36results about "3D object support structures" patented technology

A high-precision 3D printer comprises a base, wherein a supporting plate is vertically fixed on the base; a workbench device moving in an X axis is arranged on the base; a printing mechanism is arranged on the supporting plate; the printing mechanism comprises an extrusion feeding device and a printing nozzle device; the extrusion feeding device comprises a fixing block; a connector and an extrusion wheel set are fixed to the upper end and the lower end of the fixing block respectively; the printing nozzle device comprises a throat pipe, a heating tube and a printing nozzle. The high-precision3D printer is reasonable and contact in structure; through the addition of an optical position detecting component into a motion control system and coordination of the workbench device and the printing mechanism, stepping motors in three directions are controlled by the same main control panel, and the main control panel is provided with a touch screen, so that the high-precision 3D printer is convenient and easy to operate and high in printing precision, has the advantage of lower cost than that of the conventional motion control system and can meet a requirement on the 40[mu]m printing precision; the high-precision control of the 3D printer is achieved, and the high-precision 3D printer is good in using effect and suitable for popularization.

The invention discloses a printing method of a 3D printer. The 3D printer at least comprises a first printing head and a second printing head, and consumables in the first printing head and the secondprinting head are different and are not bonded. The printing method of the 3D printer comprises the following steps that in the printing process, the current printing portion is monitored in real time; when the current printing portion is a to-be-printed part, the first printing head is adopted for printing; and when the current printing portion is the supporting face of the to-be-printed part, the second printing head is adopted for printing. The invention further discloses the 3D printer and a storage medium. In the technical scheme, the dual printing heads are adopted by the 3D printer forprinting; in the printing process, when the supporting face is printed, the consumables not bonded to the to-be-printed part are adopted for printing, and when the distance between the to-be-printedpart and a supporting body is too small, the supporting body can be removed easily; and therefore, the supporting body can be easily removed under the condition of not damaging part surfaces, and partintegrity is guaranteed.

The invention relates to a three-dimensional forming device and a three-dimensional forming method for powder. The three-dimensional forming device comprises a rigid substrate. A forming slot is formed in the rigid substrate, a Z-direction linear module is also arranged on the rigid base, the forming slot which is an annular forming slot is fixed to the rigid substrate through a turntable, the center of the annular forming slot and the rotating center of the turntable are superposed, and the turntable can drive the annular forming slot to rotate around the center of the turntable; a powder three-dimensional forming body is arranged in the annular forming slot, and a space between the powder three-dimensional forming body and the annular forming slot is filled with free powder; a cantileverbracket is arranged on a moving platform of the Z-direction linear module, a forming head assembly for constructing the powder three-dimensional forming body layer by layer is arranged at the tail end of the cantilever bracket, and the forming head assembly driven by the Z-direction linear module moves vertically and is positioned in the annular forming slot. The invention provides the high-efficiency three-dimensional forming device and three-dimensional forming method for powder, wherein the powder is not provided precisely layer by layer, no residual powder is generated in a powder pavinglink and selective formed parts can work continuously.

A smart part comprising: a body, manufactured by a three dimensional (3D) additive manufacturing (AM) process, having high-stress and low-stress sections, wherein when the smart part is in operational use the high-stress section is subjected to higher stress than the low-stress section; a resistive strain gauge embedded within the body during the AM process at the high-stress section, wherein the strain gauge is configured to produce a variable output; and a temperature sensor embedded within the body during the AM process at the low-stress section, wherein the temperature sensor is configured to produce a variable output based on temperature.

The invention discloses a method for removing a residual printing wire, a FDM printing device, a storage medium and a processor. The method for removing the residual printing wire comprises the stepsthat when a request for reprinting is received, a spray head leaves an original printing position and moves to a predetermined initial position; an instruction of heating the spray head is carried out, the spray head is heated to the temperature required to melt a printing wire, and then a first wire feeding instruction is carried out, and the first incoming printing wire extrudes the residual printing wire out of a molten cavity; then a second wire feeding instruction is carried out, and a second input printing wire extrudes a melted printing wire from the molten cavity after the first wire feeding; a pumpback instruction is carried out, and the printing wire is raised reversely; and a third wire feed instruction is carried out, a third input print wire begins to fill the molten cavity, and the spitting wire automatically falls from a nozzle. The residual printing wire is removed by using the characteristics of molten fluid and the gravity action, the molten cavity is filled, the residual printing wire not flowing out of the nozzle after reprinting is ensured, so that the scrapping of printed parts is avoided, and the qualified rate of products is improved.

