WO2017206128A1 - Tête d'impression pour impression 3d, système de commande, imprimante 3d et procédé d'impression - Google Patents

Tête d'impression pour impression 3d, système de commande, imprimante 3d et procédé d'impression Download PDF

Info

Publication number
WO2017206128A1
WO2017206128A1 PCT/CN2016/084393 CN2016084393W WO2017206128A1 WO 2017206128 A1 WO2017206128 A1 WO 2017206128A1 CN 2016084393 W CN2016084393 W CN 2016084393W WO 2017206128 A1 WO2017206128 A1 WO 2017206128A1
Authority
WO
WIPO (PCT)
Prior art keywords
nozzle
screw
print head
cylinder
section
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2016/084393
Other languages
English (en)
Chinese (zh)
Inventor
陈名乔
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Wanwei Im Technology Co Ltd
Original Assignee
Shenzhen Wanwei Im Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Wanwei Im Technology Co Ltd filed Critical Shenzhen Wanwei Im Technology Co Ltd
Priority to PCT/CN2016/084393 priority Critical patent/WO2017206128A1/fr
Publication of WO2017206128A1 publication Critical patent/WO2017206128A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y10/00—Processes of additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y50/00—Data acquisition or data processing for additive manufacturing
    • B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

Definitions

  • the present invention relates to the field of 3D printing technologies, and in particular, to a 3D printing print head, a control system for controlling the 3D printing print head, a 3D printer using the 3D printing print head, and a Kind of printing method.
  • 3D printing is a technique for manufacturing a three-dimensional product by layer-by-layer addition of materials by a 3D printing device according to a designed 3D model.
  • This layer-by-layer stack forming technique is also referred to as additive manufacturing.
  • 3D printing combines cutting-edge technologies in digital modeling technology, electromechanical control technology, information technology, materials science and chemistry, etc. It is a kind of rapid prototyping technology and is known as the core technology of the "third industrial revolution”.
  • 3D printing does not need to make molds in advance, it does not have to remove a large amount of materials in the manufacturing process, and the final product can be obtained without complicated forging process. Therefore, structural optimization and material saving can be achieved in production. save energy.
  • 3D printing technology is suitable for new product development, rapid single and small batch parts manufacturing, complex shape parts manufacturing, mold design and manufacturing, etc. It is also suitable for the manufacture of difficult materials, shape design inspection, assembly inspection and fast reverse Seeking engineering and so on. Therefore, the 3D printing industry has received more and more attention at home and abroad, and will become the next sunrise industry with broad development prospects.
  • 3D printing has been applied in the fields of product prototyping, mold making, artistic creative products, jewelry making, etc., and can replace the traditional fine processing technology that these fields rely on.
  • the introduction of 3D printing technology has opened up a broader space for development.
  • the printer maintains rigidity to maintain accuracy in order to support heavier printheads, and the printer becomes very cumbersome, so there is an urgent need to reduce the weight of the printhead; at the same time, the bulk of the printhead is greatly reduced.
  • the effective stroke, especially in the height direction, is particularly conspicuous. Therefore, the weight and volume of the print head are urgently required to be lighter and smaller, and the weight reduction and miniaturization of the print head further reduce the manufacturing cost of the industrial grade 3D printer.
  • the print head designed according to the prior art has a long length and a large self-weight, which makes the 3D printer bulky and has high energy consumption, and these problems need to be solved urgently.
  • the object of the present invention is to overcome the above-mentioned deficiencies of the prior art and provide a multi-rotation extruder for 3D printing, which has the advantages of small length, low energy consumption, reduced heat dissipation area, high heating efficiency, stable output flow, and the like.
  • the present invention provides a print head for 3D printing, including:
  • a casing one end of the casing is provided with a driving system
  • a screw extrusion system the screw extrusion system is disposed in the casing, the screw extrusion system is composed of at least two screws that are nested inside and outside, wherein at least one screw is driven by the drive system Drive
  • the telescopic nozzle valve is disposed below the screw extrusion system, and the material extruded by the screw extrusion system flows out through the telescopic nozzle valve.
  • the telescopic nozzle valve comprises:
  • a mounting seat the mounting seat is detachably mounted under the screw extrusion system; one or a plurality of inner holes are distributed in the lower portion of the lower portion of the mounting seat, and the upper end of the mounting seat is provided a discharge manifold, wherein the discharge ports are respectively communicated with an upper end of each inner hole, and a lower end of the inner hole is an opening;
  • a cylinder the cylinder is movably mounted in an inner hole of each of the mounts, the cylinder protrudes from an open end of the inner hole of the mount, and the top end of the cylinder is provided with a cylinder a body inlet; the cylinder is a hollow valve cavity;
  • valve needle the valve needle is assembled on the mounting seat through a valve cavity of each of the barrels;
  • a nozzle the nozzle is disposed at an end of each of the barrel extending from one end of the mounting seat, and the nozzle tail is provided with a nozzle hole; [0018] wherein a gap between the valve needle and the valve cavity forms a discharge passage, the discharge passage is in communication with a discharge manifold, and the nozzle hole is in communication with the discharge passage.
  • the multi-channel telescopic nozzle ⁇ is used.
  • the telescopic nozzle valve further comprises a hollow tuyere structure
  • the tuyere structure sequentially from top to bottom, the tuyere sealing section, the outlet section; the nozzle is divided into a nozzle sealing section and a nozzle protrusion section that cooperate with the tuyere sealing section from top to bottom;
  • the tuyeres are circumferentially mounted on the outside of the nozzle, and the tuyere structure is provided with an air inlet passage for supplying air to the tuyere structure.
  • the air inlet passage is disposed at an upper side or a top portion of the tuyere sealing section, and when the nozzle moves upward to the sliding nozzle sealing section and the nozzle sealing section, the sliding sealing seal is The air inlet passage is unable to discharge air to the air outlet section, and when the nozzle moves downward until the tuyere seal section is disengaged from the nozzle sealing section, the tuyere seal section and the nozzle sealing section are separated from each other to form a ventilation space, wherein the air inlet passage passes through the ventilation space to the wind outlet section.
  • the lateral width of the nozzle protrusion segment is smaller than the opening width of the air outlet portion of the tuyere structure to form an air outlet gap.
  • the nozzle protrusion segment is tapered or hemispherical.
  • the air nozzle structure is divided into a wind nozzle avoiding section, a tuyere sealing section and an air outlet section from top to bottom; [0026] the nozzle is divided into a nozzle avoiding section from top to bottom. a nozzle sealing section and a nozzle protrusion section that cooperate with the tuyere sealing section;
  • a partial contact between the nozzle avoidance section and the air nozzle avoidance section is partially avoided, and the contact part is used for guiding, and the partial avoidance part is for ventilation.
  • the inner contour of the air nozzle avoidance section is a cylindrical surface
  • the outer contour of the nozzle avoidance section is an arc surface disposed at an axial interval
