promoted in combination with micro-vibration; spraying a penetrating agent between layers to form a mechanical interlocking enhanced interface; based on visual online defect detection, printing parameters are fed back and adjusted in real time through a CNN model. The device and the method have the advantages that accurate mixing of multiple materials is realized through cooperative spraying of the multiple piezoelectric sprayers and gradual change path planning, and real-time defect detection and correction can be realized by matching with differentiated photocuring, high-frequency micro-vibration leveling and interlayer penetrating agent interlocking, so that high-precision multi-material functional component forming is efficiently completed.

The invention relates to the technical field of 3D printing, and discloses a fiber reinforced composite material 3D printer and a printing method, current deposition tows are heated / cooled under the action of a preset interlayer pressing force through an interlayer pressing device, interlayer fusion can be promoted, the interlayer bonding strength can be improved, the heat history in the wire cooling process can be eliminated, and the 3D printing quality of the fiber reinforced composite material is improved. The crystallization behavior, the grain size and the grain distribution of a polymer in a printing wire material are controlled, and the microscopic uniformity of a composite material printing product is improved. The side face and the upper surface of the current deposition tow are subjected to hot-pressing shaping through the inter-channel pressing device, meanwhile, secondary hot-pressing is conducted on the adjacent printing layer deposition tow, resin of the current deposition tow and resin of the adjacent printing layer deposition tow can be melted and flow, so that the inter-channel gap between the adjacent printing layers is filled, and the printing effect is improved. And the inter-track bonding strength is improved.

The invention relates to the technical field of additive manufacturing 3D printing, and discloses a 3D printing head for a continuous fiber reinforced composite material and a printing method. A concentric circle type step temperature control module is used for applying preset step type temperature fields distributed from inside to outside in a gradient mode to adjacent printing layer deposition tows and current deposition tows in the printing process, and the grain size and uniformity of crystalline resin in the adjacent printing layer deposition tows and the current deposition tows are regulated and controlled. The large deformation degree of a printed product after forming is avoided; and meanwhile, in the printing process, secondary heating melting is conducted on deposition tows of adjacent printing layers, under the action of a preset pressure field, fusion of the deposition tows of the adjacent printing layers and current deposition tows is promoted, the bonding strength between printing layers / channels is improved, and then the mechanical property of a 3D printing continuous fiber additive manufacturing printing product is improved.

Provided herein is an additive manufacturing system having a build chamber, a plurality of tools and a plurality of tool bays where each tool bay is arranged to store one tool. A gantry is arranged to select one tool and removes the selected tool from a tool bay. A tool mount is slidably arranged on the gantry and to detachably couple the selected tool to the gantry. Two guide rails extend in a first direction and are arranged to receive the selected tool. The guide rails are movable along a second direction perpendicular to the first direction, so as to enable alignment of the guide rails with one of the tool bays at a time. Channel seals expand or contract based on a relative movement between the tools and the sliders.

A dual-switch 3D print head having synergistic printing of resin and continuous fibers, the print head comprising a main frame (1), wherein a resin head extrusion mechanism (3) is provided on the main frame (1); the main frame (1) is connected to a continuous fiber printing mechanism (6) by means of a dual-nozzle switching mechanism (2); a continuous fiber cutting mechanism (7) and a wire feeding and clamping coordination mechanism (63) are provided on the continuous fiber printing mechanism (6); the continuous fiber printing mechanism (6) comprises a continuous fiber printing mounting plate (61); a fiber clamping mounting base (631) is provided on one side of the top of the continuous fiber printing mounting plate (61); a fiber clamping actuator is mounted on the fiber clamping mounting base (631); a clamping connecting rod (635) is movably connected to the end of the fiber clamping actuator; the other end of the clamping connecting rod (635) is connected to a fiber guide wheel (633); a wire feeding gear (634) is provided beside the fiber guide wheel (633); and the wire feeding gear (634) is mounted on the continuous fiber printing mounting plate (61). The dual-switch 3D print head can ensure the precision of the relative positions between dual nozzles during multiple switchings for a long time, and also achieve the organic combination of active wire feeding and passive wire feeding for a continuous fiber wire material is also realized, thereby realizing high-quality printing of continuous fibers.

