CN105313341B - A kind of three-dimensional printer - Google Patents
A kind of three-dimensional printer Download PDFInfo
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- CN105313341B CN105313341B CN201510938247.2A CN201510938247A CN105313341B CN 105313341 B CN105313341 B CN 105313341B CN 201510938247 A CN201510938247 A CN 201510938247A CN 105313341 B CN105313341 B CN 105313341B
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- platen
- printhead
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- printing
- stack shell
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- 239000000463 material Substances 0.000 claims abstract description 105
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- 239000002994 raw material Substances 0.000 claims abstract description 54
- 238000010079 rubber tapping Methods 0.000 claims abstract description 46
- 238000007599 discharging Methods 0.000 claims abstract description 45
- 238000007493 shaping process Methods 0.000 claims abstract description 35
- 238000006073 displacement reaction Methods 0.000 claims abstract description 22
- 239000000049 pigment Substances 0.000 claims description 75
- 238000002156 mixing Methods 0.000 claims description 71
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Abstract
The invention discloses a kind of three-dimensional printer, including mainframe, discharging printhead, shaping printing platen, also include a printhead displacement governor motion for being used to drive discharging printhead movement, discharging printhead is provided with the printhead feed end for being input into printing raw material, the tapping channel connected with printhead feed end is provided with discharging printhead, shaping printing platen includes determining platen, dynamic platen, for the platen displacement governor motion for driving dynamic platen to move up and down, also include at least one side supporting platen, at least one can drive the collateral support driving structure that side supporting platen enters in the range of directly over shaping printing platen.The beneficial effects of the invention are as follows：Can be adjusted according to support demand, a part of non-print type bottom support and the collateral support of non-print type are neatly provided, the demand of printing support is reduced, printing effect can be improved, the risk of product local collapse is reduced, saved backing material, and can guarantee that the stability of product in print procedure.
Description
Technical field
The invention belongs to 3D printing technique field, more particularly to a kind of three-dimensional printer.
Background technology
3D printer, also known as three-dimensional printer (3DP), is using a kind of machine of accumulation manufacturing technology, i.e. RP technique
Device.Based on 3D printing technique is a kind of mathematical model file, with molten plastic etc. can jointing material, by printing from level to level
Jointing material manufacture the object of three-dimensional, namely with successively printing type come the technology of constructed object.3D printer at this stage
It is be used to manufacture product more.
3D printer mainly includes print structure（Printhead）, shaping printing platen（Product is molded thereon）And printhead
Displacement governor motion（The position of printhead can spatially be changed so that the raw material for printing can fall in shaping printing platen
The diverse location of top, to realize that product is three-dimensionally shaped）.During 3D printing equipment printed product, it is frequently encountered needs and beats " branch
Support " situation, such as one product part is hanging, then the overhanging portion obviously cannot directly print sizing, it is necessary to
" support " is first printed below overhanging portion, the overhanging portion is then printed in support, after formed product, then remove " branch
Support "." support " can select the material for easily departing from, it is also possible to make hollow-core construction, facilitate later separation to remove.But, every dozen
One " support " of print, can all consume more materials and time-write interval, and the bearing capacity of " support " is also limited（Ensure
" support " easily separated removal）If supporting higher larger, also easily cause product local collapse and even damage.However, current 3D
Printing device, is saving " support " volume, quantity, lifts the aspect such as printing effect and print procedure stability, has still been short of.
The content of the invention
The present invention is to overcome deficiency of the prior art, there is provided a kind of rational in infrastructure, can neatly provide one
Divide non-print type bottom support and the collateral support of non-print type, reduce the demand of printing support, printing effect, reduction product office can be improved
Risk that portion collapses, backing material is saved, can guarantee that the good three-dimensional printer of product stability in print procedure.
To achieve these goals, the present invention uses following technical scheme：
A kind of three-dimensional printer, including mainframe, discharging printhead, shaping printing platen, are also used to drive out including one
Material printhead is moved so as to change the printhead displacement governor motion of discharging print head position, and the discharging printhead is provided with use
In the printhead feed end of input printing raw material, the discharging connected with printhead feed end is provided with the discharging printhead and is led to
Road, the shaping printing platen includes that determining platen, at least one dynamic platen moving up and down and dynamic platen corresponds and use
In the platen displacement governor motion for driving dynamic platen to move up and down, also including at least one side supporting platen, at least one can band
The collateral support driving structure that dynamic side supporting platen enters in the range of directly over shaping printing platen, side supporting platen and side supporting part
Dynamic structure is corresponded.Discharging printhead is used to export printing raw material（Such as molten plastic）To shaping printing platen, printhead position
Moving governor motion is used to adjust the relative position between discharging printhead and shaping printing platen（Begin in discharging printhead discharging direction
Under all morning, change is horizontal level and height）.Shaping printing platen is included determines platen and at least one dynamic platen, determines platform
Board position will not change, and dynamic platen can then be adjusted up and down.In this way, when starting printing, when certain part needs to print " support ", then
The dynamic platen of the part correspondence position can rise, such that it is able to save all or part " support " at this needed for script, or
Person needs to print " support " when certain part, then one of side supporting platen can be moved horizontally to position corresponding to the part
Lower section, is then printed again, and two kinds of Auxiliary supports are combined, and are adapted to the printing of diversified forms, shape, effectively save
Time-write interval, " support " raw material, and after reducing " support ", overall load ability is also improved, contribute to lifting printed
The stability of shaped article and total in journey.
Preferably, the platen displacement governor motion includes the first servo cylinder, the first servo cylinder includes the first cylinder
Body, First piston bar, the scalable direction of First piston bar are vertical, in dynamic platen in correspondence with each other and platen displacement governor motion
In：The dynamic platen lower end of First piston bar connection.Whether cylinder/oil cylinder, servo cylinder/servo-cylinder, as long as dynamic platform can be realized
The height regulation of plate, it is also possible to from other any conventional governor motions, such as screw body.