  • the cylindrical surface is tangent to the curved surface to form a contact surface.
  • a non-contact surface between two adjacent contact faces, and an air outlet space is formed between the non-contact surface and the inner contour of the air nozzle avoidance section.
  • the inner contour of the air nozzle avoidance section is a cylindrical surface
  • the outer contour of the nozzle avoidance section has a plurality of side edges spaced apart from each other in the axial direction, and the cylindrical surface is in contact with the side ridge line,
  • An air outlet space is also formed between the nozzle avoiding section and the air nozzle avoiding section.
  • the inner contour of the air nozzle avoidance section is a cylindrical surface
  • the outer contour of the nozzle avoidance section has a winding A spiral wind groove in which the axis is spirally arranged and spaced in the circumferential direction.
  • an outer contour between the nozzle sealing section and the nozzle protrusion section is further provided with a rib which facilitates tightening the nozzle by using a standard wrench.
  • the screw extrusion system includes a first-stage screw, a second-stage screw, and a third-stage screw from the outside to the inside; respectively; the first-stage screw, the second-stage screw, and the third-stage screw are respectively provided with cavities;
  • the helix angle of the first screw is smaller than the helix angle of the second screw, and the helix angle of the second screw is smaller than the helix angle of the third screw;
  • a first-stage hot runner is formed between the casing and the first-stage screw, and a secondary hot runner is formed between the secondary screw and the primary screw, and the third-stage screw and the secondary screw are formed.
  • the intersection of the secondary hot runner and the tertiary hot runner is provided with micropores for discharging the material to generate gas.
  • the tertiary hot runner is part of a screw extrusion system and extends to a discharge manifold, the tertiary hot runner is a discharge section discharged from the screw extrusion system, and a tertiary hot runner It is the feed section that feeds the telescoping nozzle valve.
  • the theoretical extrusion amount of the material in the primary hot runner is greater than the theoretical basic amount of the material in the secondary hot runner, and the theoretical extrusion amount of the material in the secondary hot runner is greater than that of the material in the tertiary hot runner.
  • the theoretical amount of extrusion wherein the theoretical amount of extrusion of the material in the tertiary hot runner is within the threshold of the nominal extrusion amount of the material.
  • the primary screw is driven by a driving system; the secondary screw is fixedly connected to the casing.
  • the cross-sectional area of the primary hot runner and the second or second hot runner and/or the tertiary hot runner gradually decreases along the flow direction of the material.
  • the lower side of the three-stage screw is further provided with a pressure sensor and a flow sensor, respectively.
  • one side of the casing is provided with a raw material feeding port, and the raw material feeding port is further connected to a feeding system, the feeding system is a pneumatic feeding system, and the pneumatic feeding is The system transports the granular or powdered material to the raw material feed inlet and sequentially passes through the primary hot runner, the secondary hot runner, the tertiary hot runner, the discharge manifold, the cylinder inlet, the discharge passage, and the nozzle. hole.
  • the driving system is a geared motor; the geared motor is detachably connected to the first stage screw through a flange.
  • the cylinder body is axially moved in the inner hole of the mounting seat by means of fluid force transmission; [0044] the inner hole is in contact with the outer circumference of the upper section of the cylinder and the outer circumference of the lower section An upper seal and a lower seal filled with a sliding sealing material are respectively disposed; the middle portion of the cylinder between the upper seal and the lower seal further has a cylindrical cylinder acting as a piston; At least one annular groove is disposed on the side wall of the cylindrical body; the annular groove is filled with a sliding sealing material to seal the barrel to the mounting seat; [0045] the cylindrical body is sealed with the upper portion There is a first fluid chamber between the pieces, and a second fluid chamber is between the cylinder cylinder and the lower seal;
  • the upper portion of the cylinder body is provided with a limiting through groove, and the limiting through groove is slidably engaged with the limit button on the top side of the valve needle for aligning the inlet port of the cylinder with the discharge opening.
  • the first fluid chamber is connected to the first fluid valve through the first fluid through hole; and the second fluid chamber is connected to the second fluid valve through the second fluid through hole.
  • the sliding sealing material is expanded graphite.
  • the head or one side of the valve needle is fixed to the mounting seat by at least two positioning bolts.
  • the casing and the outer side of the mounting seat are provided with electric heating devices.
  • the cylinder is provided with four, and the valve needle matched with the cylinder is also provided with four.
  • the mounting seat segment is disposed, and the adjacent two segments are fixedly connected.
  • the present invention also provides a control system for implementing automatic control of a print head for 3D printing, including:
  • a temperature control system the temperature control system is electrically connected to the control circuit
  • a pressure sensor the pressure sensor is electrically connected to the control circuit
  • a flow sensor the flow sensor is electrically connected to the control circuit
  • a drive system the drive system is electrically connected to the control circuit
  • the temperature control system controls the melting state of the material through feedback adjustment
  • the pressure sensor and the flow sensor monitor the pressure and flow parameters of the molten material at the outlet of the third-stage hot runner and return it to the control circuit, and the control circuit Adjusting the power output parameters of the drive system according to the pressure and flow parameter feedback, so that the actual flow rate of the molten material flowing out of the nozzle is within a preset flow threshold range
  • the control circuit Adjusting the power output parameters of the drive system according to the pressure and flow parameter feedback, so that the actual flow rate of the molten material flowing out of the nozzle is within a preset flow threshold range
  • the present invention also provides a 3D printer including a gantry on which at least one 3D printing printhead as described above is provided.
  • This printer employs the 3D printing print head of the present invention.
  • the 3D printing print head is divided into a windless nozzle and a wind nozzle.
  • an air flow passage may be disposed on the mounting seat, and an annular air chamber is disposed on the inner side wall of the inner hole, and the pressure gas is introduced into the annular air chamber through the air flow passage, and the pressure of the pressure gas is higher than the pressure of the molten material in the third-stage hot runner.
  • the 3D printing print head of the present invention is divided into two types without a separate air seal and a single air seal depending on whether or not it has a separate airtight performance.
  • the first fluid chamber and the second fluid chamber may also function as a gas seal when a gas or liquid is introduced.
  • four types of print heads for 3D printing are produced, namely no air nozzle and no separate air seal, no air nozzle and separate air seal, air nozzle and no
  • a feed taper is formed on the casing of the spiral extrusion system, and the feed taper is disposed on the casing and adjacent to the feed end of the primary screw to increase the feed rate, and then
  • the print head for 3D printing can be divided into two types: a feed cone and a feed cone.