A three dimensional printing system which creates a multiple color printed structure which may be e.g. an inflatable likeness. The printing is done with a stretchy material such as silicone and is printed in layers of different color in order to match the designed likeness colors. In preferred embodiments, the 3d printing is done inside a gel suspension with a specialized print head which dispenses silicone in layers of color to produce the final desired color of silicone in the particular locations as determined by the avatar or likeness design.

The present document relates to a dispensing head for continuous fiber reinforced fused filament type additive manufacturing. The dispensing head is configured for dispensing a material onto a substrate carrier platform, and comprises one or more inlets for receiving a strand of meltable solid material and a reinforcement fiber and a material passage extending from the receiving inlets to a dispensing outlet. The dispensing head further comprises a material heating unit for liquefying the material and drive means for driving the material through the material passage. The material heating unit comprises a solid radiation body extending from the dispensing outlet at least in a direction parallel to the substrate carrier platform, defining a radiation face toward the substrate carrier platform, wherein the radiation body is thermally separated from the dispensing outlet.

A thermal folding forming method for additive manufacturing of a three-dimensional lattice structure of a fiber-reinforced composite, the method comprising the following specific steps: a first step, printing a fiber-reinforced composite having a repeated two-dimensional planar lattice structure by means of a dual-nozzle continuous fiber-reinforced composite additive manufacturing apparatus; a second step, using a robotic arm gripper (4) to grip the printed fiber-reinforced composite having a two-dimensional planar lattice structure and place same onto a retractable hot roller thermal folding and heating device, and heating same at a fiber connection point, wherein the thermal folding device is arranged in a 10 x 10 columnar lattice and can be fully retracted with a retractable height ranging from 0-50 mm, such that the fiber-reinforced composite having a two-dimensional planar lattice structure is heated and elevated by means of the retractable hot roller, and can be folded into the fiber-reinforced composite having a three-dimensional lattice structure; and a third step, using the robotic arm gripper (4) to grip the fiber-reinforced composite having a three-dimensional lattice structure and place same into a water-cooling box for water cooling and shape setting. The forming method can improve the structural complexity of the fiber-reinforced composite, thereby achieving the three-dimensional structure transformation of the composite.

The present disclosure provides a 3D printer including a receiving surface for accepting the accumulation of material layers, and a gantry having a shaft and carriage that is translated along the shaft, and an extruder assembly that is articulated to rotate a printing plane, wherein the extruder assembly is attached to the carriage and the articulated extruder assembly is manipulated to rotate the printing plane away from parallel with the receiving surface.

The invention discloses an ultra-high-speed motor bearing anti-deformation crown-shaped retainer and a manufacturing method, and belongs to the technical field of motor bearings. The super-high-speed motor bearing anti-deformation crown-shaped retainer is formed by printing functionally graded materials, the functionally graded materials comprise a hard-phase material and a soft-phase material, the hard-phase material is glass fibers, and the soft-phase material is nylon 66; the equivalent elastic modulus of the functionally graded material is continuously and gradually changed in the axial direction from the bottom of the pocket to the tail end of the lock claw, so that the elastic modulus of the bottom area of the pocket is higher than that of the tail end area of the lock claw, and elliptical deformation of the pocket and centrifugal deformation of the lock claw are cooperatively restrained. And active reconstruction of a rigidity field of the crown-shaped retainer is achieved, specifically, a tough phase is constructed in a locking claw area to absorb collision energy, a strengthening phase is formed in a pocket area to weaken stress concentration, a rigidity gradient is established at a connecting part to restrain the umbrella-shaped effect, and the crown-shaped retainer with the high toughness-gradient-high strength characteristics and the design method of the crown-shaped retainer are provided.

