CN105437548B - A kind of 3D printing equipment - Google Patents
A kind of 3D printing equipment Download PDFInfo
- Publication number
- CN105437548B CN105437548B CN201510940805.9A CN201510940805A CN105437548B CN 105437548 B CN105437548 B CN 105437548B CN 201510940805 A CN201510940805 A CN 201510940805A CN 105437548 B CN105437548 B CN 105437548B
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- China
- Prior art keywords
- printhead
- tapping channel
- pigment
- stack shell
- discharging
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
- B29K2995/002—Coloured
Abstract
The invention discloses a kind of 3D printing equipment, including mainframe, discharging printhead, shaping stamp pad, 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, also include pigment bucket, delivery pump, delivery pump inlet communication pigment bucket, delivery pump outlet tapping channel.The beneficial effects of the invention are as follows：The coloring of printing raw material can be fast and effeciently realized, time-consuming short, coloring is fast, and amount of pigment saves, is difficult to waste；The quality of coloring effect and final printing material can be ensured on the premise of pigment is saved, and be avoided that plug.
Description
Technical field
The invention belongs to 3D printing technique field, more particularly to a kind of 3D 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 stamp pad（Product is molded thereon）With printhead position
Move governor motion（The position of printhead can spatially be changed so that the raw material printed can fall above shaping stamp pad
Diverse location, to realize that product is three-dimensionally shaped）.During 3D printing equipment printed product, the demand of different colours is often had, is had
When can use different colours printing raw material, sometimes then can to printing raw material colour（Especially all kinds of molten plastic conducts
During raw material）.At present when being coloured to printing raw material, using the advance raw material that allows（Molten condition）Carried out with pigment (colouring matter)
The mode of mixing, compares the consuming time, and needs to use at once after mixing coloring, pigment and raw material point otherwise easily occurs
The problems such as layer, uneven entirety, the colouring material being not used can also be wasted, and pigment content ratio in raw material can be caused higher
（Pigment does not reach the coloring degree of demand less）, cause final printing material intensity, hydraulic performance decline.In addition, when there is colour changing demand
（When replacing heterochromatic raw material）Also need to first will be left in the colouring material in original print head to remove, otherwise may result in continuation and print
Go out a kind of printing raw material of one section of upper color.
The content of the invention
The present invention is of the prior art not enough there is provided one kind is rational in infrastructure in order to overcome, and can fast and effeciently be realized
Print the coloring of raw material, time-consuming short, coloring is fast, and amount of pigment saves, is difficult to waste, and smoothly, the 3D printing of efficient colour changing sets
It is standby.
To achieve these goals, the present invention uses following technical scheme：
A kind of 3D printing equipment, including mainframe, discharging printhead, shaping stamp pad, are also used to drive discharging including one
Printhead movement is so as to change the printhead displacement governor motion of discharging print head position, and 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,
Also include pigment bucket, delivery pump, delivery pump inlet communication pigment bucket, delivery pump outlet tapping channel.The printhead that discharges is used
Raw material is printed in output（Such as molten plastic）To shaping stamp pad, printhead displacement governor motion be used for adjust discharging printhead with
It is molded the relative position between stamp pad（All the time down, change is horizontal level and height in discharging printhead discharging direction）.
Delivery pump by pigment bucket in pigment（That is dye, colouring matter）Tapping channel is transported to, so as to be fought each other in tapping channel
Print raw material is coloured, and the printing raw material after coloring is discharged from tapping channel lower end, curing molding（There is conveying when pigment is conveyed
Pressure, is not in the problem of printing raw material flows to pigment transfer passage）.The coloring mode, can be without as current additive color
Mode is the same, and the first mixing of progress printing raw material and pigment reconciles, so avoiding after printing raw material and pigment mediation, easily mixed
Close raw material（With pigment）Occurs deposition layering in storage container（Pigment and printing raw material sink frivolous again）, caused by subsequently beat
During print the problem of mixed material lack of homogeneity.And just need to input pigment when printing, pigment is difficult without supply when not printing
Cause to waste.Moreover, 3D printing raw material is not necessarily fused raw material（Molten plastic etc.）Or solid bar material（Gu
Body bar material is just heated structure heating melting after tapping channel is entered）, the coloring mode of this programme can also just meet this
Class prints the coloring of raw material.In addition, when colour changing, as long as directly cutting off the feed of delivery pump（Pigment）, discharge printhead
It is interior to retain a kind of printing raw material of color（Coloring and printing discharging are very continuous, are not in that a large amount of coloring printings are former
Expect situation about retaining, because just having coloured, discharging have printed, the situation of pigment residual is less prone to）.