  • the movement stroke of the cylinder can be used to adjust the flow rate of the discharge material flowing out of the telescopic nozzle valve, so that the print head for 3D printing has two kinds of end flow rate adjustable and end flow rate not adjustable.
  • a driving system is further included, and the driving system is configured to drive the 3D printing print head to accurately move to any point in the three-dimensional space.
  • the present invention also provides a printing method comprising the steps of additive manufacturing using a print head for 3D printing as described above.
  • the print head of the invention adopts a multi-screw extruder and a multi-channel telescopic nozzle valve, so that the self-weight of the print head is reduced and the size is reduced, and the movement flexibility of the print head is increased;
  • the print head of the present invention adapts to various existing industrial materials, such as injection molding materials, to make the application scene and application range of the large 3D printer of the present invention wider; by reducing the weight of the print head, the power mechanism for driving the print head is reduced.
  • the work load reduces the manufacturing cost; by reducing the weight of the print head, the printing acceleration is further improved, that is, the integrated printing speed is improved; [0066] 2.
  • the present invention adopts a multi-channel telescopic nozzle valve, and uses a plurality of nozzles of different sizes and sizes, a small-diameter nozzle is suitable for high-precision printing, and a large-diameter nozzle is used to increase printing speed;
  • the caliber nozzle perfectly combines the speed and accuracy of 3D printing.
  • the extruder of the present invention has a large reduction in length and a small increase in diameter, so that the size of the industrial grade 3D printer can be further reduced, and the extruder of the present invention is further reduced compared to the existing extruder. volume.
  • the diameter of the outer screw becomes larger, and the spiral angle of the outer screw can be flattened under the same extrusion amount, so that the slip of the fluid material on the screw becomes smaller. Therefore, it can generate greater propulsive force, reduce the sliding material in the downstream screw flow passage, and make the extrusion amount in the hot runner of the rear-stage screw closer to the theoretical value, and finally achieve the constant pressure of the material after multi-stage approximation theoretical value. Quantitatively stabilize the output.
  • the diameter of the primary screw is larger than that of the secondary screw
  • the diameter of the secondary screw is larger than the diameter of the tertiary screw
  • the lead of the primary screw is smaller than the lead of the secondary screw
  • the lead of the secondary screw is smaller than the lead of the tertiary screw.
  • the helix angle of the first screw is flat on the helix angle of the secondary screw
  • the helix angle of the second screw is gentler than the helix angle of the third screw. Under the action of the first two stages of the screw, the material can maintain the speed matching with the third screw. This is difficult to do with a single screw.
  • the invention adopts multiple cyclotron extrusion technology, and the material for 3D printing is heated and melted in a continuous N-shaped first-stage hot runner, second-stage hot runner, and third-stage hot runner, and the stirring effect is very high due to repeated changes in the flow direction. Obviously, the components in the material are more evenly mixed, especially some trace additives in this Under the efficient stirring mechanism, fully dispersed into the various parts of the material increases the isotropy of the final cured material.
  • the present invention provides two types of print heads, one is a 3D printing print head without a tuyer, the other is a 3D printing print head with a tuyere, the tuyere structure is adopted, and the tuyere structure is adopted.
  • the air is evenly distributed, and the air can be discharged at the same time as the discharge, and the annular air outlet is very suitable for the condition that the position of the 3D print head changes at all times, so that the air flow direction is always consistent with the material just extruded.
  • the working nozzles can achieve normal airflow, while the non-working nozzles cannot produce air, which makes it easy to print with multiple nozzles.
  • the process and equipment for air-cooling and cooling using a fan have low heat dissipation precision, high noise, high energy consumption, and it is difficult to continuously track the position and angle of the print head due to the inability to predict the angle of the extrusion material of the print head.
  • the change causes the airflow to produce uneven pressure on the material, which may easily cause deformation of the product or flow or deformation of the material just extruded, which may affect the accuracy of printing.
  • the present invention solves this problem, and the present invention has a simple structure and is less prone to failure.
  • the pneumatic control system of the invention can flexibly control the opening and closing of a plurality of nozzles and improve the speed of 3D printing; the diameter of the nozzle can be adjusted to control the precision of 3D printing; the telescopic nozzle valve of the invention
  • the heat preservation effect is good; the nozzle and the needle are in line contact to prevent the nozzle from sticking to the valve needle, thus avoiding the blockage of the nozzle and the needle, and the stability and reliability are better, thereby improving the trouble-free running time of the 3D printer.
  • the invention realizes the material used for multi-channel discharge 3D printing, and the plurality of channels can simultaneously eject the material for 3D printing, so that the 3D printing is more efficient and flexible; the mounting seat of the invention adopts the segmented setting, which is convenient.
  • the installation of expanded graphite is very reliable with expanded graphite as a sliding sealing material.
  • the telescopic nozzle valve works at high temperatures.
  • the liquid sliding sealing material is difficult to be stable at high temperatures.
  • the expanded graphite can be used for long-term sealing and lubrication. performance.
  • the invention has good stability, good reliability, convenient operation and use, novel design, strong practicability and easy application.
  • FIG. 1 is a schematic view showing the overall structure of an embodiment of the present invention.
  • Figure 2 is a partial schematic view of Figure 1;
  • FIG. 3 is a schematic view of another portion of the first embodiment of FIG. 1;
  • FIG. 4 is a schematic view of another portion of the second embodiment of FIG. 1;
  • Figure 5 is a partial schematic view of Figure 4.
  • FIG. 6 is a schematic structural view of an embodiment of the nozzle of FIG. 4;
  • Figure 7 is a control flow chart of the present invention.
  • drive system 110 screw extrusion system 120; - stage screw 1201; secondary screw 1202; third stage screw 27 2; electric heating device 130; nozzle valve control system 140; raw material feed port 150; Pressure sensor 161; flow sensor 162; control circuit 170; housing ISO; feed cone 1801;
  • mounting seat 210 tertiary hot runner 211; discharge manifold 2111; cylinder 220; upper seal 2201; lower seal 2202; cylinder cylinder 221; annular groove 2211; valve needle 230; Limiting button 232; discharging passage 240; cylinder feeding port 2401; limiting through groove 2402; first fluid chamber 251; first fluid through hole 2511; second fluid chamber 252; second fluid through hole 2521; Annular gas chamber 253; pressure gas passage 2 531; nozzle 260; prism 2602; nozzle avoidance section 261; nozzle sealing section 262; nozzle projection section 263; nozzle hole 2631; inlet passage 264; tuyere structure 280; Nozzle avoidance section 2801; tuyere seal section 2802; outlet section 2803.
  • the terms “installation”, “connected”, “connected”, “fixed” and the like should be understood broadly, and may be, for example, a fixed connection or a Removable connection, or integral connection; can be mechanical connection or electrical connection; it can be directly connected or indirectly connected through an intermediate medium, which can be the internal communication between the two components.