The invention relates to the technical field of additive manufacturing equipment, and discloses a double-nozzle switching structure for multi-material 3D printing, the double-nozzle switching structure comprises a switching lifting assembly, the switching lifting assembly comprises a mounting plate, the inner side of the mounting plate is rotatably sleeved with a motorized shaft, the bottom of the motorized shaft is fixedly connected with a connecting main body, and the connecting main body is fixedly connected with a nozzle; the spray head assembly comprises a discharging assembly, the bottom of the connecting body is fixedly connected with a delay driving assembly, the bottom of the delay driving assembly is rotationally sleeved with a collecting tank, the bottom end of the collecting tank is fixedly sleeved with a chassis, and the edge of the top of the chassis is fixedly connected with a material bearing assembly. The connecting body and the motorized shaft are in linkage to achieve 180-degree switching of the spray head, the discharging assembly blows out spray head materials, the material bearing assembly and the collecting tank cooperate to recycle the materials, the material bearing assembly comprises a semicircular pipeline, and the problems that when the spray head is switched to replace the materials, the spray head needs to be emptied, time is consumed, and consumables are wasted are solved.

The application discloses a kind of polymer material 3D printing additive and subtractive integrated machine and its control method, including rack body, movement module, milling cutter module, material spraying module, camera module, rack body is the frame structure of near body face opening, movement module is set in the middle frame of rack body;Movement module includes X-axis movement component, Y-axis movement component, Z-axis movement component, and the model of 3D printing forming is formed on the bearing platform by material spraying module;The cutter is provided below the milling cutter module by R-axis connecting seat, and the printed model is polished by the rotation of cutter.The control method provided by the application corrects the model sprayed by milling cutter module to material spraying module, and adopts the way of layer-by-layer spraying and layer-by-layer correction, which greatly improves the precision of spraying forming.

The disclosure concerns a 3D printhead, a radiation emission device, and processes for additive fabrication and extrusion. The printhead comprises a radiating plate configured to transmit a thermal energy to the printing material deposited on a surface. A radiation emission device may be attached to an additive fabrication or extrusion device and comprising a radiating plate and a heating element. Additive fabrication and extrusion processes using a radiation for heating a surface for deposition of the material. Characteristics of products thus produced, such as porosity rate, warping, isotropy, maximum stress, internal stress, impact resistance, bending resistance, deformation at break, rigidity modulus, crystallinity rate, and impermeability are improved.

High speed, accurate, scalable, and dimension-insensitive additive manufacturing of a Three-Dimensional (3D) object may use incrementally solidifying light-sensitive resin layers. A new layer is formed by supplying the resin liquid via a cavity in the formed 3D object, and curing the supplied resin by a focused light beam, such as a laser beam. The added layers are formed by supplying, 2024 / 184876 using a pump, the light-cured resin fluid to one or more bottom openings to be output from the top opening (or to multiple openings) via a vertical cavity (or multiple cavities) of the 3D object. The curing is by focusing a light beam to the area of the resin output from the top opening, while keeping the top opening non-cured, so that resin can be passed via the cavity. Such 3D printing may be directly applied to any surface, such as a floor, wall, wing structure, or machined part.

The invention provides a multi-printing-nozzle automatic switching method, a multi-color 3D printing system and a computer storage medium. The multi-printing-nozzle automatic switching method is applied to a multi-color 3D printing system. The method comprises the steps that stopping coordinates and material color information of all nozzles are obtained; a printing instruction is responded, a tool head is used for clamping an initial nozzle to a calibration position to obtain reference coordinates of the initial nozzle, then the initial nozzle is moved to the position above a hot bed, the nozzle is heated to the melting temperature to complete the color printing task, heating is stopped after completion, and the nozzle is reset; and for the follow-up ith color task, the tool head clamps the corresponding ith spray head to the same calibration position to obtain the coordinates to be calibrated, the offset is calculated by using the coordinates to be calibrated and the reference coordinates, the coordinates of the spray head are calibrated, and finally the calibrated spray head is controlled to move to the hot bed to continue to execute the printing task. According to the method, the cost of the multi-color 3D printing system can be reduced, and meanwhile higher printing efficiency is achieved.

