CN105415683B - A kind of 3 D-printing equipment - Google Patents

A kind of 3 D-printing equipment Download PDF

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Publication number
CN105415683B
CN105415683B CN201510940791.0A CN201510940791A CN105415683B CN 105415683 B CN105415683 B CN 105415683B CN 201510940791 A CN201510940791 A CN 201510940791A CN 105415683 B CN105415683 B CN 105415683B
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China
Prior art keywords
cylinder
printhead
printing
platen
stack shell
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CN105415683A (en
Inventor
王正波
许启明
王舒文
陈智浩
唐乔
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Huzhou shuozhong Precision Intelligent Manufacturing Co., Ltd
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Hangzhou Binguo Information Technology Co Ltd
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Abstract

The invention discloses a kind of 3 D-printing equipment, including mainframe, discharge printhead, it is in the shaping printing platen in mainframe, also including one is used to drive the movement of discharging printhead to change the printhead displacement governor motion of discharging print head position, the discharging printhead is provided with the printhead feed end for being used for inputting printing raw material, provided with the tapping channel connected with printhead feed end in the discharging printhead, below the shaping printing platen cylinder is adjusted provided with platen, platen regulation cylinder includes cylinder body, the piston being slidably matched with cylinder body, the piston rod being connected with piston, the piston rod of platen regulation cylinder is upper, cylinder body is under, the piston rod of platen regulation cylinder is vertical and the connection of piston rod upper end is molded stamp pad plate bottom surface.The beneficial effects of the invention are as follows:Rational in infrastructure, the regulation free degree is big, is adjusted while effectively realizing discharging printhead relative altitude and position, comprehensive adjustment speed and printing effect can be obviously improved.

Description

A kind of 3 D-printing equipment
Technical field
The invention belongs to 3D printing technique field, more particularly to a kind of 3 D-printing equipment.
Background technology
3D printer is also known as three-dimensional printer (3DP), is a kind of machine using 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 printed can fall prints platen in shaping The diverse location of top, to realize that product is three-dimensionally shaped).It is layering printing during 3D printing equipment printed product, has beaten one layer, The distance that discharging printhead brings Forward, then in translational adjustment position, is then printed, consequently, it is possible to wait discharging again The time that printhead first moves up, translate again will be longer, causes print speed to be limited.
The content of the invention
It is an object of the invention to overcome the defect of prior art, and provide a kind of rational in infrastructure, adjust the free degree greatly, can have Effect is adjusted while realizing discharging printhead relative altitude and position, and comprehensive adjustment speed and printing effect can be obviously improved 3 D-printing equipment.
To achieve these goals, the present invention uses following technical scheme:
A kind of 3 D-printing equipment, including mainframe, the printhead that discharges, be in mainframe shaping printing platen, also Including one be used for drive discharging printhead movement so as to change discharging print head position printhead displacement governor motion, it is described go out Expect that printhead is provided with to be provided with the printhead feed end for being used for inputting printing raw material, the discharging printhead to feed with printhead The tapping channel of connection is held, the shaping printing platen lower section adjusts cylinder provided with platen, and platen regulation cylinder includes cylinder body and cylinder body The piston being slidably matched, the piston rod being connected with piston, the piston rod of platen regulation cylinder is in upper, cylinder body under, and platen adjusts cylinder Piston rod is vertical and piston rod upper end connection shaping stamp pad plate bottom surface.3D(It is three-dimensional)Printing is layering printing, and common 3D is beaten During print, one layer is beaten, the distance that discharging printhead brings Forward then in translational adjustment position, is then printed, we again In case, as long as in need, discharging printhead can direct translational adjustment position, and the script printhead that discharges brings Forward distance Action is moved down by shaping printing platen(Platen regulation cylinder piston rod shrinks)One layer of distance is substituted, so as to effectively improve discharging Printhead and the speed of shaping printing platen relative position regulation, can significant increase printing effect.
Preferably, the tapping channel is vertical 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 Globular hinge between band motion block and adjusting rod upper end in bar, a band motion block moving up and down, same side chain in parallel, it is 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 the form of a 3-freedom parallel mechanism, passes through 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 Glide direction is vertical, and band motion block determines hole, Kong Jun living and run through the upper and lower surface of band motion block, driving belt is worn provided with hole, hole living is determined Cross and determine hole, hole living, driving belt be in determine part in hole with being fixedly connected between motion block.Side chain motor passes through driving wheel band Dynamic driving belt is rotated, and driven pulley plays a part of positioning and coordinates tensioning driving belt.Driving belt can be with band motion block Lower movement, band motion block is when moving up and down, and driving belt, which is in, determines part in hole and constant all the time with relative position between motion block, And part that driving belt is in hole living and with then there is relative movement between motion block.
