CN105034393A - High-speed FDM 3D printer and printing method - Google Patents
High-speed FDM 3D printer and printing method Download PDFInfo
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- CN105034393A CN105034393A CN201510231802.8A CN201510231802A CN105034393A CN 105034393 A CN105034393 A CN 105034393A CN 201510231802 A CN201510231802 A CN 201510231802A CN 105034393 A CN105034393 A CN 105034393A
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Abstract
The invention discloses a high-speed FDM 3D printer and a printing method and belongs to the technical field of 3D printers. The 3D printer includes a shell body. A transversal rod which can be moved vertically in the vertical direction of the shell body is disposed in the shell body. A work platform which is clockwisely or counter-clockwisely rotatable is disposed on the bottom in the shell body. An extrusion head apparatus which can be moved left-and-right along the transversal rod is arranged on the transversal rod. The 3D printing is achieved by a new algorithm program in which conventional absolute value coordinates are replaced by polar coordinates. The extrusion head includes a material cylinder in which a screw rod is disposed. Inclined teeth are arranged at a material inlet of the screw rod, wherein the inclined teeth are used as moving knives which are matched with fixed knifes at the material inlet of the material cylinder for cutting bars into granules which are convenient to melt and extrude by the screw rod. In addition, low-temperature gas is employed for rapidly cooling and moulding a die. By means of the technical scheme, a problem that it is liable to cause material granule blocking at a 3D printing extrusion head in the prior art can be solved. By means of one device, processing of various fluid materials, such as plastic, rubber, resin, ceramic clay and the like, is achieved, so that the finishing speed of FDM 3D printing is increased multiply.
Description
Technical field
The present invention relates to 3D printer technology field, especially relate to a kind of high speed FDM3D printer.
The invention still further relates to a kind of Method of printing, especially relate to a kind of 3D Method of printing realized in conjunction with rotary motion and rectilinear motion.
Background technology
It is not fresh technology that 3D prints, and this thought originates from the U.S. in 19 end of the centurys, and is developed in the eighties in 20th century and promote.Alliance of Internet of Things school-run enterprise of China is called it " thought of upper eighties of last century, the technology of eighties of last century, the market in this century ".3 D-printing normally adopts digital technology file printing machine to realize.The output of this printer and sales volume have just obtained great growth since 21st century.
It is a kind of rapid shaping technique be widely used at present that 3D prints, its moulding process principle is: the electronic 3-D model first setting up target part, then with software, threedimensional model is carried out hierarchy slicing process, obtain the data message of each processing aspect, under the control of the computer, carry out lamination according to slicing layer surface information and increase material manufacture, complete the manufacture of target processing.The advantage that 3D prints is not by the restriction of part shape complexity, without any need for moulds of industrial equipment, speed is fast, and efficiency is high, can realize the automated manufacturing of free shape entity, is being subject to paying attention to more and more widely.
A kind of machine of 3D printer and rapid shaping technique, particularly desktop level 3D printer are cheap easy-to-use due to it, obtain the universal of certain degree.But the problem that user in use often runs into is also a lot, such as analogue formation is consuming time long especially, success rate is lower, there is suitable DIY machine immature, wire rod wire diameter is unstable, qualification of operating personnel etc. reason, a lot of user uses 3D print procedure not obtain very happy experience, this also greatly limit the common and popularization that 3D prints, the existing customer struck a bargain on the one hand does not have positive in this cause of promotion, and producer also enters 3D and prints industry and understand making great efforts to develop very much some strange users on the other hand.
Do not know that taking 3D to print does for what relative to a lot of user, 3D printing technique Problems existing is badly in need of solving, people is wherein allowed most to be difficult to the shaping efficiency of " too slow " accepted, the model that 300 grammes per square metres made a call to by FDM class 3D printer needs consuming timely to reach 30 hours, and excessively slow speed becomes comment of experts and whether meets concept for the high speed, high efficiency described in industry 4.0
" industry 4.0 " project is mainly divided into two principal themes, and one is " intelligent plant ", primary study intellectualized production system and process, and the realization of the distributed production facility of networking; Two is " intelligence is produced ", relates generally to the production logistics management of whole enterprise, human-computer interaction and the application etc. of 3D technology in industrial processes
Existing 3D printer, comprises FDM, SLS, SLA, DLP etc., all there is 3D printing effect low, the feature that shaping speed is slow.FDM class 3D printer is print material with plastic wire, pass through gear extrusion, because plastics can reach softening point and melting point by under warm condition, better extrude to make it and be subject to down down to plastify flowing, the whole passage of FDM extruder has good cooling duct, avoid because nozzle high temperature heat transfer causes plastic wire softening in advance and extrude motionless, namely plastic wire had better not soften before melting.And heat block only heats in the sub-fraction of nozzle, plastic wire heated time is short, is heated insufficient, and extrusion speed can only promote in limited range.Namely FDM class 3D printing extruder structure is limited, and passage needs good cooling, and nozzle heating part is very little, melt extrudes efficiency and is difficult to promote.
