CN107020742B - A kind of highly practical three-dimensional printer - Google Patents

A kind of highly practical three-dimensional printer Download PDF

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Publication number
CN107020742B
CN107020742B CN201710474011.7A CN201710474011A CN107020742B CN 107020742 B CN107020742 B CN 107020742B CN 201710474011 A CN201710474011 A CN 201710474011A CN 107020742 B CN107020742 B CN 107020742B
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CN
China
Prior art keywords
conveying
section
raw material
delivery pipe
top
Prior art date
Application number
CN201710474011.7A
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Chinese (zh)
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CN107020742A (en
Inventor
林逢春
吴立新
李少阳
胡中政
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泉州市比邻三维科技有限公司
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Priority to CN201710474011.7A priority Critical patent/CN107020742B/en
Publication of CN107020742A publication Critical patent/CN107020742A/en
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Publication of CN107020742B publication Critical patent/CN107020742B/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B33ADDITIVE MANUFACTURING TECHNOLOGY
    • B33YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y30/00Apparatus for additive manufacturing; Details thereof or accessories therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00Additive 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
    • B29C64/10Processes of additive manufacturing
    • B29C64/106Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
    • B29C64/118Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00Additive 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
    • B29C64/20Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B29C64/295Heating elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00Additive 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
    • B29C64/30Auxiliary operations or equipment
    • B29C64/307Handling of material to be used in additive manufacturing
    • B29C64/321Feeding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B33ADDITIVE MANUFACTURING TECHNOLOGY
    • B33YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y40/00Auxiliary operations or equipment, e.g. for material handling

Abstract

The present invention proposes a kind of highly practical three-dimensional printer,Break through the structural form of conventional three-dimensional printer,Heating element further heats the raw material between conveying housing and delivery pipe at the same time,The temperature of the raw material on the outside of delivery pipe and mobility is set to be above the temperature and mobility of the raw material on the inside of delivery pipe,I.e. the temperature of the raw material of bottom discharge passage outflow and mobility are above the temperature and mobility of the raw material of third channel outflow,In print procedure,The printable layer of heating inclined-plane and lower floor slightly cooled and solidified contacts,Can melt the upper surface of lower floor's printable layer,The raw material pad of subsequent bottom discharge passage outflow is between lower floor's printable layer that the raw material and surface that third channel flows out melt,The raw material of bottom discharge passage outflow plays the role of glued,The raw material of third channel outflow and lower floor's printable layer natural fusion is integral,Make to be not in obvious composition surface between upper strata printable layer and lower floor's printable layer,Engagement between adjacent print layer is more firm.

Description

A kind of highly practical three-dimensional printer

Technical field

The present invention relates to 3 D-printing machinery field, and in particular to a kind of highly practical three-dimensional printer.

Background technology

It is rapid shaping (Rapid that three-dimensional printer, which is also referred to as 3 D Printer (3D Printer, abbreviation 3DP), Prototyping, RP) a kind of technique, be layered by the way of layer upon layer and produce threedimensional model, its operational process is similar In conventional printer, only conventional printer is the plane drawing that two dimension is formed in ink printed to papery, and three-dimensional is beaten Print machine is that the materials such as liquid photosensitive resin material, the plastic wire of melting, land plaster, metal dust are passed through jet binder or crowded The mode such as go out and realize that layer upon layer is superimposed to form 3D solid.The structure of unit printer has been known, such as Chinese invention patent 201310559350.7 a kind of fusion sediment 3 D-printing nozzle and printer are disclosed, the spray of one of which fusion sediment 3 D-printing Head, including spiro rod machine tube, nozzle, screw shaft, wherein the nozzle is installed on spiro rod machine tube lower part, screw shaft is installed on screw machine In cylinder, the upper end of screw shaft can be provided with thread groove, the stack shell of spiro rod machine tube by shaft coupling and motor axis connection on lower semisection axis Top is provided with branch pipe, and for being installed into the plasticizing pipe of silk, the periphery of the spiro rod machine tube and branch pipe is provided with heating unit.It is described Branch pipe is three, is uniformly arranged in the stack shell top of spiro rod machine tube.The spiro rod machine tube lower part is provided with external screw thread, and nozzle is provided with With the matched internal thread of spiro rod machine tube lower external thread, nozzle is connected with spiro rod machine tube by thread fitting.The screw machine Cylinder is installed with thrust ball bearing and bearing (ball) cover in top, and screw shaft passes through thrust ball bearing and bearing (ball) cover.Heating dress Put and be made of heating mantle and thermistor, the heat that heating mantle produces melts silk, thermistor feedback temperature information, entirely Heating unit is closed loop thermal control system.The through hole or screw thread for being connected with printer are offered at the top of spiro rod machine tube Hole.A kind of fusion sediment three-dimensional printer, including above-described fusion sediment 3 D-printing nozzle.

The invention can produce stable motive force, effective to promote melting silk to be extruded from nozzle, but actually make During, the invention is as the other three-dimensional printers of in the market, and in successively the print procedure of raw material is accumulated, levels are beaten It is poor to print the accumulation existence time of layer, when when upper strata, printable layer is layered on lower floor's printable layer, lower floor's printable layer slightly cooled and solidified, on Layer printable layer be only to be layered on lower floor's printable layer, there are obvious composition surface, this composition surface be by upper and lower printable layer fusion not Caused by completely, so 3 D-printing finished product globality poor, is easily broken by composition surface, become the important of 3 D-printing finished product One of defect, and the smooth degree of transferring raw material has much room for improvement.