Preferably, the platen regulation cylinder is servo cylinder/servo-cylinder.The mobile accuracy of servoBcylinder is high, more applicable In the occasion of 3 D-printing, other regulation cylinders can also be used.
Preferably, also include an additive color endless tube, it is outer and coaxial with tapping channel that additive color endless tube is enclosed on discharging printhead, plus Colour circle pipe 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, additive color endless tube is inputted out pigment by each colour tube Passage is expected, so as to be coloured in tapping channel to printing raw material.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.Moreover, 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 provided with coloring check valve.During coloring, at least Ensure final printing material(From printhead to the material of shaping stamp pad solidify afterwards sizing)Outer surface is fully coloured(Final printing material Inside also still allows for some pigment, but more few better, and internal pigment content is higher, more influences the intensity and entirety of final printing material Structural stability, also more takes pigment).Pigment is directly inputted to the coloring mode of tapping channel, although advantage is a lot, but held The relatively large number of pigment of easy consumption because, pigment enter tapping channel, touch the fused raw material of relatively-high temperature after, Easily it is mixed into fused raw material, if amount of pigment is insufficient, it may appear that final printing material surface coloring is not exclusively, coloring degree is not enough The problem of, and in order to ensure that final printing material surface coloring is abundant, just have to input relatively large number of pigment, such one Come, the pigment that is mixed into inside final printing material or many can have the intensity and overall load energy of above-mentioned final printing material The poor deficiency of power.Furthermore, for the relative printing raw material of pigment, sticky big, poor fluidity, easily heated caking, even zoom go out Expect that amount of pigment is big in passage(Content ratio is high)When, easily cause the blocking of discharging printhead.And in this programme, employ every After the printing raw material of melting is flow at heat insulation cylinder from the top down in hot barrel structure, tapping channel, temporarily it is divided into interior by heat insulation cylinder Outer two parts, heat insulation cylinder house print raw material still possesses of a relatively high temperature, is normally flowed down inside heat insulation cylinder, heat insulation cylinder Outside printing raw material is in thin material and in chrominance channel, and relative thickness is relatively thin, and meeting is quick, constantly touch the pigment of input, Start to be sufficiently mixed(Thin material in chrominance channel print raw thickness it is thin, easily combined fully with pigment), and part printing is former Material can cool(It is preferably controlled in the slightly above temperature values of solidification temperature), colouring, leave thin material behind chrominance channel with The raw material of other relatively-high temperatures(The printing raw material flowed down inside heat insulation cylinder)During contact, outer layered material(Pigment adds raw material)In original Expect heat absorption to heat up first, rather than allow pigment to be individually heated and heat up(It is exactly pigment individually heated heating during heat insulation cylinder not have), An of short duration protective effect is served equivalent to external layer pigment, and in this of short duration guard time, overall raw material is Start to print, solidify through leaving discharging printhead, so as to ensure outer layer coloring fully, coloring degree it is high and stably.In addition, Heat insulation cylinder yet forms both a barrier structure, when pigment enters tapping channel, with certain impulsive force(Pigment feeding is desirable Pressure)If directly colouring, pigment is easier to be mixed into inside printing raw material, and has heat insulation cylinder, can ensure that pigment only can be Thin material it is full and uniform in chrominance channel scatter, and the printing raw material to thin material in chrominance channel is coloured, and fully saves face Material, it also avoid pigment content inside final printing material 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 cylinder charging aperture, in addition to some material tubes for being used to be fed to cylinder charging aperture, material tube provided with melting heater, Mix discharge end to be provided with provided with the mixing axle driven by hybrid electric motor in outlet valve, the mixing drum, 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 are mixed 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, in addition to one be used to drive the main motor that stack shell rotate around stack shell axis, mixing discharge end is the row of one and the fixation of cylinder bottom Expects pipe 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 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, provided with least four pieces arcs in stack shell Plate, arc plate outer surface can be fitted with stack shell interior sidewall surface, and circumference of each arc plate along mixing axle is uniformly distributed, between adjacent arcs plate Space be side material passing passage, arc plate be 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 Provided with some returning springs, returning spring one end connection pressing plate, returning spring other end connection stack shell outer side surface.Fixed tub Fixed, stack shell can be rotated, and 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, and the negative effects such as wall, aggravation vibrations are scraped because having, and the accuracy of manufacture requires too high;Second stir When have in centrifugal action, compound the material that quality is larger, viscosity is higher 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, be also 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 is drawn It is long), drive arc plate close to and be gradually labelled to stack shell interior sidewall surface, so as to 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 In the presence of straight agitation, agitation blades, internal mix material is displaced outwardly(Towards stack shell side wall), and main motor can pass through 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 extrusions, the compound extruded upwards moves equivalent to from the bottom to top, and realizing will turn on a part of bottom compound Effect, solves the problem of lower leaf and heavy burder are precipitated on compound in passing, and the compound extruded to both sides, can impact remaining 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 input tapping channel and printing shaping immediately, therefore the quality of final printing material is also ensured.