The plastic wire fusing of FDM class 3D printer is extruded and is broken into model, and cooling and shaping needs certain hour.Conventional plastic adds man-hour, and plastic products melt extrude the good type of cooling of rear general needs to make the quick cooling and shaping of product.And FDM3D is generally air-cooled based on normal temperature fan, the lines that fan has just been extruded facing to the nozzle quenching heated by some 3D printers, fusing extrusion efficiency is made to reduce further, lines are extruded from colder nozzle, be deposited on model through fan blast-cold is stacked more again, but because fan is that and then extruder is moving, the air-cooled effect just very of short duration to lines of fan, and lines are cumulative on model, the thermal history of lines is piled more and more on model, and cooling does not act on model, whole model cooling is bad, can continue to occur water wave, local is sagging, outlet cabling has the problems such as deviation.
Nerve-wracking problem is exactly " stifled nozzle " in addition.Stifled nozzle uses in 3 printer analogue formation processes exactly, for various reasons, wire rod is stuck in the not blanking of nozzle trunnion, machine is also in running, but model is got to certain degree and is just in progress never again, and this is consuming time several hours at least for one, several days at most, the model of even 1 month, can print very annoyed and disappointed to 3D to user.Although some producer can add " controlling cashier power-cut-off contiuous printing ", the function of " plug is shut down, and continues and beats ", also just makes up afterwards, cures the symptoms, not the disease.
In 3D printing consumables wire production process, a lot of producer can not fundamentally wire diameter processed 100% up to standard, particularly diameter is the wire rod of 1.75mm, wire diameter is little, load is few, extrusion efficiency is low, more can not as extruding the die device (otherwise efficiency can be lower) increasing vacuum cooled sizing special section, and cost is high.And the also bad recovery of the plastic cement leftover pieces of 3D printing consumables, when directly interpolation leftover pieces and virgin material mixing are extruded from extruder, the bump on lines surface exceedes machine and allows that the probability of the upper deviation is high, almost just has several bump every 1 meter.Because domestic vicious price competition and agent demand a lower price, the 3D printing consumables price straight line of original high price is caused to decline, under low-down profit, the unable investment new equipment of factory does quality product, and the wire rod that the user that 3D prints uses stifled nozzle is again and again grieved and do not talked endlessly.
What the 3D printer of main flow used is all that motor gear clamping wire rod enters nozzle extrusion molding by trunnion melting, the diameter of trunnion passage is generally 1.9-2.0mm, because wire rod has certain flattening at extruder motor and gear place, can become large at the axial diameter of flattening place, if wire diameter when entering trunnion once be greater than the tolerable upper deviation will be herein stuck. trunnion made by the 3D printer Teflon material had, and relatively can to hold scope a little large, if with iron pipe or stainless steel tube, very strict.Get stuck once slightly of short duration, motor gear place can be rotated further, and stings and wire rod grinds flat levigate by place, until " biting broken ".
Chinese Patent Application No. is the application for a patent for invention of 201410252767.3, disclose so a kind of technology: comprise housing, extrusion mechanism, elevating mechanism, workbench and slide rail, described workbench is installed on the bottom in housing by slide rail, described extrusion mechanism is installed in housing by elevating mechanism, and described extrusion mechanism is positioned at above workbench; Described extrusion mechanism comprises machine barrel, motor, loading hopper and at least one screw rod, and described machine barrel comprises delivery section, transition part and extrudes portion, and described delivery section, transition part are connected from material moving direction successively with the portion of extruding; Described delivery section and motor are all installed on elevating mechanism, and described screw rod is installed on the inner chamber of delivery section, and one end of described screw rod is connected with the rotating shaft of motor, and described loading hopper is installed in delivery section.The singe screw that this technology is also as the conveying significant components in 3D printer, but and this screw configuration undeclared, be copy word by word common plastics processing screw extruder structure to move on 3D printer substantially, have following defect:
(1) what the feeding place of this structure was is the semicontinuous feeding manner of hopper, and the material of use is generally graininess but not linear;
(2) the undeclared size of this 3D printer, if the machine of desktop level, higher to motor torque demands, machinery equipment will be huger, not necessarily be applicable to the small form factor requirements of desktop level, if large-scale machine, it is do house that its motion class on XYZ direction is similar to;
(3) this extruder is designed with at the bent angle near workbench and is not inconsistent with convention, and from less outlet nozzle, out resistance can be very large again in the space not having Screw Extrusion to promote for common plastics extruder;
(4) this extruder is only by monolateral fixed form, and rocking when it moves can be larger, and 3D prints and do not meet extruding the requirement that walks of filament high precision, is difficult to realize 3D printer model and accurately exports.