The invention relates to the technical field of light-weight wire harness and multi-material conformal additive manufacturing, and provides a light-weight conformal wire harness additive manufacturing method and a working device.A base body obtained after surface treatment is installed and fixed to a printing device, printing and laying procedures are imported, and the printing device is initialized; conformally printing a first insulating layer on the surface of the substrate; a first conducting layer is laid on the first insulating layer in a conformal wiring mode through a wiring unit; conformally printing a second insulating layer over the first conductive layer; conformally printing a first shielding layer on the second insulating layer; if the wire harness is a multi-layer conformal wire harness, repeating the process to complete conformal manufacturing of all other insulating layers, conductive layers and shielding layers; if the wiring harness is a single-layer conformal wiring harness, a packaging layer is directly printed in a conformal manner; and post-processing the multi-material conformal wire harness to complete the preparation of the conformal wire harness. The method has the advantages of being high in production automation degree, high in production efficiency, high in material utilization rate, good in production flexibility, environmentally friendly in manufacturing and the like.

The present disclosure provides systems and methods for printing three-dimensional (3D) objects. A system for printing a 3D object may comprise at least one platform configured to hold a film of at least one mixture, a deposition unit for providing the film of the at least one mixture, and a building unit for forming at least a portion of the 3D object from the film of the at least one mixture. The system may further comprise a controller operatively coupled to the at least one platform. The controller may be configured to direct the at least one platform to move from the deposition unit to the building unit, or vice versa, along a plurality of non-overlapping paths.

The subject matter is a procedure for additive manufacturing of a three-dimensional element by means of an additive manufacturing apparatus, comprising the steps of: - mixing basic components inside a mixer to obtain a construction material; - introducing said construction material into a hopper of a pump; - pumping the construction material into an end effector (20) by means of the pump; - discharging the construction material from a nozzle (22) of the end effector (20). Said end effector (20) is moved during the procedure so as to deposit the construction material in predefined positions. Said procedure envisages that the end effector (20) comprises at least one further opening (24) for the introduction into a hollow body (21), upstream of the nozzle (22), of a medium suitable for reducing the density of the construction material coming from the respective generator and to be mixed with the construction material in order to alter the physical and / or mechanical and / or rheological properties thereof.

The utility model relates to the technical field of 3D printing, in particular to a connecting assembly and a 3D printer. The connecting assembly is used for the 3D printer, the 3D printer further comprises a hot bed, a hot bed connecting piece and a hot bed lifting assembly, the hot bed lifting assembly is connected with the hot bed through the hot bed connecting piece, the hot bed lifting assembly can drive the hot bed to move in the height direction of the 3D printer, and the connecting assembly comprises a first connecting component, a second connecting component and a moving component; the first connecting component is connected to the hot bed connecting piece, the second connecting component is connected to the hot bed lifting assembly, the moving component is located between the first connecting component and the second connecting component, the moving component can move along a first plane relative to the first connecting component and the second connecting component, and the first plane is perpendicular to the height direction. In this way, the connecting assembly is easy to manufacture, the connecting assembly can stably transmit the transmission force of the hot bed lifting assembly to the hot bed connecting piece, the moving component can effectively transmit torque, and the moving component can move in the first plane perpendicular to the height direction. The tolerance and fluctuation are eliminated through the movement along the first plane perpendicular to the height direction when the stable transmission of the movement in the height direction is ensured, and the movement is more accurate.