A kind of 3 D-printing equipment, including discharging printhead, shaping printing platen, the discharging printhead, which is provided with, to be used for Provided with the tapping channel connected with printhead feed end in the printhead feed end of input printing raw material, the discharging printhead, Provided with some magnet coils, the controller being connected with magnet coil in the shaping printing platen, set on the discharging printhead There is electromagnet.Magnet coil number is 4 to 12, and each magnet coil is evenly distributed in shaping printing platen.In small sized product Print application in, can using magnetic suspension control discharging print head position by the way of, discharging printhead with shaping printing platen Relative distance increase can realize that and the change of horizontal relative position then can be several by weakening by increasing electromagnetic repulsion force The electric current of individual magnet coil, increases the electric current of another several magnet coils to realize.Many structures such as mainframe so are eliminated, are saved Cost-saving and space occupancy rate is low, regulation efficiency also gets a promotion.
Preferably, adjusting cylinder provided with platen below the shaping printing platen, platen regulation cylinder includes cylinder body and cylinder body The piston being slidably matched, the piston rod being connected with piston, the piston rod of platen regulation cylinder is in upper, cylinder body under, and platen adjusts cylinder Piston rod is vertical and piston rod upper end connection shaping stamp pad plate bottom surface.
The beneficial effects of the invention are as follows:Rational in infrastructure, the regulation free degree is big, can effectively realize discharging printhead relative altitude And adjusted while position, comprehensive adjustment speed and printing effect can be obviously improved;Possess coloring mechanism, face can saved The quality of coloring effect and final printing material is ensured on the premise of material, and is avoided that plug;With comprehensive batch mixing structure, When being printed using compound, the problem of eliminating mix layered, deposition makes the compound that prints uniform, final production The quality of product is high.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention;
Fig. 2 is the top view of the present invention;
Fig. 3 is the present invention one with the structural representation at motion block;
Fig. 4 is a horizontal sectional drawing of the invention with motion block;
Fig. 5 is the structural representation at discharging printhead in the embodiment of the present invention 1;
Fig. 6 is a profile at discharging printhead in the embodiment of the present invention 1;
Fig. 7 is the structural representation at discharging printhead in the embodiment of the present invention 2;
Fig. 8 is the structural representation at mixing drum in the embodiment of the present invention 3;
Fig. 9 is the enlarged drawing at a pressing plate in Fig. 8;
Figure 10 is the structural representation of the embodiment of the present invention 4.
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, platen regulation cylinder 31, adjusting rod 41, band motion block 42, hole 421 living, vertical guide bar 43, driving belt 44th, additive color endless tube 51, colour tube 52, coloring check valve 521, pigment transfer pipeline 53, mixing drum 6, 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, master Reductor 63a, driving pulley 63b, annular driven belt wheel 63c, power belt 63d, drainage conduit 64, material receiving tube 65, arc plate 66, horizontal stroke Slide bar 661, pressing plate 662, balancing weight 663, returning spring 664, airtight and watertight padding block 665.
