922results about "Manufacturing heating elements" patented technology

An extruder for an additive manufacturing machine has a first and second extrusion duct (6, 7) separated from each other; a first and a second feeding system (8, 9), configured to feed a first and a second material into the first and the second extrusion duct (6, 7); a first and a second heating assembly (10, 11) configured to heat the first and the second material so as to determine the melting of the first and the second material; a mixing chamber (12), which is configured to allow the mixing of the first and of the second melt material exiting from the first and from the second extrusion duct (6, 7); and a control unit (14), configured to independently control the first and the second feeding system (8, 9) and the first and the second heating assembly (10, 11).

The invention relates to the technical field of powder bed heating, and discloses a powder bed heating method of additive manufacturing equipment, the powder bed heating method of the additive manufacturing equipment is realized based on a powder bed heating unit of the additive manufacturing equipment, and the powder bed heating unit of the additive manufacturing equipment comprises a handle bottom plate for providing a basic mounting platform for the whole device; a push-pull type local heating design is adopted for the device, a traditional overall preheating mode is replaced, energy consumption and the equipment use cost are greatly reduced, meanwhile, heat loss is reduced, the heating efficiency is improved, and through cooperation of double positioning and a real-time temperature control system, the energy-saving and environment-friendly effects are achieved. The accurate position of the heating unit is guaranteed through mechanical limiting and sensor detection, high-precision temperature control adjustment is matched, it is guaranteed that the temperature of the powder bed is stabilized within the preset range, part defects caused by temperature fluctuation are avoided, and the forming quality and the mechanical property stability of workpieces are remarkably improved.

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.

The utility model discloses a hot bed and a 3D printer, and relates to the technical field of 3D printing, the hot bed comprises a printing platform, a support frame and a locking assembly, the printing platform is provided with a printing plane used for bearing a printing piece; the supporting frame is arranged on the side, back to the printing plane, of the printing platform, the supporting frame and the printing platform are arranged at intervals in the first direction and elastically connected through an elastic piece, and the first direction is perpendicular to the printing plane; the locking assembly is arranged on the printing platform and provided with a friction face abutting against the supporting frame, the friction face is parallel to the first direction, friction force parallel to the first direction exists between the friction face and the supporting frame, and the friction force is used for limiting relative movement of the printing platform and the supporting frame in the first direction. According to the technical scheme, the connecting structure of the hot bed is simplified, and the leveling efficiency of the hot bed is improved.

The utility model provides a consumable melting assembly for a 3D printer, a nozzle and the 3D printer, the consumable melting assembly comprises a heating body, and a first heating runner and a second heating runner are arranged in the heating body in the axial direction of the heating body; the second heating runner is arranged in the first heating runner, the second heating runner is in an inverted cone shape in the direction from a consumable inlet to a consumable outlet, a melting runner is formed between the outer wall of the second heating runner and the inner wall of the first heating runner, a plurality of through holes are formed in the second heating runner, and the through holes are communicated with the melting runner. And the second heating runner is communicated with the melting runner through the through hole. The resistance of the consumable passing through the flow channel is reduced, the distance between the consumable melting assembly and the inner core of the consumable is shortened, the inner core of the consumable can be quickly melted, the problem that the nozzle is blocked is effectively avoided, and meanwhile the stability of the outlet flow of the nozzle and the printing speed of the 3D printer are effectively improved.

The utility model discloses a hot bed and a 3D printer. The hot bed comprises a bed plate and a heating device, the supporting piece is arranged on one side of the bed board; the elastic leveling device is connected with the bed board and the supporting piece and is used for adjusting the flatness of the bed board; the locking assembly is connected with the bed board and the supporting piece and used for locking the position of the bed board relative to the supporting piece after the bed board is leveled. According to the hot bed in the embodiment, the locking assembly is used for locking the position of the bed board relative to the supporting piece after the bed board is leveled, so that deformation and displacement of the bed board can be reduced, the overall rigidity of the hot bed is improved, and then the printing quality of the 3D printer is improved.