Preferably, the collateral support driving structure includes edge-on base, the second servo cylinder on edge-on base, second
Servo cylinder includes the second cylinder body, second piston bar, the scalable direction of second piston bar and plane-parallel, in correspondence with each other
Side supporting platen with it is collateral support driving structure in：Second piston bar is connected with side supporting platen.Whether cylinder/oil cylinder, watch
Convinced cylinder/servo-cylinder, as long as the transverse shifting regulation of side supporting platen can be realized, it is also possible to any conventional from other
Governor motion, such as screw body.
Preferably, the shaping printing platen is a plectane, when any second piston bar reaches extreme position,
The side supporting platen for connecting the second piston bar is in the range of shaping printing platen surface, and any second piston bar is retracted to
During extreme position, the side supporting platen for connecting the second piston bar is in outside mainframe.When i.e. piston rod withdraws, on the piston rod
Side supporting platen have left shaping printing platen directly over scope, will not with printhead interference, do not interfere with normal print.
Preferably, the tapping channel is vertically and in cylinder, discharging printhead is described on a printing caster bed frame
Printhead displacement governor motion is a parallel institution, and parallel institution includes three side chains in parallel, and side chain in parallel includes two regulations
Bar, a band motion block moving up and down, globular hinge between the band motion block and adjusting rod upper end in same side chain in parallel are each to adjust
Globular hinge between pole lower end and printhead stand, three side chains in parallel are uniformly distributed along the circumference of tapping channel." spherical hinge
Connect ", also make " ball-type is hinged ", " ball pivot ".This programme gives a form for 3-freedom parallel mechanism, by each band motion block
Move up and down so that the angle of each adjusting rod and height change, with drive printhead stand and discharging printhead enter
Movement in the upward movement of water-filling square and short transverse.
Preferably, the side chain in parallel also includes side chain motor, vertical guide bar, transmission mechanism, transmission mechanism includes master
Driving wheel, driven pulley, the driving belt for bypassing driving wheel and driven pulley, driving belt head and the tail are closed, in same side chain in parallel：
The rotational power of driving wheel come from side chain motor, band motion block and vertical guide bar between be slidably connected, with motion block can
Vertically, band motion block is provided with determines hole, hole living to glide direction, determines hole, Kong Jun living through the upper and lower surface of band motion block, and driving belt is worn
Cross and determine hole, hole living, driving belt is fixedly connected between being in the part and band motion block determined in hole.Side chain motor passes through driving wheel band
Dynamic driving belt is rotated, and driven pulley plays a part of to position and coordinate tensioning driving belt.Driving belt can be with band motion block
Lower movement, when band motion block is moved up and down, relative position is constant all the time between driving belt is in the part and band motion block determined in hole,
And then have relative movement between part that driving belt is in hole living and band motion block.
Preferably, also include an additive color endless tube, it is outer and coaxial with tapping channel that additive color endless tube is enclosed within discharging printhead, plus
Colour circle pipe be provided with many colour tube, colour tube inlet communication additive color endless tube, colour tube outlet tapping channel, each colour tube
Circumferentially it is uniformly distributed along tapping channel, the additive color endless tube is switched to pigment cylinder by pigment delivery pump.Pigment delivery pump is by face
Pigment in barrel（That is dye, colouring matter）It is transported to additive color endless tube, be input into out for pigment by each colour tube by additive color endless tube
Material passage, so as to can be coloured to printing raw material in tapping channel.The coloring mode, can be former without carrying out printing in advance
Mediation between material and pigment, it is to avoid after printing raw material reconciles with pigment, easily in mixed material（With pigment）Storage container
It is middle deposition layering occur（Pigment and printing raw material sink frivolous again）, caused by follow-up printing when mixed material lack of homogeneity ask
Topic.And, 3D printing raw material is not necessarily fused raw material（Molten plastic etc.）, or solid bar material（Solid bar shaped
Material is just heated melting after tapping channel is entered）, the coloring mode of this programme can just meet the coloring of such printing raw material.
Preferably, being provided with the heat insulation cylinder coaxial with tapping channel in the tapping channel, heat insulation cylinder upper and lower end is opened
Mouthful, heat insulation cylinder is connected by connecting rod with discharging printhead, forms thin between heat insulation cylinder lateral wall and the conduit wall of tapping channel
Expect chrominance channel, colour tube outlet towards heat insulation cylinder lateral wall, colour tube exit and be provided with coloring check valve.During coloring, at least
Ensure final printing material（From printhead to the material of shaping printing platen solidify afterwards sizing）Outer surface fully colours（Final printing
Material is internal to also still allow for some pigment, but more few better, and internal pigment content is higher, more influences the intensity of final printing material and whole
Body structural stability, also more takes pigment）.Pigment is directly input into the coloring mode of tapping channel, although advantage is a lot, but
Relatively large number of pigment is easily consumed, because, pigment is in the fused raw material for entering tapping channel, touch relatively-high temperature
Afterwards, easily it is mixed into fused raw material, if amount of pigment is insufficient, it may appear that final printing material surface coloring is incomplete, coloring degree
Not enough problem, and it is abundant in order to ensure final printing material surface coloring, just have to be input into relatively large number of pigment, so
One, can there is the intensity and overall load of above-mentioned final printing material in the pigment that is mixed into inside final printing material or a lot
The poor deficiency of ability.Furthermore, for the relative printing raw material of pigment, sticky big, poor fluidity, easy be heated caking, even zoom,
Amount of pigment is big in tapping channel（Content ratio is high）When, easily cause the blocking of discharging printhead.And in this programme, employ
After the printing raw material of melting is flow at heat insulation cylinder from the top down in heat-insulated barrel structure, tapping channel, temporarily it is divided into by heat insulation cylinder
Inside and outside two parts, heat insulation cylinder house print raw material still possesses of a relatively high temperature, is normally flowed down from inside heat insulation cylinder, heat-insulated
The outside printing raw material of cylinder is in during thin material chrominance channel, and relative thickness is relatively thin, and can quick, constantly touch the face of input
Material, starts to be sufficiently mixed（Printing raw thickness is thin during thin material chrominance channel, is easily combined fully with pigment）, and part printing
Raw material can lower the temperature（It is preferably controlled in the slightly above temperature values of solidification temperature）, colouring, leave after thin material chrominance channel
With the raw material of other relatively-high temperatures（The printing raw material flowed down from inside heat insulation cylinder）During contact, outer layered material（Pigment adds raw material）In
Raw material can absorb heat intensification first, be individually heated intensification rather than pigment is allowed（Do not have during heat insulation cylinder to be exactly that pigment is individually heated liter
Temperature）, an of short duration protective effect is served equivalent to external layer pigment, and in this of short duration guard time, it is overall former
Material has been moved off discharging printhead and starts to print, solidifies, such that it is able to ensure that it is high and stable that outer layer colours abundant, coloring degree.