Summary of the invention
In order to overcome the deficiencies in the prior art, the present invention proposes a kind of screw rod extruder head, its objective is and solves the problem that existing 3D printer extruder head easily sends out nodules blocking, and improve FDM3D printout speed.
In order to solve above-mentioned technical problem, the basic technical scheme that the present invention proposes is: a kind of high speed FDM3D printer, comprise housing, one cross bar that can move up and down along housing vertical direction is set in housing, housing inner bottom part arrange one can 360 ° rotate workbenches, described cross bar arranges one can along the extruder head of the left and right movement of this cross bar;
Described extruder head comprises barrel, arranges a screw rod in barrel, and the upper periphery side of described screw rod arranges helical teeth, and when this helical teeth rotates, the curved surface at place is just to charging aperture.
Further, the axis of described helical teeth and screw rod is arranged at angle, and this angular range is 1 ° to 90 °.
Further, described helical teeth is evolvent type helical teeth, and the modulus Zm of described helical teeth is 0.1 ~ 20, and reference diameter is 5 ~ 20mm.
Further, described charging aperture place is provided with a quiet cutter, and this quiet cutter and helical teeth are just to also coordinating the pelletizing realized line material.
Further, described charging aperture place is socketed with the first heating jacket, and the heating temperature range of this first heating jacket is 50 to 200 DEG C.Heating jacket is softening for being preheated to wire rod herein, to reduce the resistance that driven by motor screw rod cuts off wire rod.
Further, the arranged outside of described barrel has the second heating jacket and the 3rd heating jacket.
Further, the top of described screw rod connects the first motor for controlling the rotation of screw rod.
Further, the top of described screw rod connects the first travelling gear, and this first transmitting gear engages the second travelling gear that a tip diameter is less than the first travelling gear.Certain transmission can be realized to reduce the heating of motor when slow transport, motor can be realized to overcome the resistance cutting off wire rod in small electric power situation by the gearratio of gear.
The present invention also proposes a kind of Method of printing of 3D printer: comprise bench top module and the print module be arranged on cross bar for printer model, when carrying out 3D and printing, bench top module first rotates an angle, the region that needs are printed is positioned at the side of cross bar, and then print module moves back and forth in the side of cross bar and realizes 3D printing.First print needing the absolute value ordinate transform polar coordinates system of the model printed to carry out output when implementing to print.
The invention has the beneficial effects as follows:
A kind of high speed FDM3D printer of the present invention, comprise housing, it is characterized in that: a cross bar that can move up and down along housing vertical direction is set in housing, at housing inner bottom part, one rotary workbench is set, described cross bar arranges one can along the extruder head of the left and right movement of this cross bar, and this extruder head comprises barrel, arranges a screw rod in barrel, the upper periphery side of described screw rod arranges helical teeth, and this helical teeth is just to charging aperture.Extruder head of the present invention mainly arranges helical teeth on the top of screw rod, realizes the pelletizing to plastic cord, can solve the problem of putty in 3D print procedure at all by helical teeth.In addition, various look female colorant can be added at charging aperture place and realize the output of broken colour 3D printer model, this device not only can be used for plastic wire charging, and the feeding that also can be used for plastic grain and thickness state material enters, and greatly widens desktop level 3D printer alternate material category.By technical scheme of the present invention, can FDM3D printout speed significantly improve.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment one of a kind of screw rod extruder head of the present invention;
Fig. 2 is the structural representation of the embodiment two of a kind of screw rod extruder head of the present invention;
Fig. 3 is the structural representation of the 3D printer based on screw rod extruder head.