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 6, a kind of 3 D-printing equipment, including mainframe 1, discharging are beaten Print first 2, the shaping being in mainframe print platen 3, in addition to one is used to drive discharging printhead movement so as to change discharging The printhead displacement governor motion of print head position, the discharging printhead is provided with the printhead for being used to input printing raw material and entered Expect that, provided with the tapping channel 21 connected with printhead feed end in end, the discharging printhead, the shaping is printed below platen Cylinder 31 is adjusted provided with platen, platen regulation cylinder includes cylinder body, the piston being slidably matched with cylinder body, the piston rod being connected with piston, The piston rod of platen regulation cylinder is in upper, cylinder body under, and the piston rod of platen regulation cylinder is vertical and the connection shaping of piston rod upper end is beaten Ink pad plate bottom surface.3D(It is three-dimensional)Printing is layering printing, during common 3D printing, has beaten one layer, discharging printhead brings Forward Distance, then in translational adjustment position, is then printed again, in this programme, as long as in need, and discharging printhead can be direct Translational adjustment position, and originally discharge printhead bring Forward distance action by shaping printing platen move down(Platen adjusts cylinder Piston rod shrinks)One layer of distance is substituted, and is adjusted so as to effectively improve discharging printhead with shaping printing platen relative position Speed, can significant increase printing effect.
The tapping channel is vertical and in cylinder, and discharging printhead is on a printing caster bed frame 22, 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, one Globular hinge between band motion block and adjusting rod upper end in individual band motion block 42 moving up and down, 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 set using band motion block as with reference to mutually symmetrical with." 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 structure can be directly anchored to by being hinged ball On, it can also be fixed on by bulb fix bar in structure.This programme gives the form of a 3-freedom parallel mechanism, leads to Each 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 Expect that printhead carries out the movement in horizontal direction and the movement in short transverse(, can when three band motion blocks are moved up and down together 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 The three-axis reference displacement governor motion commonly used in 3D printing field, or other drive discharging printheads that are used for carry out level shifting Dynamic and height regulation displacement governor motion, can all be used.
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 Glide direction is vertical, and band motion block determines hole, Kong Jun living and run through the upper and lower surface of band motion block, driving belt provided with hole, hole 421 living is determined Through determining hole, hole living, driving belt be in determine part in hole with being fixedly connected between motion block.Driving belt is in hole living Part and with relative being moved up and down between motion block.Side chain motor drives driving belt to rotate by driving wheel, and driven pulley rises To positioning and the effect of 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, Driving belt, which is in, determines part in hole and constant all the time with relative position between motion block, and driving belt is in the portion in hole living Point and with then there is relative movement between motion block(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 and driving wheel of side chain reductor are coaxial Connection.
The platen regulation cylinder is servo cylinder/servo-cylinder.The mobile accuracy of servoBcylinder is high, is more suitable for 3 D-printing Occasion, other regulation cylinders can also be used.
Also include an additive color endless tube 51, additive color endless tube is enclosed on outside discharging printhead and, additive color endless tube coaxial with tapping channel 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 between pigment cylinder by a pigment transfer pipeline.Pigment delivery pump by pigment cylinder in pigment(That is dye, coloring Material)It is transported to additive color endless tube, pigment is inputted tapping channel by additive color endless tube by each colour tube, so as to 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 Print after raw material and pigment mediation, 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 the problem of.Moreover, 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:The basic structure and embodiment be the same as Example 1 of the present embodiment, its difference are:
As shown in Figure 7, 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 Expect printhead madial wall)Between form thin material and chrominance channel 24, colour tube outlet towards heat insulation cylinder lateral wall, colour tube exit Provided with coloring check valve 521.Coloring check valve can be colour tube by direction to tapping channel, coloring mouth peak be less than every Hot cylinder peak, coloring mouth minimum point is higher than heat insulation cylinder minimum point.The vertical spacing of heat insulation cylinder lower end and discharging printhead lower end For 5 to 15mm.During coloring, at least to ensure final printing material(From printhead to the material of shaping stamp pad solidify afterwards sizing)Appearance Face is fully coloured(Some pigment are also still allowed for inside final printing material, but it is more few better, and internal pigment content is higher, more influences The intensity and overall structure stability of final printing material, also more take pigment).Pigment is directly inputted to 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 of coloring is not exclusively, coloring degree is not enough, and in order to ensure that final printing material surface coloring is abundant, just have to input Relatively large number of pigment, so, the pigment that is mixed into inside final printing material or many can have above-mentioned final printing 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 Amount of pigment is big in heated caking, even zoom, 