Additionally, heat insulation cylinder yet forms both a barrier structure, when pigment enters tapping channel, with certain impulsive force（Pigment is sent into
Need pressure）If directly colouring, pigment is easier to be mixed into inside printing raw material, and has heat insulation cylinder, can ensure pigment
Full and uniform in thin material chrominance channel can only scatter, and the printing raw material to thin material in chrominance channel is coloured, and is fully saved
Pigment has been saved, final printing material inside pigment content has been it also avoid too high.
Preferably, the printhead feed end is switched to the mixing discharge end of a mixing drum by a feeding engine, mixing
Cylinder is provided with a charging aperture, also including some material tubes for cylinder charging aperture feed, melting heater is provided with material tube,
Mixing discharge end is provided with outlet valve, and the mixing axle driven by hybrid electric motor is provided with the mixing drum, and the mixing axle is provided with
Some agitation blades.In the case of directly being fed using fused raw material, fused raw material is in addition to single material, or compound
（Difference material mixing, or material mixes with pigment）.Each single raw material of solid-state is melted or melted in material tube, into mixing drum,
Now mixing axle can just drive agitation blades to be stirred, and lift the uniformity of compound.
Preferably, the mixing drum is cylindrical, mixing drum includes stack shell, cylinder bottom, cylinder top, and cylinder charging aperture is located at cylinder
Top, mixing drum is fixed in tub located at one, and mixing drum is rotated with fixed tub and is connected, and the center of rotation of mixing drum is stack shell axle
Line, also including a main motor for driving stack shell to be rotated around stack shell axis, mixing discharge end is the row that one and cylinder bottom are fixed
Expects pipe and the blow-off valve being located in drainage conduit, drainage conduit, mixing drum, mixing axle are coaxial, and feeding engine is by material receiving tube and row
Expects pipe is connected, and drainage conduit is rotated with material receiving tube and is connected, and material receiving tube is fixed in fixed tub, and at least four pieces arcs are provided with stack shell
Plate, arc plate outer surface can fit with stack shell interior sidewall surface, and each arc plate is uniformly distributed along the circumference of mixing axle, between adjacent arcs plate
Space be side material passing passage, arc plate is provided with some sideslip bars, sideslip bar through stack shell side wall and with stack shell side walls
Connection, sideslip bar outer end is in outside stack shell, and sideslip bar outer end is provided with pressing plate, and pressing plate is provided with balancing weight, between pressing plate and stack shell
It is provided with some returning springs, returning spring one end connection pressing plate, returning spring other end connection stack shell outer side surface.Fixed tub
Maintain static, stack shell can be rotated, mixing axle can also be rotated, certainly, in practical operation, preferably allow stack shell and mixing axle anti-
It is to rotation, if rotating Vortex, velocity of rotation otherwise same, otherwise just into " geo-stationary ".It is known that mixing drum this
The cylindrical container of class, it is adherent during batch mixing is carried out（Side wall）Material be not easy to be stirred（First stir in practice
Structure is difficult to accomplish adherent, because have that the negative effects such as wall, aggravation vibrations are scraped, and accuracy of manufacture requirement is too high；Second stir
When there is centrifugal action, the material that quality is larger in compound, viscosity is higher is easily adherent, so the uniformity of compound still can
It is limited）.Furthermore, easily there is the problems such as above lower leaf and heavy burder are precipitated, also it is unfavorable for ensureing the uniformity of compound.And at this
In scheme, with the hardened structure of arc, arc plate outer surface can fit with stack shell interior sidewall surface, under off working state, arc plate and stack shell
There is surplus between interior sidewall surface, now returning spring is not also stretched.When operating（During stirring）, main motor drive stack shell turn
Dynamic, as stack shell rotating speed is lifted, under the influence of centrifugal force, balancing weight is displaced outwardly distance and becomes big（Now returning spring draws
It is long）, drive arc plate near and be gradually labelled to stack shell interior sidewall surface so that can be by the compound at adherent place to arc plate is upper and lower, both sides
Extrusion, comes back to stack shell center.And to the interior movement again of arc plate, it is only necessary to main motor is stopped, or speed governing（Drop
Speed）, then under the return action of returning spring, arc plate will be moved inward.And in actual whipping process, agitation blades one
Straight agitation, in the presence of agitation blades, internal mix material is displaced outwardly（Towards stack shell side wall）, and main motor can be by some
Secondary acceleration, deceleration, or start several times, stop, after starting or acceleration, arc plate promote the compound at adherent place on arc plate,
Under, both sides extrusion, equivalent to moving from the bottom to top, realizing will turn on a part of bottom compound the compound of extrusion upwards
Effect, solves the problems, such as that lower leaf and heavy burder are precipitated on compound in passing, and the compound extruded to both sides, remaining can be impacted
Adherent compound（When such as arc plate is adherent, the adherent compound in the material passing passage of space Nei Ji sides between adjacent arcs plate allows
Adherent compound is mixed into stack shell center again, re-starts stirring, therefore can ensure that compound has high uniformity.Stirring
After the completion of compound can immediately be input into tapping channel and printing shaping, therefore the quality of final printing material is also ensured.