Detailed description of the invention
Below with reference to accompanying drawing 1 to accompanying drawing 3, the present invention is described further, but should not limit the scope of the invention with this.
For convenience of description with understanding technology point of the present invention, the orientation that the term position involved by following description all presents with accompanying drawing is as the criterion.
Contrast accompanying drawing 1:
Embodiment one
A kind of screw rod extruder head, comprise barrel 1, arrange screw rod 2 in barrel, the upper periphery side of this screw rod 2 arranges helical teeth 21, and this helical teeth 21 is just to charging aperture 11.Herein, as long as helical teeth 21 has part just to described charging aperture 11, helical teeth 21 all align charging aperture 11 is not required.Wherein the length of barrel 1 is between 50-200mm, and the length of nozzle 12 is between 10-100mm, and the diameter of the maximum of nozzle 12 is between 11-50mm.
Concrete, described helical teeth 21 is arranged along the axis of screw rod 2.This helical teeth 21 is evolvent type helical teeth, and the number of teeth of helical teeth 21 is 20, and modulus Zm is 1, then the reference diameter of this helical teeth 21 is 20mm.
Wherein, the profile of tooth of helical teeth 21 also can make triangle, or other forms of profile of tooth.
Taper is arranged in the bottom of screw rod 2, makes the material grain melted flow out along the tip of screw rod 1 like this, improves 3D print quality.Screw rod in the present invention is singe screw, and the length of whole piece screw rod 2 will between 50mm to 100mm.
Arrange the first motor 3 on the top of screw rod 2, this first motor 3 rotates for driving described screw rod 2.When expect grain enter into this screw rod 2 time, will move down along the screw thread pressure of screw rod 2, finally enter and flow out from nozzle opening.This first motor 3 is servomotor, and it connects extraneous control circuit, realizes controlling the rotating speed of this screw rod 2.
In the present embodiment, at bottom snap one nozzle 12 of barrel 1, this nozzle 12 is tapered.Concrete, in charging aperture 11, arrange a quiet cutter 13, this quiet cutter 13 is just right with helical teeth 21, by quiet cutter 13 and helical teeth 21 just to better realizing pelletizing.
Concrete, the helical teeth 21 of screw rod 2 faces charging aperture 11, plastic cord will enter in barrel 1 from this charging aperture 11, time plastic cord has just entered into charging aperture 11, rotation due to screw rod 2 drives the rotation of helical teeth 21, under the effect of helical teeth 21, plastic cord will be cut into fine grained, these fine grain length will between 0.5mm and 2.0mm.Conveniently to the pelletizing of plastic cord, arrange the first heating jacket 4 at charging aperture 11 place, this first heating jacket 4 is socketed on charging aperture 11, and its heating-up temperature is between 50 to 100 DEG C; Common, if 3D printing consumables is PLA or ABS, the heating-up temperature of this first heating jacket 4 is on softening point.By this first heating jacket 4, moment and the heat-dissipating of motor can be reduced.
Concrete, in the circumference of barrel 1, the second heating jacket 5 and the 3rd heating jacket 6 are set; This second heating jacket 5 and the 3rd heating jacket 6 are tightly socketed on barrel 1, realize the heating of material grain and make it thawing in the delivered heat produced by this second heating jacket 5 and the 3rd heating jacket 6 to barrel 1, the internal friction that screw rod turns process materials and barrel also can generate huge heat, and the hot melt of whole screw rod nozzle is at least 3-5 times of common 3D printer.
Embodiment two
Contrast accompanying drawing 2:
The difference of the present embodiment and embodiment is: the top of screw rod 7 arranges the first travelling gear 8, and this first travelling gear 8 engages the second travelling gear 9, and this second travelling gear 9 connects a servomotor.Concrete, the gear diameter of the first travelling gear 8 is greater than the diameter of the second travelling gear 9.So both can reduce moment and the heat-dissipating of servomotor, can make again servomotor relative motion faster time, the velocity of rotation of the screw rod 7 that slows down, when printing to coordinate 3D, nozzle extrudes the plastics of trace to ensure the smooth surface of product as far as possible.
A kind of 3D printer based on screw rod extruder head of the present invention, comprise housing 01, one cross bar 02 that can move up and down along housing vertical direction is set in housing 01, at housing 01 inner bottom part, one rotary workbench 03 is set, described cross bar 02 arranges one can along the extruder head 04 of the left and right movement of this cross bar 02, and this extruder head 04 is described screw rod extruder head.