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 is in thin material and in chrominance channel outside heat insulation cylinder, and relative thickness is relatively thin, and can quickly, no The pigment of input is touched disconnectedly, starts to be sufficiently mixed(Thin material in chrominance channel print raw thickness it is thin, easily combined and filled with pigment Point), and the part printing raw material can cool(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 inside heat insulation cylinder)During contact, outer layer Material(Pigment adds raw material)In raw material can absorb heat first heating, rather than allow pigment to be individually heated heating(When there is no a heat insulation cylinder just It is pigment individually heated heating), 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, so as to ensure that outer layer coloring is abundant, Color degree is high and stably.In addition, 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 save pigment, it also avoid pigment content inside final printing material too high.In addition, 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 embodiment be the same as Example 1 or 2 of the present embodiment, its difference are:
As shown in Fig. 8, Fig. 9, the mixing that the printhead feed end is switched to a mixing drum 6 by a feeding engine discharges End, mixing drum is provided with cylinder charging aperture, in addition to some material tubes for being used to be fed to cylinder charging aperture, material tube provided with melting Heater, mixing discharge end is provided with outlet valve, and the mixing axle 61a driven by hybrid electric motor 61 is provided with the mixing drum, described Mix axle and be provided with some agitation blades 61b.Hybrid electric motor is above mixing drum, and the output end connection one of hybrid electric motor is mixed Reductor 61c input, the output end of mixing reductor is stretched into mixing drum and connection mixing axle.It is direct using fused raw material In the case of charging, fused raw material is in addition to single material or compound(Difference material mixing, or material are mixed with pigment Deng).Each single raw material of solid-state is melted or melted in material tube, into mixing drum, now mixes axle with regard to that can 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, in addition to one be used to drive the main motor 63 that stack shell rotate around stack shell axis, mixing discharge end is one and the fixation of 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 be fitted with stack shell interior sidewall surface, and circumference of each arc plate along mixing axle is uniformly distributed, 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 on outside material receiving tube and is rotated with material receiving tube and is connected, feeding pump discharge is switched to printhead by printhead feeding pipe and fed End.Discharge sealing ring is provided between drainage conduit and material receiving tube.So as to which 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 an active The annular driven belt wheel 63c coaxial with stack shell, the power belt of a head and the tail closure are fixed with belt wheel 63b, 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 fixed, 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 It is difficult to accomplish adherent to mix structure, and the negative effects such as wall, aggravation vibrations are scraped because having, and the accuracy of manufacture requires too high;Second stir Have in centrifugal action, compound the material that quality is larger, viscosity is higher easily adherent when mixing, so the uniformity of compound is still It can be limited).Furthermore, easily there is the problems such as above lower leaf and heavy burder are precipitated, be also 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 is drawn It is long), drive arc plate close to and be gradually labelled to stack shell interior sidewall surface, so as to 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 In the presence of straight agitation, agitation blades, internal mix material is displaced outwardly(Towards stack shell side wall), and main motor can pass through 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 extrusions, the compound extruded upwards moves equivalent to from the bottom to top, and realizing will turn on a part of bottom compound Effect, solves the problem of lower leaf and heavy burder are precipitated on compound in passing, and the compound extruded to both sides, can impact remaining 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 input tapping channel and printing shaping immediately, therefore the quality of final printing material is also ensured.
Embodiment 4:In embodiment as shown in Figure 10, a kind of 3 D-printing equipment, including discharging printhead, shaping printing Platen, the discharging printhead is provided with the printhead feed end for being used for inputting printing raw material, the discharging printhead and is provided with Connect in the tapping channel connected with printhead feed end, the shaping printing platen provided with some magnet coils, with magnet coil The controller connect, the discharging printhead is provided with electromagnet.Magnet coil number is 4 to 12, and each magnet coil uniformly divides Cloth is in shaping printing platen.
Cylinder is adjusted provided with platen below the shaping printing platen, platen regulation cylinder includes cylinder body, is slidably matched with cylinder body Piston, the piston rod that is connected with piston, the piston rod of platen regulation cylinder is in upper, cylinder body under, and platen adjusts the piston rod of cylinder Vertical and piston rod upper end connection shaping stamp pad plate bottom surface.The platen regulation cylinder is servo cylinder/servo-cylinder.
, can be by the way of magnetic suspension control discharging print head position in the print application of small sized product, discharging is beaten The relative distance increase of print head and shaping printing platen can be realized by increasing electromagnetic repulsion force, and the change of horizontal relative position Changing then can be by weakening the electric currents of several magnet coils, and the electric currents of the another several magnet coils of increase is realized.So eliminate Many structures such as mainframe, save cost and space occupancy rate are low, and regulation efficiency also gets a promotion.