The beneficial effects of the invention are as follows：It is rational in infrastructure, can be adjusted according to support demand, neatly provide a part of non-
Printing type bottom supports and the collateral support of non-print type, so as to reduce the demand of printing support originally, can improve printing effect, reduce
The risk of product local collapse, saving backing material, and can guarantee that the stability of product in print procedure；Possess coloring mechanism,
The quality of coloring effect and final printing material can be ensured on the premise of pigment is saved, and be avoided that plug；With comprehensive
Batch mixing structure, when being printed using compound, can eliminate the problem of mix layered deposition, make the compound for printing
Uniformly, the quality of final products is high.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is top view of the invention；
Fig. 3 is the present invention one with the structural representation at motion block；
Fig. 4 is a horizontal sectional drawing with motion block of the invention；
Fig. 5 is a kind of structural representation for being molded printing platen in the embodiment of the present invention 1；
Fig. 6 is a kind of top view for being molded printing platen in the embodiment of the present invention 1；
Fig. 7 is the schematic diagram of another shaping printing platen；
Fig. 8 is the schematic diagram of another shaping printing platen；
Fig. 9 is the structural representation discharged in the embodiment of the present invention 1 at printhead；
Figure 10 is the profile discharged in the embodiment of the present invention 1 at printhead；
Figure 11 is the structural representation discharged in the embodiment of the present invention 2 at printhead；
Figure 12 is the structural representation at mixing drum in the embodiment of the present invention 3；
Figure 13 is the enlarged drawing at a pressing plate in Figure 12.
In figure：Mainframe 1, discharging printhead 2, tapping channel 21, printhead stand 22, heat insulation cylinder 23, the coloring of thin material are logical
Road 24, shaping printing platen 3, determine platen 31, move platen 32, the first servo cylinder 33, side supporting platen 3a, edge-on base 3b, the
Two servo cylinder 3c, side connecting seat 3d, adjusting rod 41, band motion block 42, hole 421 living, vertical guide bar 43, driving belt 44, additive color
Endless tube 51, colour tube 52, coloring check valve 521, pigment transfer pipeline 53, hybrid electric motor 61, mixing axle 61a, agitation blades
61b, mixing reductor 61c, stack shell 611, cylinder bottom 612, cylinder top 613, fixed tub 62, main motor 63, main gear reducer 63a, master
Movable belt pulley 63b, annular driven belt wheel 63c, power belt 63d, drainage conduit 64, material receiving tube 65, arc plate 66, sideslip bar 661, pressing plate
662nd, balancing weight 663, returning spring 664, airtight and watertight padding block 665.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and detailed description.
Embodiment 1：In embodiment as shown in Figures 1 to 10, a kind of three-dimensional printer, including mainframe 1, discharging printing
First 2, shaping printing platen 3, is also used for drive discharging printhead movement so as to change the printing of discharging print head position including one
Head displacement governor motion, the discharging printhead is provided with the printhead feed end for being input into printing raw material, and the discharging is beaten
The tapping channel 21 connected with printhead feed end is provided with print head, the shaping printing platen includes determining platen 31, at least one
Individual dynamic platen 32 moving up and down and dynamic platen are corresponded and the platen displacement regulation for driving dynamic platen to move up and down
Mechanism, can also drive side supporting platen to enter shaping printing platen and just go up including at least one side supporting platen 3a, at least one
Collateral support driving structure in square scope, side supporting platen is corresponded with collateral support driving structure.Discharging printhead is used for defeated
Go out to print raw material（Such as molten plastic）To shaping printing platen, printhead displacement governor motion be used for adjust discharging printhead with into
Relative position between type printing platen（All the time down, change is horizontal level and height in discharging printhead discharging direction）.
Shaping printing platen is included determines platen and at least one dynamic platen, and determining platen position will not change, and dynamic platen then can be upper and lower
Regulation.In this way, when starting printing, when certain part needs to print " support ", then the dynamic platen of the part correspondence position can rise,
Such that it is able to save all or part " support " at this needed for script, or when certain part needs to print " support ", then wherein
One side supporting platen can be moved horizontally to the lower section of position corresponding to the part, then be printed again, two kinds of auxiliary branch
Support is combined, and is adapted to the printing of diversified forms, shape, effectively saves time-write interval, " support " raw material, and reduce
After " support ", overall load ability is also improved, help to lift the stabilization of shaped article and total in print procedure
Property.The structure of shaping printing platen can have various change, as illustrated in Fig. 7, Fig. 8, can enter according to the actual requirements
Row design and selection.
The platen displacement governor motion includes the first servo cylinder 33, and the first servo cylinder includes the first cylinder body, first
Piston rod, the scalable direction of First piston bar is vertical, in dynamic platen in correspondence with each other and platen displacement governor motion：First
The dynamic platen lower end of piston rod connection.Whether cylinder/oil cylinder, servo cylinder/servo-cylinder, as long as the height of dynamic platen can be realized
Regulation, it is also possible to from other any conventional governor motions, such as screw body.
The collateral support driving structure includes edge-on base 3b, the second servo cylinder 3c on edge-on base, the second servo
Cylinder includes the second cylinder body, second piston bar, the scalable direction of second piston bar and plane-parallel, in side in correspondence with each other
Supporting platen with it is collateral support driving structure in：Second piston bar is connected with side supporting platen.Edge-on base by side connecting seat 3d with
Mainframe is connected.Whether cylinder/oil cylinder, servo cylinder/servo-cylinder, as long as can realize that the transverse shifting of side supporting platen is adjusted
Section, it is also possible to from other any conventional governor motions, such as screw body.
The shaping printing platen is a plectane, when any second piston bar reaches extreme position, connect this
In the range of the side supporting platen of two piston rods is in directly over shaping printing platen, any second piston bar is retracted to extreme position
When, the side supporting platen for connecting the second piston bar is in outside mainframe.When i.e. piston rod withdraws, the collateral support on the piston rod
Platen have left scope directly over shaping printing platen, will not interfere with printhead, not interfere with normal print.