In consideration of it, inventor furthers investigate the above problem, there is this case generation then.

The content of the invention

It is an object of the invention to provide a kind of integral type engagement that can carry out melting completely formula to adjacent printable layer, beat It is strong and more firm to be printed as product globality, and material flow is smooth, highly practical highly practical three-dimensional printer.

In order to achieve the above object, the present invention uses such technical solution:

A kind of highly practical three-dimensional printer, including printer main body and the printhead on printer main body;Institute Stating printer main body includes print platform, carries out the movement device of action drives to printhead above print platform, is arranged on The heating box heated above print platform to raw material, and the feeding device being fed to heating box;The printhead is set It is connected with the movement device in the top of the print platform and is connected with the discharge port of the heating box;The printhead bag Conveying housing setting up and down is included, the delivery pipe being placed in conveying housing, the axis being placed in top in delivery pipe, is in down Square set is connected to conveying lever upper end and upward sliding runs through the core of the axis in the conveying lever in conveying housing and delivery pipe Bar, and it is connected to the discharging gate of conveying lever lower end;Conveying housing, delivery pipe, axis, conveying lever and the equal coaxial line of core bar Set;

The conveying housing includes the first conveying shell section in top, the second conveying shell section being below, Yi Jilian The 3rd conveying shell section for being connected between the first conveying shell section and the second conveying shell section and being from top to bottom tapered;Described second is defeated Send shell section to have and slide through first passage for conveying lever matching;

The delivery pipe is included in top and the described first conveying shell section corresponding first transportation section, and with described the The second transportation section that the medial surface of three conveying shell sections matches;The medial surface of first transportation section is formed with spiral from top to bottom First conveying screw thread of extension, the lateral surface of first transportation section is formed with the second conveying spiral shell from top to bottom extended spirally Line;The upper end of the delivery pipe is equipped with the of the first device of rotation driving that driving delivery pipe rotates and driving delivery pipe lifting One lifting drive;The lower end of second transportation section is formed with the first port slid through for conveying lever matching;

It is opposite with the delivery pipe rotation direction around core bar progress that the upper end of the axis is equipped with driving axis The second device of rotation driving rotated;

Material guide hole formed with coaxial extension up and down in the conveying lever, the upper end of the material guide hole are equipped multiple under The charging hole extended obliquely to the side face of the conveying lever between supreme, multiple charging hole uniform rings are around the material guide hole Axis distribution;It is corresponding between each charging hole and the top and bottom of first port;

The upper end of the core bar is equipped with the second lifting drive of driving core bar lifting;

The discharging gate includes the first discharging section being connected in top with the lower end of the described second conveying shell section, and is in Lower section and the second discharging section that extension is from top to bottom gradually tilted to the conveying housing side;The conveying housing has and institute The lower end for stating the second discharging section has towards corresponding first side and the second side opposite with the first side, first discharging section The second channel connected with the material guide hole lower end, second discharging section have the 3rd connected with the second channel lower end Passage, second discharging section include the first sloped sidewall of the first side of the closer conveying housing and closer conveying housing Second sloped sidewall of the second side;Second sloped sidewall has the ramp for being in top and the lower inclined plane being below, The distance between described ramp and lower inclined plane from top to bottom taper into;

The second conveying shell section has with the first side wall of the first sloped sidewall homonymy and is tilted with described second The second sidewall of side wall homonymy, the second sidewall include epimere corresponding with the conveying lever and with second inclined side The corresponding hypomere of wall;The first passage is in the epimere and lower section formed with the guide passage from top to bottom extended;It is described Guide passage includes corresponding with the conveying lever and the first discharging section in top and conveys what shell section connected with the described 3rd Top discharge passage, and be below corresponding with second discharging section and from top to bottom gradually along the lower inclined plane towards described The export direction of triple channel tilts the bottom discharge passage of extension;

It is equipped with the side wall of the conveying housing and the raw material between the conveying housing and the delivery pipe is heated The temperature of the raw material between conveying housing and delivery pipe and mobility is set to be all higher than the temperature and mobility of the raw material in delivery pipe Heating element;The heating element includes conveying corresponding first bringing-up section of shell section with described first, defeated with the described 3rd Send shell section corresponding second bringing-up section, and corresponding 3rd bringing-up section of the top discharge passage, and lead to the bottom discharge Corresponding 4th bringing-up section in road;The lower end of the hypomere is formed with from top to bottom gradually towards the exporter of the bottom discharge passage To the heating inclined-plane for tilting extension.

The upper end of second sloped sidewall is resisted against the lower end of the conveying lever, and the lower end of the conveying lever forms oriented The guiding extension that the ramp extension is oriented to the raw material in the material guide hole towards the third channel.

The third channel, the second sloped sidewall, bottom discharge passage and the angle of heating inclined-plane and horizontal plane diminish successively, And the angle of the third channel and horizontal plane is 15-30 °, the angle on the heating inclined-plane and horizontal plane is 5-15 °.

The first heat insulation layer is equipped with the side wall of the delivery pipe, the second insulation is covered with outside the conveying housing Layer.

The printhead is further included to be connected to storage and melts in top and the conveying housing and the second heat insulation layer Change the material-storing box of raw material, the material-storing box is connected with the heating box.