An apparatus and method for removing support material from and/or smoothing surfaces of an additively manufactured part (the “AM part”) is disclosed. The apparatus may include a chamber, a support surface within the chamber, and one or more nozzles within the chamber. The nozzles may be the same size or different sizes. The support surface may be configured to support the AM part. The support surface may have one or more openings sized and configured to allow the fluid to pass through the opening(s). The nozzles may be configured to spray a fluid at the AM part, and the spray may be an atomized or semi-atomized spray of the fluid. For removing support material from parts with internal spaces, such as cavities or passages, the apparatus can include a nozzle at the end of an adjustable flexible hose member that can be adjusted to spray into an internal space of the part. Alternatively, for removing unwanted support material from multiple parts with internal spaces, the apparatus may include a submersion tank.

A 3D printer capable of achieving automatic cleaning comprises a 3D printer body, a blower, an air supply pipe, an adapting pipe, a water supply pipe, a flow division pipe, spray pipes, a connecting piece, a baffle, a receiving hopper, a support plate, a locating shaft, a support block, a connecting rod, a support rod, support legs, an open box, a baseplate and a limit rod; the upper end of each support leg is connected with the 3D printer body, and the lower end of each support leg is connected with the baseplate; the blower is arranged on the 3D printer body; the flow division pipe is arranged in the 3D printer body; the water inlet end of each spray pipe is connected with a water outlet of the flow division pipe; the air inlet end of the flow division pipe is connected with the air outlet end of the adapting pipe; the air inlet end of the adapting pipe is connected with the air support port of the blower; the water outlet end of the water supply pipe is connected with a water inletof the adapting pipe; a shell of the 3D printer body is provided with a through hole; and the baffle is arranged at the through hole. The 3D printer capable of achieving automatic cleaning has the effects of self-cleaning and high-efficiency printing.

The invention provides a preparation method of a 3D printing component and a 3D printing space component. The preparation method comprises the following steps of preparing 3D printing material granules, wherein the 3D printing material granules comprise a plurality of modified chopped fibers and components at least containing thermoplastic resin, an active group is grafted on the end surface of any of the modified chopped fibers, and the other parts except the end surfaces of the modified chopped fibers are coated with inert resin, and the inert resin and the active groups do not react; and conveying the 3D printing material particles into a nozzle to be fused and then squeezed out, and then on a pre-printing plane, carry out stacking and forming on the squeezed out fusant. According to the printing method of the 3D printing space component, prepared printing materials are improved, the concept of the reaction connection of the modified chopped fibers, namely, reinforced item fragments, is brought into continuous fiber reinforced thermoplastic material, so that on one hand, the advantages of continuous fibers in 3D printing can be achieved, and on the other hand, on the basis of keeping the advantages, printing and forming of a hollow structure or a spatial three-dimensional structure can be realized.

Disclosed are a 4D printing method using thermal anisotropy and thermal transformation, and the resulting product. The method includes (a) artificially planning transverse printing paths and longitudinal printing paths on a specimen to impose a thermal anisotropy to the specimen, (b) sequentially and alternately forming transversely printed layers and longitudinally printed layers on the specimen by printing a thermoplastic polymer in transverse and longitudinal directions to build a 3D printed product, (c) heating the 3D printed product so that the 3D printed product thermally transforms in a specific direction, and (d) controlling heating time to obtain a 4D printed product having a desired final shape which is formed through the transformation of the 3D printed product over the heating time.

The present invention provides an additive manufacturing arrangement comprising at least a first and a second additive manufacturing apparatus, each additive manufacturing apparatus comprising: a container for holding a radiation-curable liquid, a build platform having a build surface for holding a product to be manufactured during a manufacturing process, the build platform being movable relative to the container in a predetermined direction, a local radiation source configured to provide hardening radiation for selectively hardening radiation-curable liquid in the container to form the product; and the arrangement is characterized in that the arrangement comprises a first central radiation source configured to provide hardening radiation for selectively hardening radiation-curable liquid in the first and second container of the respective first and second additive manufacturing apparatus, and each local radiation source comprises a radiation input configured to receive hardening radiation from the first central radiation source and to emit at least part of said hardening radiation to selectively harden radiation-curable liquid in the corresponding container, and there is a first radiation splitter for splitting radiation from the first central radiation source into at least a first part and a second part, wherein the additive manufacturing arrangement is arranged to provide the first part to the radiation input of the first additive manufacturing apparatus and arranged to provide the second part to the radiation input of the second additive manufacturing apparatus.

The invention discloses a 3D printer facilitating cleaning of a guide pipe, and relates to the technical field of 3D printers. The 3D printer comprises a U shell, the top of the U shell is fixedly connected with a top plate, a first sliding rail is fixedly connected to the top of the inner surface of the U shell, a first connecting block is in sliding connection to the outer surface of the first sliding rail, the top of the first connecting block is fixedly connected with a second sliding rail, the outer surface of the second sliding rail is in sliding connection with a second connecting block, and the top of the second connecting block is fixedly connected with a first thread sleeve. According to the 3D printer facilitating cleaning of the guide pipe, cooperation of a feeding shell, a connecting column, a sliding part and a spring block is used for driving a ring external member to clamp and lock the guide pipe, detaching and mounting of the guide pipe are facilitated, the function that the guide pipe is convenient to dismount and is cleaned is achieved, and the problem that remaining liquid of a coating is attached to the inner wall of the guide pipe, and the printing effect is affected is solved.