Vertically and in cylinder, discharging printhead is printed on caster bed frame 22 tapping channel located at one, the printhead
Displacement governor motion is a parallel institution, and parallel institution includes three side chains in parallel, and side chain in parallel includes two adjusting rods 41,
Individual band motion block 42 moving up and down, globular hinge between the band motion block and adjusting rod upper end in same side chain in parallel, each regulation
Globular hinge between bar lower end and printhead stand, three side chains in parallel are uniformly distributed along the circumference of tapping channel.Same parallel connection
In side chain：Two adjusting rods are with reference to mutually symmetrical with setting with band motion block." globular hinge ", also makees " ball-type is hinged ", " ball pivot ",
" globular hinge " fit structure includes the flexural pivot worked in coordination and is hinged ball, and being hinged ball can be directly anchored to structure
On, it is also possible to fixed in structure by bulb fix bar.This programme gives a form for 3-freedom parallel mechanism, leads to
Respectively moving up and down with motion block is crossed, so that the angle of each adjusting rod and height change, to drive printhead stand and go out
Material printhead carries out the movement in horizontal direction and the movement in short transverse（When three band motion blocks are moved up and down together, can
To drive discharging printhead to carry out the movement in short transverse）.Certainly, printhead displacement governor motion is not limited to one kind, at present
In 3D printing field commonly use three-axis reference displacement governor motion, or other be used for drive discharging printhead carry out level shifting
Dynamic and height regulation displacement governor motion, all can be use.
The side chain in parallel also include side chain motor, vertical guide bar 43, transmission mechanism, transmission mechanism include driving wheel, from
Driving wheel, the driving belt 44 for bypassing driving wheel and driven pulley, driving belt head and the tail are closed, in same side chain in parallel：
The rotational power of driving wheel come from side chain motor, band motion block and vertical guide bar between be slidably connected, with motion block can
Vertically, band motion block is provided with determines hole, hole 421 living to glide direction, determines hole, Kong Jun living through the upper and lower surface of band motion block, driving belt
Through hole, hole living is determined, driving belt is fixedly connected between being in the part and band motion block determined in hole.Driving belt is in hole living
Part and band motion block between relative can move up and down.Side chain motor drives driving belt to rotate by driving wheel, and driven pulley rises
To the effect of positioning and cooperation tensioning driving belt.Driving belt can be moved up and down with band motion block, when band motion block is moved up and down,
Relative position is constant all the time between driving belt is in the part and band motion block determined in hole, and driving belt is in the portion in hole living
Divide then has relative movement and band motion block between（It is relative to move up and down）, wherein side chain motor can be servomotor.Same branch in parallel
In chain：The output end of side chain motor connects the input of a side chain reductor, and the output end of side chain reductor is coaxial with driving wheel
Connection.
Also include an additive color endless tube 51, additive color endless tube is enclosed within outside discharging printhead and, additive color endless tube coaxial with tapping channel
Be provided with many colour tube 52, colour tube inlet communication additive color endless tube, colour tube outlet tapping channel, each colour tube is along going out
Material passage is circumferentially uniformly distributed, and the additive color endless tube is switched to pigment cylinder by pigment delivery pump.Pigment delivery pump can select spiral shell
Bar pump, is connected, the import of pigment delivery pump between the outlet of pigment delivery pump and additive color endless tube by a pigment transfer pipeline 53
It is connected by a pigment transfer pipeline between pigment cylinder.Pigment delivery pump by pigment cylinder in pigment（That is dye, coloring
Material）It is transported to additive color endless tube, pigment is input into tapping channel by additive color endless tube by each colour tube, so that can be right in tapping channel
Printing raw material is coloured.The coloring mode, can be without carrying out printing the mediation between raw material and pigment in advance, it is to avoid beats
After print raw material reconciles with pigment, easily in mixed material（With pigment）Occurs deposition layering in storage container（Pigment and printing are former
Material sinks frivolous again）, caused by follow-up printing when mixed material lack of homogeneity problem.And, 3D printing raw material is not necessarily
It is fused raw material（Molten plastic etc.）, or solid bar material（Solid bar material is just heated after tapping channel is entered
Melting）, the coloring mode of this programme can just meet the coloring of such printing raw material.
Embodiment 2：With embodiment 1, its difference is the basic structure and implementation method of the present embodiment：
As shown in Figure 11, the heat insulation cylinder 23 coaxial with tapping channel, heat insulation cylinder upper and lower end are provided with the tapping channel
It is open, heat insulation cylinder is connected by connecting rod with discharging printhead, the conduit wall of heat insulation cylinder lateral wall and tapping channel（Namely go out
Material printhead madial wall）Between form thin material and chrominance channel 24, colour tube outlet towards heat insulation cylinder lateral wall, colour tube exit
It is provided with coloring check valve 521.Coloring check valve can be colour tube to tapping channel by direction, coloring mouth peak be less than every
Hot cylinder peak, coloring mouth minimum point is higher than heat insulation cylinder minimum point.Heat insulation cylinder lower end and the vertical spacing of discharging printhead lower end
For 5 to 15mm.During coloring, at least to ensure final printing material（From printhead to the material of shaping printing platen solidify afterwards sizing）Outward
Surface fully colours（Some pigment are also still allowed for inside final printing material, but it is more few better, and internal pigment content is higher, more shadow
The intensity and overall structure stability of the final printing material of sound, also more take pigment）.Pigment is directly input into the coloring side of tapping channel
Formula, although advantage is a lot, but easily consumes relatively large number of pigment, because, pigment is entering tapping channel, contact
To after the fused raw material of relatively-high temperature, easily it is mixed into fused raw material, if amount of pigment is insufficient, it may appear that final printing material surface
The problem that coloring is incomplete, coloring degree is not enough, and it is abundant in order to ensure final printing material surface coloring, just have to input
Relatively large number of pigment, so, can there is above-mentioned final printing in the pigment that is mixed into inside final printing material or a lot
The intensity of material and the poor deficiency of overall load ability.Furthermore, for the relative printing raw material of pigment, viscosity is big, poor fluidity, easily
Be heated caking, even zoom, and amount of pigment is big in tapping channel（Content ratio is high）When, easily cause the blocking of discharging printhead.