The 3rd heat insulation layer is equipped with the side wall of the material-storing box.

The top of the material-storing box is equipped with connecting plate, and the upper end of the delivery pipe, which is equipped with to upwardly extend, is through to the connection Transmission segment above plate, first device of rotation driving and the first lifting drive are by the transmission segment to the conveying Pipe is driven;The upper end of the axis, which is equipped with, extends upwardly to the first drive link of the connecting plate lower surface, and described second Device of rotation driving is driven the axis by first drive link;The upper end of the core bar is equipped with to upwardly extend and passes through Wear to the second drive link above the connecting plate, second lifting drive is by second drive link to the core Bar is driven.

First device of rotation driving and the second device of rotation driving are that output terminal is arranged on the connecting plate downward The motor on surface, first lifting drive and the second lifting drive are that output terminal is arranged on the connecting plate upward The motor of upper surface;First device of rotation driving is fixed on the connecting plate by fixed component;

The output terminal of first device of rotation driving has been fixedly and coaxially connected first gear, outside the upper end of the transmission segment Side face formed with the matched first tooth section of the first gear;The output terminal of second device of rotation driving is coaxially fixed Be connected with second gear, the upper end side face of first drive link formed with the matched second tooth section of the second gear;

The output terminal of first lifting drive carries out lifting biography by first level driver plate to the transmission segment Dynamic, the output terminal of first lifting drive has been fixedly and coaxially connected the first drive screw, the first level driver plate Formed with matched first threaded hole of first drive screw, formed with for described the on the inside of the upper end of the transmission segment The annular groove that one horizontal conveyor plate stretches into;The output terminal of second lifting drive is by the second horizontal conveyor plate to institute State the second drive link and carry out lifting and driving, the output terminal of second lifting drive has been fixedly and coaxially connected the second transmission spiral shell Bar, the second horizontal conveyor plate formed with matched second threaded hole of second drive screw, it is described second transmission The upper end side face of bar is formed with the card slot stretched into for the second horizontal conveyor plate.

After adopting the above technical scheme, the highly practical three-dimensional printer of the present invention, breaks through conventional three-dimensional printer Structural form, in practical work process, feeding device is by raw material supply to heating box, and heating box is by raw material heating and melting into stream Body, the raw material of thawing are entered in printhead, and to convey front of second side as walking in a horizontal state of housing, printhead is filled in action Third channel and bottom discharge passage is set to carry out 3 D-printing on print platform backwards under the drive put.Specifically, do not printing State, the first lifting drive driving delivery pipe make downwards the lower end of the second transportation section convey shell section and first passage by the 3rd Upper port closure, the second lifting drive driving core bar drives conveying lever charging hole is in the upper end of the first port downwards Lower section and blocked charging hole, when starting printing, under the driving of the first lifting drive, delivery pipe rises, the The lower end of two transportation sections does not block the upper port of the 3rd conveying shell section and first passage, core bar is driven conveying lever climb Bigger, make charging hole be higher than the first port upper end, the first device of rotation driving driving delivery pipe rotate by the raw material of thawing from The conveying downwards of the inner side of delivery pipe passes sequentially through charging hole, material guide hole and third channel outflow, while by the raw material of thawing from defeated Send the outside conveying downwards of pipe to pass sequentially through the 3rd conveying shell section, top discharge passage and the outflow of bottom discharge passage, and pad the 3rd Below the raw material of passage outflow;Heating element heats conveying housing, makes the heating inclined-plane of lower end have higher temperature, Heating element further heats the raw material between conveying housing and delivery pipe at the same time, makes the temperature of the raw material on the outside of delivery pipe Degree and mobility are above the temperature and mobility of the raw material on the inside of delivery pipe, i.e., the temperature of the raw material of bottom discharge passage outflow with Mobility is above the temperature and mobility of the raw material of third channel outflow, in print procedure, has heated inclined-plane and lower floor slightly The printable layer contact of cooled and solidified, can melt the upper surface of lower floor's printable layer, and the raw material pad of subsequent bottom discharge passage outflow exists Between lower floor's printable layer that the raw material of third channel outflow and surface are melted, the raw material of bottom discharge passage outflow plays glued work With, the raw material of third channel outflow and lower floor's printable layer natural fusion is integral, make upper strata printable layer and lower floor's printable layer it Between be not in obvious composition surface, the engagement between adjacent print layer is more firm, while also ensures in third channel The properties such as mobility of the raw material as the main material for forming printout are constant, do not change the designs such as main material initial flow ginseng Number, and then ensure that printout is less prone to deformation etc. in print procedure and influences the situation of quality;For mobility after thawing Larger raw material, the present invention also only can individually rise core bar and drive conveying lever, and be driven downwards using the first lifting drive Delivery pipe, makes the lower end of the second transportation section block the upper port of the 3rd conveying shell section and first passage, and then can only allow defeated The raw material on the inside of pipe is sent to flow out, it is not necessary to which the raw material on the outside of delivery pipe is that the raw material in delivery pipe and upper surface thawing can be achieved Lower floor's printable layer natural fusion is integral.Compared with prior art, highly practical three-dimensional printer of the invention, it can be to phase The integral type engagement of formula is melted in adjacent printable layer progress completely, and printout globality is strong and more firm, and material flow It is smooth, it is highly practical.