High-quality 3D can be realized by this technology to print.The extruder head of 3D printer is arranged on cross bar, instead of traditional be installed on cross movement frame, cross bar can move up and down, in general extruder head only needs the lateral movement at jackshaft, workbench is wherein circular or other shapes, and this workbench can operate clockwise or counterclockwise.Any one threedimensional model when printing, is in workbench center, and print generative process, workbench can clockwise or rotate counterclockwise, and extruder head moving area only needs the right side back and forth movement at central shaft.
Such as: with the central point of extruder head for zero point, from (X, Y, Z) absolute coordinate of Slice Software, convert to obtain model polar value (the distance d at model points and zero point, angle),
Citing:
The outer of model turns surface portion:
When angle value a is greater than 90, then base plate rotates clockwise 90 values, and extruder moves (d, Z)
When angle value a is greater than 180 degree, then base plate rotates clockwise 180 degree, and extruder moves (d, z)
When angle value a is greater than 270 degree, base plate rotates clockwise 270 degree, and extruder moves (d, Z)
The inside filling part of model will be irregular polygon, mobile then be (d-r, z), r can manually be arranged, and this value is set to 0.1-0.4mm, ensures that periphery always has and filling part adhesion, the n value of a filling part is set again, represents the number of plies of filling part.
This technology has following advantage compared with traditional 3D printer:
1. pair same model, distance of walking about obviously reduces, and extruder head only needs in half lateral movement;
2. workbench has clockwise or counterclockwise movement, most effective for beating cylindrical object;
3. in general common 3D printer is that belt transmission by electric machine rotation axle sleeve, often turn around and can only rotate the girth distance of axle, and workbench only needs to rotate half cycle, extruder head can be made to move to 2 points of object tangent plane lie farthest away, motor rotation speed defines with revolution, in same revolution situation, the distance that workbench is walked, much larger than the move distance summation of common 3D printer XY axle, greatly reduces run duration
4. move improved efficiency at least 10 times than common 3D printer;
5. the movement reducing common 3D printer XY axle large distance causes possible hugely to rock, and its move mode obviously rocks less, and it is little that extruder head moves inertia, and Product Precision is better;
6. this technology ensure that some strength, and inner filling is few again, and efficiency is double improve again.
The announcement of book and instruction according to the above description, those skilled in the art in the invention can also change above-mentioned embodiment and revise.Therefore, the present invention is not limited to detailed description of the invention disclosed and described above, also should fall in the protection domain of claim of the present invention modifications and changes more of the present invention.In addition, although employ some specific terms in this description, these terms just for convenience of description, do not form any restriction to the present invention.
Claims (10)
1. a high speed FDM3D printer, comprise housing, it is characterized in that: a cross bar that can move up and down along housing vertical direction is set in housing, housing inner bottom part arrange one can 360 ° rotate workbenches, described cross bar arranges one can along the extruder head of the left and right movement of this cross bar;
Described extruder head comprises barrel, arranges a screw rod in barrel, and the upper periphery side of described screw rod arranges helical teeth, and when this helical teeth rotates, the curved surface at place is just to charging aperture.
2. high speed FDM3D printer as claimed in claim 1, it is characterized in that: the axis of described helical teeth and screw rod is arranged at angle, this angular range is 1 ° to 90 °.
3. high speed FDM3D printer as claimed in claim 1, it is characterized in that: described helical teeth is evolvent type helical teeth, the modulus Zm of described helical teeth is 0.1 ~ 20, and reference diameter is 5 ~ 20mm.
4. high speed FDM3D printer as claimed in claim 1, is characterized in that: described charging aperture place is provided with a quiet cutter, and this quiet cutter and helical teeth are just to also coordinating the pelletizing realized line material.
5. high speed FDM3D printer as claimed in claim 1, it is characterized in that: described charging aperture place is socketed with the first heating jacket, the heating temperature range of this first heating jacket is 50 to 200 DEG C.
6. high speed FDM3D printer as claimed in claim 1, is characterized in that: the arranged outside of described barrel has the second heating jacket and the 3rd heating jacket.
7. high speed FDM3D printer as claimed in claim 1, is characterized in that: the top of described screw rod connects the first motor for controlling the rotation of screw rod.
8. high speed FDM3D printer as claimed in claim 1, it is characterized in that: the top of described screw rod connects the first travelling gear, this first transmitting gear engages the second travelling gear that a tip diameter is less than the first travelling gear.