This invention relates to an apparatus and method for fabricating microanodes using localized electrochemical deposition additive manufacturing, belonging to the fields of 3D printing technology and electrochemical deposition. The y-axis moving device is threadedly connected to the frame assembly, and the dual-nozzle device is also threadedly connected to the y-axis moving device. The z-axis moving device is fixed to the frame assembly, and the heated bed platform is fixed to the z-axis moving device. An inert metal wire cutting device is installed on the connecting shaft between the z-axis moving device and the heated bed platform. The advantages are: it automates the fabrication of microanodes using localized electrochemical deposition additive manufacturing, improving the efficiency of microanode fabrication and saving manpower, material resources, and financial resources; it solves the difficulties of traditionally using capillary glass tubes to encapsulate extremely fine inert metal wires, allowing for convenient encapsulation of inert metal wires with diameters below 20 micrometers; it utilizes laser cutting for post-processing the electrode, avoiding the difficulty of grinding a smooth electrode surface; and the electrode shape can be designed by computer, without shape limitations.

An extruder head assembly, which is for an additive manufacturing machine, includes a melt zone component, and a nozzle operatively connected to the melt zone component. The melt zone component is operatively connected to a cold end component for receiving and heating filament. The melt zone component includes a heat source, and an interior member in thermal communication with the heat source. The interior member defines therein a passage, at least one melt channel, and at least one aperture fluidly connecting the passage to the at least one melt channel. The passage and the at least one melt channel are fluidly connected downstream from the at least one aperture, the nozzle being configured to receive heated filament material from the passage and the at least one melt channel.

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 invention discloses an additive manufacturing powder bed preheating system and method based on hot air-partition radiation synergy. The additive manufacturing powder bed preheating system comprises a preheating outer box, a powder bed, a hot air circulating system, a partition radiation heating system and a layering synergy controller. The method has the beneficial effects that an upper-layer steady-state optimization and lower-layer dynamic compensation framework is adopted, wherein the upper layer aims at energy efficiency and temperature uniformity, and the temperature and the air speed of a hot air inlet are optimized; and the lower layer is based on real-time temperature feedback, the partition radiation power is adjusted through a feedback + feedforward decoupling algorithm, local temperature disturbance is compensated, hot air rapidity and partition radiation accuracy are fused, the problems of response lag, space coupling and laser preheating cooperation deficiency are solved, rapid, uniform and dynamic regulation and control of the temperature field of the powder bed are achieved, the additive manufacturing quality is improved, and the production efficiency is improved. The method is suitable for high-precision manufacturing of various high polymer materials.

The utility model discloses a hot bed and 3D printer relates to 3D printing technical field, the hot bed includes shell and heating module, the shell is equipped with the cavity, forms the power supply area in the cavity, the power supply area deviates from the middle area of the cavity, the shell is used for bearing the printing panel; the heating module comprises a plurality of heating units, the two ends of each heating unit are connected to the power supply area, and the heating units form an annular structure. The technical scheme provided by the utility model aims to improve the heating efficiency of the hot bed.

The present invention discloses a 4D printing method, apparatus, and application thereof, including processes such as proportioning of multi-viscosity liquid components, flow mixing, degassing, temperature-controlled curing, filling, and final curing. Based on an integrated molding design concept, the method enables the preparation of pneumatically driven, self-propelled, deformable bionic structures (referred to as "bionic deformable actuators"). The apparatus and method of the present invention can produce functional components made of elastic, flexible materials with a viscosity range of 2,000 to 38,000 cps. This greatly simplifies the preparation process of bionic deformable actuators, enabling direct printing and single-stage molding without the need for secondary processing.

The utility model discloses a printing platform assembly and three-dimensional forming equipment, which can realize the release of the swelling amount of a hot bed substrate through the relative movement between the bracket or the hot bed substrate and the first connecting piece mainly through a movable space between the first connecting piece and at least one of the hot bed substrate and the bracket. According to the main technical scheme, the printing platform assembly comprises a hot bed base plate; a bracket; the first connecting pieces are connected with the hot bed base plate and the support respectively, a movable space is formed between at least one of the hot bed base plate and the support and the first connecting pieces, and the movable space is used for avoiding expansion deformation of the hot bed base plate. The utility model is mainly used for connecting models.

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.

The invention relates to the technical field of 3D printing temperature control, and particularly discloses a 3D printer hot bed temperature closed-loop control method and system based on a PID (Proportion Integration Differentiation) algorithm. The method comprises the following steps: acquiring a temperature change trend prediction parameter based on multi-point temperature data and temperature change historical data, dynamically optimizing a PID parameter reference value according to the parameter to obtain an adaptive PID parameter, and performing online adaptive adjustment on the hot bed temperature according to the adaptive PID parameter, including converting a control output value into a pulse width modulation signal to adjust the overall heating power. And dynamically allocating partition power based on the trend vector, and switching the heating mode according to the dynamic stage. On-line real-time self-adaptive optimization of PID parameters is achieved, the problems of heating overshoot and slow cooling caused by dynamic asymmetry of a hot bed can be solved, temperature field distribution uniformity is improved, and adaptability to different printing working conditions and temperature control precision are improved.