Brief description of the drawings

Fig. 1 is the easy structure schematic diagram of the present invention;

Fig. 2 is the First partial broken section structure diagram of the present invention;

Fig. 3 is the use state broken section structure diagram of the present invention;

Fig. 4 is the second local broken section structure diagram of the present invention;

Fig. 5 is the partial structural diagram of the present invention.

In figure:

1- printer main body 11- print platform 12- movement device 13- heating box 14- feeding device 2- printheads

21- conveying housings 211- first conveys shell section 212- second and conveys shell section 2121- first passage 2122- the first side walls 2123- second sidewall a1- epimere a2- hypomeres a21- heating inclined-plane a3- guide passage a31- top discharge passage a32- bottom discharges are led to Road 213- the 3rd conveys shell section the second heat insulation layers of 214-

22- delivery pipes 221- the first transportation section 2211- first convey the conveying screw threads of screw thread 2212- second 222- second and convey Section 2221- the first port 223- the first device of rotation driving 2231- fixed component 2232- first gears 224- first lifts driving Device 2241- first level driver plate 2242- the first drive screw 225- the first heat insulation layer 226- transmission segments 2261- first Tooth section 2262- annular grooves

23- axis 231- the second device of rotation driving 2311- second gears 232- the first drive link 2321- the second tooth sections

24- conveying lever 241- material guide hole 242- charging holes 243- is oriented to extension

25- core bars 251- the second lifting drive 2511- the second horizontal conveyor plate the second drive screws of 2512- 252- Two drive link 2521- card slots

26- discharging gates 261- the first discharging section 2611- second channels 262- the second discharging section 2621- third channels 2622- First sloped sidewall 2623- the second sloped sidewall 26231- ramp 26232- lower inclined plane 27- heating elements 271- first is heated The 3rd heat insulation layer 282- of the 4th bringing-up section 28- material-storing boxs 281- of section 272- the 3rd bringing-up section 274- of the second bringing-up section 273- connect Fishplate bar.

Embodiment

In order to further explain the technical solution of the present invention, it is described in detail below by specific embodiment.

A kind of highly practical three-dimensional printer of the present invention, as shown in Figs. 1-5, including printer main body 1 and arranged on beating Print the printhead 2 on owner's body 1;Printer main body 1 includes print platform 11, above print platform 11 to printhead 2 into The movement device 12 of row action drives, the heating box 13 heated above print platform 11 to raw material, and to heating box 13 feeding devices 14 being fed;The top that printhead 2 is arranged on print platform 11 is connected with movement device 12 and and heating box 13 discharge port connection;Printhead 2 includes conveying housing 21 setting up and down, the delivery pipe 22 being placed in conveying housing 21, place The axis 23 being placed in top in delivery pipe 22, is below the conveying lever 24 being placed in conveying housing 21 and delivery pipe 22, even It is connected to 24 upper end of conveying lever and upward sliding runs through the core bar 25 of axis 23, and is connected to the discharging gate of 24 lower end of conveying lever 26;Conveying housing 21, delivery pipe 22, axis 23, conveying lever 24 and core bar 25 are coaxially set;

Conveying housing 21 includes the first conveying shell section 211 in top, the second conveying shell section 212 being below, with And the 3rd conveying shell section for being connected between the first conveying shell section 211 and the second conveying shell section 212 and being from top to bottom tapered 213;Second conveying shell section 212 has slides through first passage 2121 for the matching of conveying lever 24;

Delivery pipe 22 is included in top and 211 corresponding first transportation section 221 of the first conveying shell section, and with it is the 3rd defeated The second transportation section 222 for sending the medial surface of shell section 213 to match;The medial surface of first transportation section 221 is formed with spiral shell from top to bottom First conveying screw thread 2211 of rotation extension, the lateral surface of the first transportation section 221 are defeated formed with second from top to bottom extended spirally Send screw thread 2212;The upper end of delivery pipe 22 is equipped with the first device of rotation driving 223 of the driving rotation of delivery pipe 22 and drives defeated The first lifting drive 224 for sending pipe 22 to lift;The lower end of second transportation section 222 matches slip formed with confession conveying lever 24 and wears The first port 2221 crossed;

The upper end of axis 23 is equipped with driving axis 23 and the rotation opposite with 22 rotation direction of delivery pipe is carried out around core bar 25 The second device of rotation driving 231;So when delivery pipe 22 is conveyed, the rotation direction phase of axis 23 and delivery pipe 22 Instead, the raw material that the outer surface drive of axis 23 is melted can be made to be produced relative to the conveying screw thread 2211 of delivery pipe 22 and first stronger Relative motion, be more conducive to delivery pipe 22 in raw material convey downwards.