An additive manufacturing process for all or part of a tire tread configured to smooth any raised areas (R) present on a circumferential bearing surface (5) of said tire by depositing an extruded material forming the tread, wherein a pressure regulating device (24) inside the extruder is controlled in real time, via a pressure control loop, according to a pressure measured by the pressure sensor and a constant pressure setpoint. The process is configured to smooth a plurality of raised areas (R) present on a circumferential bearing surface (5) of the tire. Figure for the abstract: Fig 8A

The invention relates to a system (1) for producing a composite part (2) by automated layup, the system (1) comprising a creel (3) comprising at least one reel (80) of a tape (8) of fibres made of composite material, a layup head (5) providing at least one tape (8) of fibres made of composite material, a mould (7) configured to receive the tape (8) and form the composite part (2) by additive manufacturing, and a compacting roller (6) configured to apply the tape (8) to the mould (8) or to already deposited tape. The system (1) further comprises means (10) for preparing the at least one tape (8), these preparation means (10) being mounted upstream of the layup head (5) and comprising at least one heating module (11, 12) for heating the at least one tape (8).

A method of printing a three-dimensional object (90) including: providing a 3D inkjet printing system including: a printing chamber (162) accommodating a printing unit (120) having an inkjet printing head and a curing subunit (124), and a supply unit (130) including a modeling material and a support material; and printing the 3D object (90) in multiple consecutive layers according to a predefined printing sequence, wherein for at least one of the multiple consecutive layers the predefined printing sequence for the same respective layer includes depositing and curing the modeling material and the support material separately from each other either in time or in space. Some embodiments may include controlling a concentration of oxygen in the printing chamber (162) to be in a predefined oxygen concentration range. Some embodiments may include controlling a temperature in the printing chamber (162) to be in a predefined temperature range.

To provide a technique capable of improving at least one of high accuracy and high speed in shaping a three dimensional shaped article.SOLUTION: The three-dimensional shaping apparatus includes a plasticizing unit that plasticizes a material to generate a shaping material, a nozzle that discharges the shaping material toward a stage, and a control unit that controls shaping of a three-dimensional shaped object by discharging the shaping material from the nozzle, wherein the plasticizing unit includes a drive motor, a screw, a barrel, a heating unit, and a position changing mechanism that changes a relative position between the screw and the barrel. The control unit causes the plasticizing unit to generate the shaping material by setting the distance between the screw and the barrel to a first distance by the position changing mechanism when the condition related to shaping is a first condition, and causes the plasticizing unit to generate the shaping material by setting the distance between the screw and the barrel to a second distance by the position changing mechanism when the condition is a second condition, and the second distance is larger than the first distance.SELECTED DRAWING: Figure 1

Disclosed in the present invention are a printing nozzle, a biological 3D printer and a printing control method. The printing nozzle of the present invention comprises a main body, a nozzle and a drive module, a plurality of bio-ink cavities being defined in the main body. The nozzle comprises a discharge section and a plurality of branch sections, each branch section being connected to the discharge section. A first channel is defined inside each branch section, and a second channel is defined inside the discharge section, one end of each first channel being communicated with a corresponding bio-ink cavity, and the other end of each first channel being communicated with the second channel. The drive module is connected to the main body, and is used for driving each bio-ink cavity to supply a bio-ink to the nozzle. The present printing nozzle can achieve the extrusion of various bio-inks and can realize precise and orderly spatial arrangement of various cells or biological materials by means of voxelization programming, thereby facilitating construction of complex tissue or organs.