A method of operating an apparatus for the layerwise manufacture of 3D objects. The method includes two or more operational cycles of a warm up phase, starting from ambient, followed by a build phase and a cooling phase. The warm up phase and the build phase each include a layer cycle of: (a) dosing build material to the work surface; (b) distributing a portion of the dosed amount over a build area; (c) heating the dosed amount; and (d) monitoring a temperature of the build material to determine a thermal state. The build phase includes melting layer-specific regions. These steps are repeated until the warm up and build phases are completed. A property of the subsequent warm up phases is determined such that the duration of a subsequent warm up phase is shorter than the duration of a preceding warm up phase.

The utility model relates to the technical field of 3D printing equipment, in particular to a platform heating and temperature equalizing system for an advertisement word 3D printer, which comprises a vapor chamber, a circulating fan, a heater and a cooling fan, the vapor chamber is positioned below a printing platform, the circulating fan and the heater are mounted in a closed chamber below the vapor chamber, and the cooling fan is mounted in the closed chamber. The circulating fan is used for transferring heat generated by the heater to the vapor chamber so that the printing platform can be heated to the preset working temperature, and the cooling fan is used for removing redundant heat in the closed cavity when the temperature needs to be reduced. The effects of rapid and uniform heating and effective temperature control are achieved, and the printing quality and efficiency are improved.

The invention provides a radio frequency assisted continuous fiber composite 3D printer and a printing method thereof, and relates to the technical field of 3D printing. The radio frequency assisted continuous fiber composite material 3D printer comprises a printing platform, a 3D printer body and a control system, wherein the printing platform is used for placing and fixing a printing material; the printing spray head is used for spraying a printing material to the printing platform; the driving device is used for driving the printing nozzle to move along a preset path; and the first heating assembly is used for continuously heating the printing material which leaves the printing nozzle and does not fall onto the printing platform and the printing piece, so that the temperature difference between the printing material and the printing piece is reduced. According to the radio frequency assisted continuous fiber composite material 3D printer, the bonding force between printing materials / layers is remarkably improved, the buckling deformation degree of a printed piece is reduced, and then the stability, the mechanical performance and the appearance quality of the printed piece are improved.

The present disclosure includes a multi-fluid kit for three-dimensional printing. The multi-fluid kit can include a fusing agent comprising water and a radiation absorber that absorbs radiation energy and converts the radiation energy to heat, an acidic agent having a pH from about pH 1 to about pH 6.9 that includes water and an acidic component, and a pore-promoting agent including water and a pore-promoting compound. The pore-promoting compound can chemically react with the acidic component to generate a gas, and can be selected from sodium bicarbonate, potassium bicarbonate, or a combination thereof.

An additive manufacturing device includes a stage configured to support a substrate. The device also includes a printhead disposed above the stage. The printhead is configured to heat a build material to a molten build material and to deposit the molten build material on the substrate in the form of droplets to fabricate an article. The device also includes a controlled heating and ablation system disposed proximal the printhead. The controlled heating and ablation system is configured to heat the substrate and ablate oxides on a surface of the substrate.

A discharge nozzle (10) is configured to discharge at least one plasticized, tempered, and solidifiable material (20) into a build space (30) for producing a three-dimensional object (40) by means of additive manufacturing, wherein the discharge nozzle (10) has a body (12) through which the plasticized and tempered material (20) flows. The discharge nozzle (10) is at least partially surrounded by at least one nozzle insulation (70'). A device (100) is provided for producing a three-dimensional object (40) by means of additive manufacturing by discharging at least one plasticized, tempered, and solidifiable material (20) into a build space (30) using a corresponding discharge nozzle (10).