Material guide hole 241 formed with coaxial extension up and down in conveying lever 24, the upper end of material guide hole 241 are equipped multiple under The charging hole 242 extended obliquely to the side face of conveying lever 24 between supreme, multiple 242 uniform rings of charging hole are around material guide hole 241 Axis distribution, this structure can ensure that charging hole 242 feed uniformity;The upper end of each 242 and first port 2221 of charging hole It is corresponding between lower end;

The upper end of core bar 25 is equipped with the second lifting drive 251 that driving core bar 25 lifts;

Discharging gate 26 includes the first discharging section 261 being connected in top with the lower end of the second conveying shell section 212, and is in Lower section and the second discharging section 262 that extension is from top to bottom gradually tilted to 21 side of conveying housing;Conveying housing 21 has and the The lower end of two discharging sections 262 towards corresponding first side and second side opposite with the first side, the first discharging section 261 have with The second channel 2611 of 241 lower end of material guide hole connection, the second discharging section 262 have the 3rd connected with 2611 lower end of second channel Passage 2621, the second discharging section 262 include the first sloped sidewall 2622 of closer conveying housing 21 first side and closer defeated Send the second sloped sidewall 2623 of 21 second side of housing;Second sloped sidewall 2623 has 26231 He of ramp in top The lower inclined plane 26232 being below, the distance between ramp 26231 and lower inclined plane 26232 from top to bottom taper into, this knot Structure is gradually contacted and merged with the raw material that third channel 2621 flows out easy to the raw material of bottom discharge passage a32 outflows naturally, with reference to Effect is more preferable, and being not likely to produce foam etc. influences the situation of product intensity;

Second conveying shell section 212 have with the first side wall 2122 of 2622 homonymy of the first sloped sidewall and with the second inclined side The second sidewall 2123 of 2623 homonymy of wall, second sidewall 2123 include epimere a1 corresponding with conveying lever 24 and are tilted with second The corresponding hypomere a2 of side wall 2623;First passage 2121 leads at epimere a1 and hypomere a2 formed with the guide from top to bottom extended Road a3;Guide passage a3 includes corresponding in 24 and first discharging section 261 of top and conveying lever and conveys shell section 213 with the 3rd The top discharge passage a31 of connection, and be below corresponding with the second discharging section 262 and from top to bottom gradually along lower inclined plane The 26232 bottom discharge passage a32 extended towards the export direction inclination of third channel 2621;

Convey to be equipped with the side wall of housing 21 and the raw material between conveying housing 21 and delivery pipe 22 is carried out by heating makes conveying The temperature and mobility of raw material between housing 21 and delivery pipe 22 are all higher than the temperature and mobility of the raw material in delivery pipe 22 Heating element 27;Heating element 27 includes conveying 211 corresponding first bringing-up section 271 of shell section with first, with the 3rd conveying Corresponding second bringing-up section 272 of shell section 213, with corresponding 3rd bringing-up sections 273 of top discharge passage a31, and and bottom discharge Corresponding 4th bringing-up sections 274 of passage a32;The lower end of hypomere a2 is formed with gradual tapping channel a32's downward from top to bottom Export direction tilts the heating inclined-plane a21 of extension, and the 4th bringing-up section 274 heats heating inclined-plane a21, makes heating inclined-plane A21 has higher temperature, and the lower floor that can make to be contacted prints melting layer.The present invention is in practical work process, feeding device Raw material heating and melting is entered printhead 2 by raw material supply by 14 to heating box 13, heating box 13 into fluid, the raw material of thawing In, to convey front of second side as walking in a horizontal state of housing 21, printhead 2 makes third channel under the drive of movement device 12 2621 and bottom discharge passage a32 carries out 3 D-printing on print platform 11 backwards.Specifically, in non-print state, first liter The lower end that drop driving device 224 drives delivery pipe 22 and makes the second transportation section 222 downwards conveys shell section 213 and first passage by the 3rd 2121 upper port closure, the second lifting drive 251 driving core bar 25 drive conveying lever 24 to be downwards in charging hole 242 The lower section of the upper end of first port 2221 and blocked charging hole 242, start printing when, in the first lifting drive Under 224 driving, delivery pipe 22 rises, and the lower end of the second transportation section 222 is not to the 3rd conveying shell section 213 and first passage 2121 Upper port closure, core bar 25 is driven 24 climb bigger of conveying lever, make charging hole 242 upper higher than the first port 2221 End, the first device of rotation driving 223 driving delivery pipe 22 rotate by the raw material of thawing from the inner side of delivery pipe 22 downwards conveying according to It is secondary to be flowed out by charging hole 242, material guide hole 241 and third channel 2621, while by the raw material of thawing from the outside of delivery pipe 22 Conveying downwards passes sequentially through the 3rd conveying shell section 213, top discharge passage a31 and bottom discharge passage a32 outflows, and pads in threeway Below the raw material that road 2621 flows out;Heating element 27 to conveying housing 21 heat, make lower end heating inclined-plane a21 have compared with High temperature, while heating element 27 further heats the raw material between conveying housing 21 and delivery pipe 22, makes conveying The temperature and mobility of the raw material in the outside of pipe 22 are above the temperature and mobility of the raw material of the inner side of delivery pipe 22, i.e. bottom discharge is led to The temperature and mobility of the raw material of road a32 outflows are above the temperature and mobility of the raw material of the outflow of third channel 2621, are beating During print, the printable layer of heating inclined-plane a21 and lower floor slightly cooled and solidified contacts, and can melt the upper surface of lower floor's printable layer Change, lower floor's printing that the raw material and surface that the raw material pad that subsequent bottom discharge passage a32 flows out is flowed out in third channel 2621 melt Between layer, the raw material of bottom discharge passage a32 outflows plays the role of glued, the raw material that third channel 2621 is flowed out and lower floor's printing Layer natural fusion is integral, and it is not in obvious composition surface between upper strata printable layer and lower floor's printable layer to make, adjacent print layer Between engagement it is more firm, while also ensure the raw material in third channel 2621 as the main material for forming printout The properties such as mobility are constant, do not change the design parameters such as main material initial flow, and then ensure printout in print procedure In be less prone to deformation etc. influence quality situation;For the raw material that mobility after thawing is larger, the present invention can also only individually on Rise core bar 25 and drive conveying lever 24, and delivery pipe 22 is driven downwards using the first lifting drive 224, make the second transportation section 222 lower end blocks the upper port of the 3rd conveying shell section 213 and first passage 2121, and then can only allow the inner side of delivery pipe 22 Raw material outflow, it is not necessary to the raw material in the outside of delivery pipe 22 is that raw material in delivery pipe 22 can be achieved and lower floor that upper surface is melted Printable layer natural fusion is integral.Concrete structure can be that printhead 2 is equipped with the driving device that driving printhead 2 rotates, this drive The direction of walking in a horizontal state carries out rotation adjustment to printhead 2 when dynamic device can be printed according to printhead 2, makes 2621 He of third channel Bottom discharge passage a32 is towards rear.The concretely electric heating tube of heating element 27.Bottom discharge passage a32 is concretely with the 3rd The corresponding flat of width of passage 2621.The upper end of first discharging section 261 is formed with being stuck in the of 2122 lower end of the first side wall One fixture block, 2122 lower end of the first side wall is formed with the second fixture block being stuck in below the first fixture block.