  • installation should be understood broadly, and may be, for example, a fixed connection or a Removable connection, or integral connection; can be mechanical connection or electrical connection; it can be directly connected or indirectly connected through an intermediate medium, which can be the internal communication between the two components.
  • the present invention provides a print head for 3D printing, comprising a casing 180, a screw extrusion system 120 and a telescopic nozzle valve, wherein the telescopic nozzle ⁇ is divided into two according to the presence or absence of the tuyere structure 280.
  • One type is a bellless retractable nozzle valve, and the other is a tuyere retractable nozzle valve.
  • One end of the casing 180 is provided with a driving system 110; the screw extrusion system 120 is disposed in the casing 180, and the screw extrusion system 120 is composed of at least two screws that are nested inside and outside, wherein At least one screw is driven by the drive system 110; the telescopic nozzle valve is disposed below the screw extrusion system 120 and below the casing 180, and the material extruded by the screw extrusion system 120 is expanded and contracted. The nozzle valve flows out.
  • the screw extrusion system 120 forms the molten material into a molten material and can be closed by a telescopic nozzle valve.
  • the telescopic nozzle can be set to be multi-channel. Therefore, if the output diameter of each channel is different, the appropriate diameter can be selected according to the need to achieve the balance between printing accuracy and speed.
  • the screw extrusion system 120 includes a first stage screw 12 01, a second stage screw 1202, and a third stage screw 272 from the outside to the inside, that is, a triple screw;
  • a cavity is provided in the screw 1201 and the secondary screw 1202 (and whether the three-stage screw 272 has a cavity structure is not limited);
  • a first-stage hot runner is formed between the casing 180 and the primary screw 1201, and the second A secondary hot runner is formed between the stage screw 1202 and the primary screw 1201, and a tertiary hot runner 211 is formed between the tertiary screw 272 and the secondary screw 1202; the tertiary hot runner 211 and the discharge
  • the first port hot runner, the second hot runner, and the third hot runner 211 are connected in series to form a continuous N-shaped channel; the primary screw 1 201, the secondary screw 1202, the third-stage screw One or more of 272 are driven to rotate by drive system 110.
  • the primary screw 1201 is driven by the driving system 110; the secondary screw 1202 and the casing 180 are In a static state.
  • the cross-sectional area of the primary hot runner and/or secondary hot runner and/or tertiary hot runner 211 gradually decreases in the direction of material flow.
  • a rotary nozzle is connected to the lower side of the three-stage screw 272, and the nozzle 260 system is in a conducting state with the third-stage hot runner 211; and a pressure sensor 161 and a flow sensor 162 are respectively disposed on both sides of the nozzle 260 system.
  • One side of the casing 180 is provided with a raw material feeding port 150, and the raw material feeding port 150 is also connected to a feeding system 151.
  • the feeding system 151 is a pneumatic feeding system 151, and the pneumatic feeding system System 151 delivers the particulate or powdered material to feed inlet 150 and sequentially through the primary hot runner, secondary hot runner, tertiary hot runner 211, nozzle 260 system. At least one micropore for discharging the gas in the material is further disposed at the intersection of the secondary hot runner and the tertiary hot runner.
  • the outer side of the casing 180 is further provided with a heating device.
  • the drive system 110 is a reduction motor; the reduction motor is detachably connected to the primary screw 1201 through a flange.
  • a feed cone 1801 is formed on the casing 180 near the feed end of the primary hot runner to increase the feed rate.
  • the theoretical extrusion amount of the material in the primary hot runner is greater than the theoretical basis amount of the material in the secondary hot runner
  • the theoretical extrusion amount of the material in the secondary hot runner is greater than the theoretical extrusion of the material in the tertiary hot runner 211.
  • the amount of the theoretical extrusion of the material in the tertiary hot runner 211 is within the threshold of the nominal extrusion amount of the material.
  • the first screw 1201 has a gentler helix angle than the secondary screw 1202 and the third-stage screw 272, so that the material does not easily slide in the primary hot runner, and the material is in the secondary hot runner and the tertiary heat flow.
  • the material in the first-stage hot runner has a blocking effect, and the material is prevented from moving in the opposite direction, which is impossible to achieve with a single screw.
  • a multiple-spinning extrusion mechanism is formed, which realizes the length of material transportation in a small space, prolongs the heating time and the stirring time, and heats and melts the materials and mixes them more thoroughly. And because the helix angle is set in three stages, it is beneficial to the stable transportation of materials.
  • the drive system 1 10 is located above the housing 180. Due to the multiple bending of the material transport, the mixing effect of the material is better.
  • one or more of the primary screw 1201, the secondary screw 1202, and the tertiary screw 272 are driven to rotate by the drive system 110.
  • a triple screw is provided, which is a preferred embodiment of the invention
  • the driving system 110 may also be provided with multiple, such as a driving system 1, a driving system 2, and a driving system 3.
  • each driving system drives a screw.
  • a drive system is provided, a drive system 2, a drive system drives a primary screw, and a drive system 2 drives a tertiary screw.
  • the secondary screw is in a fixed state.
  • the drive system separately drives the three-stage screw, and thus, the implementation of the present invention can be ensured.
  • the present invention may also be provided with a quadruple screw, a five-prong screw, a six-fold screw or a more heavy screw to further enhance the function of the present invention. It is foreseeable that by further increasing the number of screws, the length of the extruder can be further reduced, but it is also accompanied by an increase in processing difficulty. In addition, if more heavy screws are provided, the width of the extruder will increase.
  • the bellows expansion nozzle valve is described as follows:
  • the telescopic nozzle valve includes a mounting seat 210, a cylinder 220, a valve needle 230, and a nozzle 260, wherein the mounting seat 210 is detachably mounted to the screw extrusion system 120.
  • the upper portion of the mounting base 210 is provided with a three-stage hot runner 211, and the end of the third-stage hot runner 211 is provided with a discharge manifold 2111, and the lower end of the mount 210 is axially distributed with one or a plurality of inner holes, the discharge ports 2111 are respectively communicated with the upper end of each inner hole, and the lower end of the inner hole is an opening facing the outside;
  • the barrel 220 is movably mounted on the mounting seat 210 In the inner hole, the cylinder 220 protrudes from the end of the mounting base 210, the top end of the cylinder 220 is provided with at least one cylinder feeding port 2401;
  • the cylinder 220 is provided with a valve chamber;
  • a needle 230 is mounted on the mounting seat 210 through a valve cavity of the barrel 220, and a gap between the valve needle 230 and the valve chamber forms a discharge passage 240 that is electrically connected to the barrel inlet 2401.
  • the nozzle 260 is disposed at the tail of the cylinder 220, and the nozzle 260 is provided with a nozzle hole 2631 at the tail.
  • the upper and lower sections of the mounting seat 210 are respectively provided with an upper sealing member 2201 and a lower sealing member 2202 in contact with the outer peripheral edge of the upper portion of the upper portion of the cylinder 220 and the lower peripheral portion of the lower portion, and the upper sealing member 2201