The utility model discloses a photo-curing 3D printer printing bin constant temperature mechanism, and relates to the technical field of photo-curing 3D printers, the mechanism comprises a printer body, a printing bin is arranged in the printer body, a placing box used for placing resin materials is arranged in the printing bin, one side of the printer body is hinged with a heat insulation door, and the other side of the printer body is hinged with a heat insulation cover. The device further comprises a heating assembly and ventilation assemblies, the heating assembly is arranged at the lower end of the containing box and used for heating the photosensitive resin material, and the ventilation assemblies are arranged at the left end and the right end of the printing bin and used for improving the cooling effect. The temperature rising assembly is arranged, the internal environment of the printing bin can be integrally heated, the surface of the containing box can be heated, then resin materials can rapidly reach the proper temperature, the ventilation assembly is arranged, efficient ventilation and heat dissipation treatment is conducted on the interior of the printing bin, and when the temperature is about to exceed the optimal interval value, the draught fan is started, and the heat dissipation efficiency is improved. And the cooling operation can be quickly carried out.

The invention discloses a multi-heat-source digital twin model automatic optimization and decoupling control method and system, and the method comprises the steps: constructing a local two-dimensional plane coordinate system, obtaining the end point coordinates of heat sources, and calculating the heat radiation intensity of the heat sources to a target point; establishing a geometric parameter model of the additive manufacturing multi-heat-source system, and establishing a radiation field response model of the multi-heat-source system based on a linear superposition principle; according to the heating requirement of additive manufacturing, a target heat radiation field is designed, optimal power distribution of the target heat radiation field is calculated, and optimal heat source structure parameters are determined based on geometric constraints of a physical basis; and according to the optimal heat source structure parameters, a decoupling control rule is designed, and heat source power is adjusted according to feedback data to compensate deviation. According to the method, the point heat source, the line heat source and the plane heat source are abstracted into the line heat source in a unified mode, a universal frame is provided for digital modeling of a complex multi-heat-source system, and the complexity of modeling for different heat source types is avoided.

The application discloses a kind of short-range extrusion device and working method for realizing multicolor mixing, solve the printing precision of prior art long-range feeding printing device, the movement precision of short-range feeding printing device is low, with the beneficial effect of improving printing precision, specific scheme is as follows: a kind of short-range extrusion device for realizing multicolor mixing, including driving module, feeding extrusion module, color mixing proportion control module and mixed extrusion module connected in sequence, power assembly is provided with multiple output shafts, each output shaft is respectively matched with corresponding feeding component, feeding extrusion module includes feeding fixed seat, feeding fixed seat supports tensioning mechanism, the clamping force between feeding component and tensioning mechanism is adjustable, multiple coaxial baffles are arranged between color mixing proportion control module and mixed extrusion module, the baffle is provided with the shielding groove that can be communicated with melt cavity, the baffle can be rotated so that the shielding groove shields part of melt cavity to realize flow regulation.

The invention discloses an automatic leveling and height adjusting device for a 3D printer and a control circuit thereof.The automatic leveling and height adjusting device comprises a hot bed, springs are arranged below the four corners of the hot bed, a piezoelectric sensor is arranged below the hot bed, and the piezoelectric sensor is connected with an input channel of a main control panel; the piezoelectric sensor is provided with a vibration sensing mechanism or a pressure sensing mechanism. The invention belongs to the field of FDM 3D printing, and particularly relates to an automatic leveling and height adjusting device of a 3D printer and a control circuit of the automatic leveling and height adjusting device. A plurality of piezoelectric ceramic vibration sensing modules are arranged between a bearing base on a machine body and a printing platform, a control panel receives signals of a plurality of sensors for comprehensive analysis and comparison through vibration or pressure generated instantly when a printing nozzle touches the printing platform, and the signals are fed back to a printer mainboard to generate net bed compensation; and meanwhile, automatic height alignment of the full-breadth spray head is achieved, the mainboard controls the motor to automatically ascend and descend to compensate the height of the net bed according to detection data during printing, and the automatic leveling function is achieved.

To provide a technology that can suppress uneven heating when heating a molded object by a heating section.SOLUTION: The three-dimensional molding device comprises: a first heating section in a plate shape that has a heating surface for heating plasticization materials laminated on a stage, and has a through hole formed inside which at least a portion of the nozzle is positioned during molding of the three-dimensional molded object; a measurement section having a first sensor for measuring the position of the heating surface; and a control section. The heating surface includes a first heating area and a second heating area. The first heating section has a first heater section arranged corresponding to the first heating area and a second heater section arranged corresponding to the second heating area. The control section performs a first process of setting the output of the first heater section to be smaller than the output of the second heater section when, based on the measurement of the position of the heating surface, the distance between the first heating area and the stage is determined to be a first distance, and the distance between the second heating area and the stage is determined to be a second distance greater than the first distance.SELECTED DRAWING: Figure 1

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.

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).

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