Preferably, the upper end of the second sloped sidewall 2623 is resisted against the lower end of conveying lever 24, and the lower end of conveying lever 24 is formed Oriented ramp 26231 extends the guiding extension 243 being oriented to the raw material in material guide hole 241 towards third channel 2621. In actual use, the upper end of the second sloped sidewall 2623 can carry out conveying lever 24 spacing, guiding extension to the present invention 243 raw materials that can be flowed out to material guide hole 241 are oriented to, and especially after delivery pipe 22 rises, being oriented to extension 243 makes this The raw material smoothly outflow out of third channel 2621, avoids enter into bottom discharge passage a32 and is mixed with the raw material in guide passage a3.

Preferably, third channel 2621, the second sloped sidewall 2623, bottom discharge passage a32 and heating inclined-plane a21 and level The angle in face diminishes successively, this structure can be such that third channel 2621 and bottom discharge passage a32 from top to bottom increasingly gathers, more just In third channel 2621 flow out raw material contact and combine with the bottom discharge passage a32 raw materials flowed out, and third channel 2621 and The angle of horizontal plane is 15-30 °, and specific angle can be 15,20,25 or 30 °, and the setting at this inclination angle is more convenient for third channel 2621 In raw material flow out and be laid on the raw material of bottom discharge passage a32 outflows, the angle for heating inclined-plane a21 and horizontal plane is 5- 15 °, specific angle can be 5,8,10,13 or 15 °, and the setting at this inclination angle heating inclined-plane a21 that is more convenient for takes advantage of a situation with lower floor printable layer Contact and effectively heating surface (area) (HS is sufficiently large, the thawing for lower floor's printable layer upper surface of being more convenient for.

Preferably, the first heat insulation layer 225 is equipped with the side wall of delivery pipe 22, the second guarantor is covered with outside conveying housing 21 Warm thermal insulation layer 214.In actual use, the first heat insulation layer 225 can avoid heating element 27 and delivery pipe to the present invention The heat transfer of 22 outside raw materials avoids the normal design mobility of raw material in delivery pipe 22 from being subject to the raw material in delivery pipe 22 Influence, further ensure that final product quality;Second heat insulation layer 214 can ensure the heat insulation effect of whole printhead 2, and to the external world Object is effectively protected, and will not at least scald staff.

Preferably, printhead 2 is further included is connected to store up in top and conveying 21 and second heat insulation layer 214 of housing The material-storing box 28 for melting raw material is deposited, material-storing box 28 is connected with heating box 13.In actual use, material-storing box 28 can by the present invention The raw material melted in heating box 13 is collected storage, then the interior outside of delivery pipe 22 is fed at the same time, it can be ensured that The stability of feed.

Preferably, it is equipped with the 3rd heat insulation layer 281 in the side wall of material-storing box 28.The present invention in actual use, 3rd heat insulation layer 281 can ensure that the heat insulation effect of material-storing box 28, and then ensure the thawing raw material for flowing through to come from heating box 13 Appointing in material-storing box 28 so has satisfactory temperature and mobility.

Preferably, the top of material-storing box 28 is equipped with connecting plate 282, and the upper end of delivery pipe 22, which is equipped with, upwardly extends the company of being through to The transmission segment 226 of the top of fishplate bar 282, the first device of rotation driving 223 and the first lifting drive 224 pass through transmission segment 226 Delivery pipe 22 is driven;The upper end of axis 23 is equipped with the first drive link 232 for extending upwardly to 282 lower surface of connecting plate, Second device of rotation driving 231 is driven axis 23 by the first drive link 232;The upper end of core bar 25 is equipped with and upwardly extends The second drive link 252 of the top of connecting plate 282 is through to, the second lifting drive 251 is by the second drive link 252 to core bar 25 are driven.