  • the seal 2202 is a groove filled with expanded graphite.
  • the cylinder 220 further has a cylindrical cylinder 221 in a middle portion between the upper seal 2201 and the lower seal 2202 (the cylinder cylinder 221 is a piston when specifically manufactured); the cylinder cylinder At least one annular groove 2211 is disposed on the sidewall of the 221; the annular groove 2211 is filled with a sliding sealing material to seal the tubular body 220 with the mounting seat 210.
  • the sliding sealing material is a solid sliding sealing material such as expanded graphite.
  • first fluid chamber 251 between the cylinder cylinder 221 and the upper seal 2201, and a second fluid chamber 252 between the cylinder cylinder 221 and the lower seal 2202; the first fluid chamber 251 passes the first
  • the fluid through hole 2511 is connected to the first fluid valve; the second fluid chamber 252 is connected to the second fluid valve through the second fluid through hole 2521.
  • the head or side of the valve needle 230 is secured to the mount 210 by at least one (preferably two) locating bolts 231.
  • the upper portion of the cylinder 220 is provided with a limiting through slot 2402, and the limiting through slot 2402 and the limiting button 232 on the top side of the valve needle 230 The sliding fit is used to align the barrel feed port 2401 with the discharge port 2111.
  • the valve needle 230 is inverted L-shaped.
  • An electric heating device 130 is disposed on an outer side of the mounting seat 210 for achieving a heat insulating effect.
  • the upper stage of the mounting base 210 includes a three-stage hot runner 211; the third-stage hot runner 211 is further provided with a three-stage screw 272; the lower end of the third-stage hot runner 211 and the discharge opening 2111, the cylinder
  • the feed port 2401, the discharge passage 240, and the nozzle hole 2631 are sequentially turned on.
  • the mounting seat 210 is arranged in sections, and the segments are fixedly connected by a locking bolt.
  • the mount 210 and the casing 180 are fixed by bolts.
  • the above embodiment describes a printhead for 3D printing without a tuyer.
  • the difference between the 3D printing print head and the airless 3D printing print head is that the hollow tuyere structure 280 is disposed under the mount 210.
  • the air nozzle structure 280 is divided into a wind nozzle avoidance section 2801, a wind nozzle sealing section 2802, and an air outlet section 2803 from top to bottom.
  • the nozzle nozzle 263 is provided with a nozzle hole 2631 at the end of the printing nozzle 260.
  • the tuyeres structure 280 is circumferentially mounted on the outside of the nozzle 260;
  • the tuyere structure 280 is An air inlet passage 264 is provided for supplying air to the tuyere structure 280.
  • a ventilation space is formed between the nozzle avoidance section 261 and the tuyere avoidance section 2801.
  • one or several nozzles 260 may be disposed on the tuyere structure 280. If a plurality of printing nozzles 260 are provided, the nozzles 260 are arranged at intervals, such as in a linear or circular arrangement.
  • the nozzle 260 moves under the action of power.
  • the air inlet passage 264 supplies air to the air outlet section 2803, and the air outlet section 2803 has a cylindrical shape, and the gas is ejected from the air outlet section 2803 and printed.
  • the nozzle 260 acts on the material that has just been extruded.
  • the nozzle 260 moves downwardly, the print nozzle 260 begins to flow out of the 3D printed material, and the wind is released.
  • the nozzle 260 moves upward, the nozzle seal section 2802 and the nozzle seal section 262 slide and fit the seal.
  • the nozzle 260 immediately stops flowing out of the 3D printing material and immediately stops the wind.
  • the installation position of the air inlet passage 264 is further defined: the air inlet passage 264 is disposed at an upper side or a top portion of the tuy (2006) sealing section 2802, and when the 3 nozzles 2 60 are moved upward to the tuyere sealing section 2802 and the The nozzle seal section 262 is slidably engaged with the seal portion 264, and the air inlet passage 264 is unable to vent to the wind outlet section 2803, and when the nozzle 260 is moved downward until the tuyere seal section 2 802 is disengaged from the nozzle seal section 262, The air nozzle sealing section 2802 and the nozzle sealing section 2 62 are separated from each other to form a ventilation space, and the air inlet passage 264 is ventilated to the air outlet section 2803 through the ventilation space.
  • the lateral width of the nozzle protrusion section 263 is smaller than the opening width of the air outlet section 2803 of the tuyeres structure 280 to form an air outlet gap (outlet air space), such as a cone or a hemisphere.
  • an air outlet gap outlet air space
  • a partial slidable contact is required between the telescopic nozzle avoidance section 261 and the tuyere avoidance section 2801, and the contact portion plays a guiding role when sliding, and the non-contact portion forms an air outlet. space.
  • the inner contour of the air nozzle avoidance section 2801 is a cylindrical surface
  • the outer contour of the nozzle avoidance section 261 is an arc-shaped surface which is arranged around the axial direction, and the curved surface is a part of the cylinder
  • the radius of curvature of the curve of the curved surface in the cross-sectional direction may be less than or equal to the radius of curvature of the cylindrical surface of the tuyere avoidance section 2801, the inner contour of the tuyere avoidance section 2801
  • the cylindrical surface is tangent to the curved surface on the outer contour of the nozzle cutout 261 to form a contact surface, and the non-contact surface between the two adjacent contact surfaces, the non-contact surface and the contour of the air nozzle avoidance section 2801 A wind space is formed between them.
  • nozzles 260 may be provided.
  • the material conveyed by the feeding system 151 is a thermoplastic solid material such as one or more of metal powder, ceramic particles, glass powder, and plastic particles.
  • the barrel 220 is axially moved within the mount 210 by pneumatic or hydraulic means.
  • the invention is preferably pneumatically operated. It is of course also possible to drive with a fluid powder or fluid particles. Further, the cylinder 220 can be driven by electromagnetic force or mechanical force.
  • annular plenum 253 is disposed on the inner side wall of the inner hole, the annular plenum 253 surrounds the circumference of the cylinder 220, the annular plenum 253 and a pressure
  • the gas passages 2531 are connected, and the pressure gas passages 2531 are electrically connected to the outside.
  • the present invention further provides a control system including a control circuit 170; a temperature control system, the temperature control system is electrically connected to the control circuit 170; a pressure sensor 161, the pressure sensor 161 and a control circuit 170 electrically connected; a flow sensor 162, the flow sensor 162 is electrically connected to the control circuit 170; the drive system 110, the drive system 110 is electrically connected to the control circuit 170, wherein the temperature control system controls the melting of the material through feedback adjustment
  • the pressure sensor 161 and the flow sensor 162 monitor the pressure and flow parameters of the molten material at the outlet of the tertiary hot runner 211 and return it to the control circuit 170 to control the electricity.
  • the path 170 adjusts the power output parameter of the drive system 110 according to the pressure and flow parameter feedback, so that the actual flow rate of the molten material flowing out of the nozzle 260 is within a preset flow threshold range; and further includes a nozzle valve control system 140.
  • the nozzle valve control system 140 includes a gas source that is vented to the second fluid chamber 252 and the first fluid chamber 251 under the control of the control circuit 170.
  • a pressure measuring device for measuring gas pressure of the second fluid chamber 252, the first fluid chamber 251; the pressure measuring device is connected to the control circuit 170, and the control circuit 170 is based on pressure