The invention discloses a 3D printer. The 3D printer comprises a housing, a printing device, observing windows, arc-shape grooves, a door panel, a rotary shaft, a door panel magnetic absorbing piece,a door closing magnetic absorbing piece, a door opening magnetic absorbing piece, a supporting rail, a rolling wheel, a positioning groove, and a model loading platform, the printing device which is moved in X, Y and Z axis directions is arranged in the housing, the observing windows are arranged in the two sides of the housing, the arc-shaped grooves are formed in the four corners of the front face of the housing, the rotary shaft is molded at one end of the door panel from top to bottom, the door panel magnetic absorbing piece is fixed to the other end, the rotary shaft arranged from top tobottom of the door panel is slidably connected with the arc-shaped grooves at the upper and lower ends, the door closing magnetic absorbing piece and the door opening magnetic absorbing piece are fixed to the front edge of the housing and the side face from top to bottom, and the door panel magnetic absorbing piece is in magnetic suction connection with the door closing magnetic absorbing piece and the door opening magnetic absorbing piece. The 3D printer has the advantages that a model is conveniently taken out from the housing after being molded, plastic residues adhering to the loading platform are conveniently removed after the model is taken down, and the residues are prevented from remaining in the housing after cleaning.

The invention discloses a 3D breast printing device, and relates to the technical field of 3D printing. The 3D breast printing device comprises a printing supporting frame and a printer body, the printer body is located at the position, close to the top, of the center inside the printing supporting frame, the 3D breast printing device further comprises two first electric telescopic rods arranged on the lower inner wall of the printing supporting frame, and a printing base is fixedly connected between the output ends of the two first electric telescopic rods. According to the 3D breast printingdevice, a first motor rotates clockwise to drive a telescopic pipe to rotate, so that the telescopic pipe drives a roller wheel and a blade to rotate, when the first motor drives the roller wheel torotate, the roller wheel moves along the track of a limiting groove, the roller wheel gradually pulls the telescopic pipe open, the front and rear outer surfaces and the left outer surface of the blade are sharp, the pulled telescopic pipe gradually enables the blade to penetrate through the bottom of a breast mold to separate a printed breast from the printing base, then the first motor rotates in the reverse direction, the first motor retracts the blade through the limiting groove, and the 3D printing device can enable the printed breast mold to be automatically demolded.

The invention provides a preparation method of a ceramic material with a hollow tube micro-lattice structure. The method comprises the following steps: 1, preparing raw materials; enabling the modified ceramic precursor in the molten state to pass through a direct writing forming device; preparing a ceramic material with a three-dimensional lattice structure, printing in a protective atmosphere toobtain a rough blank with a three-dimensional lattice structure, carrying out incomplete cross-linking reaction on the rough blank with the three-dimensional lattice structure in a cross-linking atmosphere to obtain an incomplete cross-linked blank; and removing uncross-linked parts in the blank to obtain a hollow tube micro-lattice precursor bracket, and carrying out pyrolysis to obtain the hollow tube micro-lattice structure ceramic material. The ceramic material with a unique structure is obtained by combining an additive manufacturing technology with subsequent heat treatment, so that thedefects of high manufacturing cost and complex process of the conventional hollow tube micro-lattice material are overcome, and the thickness of the tube wall is regulated and controlled between 1 micron and 100 microns. The low density of the material is ensured, the high strength, high hardness, excellent chemical stability and thermal stability of the ceramic are maintained, and the ceramic sample piece with various structures and complex shapes is obtained.

The invention discloses a continuous carbon fiber 3D printing selective intermittent feeding device. The feeding device comprises a first guide wheel, a second guide wheel, a first driving mechanism and a second driving mechanism, wherein one side of a peripheral surface of the first guide wheel is arranged opposite to one side of the peripheral surface of the second guide wheel, and the axis of the first guide wheel is parallel to the axis of the second guide wheel; the second driving mechanism can drive the opposing faces of the first guide wheel and the second guide wheel to approach/separate from each other. The wire rod (3D printing raw material) passes through an area between the first guide wheel and the second guide wheel, and is guided to a printing nozzle through the power of first guide wheel or/and the second guide wheel, and when the wire rod is bonded with a workstation, the second actuating mechanism drives the opposite faces of first guide wheel and second guide wheel to keep away from each other, the first driving mechanism is shut down, and the wire rod can be continuously pulled out passively along with the movement of the printing nozzle at the moment, thereby switching the active feeding into passive feeding.