Preferably, the first device of rotation driving 223 and the second device of rotation driving 231 are that output terminal is arranged on connection downward The motor of 282 upper surface of plate, the first lifting drive 224 and the second lifting drive 251 are that output terminal is arranged on upward The motor of 282 upper surface of connecting plate;First device of rotation driving 223 is fixed on connecting plate 282 by fixed component 2231;

The output terminal of first device of rotation driving 223 has been fixedly and coaxially connected first gear 2232, the upper end of transmission segment 226 Outer circumferential surface formed with the matched first tooth section 2261 of first gear 2232;The output terminal of second device of rotation driving 231 is same Axis is fixedly connected with second gear 2311, and the upper end side face of the first drive link 232 is formed with matched with second gear 2311 Second tooth section 2321;

The output terminal of first lifting drive 224 lifts transmission segment 226 by first level driver plate 2241 Transmission, the output terminal of the first lifting drive 224 have been fixedly and coaxially connected the first drive screw 2242, first level driver plate 2241 formed with 2242 matched first threaded hole of the first drive screw, formed with for the on the inside of the upper end of transmission segment 226 The annular groove 2262 that one horizontal conveyor plate 2241 stretches into;The output terminal of second lifting drive 251 passes through the second horizontal biography Movable plate 2511 carries out lifting and driving to the second drive link 252, and the output terminal of the second lifting drive 251 has been fixedly and coaxially connected Second drive screw 2512, the second horizontal conveyor plate 2511 formed with 2512 matched second screw thread of the second drive screw Hole, the upper end side face of the second drive link 252 is formed with the card slot 2521 stretched into for the second horizontal conveyor plate 2511.The present invention is in reality During the use of border, the first device of rotation driving 223 has multiple vertical bars by first gear 2232 and 226 upper end of transmission segment First tooth section 2261 of shape tooth is engaged, and rotation driving is carried out to transmission segment 226, and transmission segment 226 drives delivery pipe 22 to rotate;The Two device of rotation driving 231 have the second of multiple vertical bar shaped teeth by 2311 and first drive link of second gear, 232 upper end Tooth section 2321 is engaged, and rotation driving is carried out to the first drive link 232, and the first drive link 232 drives axis 23 to rotate;First liter Drop driving device 224 carries out first level driver plate 2241 lifting driving by the first drive screw 2242, and first level passes Movable plate 2241 drives transmission segment 226 to carry out lifting action by being caught in the annular groove 2262 of 226 upper end of transmission segment, due to ring Connected in star 2262 is recessed with annular to have no effect on first level driver plate 2241 around the rotation of the annular of a circle, transmission segment 226 The snap-fit relationship of groove 2262, and first gear 2232 is engaged with the first tooth section 2261 by the bar shaped tooth extended up and down, is passed The lifting of dynamic section 226 also has no effect on the matching relationship of 2232 and first tooth section 2261 of first gear;Second lifting drive 251 carry out the second horizontal conveyor plate 2511 lifting driving by the second drive screw 2512, and the second horizontal conveyor plate 2511 is logical Cross and be caught in the card slot 2521 of 252 upper end of the second drive link to drive the second drive link 252 to carry out lifting action.

The product form of the present invention is not limited to this case diagram and embodiment, anyone carries out it the appropriate of similar thinking Change or modification, all should be regarded as not departing from the patent category of the present invention.

Claims (8)