  • the parameter feedback returned by the measuring device controls the pressure values of the second fluid chamber 252 and the first fluid chamber 251, thereby achieving the jacking or retracting state of the cylinder 220 and the nozzle 260.
  • the signal triggering module further sends a trigger signal to the control circuit 170 under the trigger of the 3D printing program.
  • the control circuit 170 sends a control signal to the air source according to the trigger signal to specifically control the opening of the second snorkel. Or close.
  • the air sealing function is realized at the same time in this embodiment, and the material is prevented from flowing out from the gap between the cylinder 220 and the inner hole, and the movement state of the cylinder 220 is also controlled.
  • the above two functions are realized, and the specific scheme is as follows: At any time, in order to achieve air sealing, one of the first fluid chamber 251 and the second fluid chamber 252 needs to be supplied with pressurized gas, and the pressure is higher than the discharge passage 2 The pressure of the molten material in 40; and in order to achieve the driving effect, the pressure difference between the two fluid chambers can be controlled.
  • a gas is introduced into the first fluid chamber 251, and a liquid or gas or fluid particles or a fluid powder is introduced into the second fluid chamber 252, and the first fluid chamber 251 is inside.
  • the pressure of the molten material is always higher than the pressure of the molten material in the discharge passage 240. Since the first fluid chamber 251 is closer to the barrel inlet and the limiting passage 2402, the liquid in the second fluid chamber 252 is not easy (such as liquid metal). It is not easy to enter the discharge channel 240.
  • a ridge 2602 is also provided at the intersection between the nozzle sealing section and the nozzle boss section for easy installation and disassembly using a standard wrench.
  • the present invention also provides a 3D printer including a rack, the rack being provided with at least one of the above 3
  • D Print head Also included is a drive system 110 for driving the 3D printing printhead for accurate movement to any point in the three dimensional space.
  • the present invention also provides a printing method comprising the steps of additive manufacturing using a print head for 3D printing as described above.
  • the invention can also be provided with a tuyere structure 280, which can uniformly wind out cold air (or normal temperature wind) around the material just printed, avoid cooling other materials that have been cooled to an appropriate level, and can enhance the wind force, The air is blown out evenly, and the material is evenly stressed, so that the material is not blown away from the predetermined position.
  • a tuyere structure 280 which can uniformly wind out cold air (or normal temperature wind) around the material just printed, avoid cooling other materials that have been cooled to an appropriate level, and can enhance the wind force, The air is blown out evenly, and the material is evenly stressed, so that the material is not blown away from the predetermined position.
  • the tuyere structure 280 can also be used to blow hot air, and the blown annular hot air also preheats the upper layer of the cooled material at the next point to be reached by the print head, a small part of the annular hot air. Although the heat is transferred to the just-sprayed printing material, it is only a small part. Moreover, the final temperature of the material can be maintained by reducing the temperature of the printing material flowing out of the nozzle hole 2631 and the heat compensation of the annular hot air. Within the preset range, the blowing of the hot air has no side effects and unexpected effects.
  • the adjustment of the flow rate of the printing head can adjust the output intensity of the extruder indirectly by adjusting the speed reducing motor, select the nozzle 260 of different calibers, control the distance between the inner wall of the cylinder 220 and the lower end of the valve needle 230, and can also adjust the pneumatic feeding system.
  • the feed rate is further adjusted, and the output flow of the print head can be flexibly adjusted by different levels of adjustment.
  • the material also generates gas in the hot runner of the extruder, and the gas can be discharged from the micropores at the intersection of the secondary hot runner and the tertiary hot runner, and the traced material discharged is taken back by the primary screw 1201. Machine, to avoid material loss.
  • the height of the nozzle 260 in the working state is lower than that of the other non-operating nozzles 260, preventing other inoperative nozzles 260 from interfering with the printed product.
  • the pneumatic feeding system of the invention also has the function of drying and preheating the material, so that the pneumatic feeding system is provided with a drying device or a preheating device, so as to prevent the wet material from being blown into the extrusion by the wind. Inside the machine.
  • nozzle hole 2631 Ejected from the nozzle hole 2631; when the second fluid chamber 252 and the first fluid chamber 251 on the cylinder 220 are both filled with gas, and the air pressure of the second fluid chamber 252 is higher than the pressure of the first fluid chamber 251, The cylinder 220 is retracted under the thrust of the second fluid chamber 252, the discharge passage 240 is closed, and the material cannot flow out (spray) from the nozzle hole 2631.
  • four nozzles 260 are used in the present invention, and the diameter of each nozzle 260 can be set as needed (generally, the series of diameters of the four nozzles 260 are changed, such as changes in the difference, the ratio changes), when a nozzle of a certain diameter is required.
  • 260 output material ⁇ can control the air source to control the running state of a certain cylinder 220, thereby controlling the opening and closing of a certain cylinder 220.
  • the present invention also supports multiple channels and emits materials for higher realization. The function.
  • the difference from the tuyere is that: after the hot material is ejected through the nozzle hole 26 31 or ejected, the outer circumference of the nozzle 260 ejects the annular airflow. It is used for rapid cooling of the hot material just extruded, the airflow area is slightly larger than the annular area of the nozzle 260, and the contact area of the airflow with the printing material is much smaller than the contact area for directly dissipating heat by the fan or the fan; The outer circumference of the nozzle 2 60 ejects a hot gas stream for heating to improve the adhesion of the hot material to be extruded to the printed portion.
  • the tuyere structure 280 is also internally provided with a multi-wide structure for shunting the gas.
  • the tuyere structure 280 is detachably mounted at the bottom of the mount 210.
  • the tuyere 3D print head is different from the tuyered 3D print head in the tuyere structure 280, and whether or not the tuyere structure 280 can be added according to specific needs, if the 3D print print head with the tuyère is used, It needs to be air cooled with a fan or fan.
  • the telescopic nozzle valve is used, the nozzle 260 can be switched in a circular shape, and the fine outer contour ⁇ is printed, and the small-diameter nozzle 260 is switched.
  • the use is much larger than the small diameter.
  • the large diameter nozzle 260 of the nozzle 260 increases the printing speed by several times.
  • the printing material cuts the material from the end of the nozzle hole 2631 by the mechanical force between the valve needle 230 and the nozzle 260, and maintains the internal pressure so as not to change due to material leakage, passing through the blank area. After reprinting, there is no need to rebuild the pressure to make the print more stable.
  • the present invention is controlled by fluid force transfer.
  • the fluid may be a gas, a liquid, a liquid metal, a flowable powder, a flowable particle, etc., and the fluid valve remotely controls the opening and closing of the plurality of nozzles 260 away from the printed high temperature zone.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)