And in this programme, the printing raw material for employing melting in heat-insulated barrel structure, tapping channel is flow at heat insulation cylinder from the top down
Afterwards, inside and outside two parts are temporarily divided into by heat insulation cylinder, heat insulation cylinder house print raw material still possesses of a relatively high temperature, normally from
Flowed down inside heat insulation cylinder, printing raw material in heat insulation cylinder outside is in during thin material chrominance channel, and relative thickness is relatively thin, and can be quick, no
The pigment of input is touched disconnectedly, starts to be sufficiently mixed（Printing raw thickness is thin during thin material chrominance channel, is easily combined with pigment and filled
Point）, and the part printing raw material can lower the temperature（It is preferably controlled in the slightly above temperature values of solidification temperature）, coloring,
Leave thin material and raw material behind chrominance channel with other relatively-high temperatures（The printing raw material flowed down from inside heat insulation cylinder）During contact, outer layer
Material（Pigment adds raw material）In raw material can absorb heat first intensification, be individually heated intensification rather than pigment is allowed（When there is no a heat insulation cylinder just
It is that pigment is individually heated intensification）, an of short duration protective effect is served equivalent to external layer pigment, and in this of short duration guarantor
In the shield time, overall raw material has been moved off discharging printhead and starts to print, solidifies, such that it is able to ensureing that outer layer coloring is abundant,
Color degree is high and stable.Additionally, heat insulation cylinder yet forms both a barrier structure, when pigment enters tapping channel, with certain
Impulsive force（Pigment feeding needs pressure）If directly colouring, pigment is easier to be mixed into inside printing raw material, and has heat-insulated
Cylinder, can ensure that pigment full and uniform in thin material chrominance channel can only scatter, and the printing raw material in chrominance channel to thin material
Coloured, fully saved pigment, it also avoid final printing material inside pigment content too high.Additionally, can be set in heat insulation cylinder
There are heat-insulated cooling airway, heat-insulated cooling airway one end connection cooled exhaust pipe one end, heat-insulated cooling airway other end connection cooling
Air inlet pipe one end, the cooled exhaust pipe other end, the cooling air inlet pipe other end are in outside discharging printhead.Consequently, it is possible to work
During, cooling air inlet pipe input cooling gas can also be given, further the effect of heat insulation of lifting heat insulation cylinder.
Embodiment 3：The basic structure and implementation method of the present embodiment is with embodiment 1 or 2 or 3, its difference：
As shown in Figure 12, Figure 13, the printhead feed end is switched to blending for a mixing drum by a feeding engine
Material end, mixing drum is provided with a charging aperture, also including some material tubes for cylinder charging aperture feed, is provided with material tube molten
Melt heater, mixing discharge end is provided with outlet valve, the mixing axle 61a driven by hybrid electric motor 61, institute are provided with the mixing drum
State mixing axle and be provided with some agitation blades 61b.Hybrid electric motor is mixed located at mixing drum top, the output end connection one of hybrid electric motor
The input of reductor 61c is closed, the output end for mixing reductor is stretched into mixing drum and connection mixing axle.It is straight using fused raw material
In the case of tapping into material, fused raw material is in addition to single material, or compound（Difference material mixing, or material mixes with pigment
Deng）.Each single raw material of solid-state is melted or melted in material tube, and into mixing drum, now mixing axle can just drive agitation blades
It is stirred, lifts the uniformity of compound.
The mixing drum is cylindrical, and mixing drum includes stack shell 611, cylinder bottom 612, cylinder top 613, and cylinder charging aperture is located at cylinder
Top, mixing drum is fixed in tub 62 located at one, and mixing drum is rotated with fixed tub and is connected, and the center of rotation of mixing drum is stack shell axle
Line, also including a main motor 63 for driving stack shell to be rotated around stack shell axis, mixing discharge end is one to be fixed with cylinder bottom
Drainage conduit 64 and the blow-off valve being located in drainage conduit, drainage conduit, mixing drum, mixing axle are coaxial, and feeding engine passes through material receiving tube
65 are connected with drainage conduit, and drainage conduit is rotated with material receiving tube and is connected, and material receiving tube is fixed in fixed tub, and at least four are provided with stack shell
Block arc plate 66, arc plate outer surface can fit with stack shell interior sidewall surface, and each arc plate is uniformly distributed along the circumference of mixing axle, adjacent arcs
Space between plate is side material passing passage, and arc plate is provided with some sideslip bars 661, and sideslip bar passes through stack shell side wall and and stack shell
Side walls are connected, and sideslip bar outer end is in outside stack shell, and sideslip bar outer end is provided with pressing plate 662, and pressing plate is provided with balancing weight 663,
Some returning springs 664, returning spring one end connection pressing plate, returning spring other end connection stack shell are provided between pressing plate and stack shell
Outer side surface.Feeding engine can select screw pump, and feeding pump inlet is connected to drainage conduit one end, the drainage conduit other end by material receiving tube
It is enclosed within outside material receiving tube and is rotated with material receiving tube and be connected, feeding pump discharge is switched to printhead and feeds by printhead feeding pipe
End.Discharge sealing ring is provided between drainage conduit and material receiving tube.So as to height can be ensured when drainage conduit and material receiving tube are relatively rotated
The sealing of degree.The output end of main motor connects the input of a main gear reducer 63a, and the output end of main gear reducer is provided with one actively
Belt wheel 63b, is fixed with the annular driven belt wheel 63c coaxial with stack shell, a power belt for head and the tail closure on stack shell lateral wall
63d bypasses driving pulley and annular driven belt wheel, power belt tensioning.Described hybrid electric motor is consolidated by support with fixed tub
It is fixed.Described stack shell is provided with some airtight and watertight padding blocks 665, and described airtight and watertight padding block is corresponded with sideslip bar, described
Cooperation is slidingly sealed between airtight and watertight padding block and corresponding sideslip bar.It is common sealing fit form to be slidingly sealed cooperation, such as
It is exactly to be slidingly sealed cooperation between oil cylinder piston and cylinder wall.