The invention discloses an additive manufacturing device which comprises an air guide slip ring, a rotary nozzle, an air pump, a servo motor, a charging barrel and a control system, the air guide slip ring comprises a fixed part and a rotary part, the fixed part is of a hollow columnar structure, the rotary part comprises a ventilation end and a material receiving end, the ventilation end is rotatably inserted into the hollow interior of the fixed part, and the material receiving end is connected with the rotary nozzle. A plurality of annular grooves are formed in the outer side face of the ventilation end, air guide holes are formed in the annular grooves, a plurality of independent annular cavities are defined by the annular grooves and the inner side wall of the fixing part jointly, a plurality of communicating holes used for being communicated with an air pump are formed in the outer side of the fixing part, and a plurality of ventilation holes are formed in the material receiving end. Each vent hole is communicated with different annular cavities through an air guide channel, and the rotary nozzle is fixedly connected with the material receiving end. The soft robot of a programmable spiral structure can be printed, and meanwhile the problem that pipelines such as air pipes and electric wires are wound in the printing process is solved. The invention further provides a using method of the additive manufacturing device.

The invention provides integrated 3D printing equipment and technology capable of eliminating step lines, and belongs to the technical field of 3D printing equipment. The problems of uneven spraying, low efficiency and the like due to the fact that step lines are eliminated manually in the prior art are solved. An upper bin and a lower bin which are arranged up and down are arranged in a machine box, and a workbench and a lifting mechanism used for driving the workbench to vertically ascend and descend are further arranged in the machine box; a printing device is arranged in the upper bin and used for printing workpieces, and a spraying and curing device is arranged in the lower bin and used for spraying and curing the printed workpieces. The method has the advantages that after printing is completed, the step pattern post-treatment process can be automatically carried out, and the production efficiency is improved.

A dual printing head device with a tensioning device for continuous fiber-reinforced composites includes a printing support frame; a continuous fiber printing mechanism is provided on the printing support frame, and a filament extrusion mechanism is provided next to the continuous fiber printing mechanism; the filament extrusion mechanism is connected to the printing support frame through a dual nozzle switching mechanism; a fiber guide block is provided below the continuous fiber printing mechanism; a speed feedback follower wheel is provided next to the fiber guide block; the speed feedback follower wheel is connected to a filament feeding fiber force control encoder; and the dual nozzle switching mechanism includes a horizontal guide rail, a push plate mounting plate, a positioning guide groove, a filament fixing plate, and a rear mounting plate. The dual printing head device achieves free switching between dual heads during printing, ensuring the stability of feeding continuous fibers.

A non-contact deposition system includes a jetting assembly including at least one microvalve. The microvalve includes an orifice plate defining an orifice therethrough. An actuation beam is disposed in spaced relation to the orifice plate. The actuation beam includes a base portion and a cantilever portion extending from the base portion toward the orifice and movable between a closed position and an open position. A seal structure including a sealing member is disposed at an overlap of the cantilever portion. A fluid manifold is coupled to the microvalve and defines a fluid reservoir containing a pressurized fluid. When the actuation beam is in the closed position, the cantilever portion is positioned such that the seal structure seals the orifice to close the microvalve, and in the open position, fluid is dispensed from the orifice toward a substrate and deposited thereon.

The invention refers to an apparatus for powder-based additive manufacturing of three-dimensional structures on a platform (4). The apparatus comprises a powder delivery mechanism (100) with a first powder chamber (11) for a first powder with a first powder outlet, and a second powder chamber (12) for a second powder with a second powder outlet. In addition, the powder delivery mechanism (100) comprises a gating mechanism (3) with a first slot (31) and a second slot (32), wherein the powder delivery mechanism (100) and / or the platform (4) are rotatable around a platform center axis (10) of the platform (4), wherein the gating mechanism (3) is arranged such that the first slot (31) defines an outlet surface of the first powder outlet and the second slot (32) defines an outlet surface of the second powder outlet, wherein the gating mechanism (3) is displaceable relatively to the first powder outlet and / or the second powder outlet.

Systems and methods are provided for improving existing 3D FDM printing technologies. A 3D printing process and a 3D printer are also provided. The 3D printer provides stronger adhesion between the layers of printed parts than current printers. This enhancement increases the tensile strength of 3D printed components in the direction perpendicular to the layers.