Abstract

L'invention concerne une tête d'impression pour impression 3D comprenant un boîtier (180), un système d'extrusion à vis (120), des bases de montage (210), des cylindres (220), des pointeaux de soupape (230) et des buses (260). Un système d'entraînement (110) est disposé sur une extrémité du boîtier (180). Le système d'extrusion à vis (120) est disposé dans le boîtier (180) et est constitué d'au moins deux vis qui sont emboîtées entre elles à l'intérieur et à l'extérieur, et au moins une vis est entraînée par le système d'entraînement (110). Les bases de montage (210) sont montées au-dessous du système d'extrusion à vis (120). Un ou plusieurs trous internes sont répartis axialement dans les bases de montage (210), et une ouverture de dérivation d'évacuation (2111) est formée dans la surface supérieure ou latérale de chaque trou interne. Les cylindres (220) sont montés de manière correspondante dans les trous internes des bases de montage (210), chaque cylindre (220) s'étend depuis extrémité de la base de montage correspondante (210), et une ouverture d'alimentation de cylindre (2401) est formée dans l'extrémité supérieure du cylindre (220). Des cavités de soupape sont formées dans les cylindres (220). Les pointeaux de soupape (230) pénètrent les cavités de soupape des cylindres (220) et sont montés sur les bases de montage (210), et des espaces entre les pointeaux de soupape (230) et les cavités de soupape forment des canaux d'évacuation (240) communiquant avec les ouvertures d'alimentation de cylindre (2401). Les buses (260) sont disposées sur les extrémités arrière des cylindres correspondants (220). La tête d'impression est légère, de petite taille, équilibrée entre une grande précision d'impression et une vitesse d'impression élevée, de conception nouvelle, de praticabilité élevée et présente une importante valeur économique.
PCT/CN2016/084393 2016-06-01 2016-06-01 Tête d'impression pour impression 3d, système de commande, imprimante 3d et procédé d'impression Ceased WO2017206128A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/084393 WO2017206128A1 (fr) 2016-06-01 2016-06-01 Tête d'impression pour impression 3d, système de commande, imprimante 3d et procédé d'impression

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/084393 WO2017206128A1 (fr) 2016-06-01 2016-06-01 Tête d'impression pour impression 3d, système de commande, imprimante 3d et procédé d'impression

Publications (1)

Publication Number Publication Date
WO2017206128A1 true WO2017206128A1 (fr) 2017-12-07

Family

ID=60478430

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/084393 Ceased WO2017206128A1 (fr) 2016-06-01 2016-06-01 Tête d'impression pour impression 3d, système de commande, imprimante 3d et procédé d'impression

Country Status (1)

Country Link
WO (1) WO2017206128A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108215157A (zh) * 2018-02-27 2018-06-29 浙江大学 一种高分子液态金属共打印的柔性电路三维打印装置
CN110614767A (zh) * 2019-08-16 2019-12-27 华南理工大学 一种固液材料结合式双喷头3d打印机及其打印方法
CN112848295A (zh) * 2020-12-17 2021-05-28 李元军 一种防止打印机机头拉丝的打印机结构
WO2021204680A1 (fr) * 2020-04-08 2021-10-14 HoGroTec GmbH Dispositif d'impression, de préférence une imprimante 3d
EP3737550A4 (fr) * 2018-01-09 2021-10-27 Triastek, Inc. Dispositif d'impression 3d pharmaceutique de précision
CN115923131A (zh) * 2022-12-15 2023-04-07 广东博工叁陆伍机器人科技有限公司 3d生物打印系统
US12103231B2 (en) 2020-07-10 2024-10-01 Triastek, Inc. High-precision additive manufacturing device and high-throughput additive manufacturing system
US12168538B2 (en) 2020-02-17 2024-12-17 Triastek Inc. Continuous unloading and packaging system of pharmaceutical additive manufacturing
US12384112B2 (en) 2019-08-20 2025-08-12 Triastek, Inc. High-throughput and high-precision pharmaceutical additive manufacturing system
US12605881B2 (en) 2017-05-16 2026-04-21 Triastek, Inc. 3D printing device and method