9. the Method of printing of a 3D printer, it is characterized in that: comprise bench top module and the print module be arranged on cross bar for printer model, when carrying out 3D and printing, bench top module first rotates an angle, the region that needs are printed is positioned at the side of cross bar, and then print module moves back and forth in the side of cross bar and realizes 3D printing.
10. the Method of printing of 3D printer as claimed in claim 9, is characterized in that: the absolute value ordinate transform polar coordinates system of the model first printed by needs when implementing to print carries out output and prints.
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| CN201510231802.8A CN105034393A (en) | 2015-05-09 | 2015-05-09 | High-speed FDM 3D printer and printing method |
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| CN201510231802.8A CN105034393A (en) | 2015-05-09 | 2015-05-09 | High-speed FDM 3D printer and printing method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105666872A (en) * | 2016-02-25 | 2016-06-15 | 成都亨通兆业精密机械有限公司 | Automatic 3D printing system |
| CN105711098A (en) * | 2016-03-24 | 2016-06-29 | 东莞劲胜精密组件股份有限公司 | Plastic 3D printing method and product |
| CN106515007A (en) * | 2016-12-21 | 2017-03-22 | 浙江易桂塑胶有限公司 | 3D printer equipment |
| CN106914969A (en) * | 2017-02-07 | 2017-07-04 | 北京交通大学 | A kind of 3D printing method of concrete component |
| DE102016110337A1 (en) | 2016-06-03 | 2017-12-07 | WZR ceramic solutions GmbH | 3D printing of various inorganic materials |
| CN109263045A (en) * | 2018-10-22 | 2019-01-25 | 大连理工大学 | A kind of more extruder head switching devices |
| CN109367014A (en) * | 2018-11-13 | 2019-02-22 | 上海大学 | A kind of 3D printing method based on the five axial printing bend pipes in axis print platforms edge |
| KR102148637B1 (en) * | 2020-05-13 | 2020-08-27 | 청년선도기업협동조합 | Pellet Injection Method Of Pellet 3D printer And Pellet Transfer System |
| CN112720777A (en) * | 2020-12-25 | 2021-04-30 | 芜湖市爱三迪电子科技有限公司 | Ceramic production equipment based on 3D printing technology |
| US11167486B2 (en) | 2017-08-29 | 2021-11-09 | Magzero Llc | Three dimensional printer system |
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| CN102485467A (en) * | 2010-12-02 | 2012-06-06 | 张家港华明机械有限公司 | Foaming screw for foaming polystyrene (PS) picture frame section bar production line extruder |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105666872A (en) * | 2016-02-25 | 2016-06-15 | 成都亨通兆业精密机械有限公司 | Automatic 3D printing system |
| CN105711098A (en) * | 2016-03-24 | 2016-06-29 | 东莞劲胜精密组件股份有限公司 | Plastic 3D printing method and product |
| DE102016110337A1 (en) | 2016-06-03 | 2017-12-07 | WZR ceramic solutions GmbH | 3D printing of various inorganic materials |
| DE102016110337B4 (en) | 2016-06-03 | 2022-06-02 | WZR ceramic solutions GmbH | 3D printing of various inorganic materials |
| CN106515007A (en) * | 2016-12-21 | 2017-03-22 | 浙江易桂塑胶有限公司 | 3D printer equipment |
| CN106914969A (en) * | 2017-02-07 | 2017-07-04 | 北京交通大学 | A kind of 3D printing method of concrete component |
| US11167486B2 (en) | 2017-08-29 | 2021-11-09 | Magzero Llc | Three dimensional printer system |
| CN109263045A (en) * | 2018-10-22 | 2019-01-25 | 大连理工大学 | A kind of more extruder head switching devices |
| CN109263045B (en) * | 2018-10-22 | 2024-02-06 | 大连理工大学 | Multi-extrusion head switching device |
| CN109367014A (en) * | 2018-11-13 | 2019-02-22 | 上海大学 | A kind of 3D printing method based on the five axial printing bend pipes in axis print platforms edge |
| KR102148637B1 (en) * | 2020-05-13 | 2020-08-27 | 청년선도기업협동조합 | Pellet Injection Method Of Pellet 3D printer And Pellet Transfer System |
| CN112720777A (en) * | 2020-12-25 | 2021-04-30 | 芜湖市爱三迪电子科技有限公司 | Ceramic production equipment based on 3D printing technology |
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Application publication date: 20151111 |