1. a kind of highly practical three-dimensional printer, including printer main body and the printhead on printer main body;It is described Printer main body includes print platform, the movement device of action drives is carried out to printhead above print platform, arranged on beating The heating box heated above print platform to raw material, and the feeding device being fed to heating box;The printhead is arranged on The top of the print platform is connected with the movement device and is connected with the discharge port of the heating box;It is characterized in that:Institute Stating printhead includes conveying housing setting up and down, and the delivery pipe being placed in conveying housing, is placed in delivery pipe in top Axis, is below the conveying lever being placed in conveying housing and delivery pipe, is connected to conveying lever upper end and upward sliding runs through institute The core bar of axis is stated, and is connected to the discharging gate of conveying lever lower end;Conveying housing, delivery pipe, axis, conveying lever and the core Bar is coaxially set;
The conveying housing includes the first conveying shell section in top, the second conveying shell section being below, and is connected to The 3rd conveying shell section being tapered between first conveying shell section and the second conveying shell section and from top to bottom;The second conveying shell Section has slides through first passage for conveying lever matching;
The delivery pipe is included in top and the described first conveying shell section corresponding first transportation section, and with it is the described 3rd defeated The second transportation section for sending the medial surface of shell section to match;The medial surface of first transportation section is formed with from top to bottom extending spirally The first conveying screw thread, the lateral surface of first transportation section is formed with the second conveying screw thread from top to bottom extended spirally;Institute The upper end for stating delivery pipe is equipped with first liter that the first device of rotation driving that driving delivery pipe rotates is lifted with driving delivery pipe Driving device drops;The lower end of second transportation section is formed with the first port slid through for conveying lever matching;
The upper end of the axis is equipped with driving axis and the rotation opposite with the delivery pipe rotation direction is carried out around the core bar The second device of rotation driving;
Material guide hole formed with coaxial extension up and down in the conveying lever, the upper end of the material guide hole be equipped with it is multiple from the bottom to top Between the charging hole that extends obliquely to the side face of the conveying lever, axis of multiple charging hole uniform rings around the material guide hole Line is distributed;It is corresponding between each charging hole and the top and bottom of first port;
The upper end of the core bar is equipped with the second lifting drive of driving core bar lifting;
The discharging gate includes the first discharging section being connected in top with the lower end of the described second conveying shell section, and is below And the second discharging section of extension is from top to bottom gradually tilted to the conveying housing side;The conveying housing has and described the The lower end of two discharging sections has and institute towards corresponding first side and the second side opposite with the first side, first discharging section The second channel of material guide hole lower end connection is stated, second discharging section has the threeway connected with the second channel lower end Road, second discharging section include the first sloped sidewall and closer conveying housing the of closer conveying housing first side Second sloped sidewall of two sides;Second sloped sidewall has ramp and the lower inclined plane being below, institute in top The distance between ramp and lower inclined plane is stated from top to bottom to taper into;
The second conveying shell section have with the first side wall of the first sloped sidewall homonymy and with second sloped sidewall The second sidewall of homonymy, the second sidewall include epimere corresponding with the conveying lever and with second sloped sidewall pair The hypomere answered;The first passage is in the epimere and lower section formed with the guide passage from top to bottom extended;The guide Passage include in top it is corresponding with the conveying lever and the first discharging section and with the described 3rd convey shell section connect on go out Expect passage, and be below corresponding with second discharging section and from top to bottom gradually along the lower inclined plane towards the threeway The export direction in road tilts the bottom discharge passage of extension;
It is described conveying housing side wall in be equipped with to it is described conveying housing and the delivery pipe between raw material carry out heating make it is defeated Send the temperature of raw material and adding for mobility that the temperature of the raw material between housing and delivery pipe and mobility are all higher than in delivery pipe Thermal part;The heating element includes conveying corresponding first bringing-up section of shell section with described first, with the described 3rd conveying shell Corresponding second bringing-up section of section, and corresponding 3rd bringing-up section of the top discharge passage, and with the bottom discharge passage phase Corresponding 4th bringing-up section;The lower end of the hypomere towards the export direction of the bottom discharge passage formed with from top to bottom gradually inclining The heating inclined-plane tiltedly extended.
A kind of 2. highly practical three-dimensional printer according to claim 1, it is characterised in that:Second sloped sidewall Upper end be resisted against the lower end of the conveying lever, the lower end of the conveying lever forms the oriented ramp and extends to the guide The guiding extension that raw material in hole is oriented to towards the third channel.
A kind of 3. highly practical three-dimensional printer according to claim 2, it is characterised in that:The third channel, Two sloped sidewalls, bottom discharge passage and the angle of heating inclined-plane and horizontal plane diminish successively, and the third channel and horizontal plane Angle be 15-30 °, the heating inclined-plane and the angle of horizontal plane are 5-15 °.
A kind of 4. highly practical three-dimensional printer according to any one of claim 1-3, it is characterised in that:It is described defeated Send and the first heat insulation layer is equipped with the side wall of pipe, the second heat insulation layer is covered with outside the conveying housing.
A kind of 5. highly practical three-dimensional printer according to claim 4, it is characterised in that:The printhead further includes The material-storing box that raw material is melted in storage, the material-storing box are connected to the conveying housing and the second heat insulation layer in top Connected with the heating box.
A kind of 6. highly practical three-dimensional printer according to claim 5, it is characterised in that:The side wall of the material-storing box Inside it is equipped with the 3rd heat insulation layer.
A kind of 7. highly practical three-dimensional printer according to claim 6, it is characterised in that:The top of the material-storing box Equipped with connecting plate, the upper end of the delivery pipe is equipped with the transmission segment for upwardly extending and being through to above the connecting plate, and described first Device of rotation driving and the first lifting drive are driven the delivery pipe by the transmission segment;The axis it is upper End is equipped with the first drive link for extending upwardly to the connecting plate lower surface, and second device of rotation driving passes through described first Drive link is driven the axis;The upper end of the core bar is equipped with second for upwardly extending and being through to above the connecting plate Drive link, second lifting drive are driven the core bar by second drive link.
A kind of 8. highly practical three-dimensional printer according to claim 7, it is characterised in that:Described first rotates driving Device and the second device of rotation driving are the motor that output terminal is arranged on the connecting plate upper surface downward, and first lifting is driven Dynamic device and the second lifting drive are the motor that output terminal is arranged on the connecting plate upper surface upward;Described first rotates Driving device is fixed on the connecting plate by fixed component;
The output terminal of first device of rotation driving has been fixedly and coaxially connected first gear, the upper end outer circumferential surface of the transmission segment Formed with the matched first tooth section of the first gear;The output terminal of second device of rotation driving is fixedly and coaxially connected Have a second gear, the upper end side face of first drive link formed with the matched second tooth section of the second gear;
The output terminal of first lifting drive carries out lifting and driving, institute by first level driver plate to the transmission segment The output terminal for stating the first lifting drive has been fixedly and coaxially connected the first drive screw, the first level driver plate formed with With matched first threaded hole of first drive screw, the upper end inner side of the transmission segment is formed with for the first level The annular groove that driver plate stretches into;The output terminal of second lifting drive is by the second horizontal conveyor plate to described second Drive link carries out lifting and driving, and the output terminal of second lifting drive has been fixedly and coaxially connected the second drive screw, institute State the second horizontal conveyor plate formed with matched second threaded hole of second drive screw, second drive link it is upper End side face is formed with the card slot stretched into for the second horizontal conveyor plate.
CN201710474011.7A 2017-06-21 2017-06-21 A kind of highly practical three-dimensional printer CN107020742B (en)

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CN107020742A (en) 2017-08-08

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