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101767435A (zh) * 2010-03-22 2010-07-07 北京化工大学 复合共挤锥形螺杆挤出机
KR20140010568A (ko) * 2012-07-13 2014-01-27 한국프린티드일렉트로닉스연구조합 고점도 재료 분사를 위한 직접 인쇄방식의 프린트 헤드
CN103692653A (zh) * 2013-12-24 2014-04-02 北京化工大学 熔体微分三维打印机
CN104149352A (zh) * 2014-08-27 2014-11-19 三亚思海创新机电工程设计有限公司 3d打印机用打印头
CN104729439A (zh) * 2013-12-20 2015-06-24 赫克斯冈技术中心 具有高精度3d打印功能的坐标测量机
CN104760282A (zh) * 2015-03-05 2015-07-08 威海湛翌三维科技有限公司 一种三维打印机
US20150321419A1 (en) * 2014-05-06 2015-11-12 Todd Linthicum Extrusion system for additive manufacturing and 3-d printing
CN106079434A (zh) * 2016-06-01 2016-11-09 深圳万为智能制造科技有限公司 3d打印用打印头、控制系统、3d打印机及打印方法
CN205800202U (zh) * 2016-06-01 2016-12-14 深圳万为智能制造科技有限公司 3d打印用打印头、控制系统及3d打印机

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101767435A (zh) * 2010-03-22 2010-07-07 北京化工大学 复合共挤锥形螺杆挤出机
KR20140010568A (ko) * 2012-07-13 2014-01-27 한국프린티드일렉트로닉스연구조합 고점도 재료 분사를 위한 직접 인쇄방식의 프린트 헤드
CN104729439A (zh) * 2013-12-20 2015-06-24 赫克斯冈技术中心 具有高精度3d打印功能的坐标测量机
CN103692653A (zh) * 2013-12-24 2014-04-02 北京化工大学 熔体微分三维打印机
US20150321419A1 (en) * 2014-05-06 2015-11-12 Todd Linthicum Extrusion system for additive manufacturing and 3-d printing
CN104149352A (zh) * 2014-08-27 2014-11-19 三亚思海创新机电工程设计有限公司 3d打印机用打印头
CN104760282A (zh) * 2015-03-05 2015-07-08 威海湛翌三维科技有限公司 一种三维打印机
CN106079434A (zh) * 2016-06-01 2016-11-09 深圳万为智能制造科技有限公司 3d打印用打印头、控制系统、3d打印机及打印方法
CN205800202U (zh) * 2016-06-01 2016-12-14 深圳万为智能制造科技有限公司 3d打印用打印头、控制系统及3d打印机

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12605881B2 (en) 2017-05-16 2026-04-21 Triastek, Inc. 3D printing device and method
US12156945B2 (en) 2018-01-09 2024-12-03 Triastek, Inc. Precision pharmaceutical 3D printing device
EP3737550A4 (fr) * 2018-01-09 2021-10-27 Triastek, Inc. Dispositif d'impression 3d pharmaceutique de précision
CN108215157A (zh) * 2018-02-27 2018-06-29 浙江大学 一种高分子液态金属共打印的柔性电路三维打印装置
CN110614767A (zh) * 2019-08-16 2019-12-27 华南理工大学 一种固液材料结合式双喷头3d打印机及其打印方法
CN110614767B (zh) * 2019-08-16 2024-02-20 华南理工大学 一种固液材料结合式双喷头3d打印机及其打印方法
US12384112B2 (en) 2019-08-20 2025-08-12 Triastek, Inc. High-throughput and high-precision pharmaceutical additive manufacturing system
US12168538B2 (en) 2020-02-17 2024-12-17 Triastek Inc. Continuous unloading and packaging system of pharmaceutical additive manufacturing
US12595084B2 (en) 2020-02-17 2026-04-07 Triastek Inc. Continuous unloading and packaging system of pharmaceutical additive manufacturing
WO2021204680A1 (fr) * 2020-04-08 2021-10-14 HoGroTec GmbH Dispositif d'impression, de préférence une imprimante 3d
US12103231B2 (en) 2020-07-10 2024-10-01 Triastek, Inc. High-precision additive manufacturing device and high-throughput additive manufacturing system
CN112848295A (zh) * 2020-12-17 2021-05-28 李元军 一种防止打印机机头拉丝的打印机结构
CN115923131A (zh) * 2022-12-15 2023-04-07 广东博工叁陆伍机器人科技有限公司 3d生物打印系统

Similar Documents

Publication Publication Date Title
WO2017206128A1 (fr) Tête d'impression pour impression 3d, système de commande, imprimante 3d et procédé d'impression
CN106079434A (zh) 3d打印用打印头、控制系统、3d打印机及打印方法
CN205800202U (zh) 3d打印用打印头、控制系统及3d打印机
CN110614767B (zh) 一种固液材料结合式双喷头3d打印机及其打印方法
CN103222528B (zh) 3d打印设备及其送料系统
CN110509542A (zh) 一种多色复合3d打印结构及打印方法
CN105922590B (zh) 3d打印用风嘴及具有风嘴的多通道伸缩喷嘴阀
CN203381086U (zh) 应用于fdm高速3d打印机的冷却装置及3d打印机
CN205202208U (zh) 一种三维打印装置
CN105965895B (zh) 3d打印用多重回旋挤出机及控制系统
CN107214958B (zh) 一种双口径3d打印机喷头
CN205674492U (zh) 新型3d打印用风嘴及具有风嘴的多通道伸缩喷嘴阀
CN107263854B (zh) 用于陶瓷堆积成型的变流量式立体成型方法
CN107160689B (zh) 金属粉末增材堆积的变流量式立体成型打印机
CN209208082U (zh) 一种气压式3d打印装置
CN205781082U (zh) 新型3d打印用多通道伸缩喷嘴阀及喷嘴阀控制系统
CN216708284U (zh) 一种尼龙母粒成型设备
WO2017206129A1 (fr) Buse d'air pour impression 3d, et obturateur de buse télescopique à canaux multiples pourvu d'une buse d'air
CN213618275U (zh) 一种pe管材挤压成型机
WO2017206127A1 (fr) Soupape de buse télescopique multicanal pour impression 3d, et système de commande de soupape de buse
CN114801165A (zh) 一种颗粒挤出式3d打印设备
CN105889571B (zh) 3d打印用多通道伸缩喷嘴阀及喷嘴阀控制系统
CN100558539C (zh) 风动力牵引三维吹塑设备及其实现方法
CN217714052U (zh) 一种波纹管浆料挤出头
CN212097543U (zh) 一种3d打印设备

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16903513

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(19 EPC

122 Ep: pct application non-entry in european phase

Ref document number: 16903513

Country of ref document: EP

Kind code of ref document: A1