Claims (6)

1. a kind of 3 D-printing equipment, including mainframe, the printhead that discharges, the shaping printing platen that is in mainframe, also wrap Include one be used for drive discharging printhead movement so as to change discharge print head position printhead displacement governor motion, its feature That the discharging printhead is provided with the printhead feed end for being used for inputting printing raw material, be provided with the discharging printhead with Cylinder is adjusted provided with platen below the tapping channel of printhead feed end connection, the shaping printing platen, platen regulation cylinder includes Cylinder body, the piston being slidably matched with cylinder body, the piston rod being connected with piston, platen regulation cylinder piston rod in upper, cylinder body under, The piston rod of platen regulation cylinder is vertical and the connection of piston rod upper end is molded stamp pad plate bottom surface, in addition to an additive color endless tube, additive color It is outer and coaxial with tapping channel that endless tube is enclosed on discharging printhead, 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 leads to Cross pigment delivery pump to be switched in pigment cylinder, the tapping channel provided with the heat insulation cylinder coaxial with tapping channel, heat insulation cylinder is upper and lower End is open, and heat insulation cylinder is connected by connecting rod with discharging printhead, between heat insulation cylinder lateral wall and the conduit wall of tapping channel Form thin material and chrominance channel, colour tube outlet towards heat insulation cylinder lateral wall, colour tube exit provided with coloring check valve.
2. a kind of 3 D-printing equipment according to claim 1, it is characterized in that, the tapping channel is vertical and in cylinder Shape, discharging printhead is on a printing caster bed frame, and the printhead displacement governor motion is a parallel institution, parallel institution bag Three side chains in parallel are included, side chain in parallel is included in two adjusting rods, a band motion blocks moving up and down, same side chain in parallel Globular hinge, globular hinge between each adjusting rod lower end and printhead stand, three parallel connections between band motion block and adjusting rod upper end Side chain is uniformly distributed along the circumference of tapping channel.
3. a kind of 3 D-printing equipment according to claim 2, it is characterized in that, the side chain in parallel also includes side chain electricity Machine, vertical guide bar, transmission mechanism, transmission mechanism include driving wheel, driven pulley, bypass the driving belt of 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 comes from side chain motor, is slidably connected between band motion block and vertical guide bar, with motion block slidably Direction is vertical, and band motion block, which is provided with, determines hole, hole living, determines hole, Kong Jun living and runs through the upper and lower surface of band motion block, driving belt passes through fixed Hole, hole living, driving belt be in determine part in hole with being fixedly connected between motion block.
4. a kind of 3 D-printing equipment according to claim 1, it is characterized in that, the platen regulation cylinder be servo cylinder/ Servo-cylinder.
5. a kind of 3 D-printing equipment according to claim 1, it is characterized in that, the printhead feed end passes through a feeding Pump is switched to the mixing discharge end of a mixing drum, and mixing drum is provided with cylinder charging aperture, in addition to some for being supplied to cylinder charging aperture Provided with melting heater in the material tube of material, material tube, mixing discharge end, which is provided with outlet valve, the mixing drum, to be provided with by mixing The mixing axle that motor drives, the mixing axle is provided with some agitation blades.
6. a kind of 3 D-printing equipment according to claim 5, it is characterized in that, the mixing drum is cylindrical, mixing drum Including stack shell, cylinder bottom, cylinder top, cylinder charging aperture is located at cylinder top, and mixing drum is fixed in tub located at one, and mixing drum turns with fixed tub Dynamic connection, the center of rotation of mixing drum is stack shell axis, in addition to one is used to drive the main motor that stack shell rotates around stack shell axis, Mixing discharge end is a drainage conduit fixed with cylinder bottom and the blow-off valve being located in drainage conduit, drainage conduit, mixing drum, mixing Axle is coaxial, and feeding engine is connected by material receiving tube and drainage conduit, and drainage conduit is rotated with material receiving tube and is connected, and material receiving tube is fixed on fixation In tub, provided with least four blocks arc plates in stack shell, arc plate outer surface can fit with stack shell interior sidewall surface, each arc plate edge mixing axle Circumference be uniformly distributed, the space between adjacent arcs plate is side material passing passage, and arc plate is provided with some sideslip bars, and sideslip bar wears Cross stack shell side wall and be connected with stack shell side walls, sideslip bar outer end is in outside stack shell, sideslip bar outer end is provided with pressing plate, pressing plate Provided with balancing weight, some returning springs, returning spring one end connection pressing plate, the returning spring other end are provided between pressing plate and stack shell Connect stack shell outer side surface.
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