Fixed tub is maintained static, and stack shell can be rotated（Main motor passes through main gear reducer, driving pulley, power belt, ring
Shape driven pulley drives stack shell rotation）, mixing axle can also rotate, certainly, in practical operation, preferably allow stack shell and mixing axle
Reversely rotate, if rotating Vortex, velocity of rotation however it is same, otherwise just into " geo-stationary ".It is known that mixing drum this
The cylindrical container of one class, it is adherent during batch mixing is carried out（Side wall）Material be not easy to be stirred（First stir in practice
Structure is mixed to be difficult to accomplish adherent, because have that the negative effects such as wall, aggravation vibrations are scraped, and accuracy of manufacture requirement is too high；Second stir
There is centrifugal action, the material that quality is larger in compound, viscosity is higher is easily adherent when mixing, so the uniformity of compound is still
Can be limited）.Furthermore, easily there is the problems such as above lower leaf and heavy burder are precipitated, also it is unfavorable for ensureing the uniformity of compound.And
In this programme, with the hardened structure of arc, arc plate outer surface can fit with stack shell interior sidewall surface, under off working state, arc plate and cylinder
There is surplus between body interior sidewall surface, now returning spring is not also stretched.When operating（During stirring）, main motor drive stack shell turn
Dynamic, as stack shell rotating speed is lifted, under the influence of centrifugal force, balancing weight is displaced outwardly distance and becomes big（Now returning spring draws
It is long）, drive arc plate near and be gradually labelled to stack shell interior sidewall surface so that can be by the compound at adherent place to arc plate is upper and lower, both sides
Extrusion, comes back to stack shell center.And to the interior movement again of arc plate, it is only necessary to main motor is stopped, or speed governing（Drop
Speed）, then under the return action of returning spring, arc plate will be moved inward.And in actual whipping process, agitation blades one
Straight agitation, in the presence of agitation blades, internal mix material is displaced outwardly（Towards stack shell side wall）, and main motor can be by some
Secondary acceleration, deceleration, or start several times, stop, after starting or acceleration, arc plate promote the compound at adherent place on arc plate,
Under, both sides extrusion, equivalent to moving from the bottom to top, realizing will turn on a part of bottom compound the compound of extrusion upwards
Effect, solves the problems, such as that lower leaf and heavy burder are precipitated on compound in passing, and the compound extruded to both sides, remaining can be impacted
Adherent compound（When such as arc plate is adherent, the adherent compound in the material passing passage of space Nei Ji sides between adjacent arcs plate allows
Adherent compound is mixed into stack shell center again, re-starts stirring, therefore can ensure that compound has high uniformity.Stirring
After the completion of compound can immediately be input into tapping channel and printing shaping, therefore the quality of final printing material is also ensured.
Claims (7)
1. a kind of three-dimensional printer, including mainframe, discharging printhead, shaping printing platen, are also used for drive and discharge including one
Printhead is moved so as to change the printhead displacement governor motion of discharging print head position, it is characterized in that, the discharging printhead
The printhead feed end for being input into printing raw material is provided with, is provided with what is connected with printhead feed end in the discharging printhead
Tapping channel, shaping printing platen includes determining a pair of platen, at least one dynamic platen moving up and down and dynamic platen 1
Answer and the platen displacement governor motion for driving dynamic platen to move up and down, also including at least one side supporting platen, at least one
The individual collateral support driving structure for driving side supporting platen to enter in the range of directly over shaping printing platen, side supporting platen and side
Supporting drive structure is corresponded,
The tapping channel vertically and in cylinder, on a printing caster bed frame, adjust discharging printhead by the printhead displacement
Section mechanism is a parallel institution, and parallel institution includes three side chains in parallel, side chain in parallel include two adjusting rods, one can be upper and lower
Mobile band motion block, globular hinge between the band motion block and adjusting rod upper end in same side chain in parallel, each adjusting rod lower end with beat
Globular hinge between print caster bed frame, three side chains in parallel are uniformly distributed along the circumference of tapping channel；
The side chain in parallel also include side chain motor, vertical guide bar, transmission mechanism, transmission mechanism include driving wheel, driven pulley, around
The driving belt of driving wheel and driven pulley is crossed, driving belt head and the tail are closed, in same side chain in parallel：The rotational power of driving wheel comes
It is slidably connected between side chain motor, band motion block and vertical guide bar, vertically, band motion block is provided with fixed to the slidably direction with motion block
Hole, hole living, determine hole, Kong Jun living through the upper and lower surface of band motion block, and through hole, hole living is determined, driving belt is in determines hole to driving belt
In part and band motion block between be fixedly connected；
The heat insulation cylinder coaxial with tapping channel is provided with the tapping channel, heat insulation cylinder upper and lower end is open, heat insulation cylinder is by connecting
Extension bar is connected with discharging printhead, thin material is formed between heat insulation cylinder lateral wall and the conduit wall of tapping channel and chrominance channel, colours
Pipe is exported towards heat insulation cylinder lateral wall, colour tube exit and is provided with coloring check valve.
2. a kind of three-dimensional printer according to claim 1, it is characterized in that, the platen displacement governor motion includes first
Servo cylinder, the first servo cylinder includes the first cylinder body, First piston bar, and the scalable direction of First piston bar is vertical, mutual
In corresponding dynamic platen and platen displacement governor motion：The dynamic platen lower end of First piston bar connection.