The invention discloses a material extrusion type 3D printing method, and relates to the technical field of additive manufacturing, and the material extrusion type 3D printing method comprises the following steps that a supporting material and printing slurry are prepared separately, the printing slurry is inorganic non-metal resin-based slurry or metal powder resin-based slurry, so that the printing slurry is suspended in the supporting material, and the supporting material is prepared; the solid content of the printing slurry is greater than or equal to 40%; a supporting material is loaded into a container, and the container loaded with the supporting material is placed on a printing platform; printing slurry is extruded from the supporting material in the container through a 3D printer based on a preset target design model; and determining a target curing treatment mode according to the light transmission of the support material, and performing curing treatment on the printing slurry according to the target curing treatment mode to obtain a target model. The technical problem that in the prior art, due to limitation of material extrusion type 3D printing on printing materials, the performance of the printing materials is poor is solved.

The invention discloses a vibration-absorption and refrigeration working box of a 3D (Three Dimensional) printing machine. The vibration-absorption and refrigeration working box comprises an outer boxbody and an inner box body, wherein the outer box body sleeves the inner box body; the working box is divided into two layers of box bodies; a box body part is provided with a retractable rod; the retractable rod is used for stabilizing the inner box body and certain floating of moving up and down can be regulated and controlled; a spring has the effect of regulating and controlling the up-down floating; furthermore, flowable ice water is filled in an interlayer of the box body and a buffering layer is formed so that the transmission of vibration between the box bodies is stopped; the influences, caused by vibration of a motor, on a printing effect are reduced at maximum. Furthermore, cold air cooled above the ice water is blown onto a hoisting platform through an air blower and the temperature of the part of air is lower than common air temperature, so that the cooling effect is better.

The invention relates to wire shearing type double-nozzle carbon fiber 3D printing equipment and a using method thereof. The wire shearing type double-nozzle carbon fiber 3D printing equipment comprises an upper beam assembly and a lower beam assembly which are arranged in an up-down spaced mode and are both of frame-shaped structures, stand columns are jointly installed at the four corners of the upper beam assembly and the four corners of the lower beam assembly to form a rack, a Y-direction moving assembly is installed on the upper beam assembly, an X-direction moving assembly moving in the Y direction of the Y-direction moving assembly is installed on the Y-direction moving assembly, a spray head assembly moving in the X direction of the X-direction moving assembly is installed on the X-direction moving assembly, a printing table board is installed under the spray head assembly at an interval, the printing table board is driven by a lifting driving assembly to ascend and descend, two downward printing heads are arranged in the spray head assembly side by side, and the equipment further comprises two wire feeding mechanisms which are used for feeding wires to the two printing heads respectively. The double-nozzle carbon fiber 3D printing equipment is high in printing speed, flexible in printing and high in precision, has wire shearing and compacting functions, greatly facilitates 3D printing and is good in practicability.

An additive manufacturing system is disclosed that comprises two or more lasers for precisely heating a fiber-reinforced thermoplastic feedstock and a fiber-reinforced thermoplastic workpiece in preparation for depositing and tamping the feedstock onto the workpiece. The system employs feedforward, a variety of sensors, and feedback to ensure that the feedstock and workpiece are properly heated.

The invention discloses a movable 3D printing system composed of a 3D printer, a mechanical pan-tilt, spring fixators, a 3D printer mounting platform, a pan-tilt mounting base and a transport carrier.The 3D printer mounting platform is mounted at the top of the mechanical pan-tilt. The 3D printer is placed on the 3D printer mounting platform, and the spring fixators at the four corners of the platform enable the 3D printer to be fixed to the center of the 3D printer mounting platform. The mechanical pan-tilt is connected with a bearing back frame or a warehouse bottom plate of a transport tool through the pan-tilt mounting base. When the transport tool is turned, accelerated, decelerated and rise or fall, an included angle is formed between the normal direction and the gravity direction of the warehouse bottom plate; or when a human body leans forward, bends down and shakes, a dip angle is formed between the normal and the gravity direction of a bottom plate of the bearing back frame.The mechanical pan-tilt conducts motion compensation on the 3D printer mounting platform so that the normal direction and the gravity direction of a 3D printing forming platform are always overlapped, and stable work of the 3D printer in the motion process is maintained.

The invention provides a marine navigation device composite structure and an additive manufacturing method thereof, and the marine navigation device composite structure is a structure prepared by constructing a three-dimensional model of a marine navigation device and utilizing an electric arc additive manufacturing technology and a fused deposition modeling technology on the basis of recognizable data commands converted from the three-dimensional model. The structure comprises a marine navigation device base body, a marine navigation device inner layer and a marine navigation device outer layer. By means of the method, the marine navigation device which is light in weight, high in strength, resistant to impact and high in toughness and corrosion resistance is prepared.