3. a kind of three-dimensional printer according to claim 1, it is characterized in that, the collateral support driving structure includes edge-on
Base, the second servo cylinder on edge-on base, the second servo cylinder include the second cylinder body, second piston bar, second piston bar
Scalable direction and plane-parallel, side supporting platen in correspondence with each other with it is collateral support driving structure in：Second piston bar
It is connected with side supporting platen.
4. a kind of three-dimensional printer according to claim 3, it is characterized in that, the shaping printing platen is a plectane, institute
When stating second piston bar and reaching extreme position, the side supporting platen for connecting the second piston bar is in shaping printing platen and just goes up
In square scope, when second piston bar is retracted to extreme position, the side supporting platen for connecting the second piston bar is in outside mainframe.
5. a kind of three-dimensional printer according to claim 1 and 2, it is characterized in that, also including an additive color endless tube, additive color endless tube
Be enclosed within discharging printhead outer and coaxial with tapping channel, additive color endless tube be provided with many colour tube, colour tube inlet communication additive color
Endless tube, colour tube outlet tapping channel, and each colour tube is circumferentially uniformly distributed along tapping channel, and the additive color endless tube passes through face
Material conveying pump is switched to pigment cylinder.
6. a kind of three-dimensional printer according to claim 1 and 2, it is characterized in that, the printhead feed end send by one
Material pump is switched to the mixing discharge end of a mixing drum, and mixing drum is provided with a charging aperture, also including some for cylinder charging aperture
The material tube of feed, is provided with melting heater in material tube, mixing discharge end is provided with outlet valve, is provided with by mixing in the mixing drum
The mixing axle that motor drives is closed, the mixing axle is provided with some agitation blades.
7. a kind of three-dimensional printer according to claim 6, it is characterized in that, the mixing drum is cylindrical, mixing drum bag
Stack shell, cylinder bottom, cylinder top are included, cylinder charging aperture is fixed in tub located at cylinder top, mixing drum located at one, and mixing drum is rotated with fixed tub
Connection, the center of rotation of mixing drum is stack shell axis, also including a main motor for driving stack shell to be rotated around stack shell axis, is mixed
It is a drainage conduit fixed with cylinder bottom and the blow-off valve being located in drainage conduit, drainage conduit, mixing drum, mixing axle to close discharge end
Coaxial, feeding engine is connected by material receiving tube with drainage conduit, and drainage conduit is rotated with material receiving tube and is connected, and material receiving tube is fixed on fixed cylinder
At least four blocks arc plates are provided with frame, in stack shell, arc plate outer surface can fit with stack shell interior sidewall surface, each arc plate is along mixing axle
Circumferentially it is uniformly distributed, the space between adjacent arcs plate is side material passing passage, arc plate is provided with some sideslip bars, and sideslip bar is passed through
Stack shell side wall and it is connected with stack shell side walls, sideslip bar outer end is in outside stack shell, and sideslip bar outer end is provided with pressing plate, is set on pressing plate
There is balancing weight, some returning springs are provided between pressing plate and stack shell, returning spring one end connection pressing plate, the returning spring other end connects
Connect stack shell outer side surface.
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| CN106073789B (en) * | 2016-08-10 | 2019-03-29 | 吉林大学 | A kind of 3D printing orthopaedics extremity scans sampler |
| CN107415217B (en) * | 2017-04-28 | 2019-07-23 | 西安理工大学 | A kind of design method of the indeterminate fixed end roof beam structure with self supporting structure |
| CN109118066A (en) * | 2018-07-20 | 2019-01-01 | 广州市标准化研究院 | A kind of index number system model building method |
| CN109049702B (en) * | 2018-08-02 | 2021-09-10 | 西安理工大学 | 3D printing system based on 6-PSS parallel mechanism |
| CN112223749B (en) * | 2020-09-09 | 2022-07-29 | 北京联袂义齿技术有限公司 | 3D printing method for personalized denture |
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| US6175422B1 (en) * | 1991-01-31 | 2001-01-16 | Texas Instruments Incorporated | Method and apparatus for the computer-controlled manufacture of three-dimensional objects from computer data |
| CN103317726A (en) * | 2013-06-19 | 2013-09-25 | 广州捷和电子科技有限公司 | Nozzle transmission mechanism for 3D printer and 3D printer with same |
| CN103434135B (en) * | 2013-08-01 | 2016-03-02 | 甘春丽 | A kind of colored 3D printer and prepare the method for three-dimensional article |
| DE102013223514A1 (en) * | 2013-11-19 | 2015-06-03 | Hochschule für angewandte Wissenschaften München | Method and device for generating a three-dimensional object |
| CN104552944B (en) * | 2014-12-19 | 2017-03-01 | 机械科学研究总院先进制造技术研究中心 | A kind of 3D printing dispensing extrusion device that can achieve online alloying |
| CN205202207U (en) * | 2015-12-15 | 2016-05-04 | 杭州缤果信息科技有限公司 | Three -dimensional printer |
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Effective date of registration: 20170705 Address after: 361000, Fujian, Xiamen Province, Huli Avenue, No. four, on the east side of building 52 Patentee after: OPOS (XIAMEN) ELECTRONIC TECHNOLOGY CO.,LTD. Address before: 310018 Yifu technology building, China Jiliang University, modern science and Technology Institute, 168, Xiasha School Street, Xiasha, Hangzhou, Zhejiang, Jianggan District 1103, China Patentee before: HANGZHOU BINGUO INFORMATION TECHNOLOGY Co.,Ltd. |
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Denomination of invention: A 3D printer Effective date of registration: 20201016 Granted publication date: 20170531 Pledgee: Xiamen Jinyuan Financing Guarantee Co.,Ltd. Pledgor: OPOS (XIAMEN) ELECTRONIC TECHNOLOGY Co.,Ltd. Registration number: Y2020980006852 |
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Date of cancellation: 20231008 Granted publication date: 20170531 Pledgee: Xiamen Jinyuan Financing Guarantee Co.,Ltd. Pledgor: OPOS (XIAMEN) ELECTRONIC TECHNOLOGY CO.,LTD. Registration number: Y2020980006852 |