Preferably, it is described conveying pump discharge by coloring structure connect tapping channel, coloring structure include additive color endless tube,
Many on additive color endless tube colour tube, additive color endless tube is coaxial with tapping channel, colour tube inlet communication additive color endless tube, colours
Pipe outlet tapping channel, each colour tube is circumferentially uniformly distributed along tapping channel, and the additive color endless tube passes through pigment delivery pipe
Road is communicated to conveying pump discharge.By many colour tube week uniform feeding pigment outside, beneficial to the uniformity and effect of lifting coloring
Rate.
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, 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 it is abundant in order to ensure final printing material surface coloring, 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 to thin material the printing raw material in chrominance channel and colour, fully save face
Material, it also avoid pigment content inside final printing material too high.
Preferably, it is described discharging printhead provided with can electrified regulation METAL HEATING PROCESS block, one of METAL HEATING PROCESS block
Divide and stretch into tapping channel.This programme is applied to solid material, and solid material, which enters, is heated melting, Ran Houzai after tapping channel
Printing discharging, curing molding.This programme is also applied for the form of reheating, i.e., in order to avoid fused raw material enters tapping channel
Temperature drop is too fast afterwards, utilizes METAL HEATING PROCESS block secondary heating.
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, also including some material tubes for being used to be fed to cylinder charging aperture, provided with melting heater in material tube,
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 mixes
Material, each single raw material of solid-state is melted or melted in material tube, into mixing drum, now mixes axle with regard to agitation blades can be driven to enter
Row stirring, lifts 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, is also used to drive the main motor that stack shell rotates around stack shell axis, mixing discharge end is a row fixed with cylinder bottom including one
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.
The beneficial effects of the invention are as follows：It is rational in infrastructure, can fast and effeciently realize printing raw material coloring, it is time-consuming it is short,
Color is fast, and amount of pigment saves, is difficult to waste；Coloring effect and the product of final printing material can be ensured on the premise of pigment is saved
Matter, and it is avoided that plug；With comprehensive batch mixing structure, when being printed using compound, can eliminate it is mix layered,
The problem of deposition, make the compound printed uniform, the quality of final products 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 the structural representation at additive color endless tube in the embodiment of the present invention 1；
Fig. 7 is the internal structure schematic diagram of discharging printhead in the embodiment of the present invention 2；
Fig. 8 is the structural representation at discharging printhead in the embodiment of the present invention 3；
Fig. 9 is the structural representation at mixing drum in the embodiment of the present invention 4；
Figure 10 is the enlarged drawing at a pressing plate in Fig. 9.
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, METAL HEATING PROCESS block 25, shaping stamp pad 3, 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, hybrid electric motor 61, mixing axle 61a, agitation
Blade 61b, mixing reductor 61c, stack shell 611, cylinder bottom 612, cylinder top 613, fixed tub 62, main motor 63, main gear reducer
63a, driving pulley 63b, annular driven belt wheel 63c, power belt 63d, drainage conduit 64, material receiving tube 65, arc plate 66, sideslip bar
661st, 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 3D printing equipment, including mainframe 1, discharging printing
First 2, stamp pad 3 is molded, is also used to drive the movement of discharging printhead to change the printhead of discharging print head position including one
Displacement governor motion, the discharging printhead is provided with the printhead feed end for being used for inputting printing raw material, the discharging printing
Provided with the tapping channel 21 connected with printhead feed end in head, also including pigment bucket, delivery pump, delivery pump inlet communication pigment
Bucket, delivery pump outlet tapping channel.The printhead that discharges is used to export printing raw material（Such as molten plastic）To shaping stamp pad,
Printhead displacement governor motion is used to adjust the relative position between discharging printhead and shaping stamp pad（Discharge printhead discharging
All the time down, change is horizontal level and height in direction）.Delivery pump by pigment bucket in pigment（That is dye, colouring matter）
Tapping channel is transported to, so as to be coloured in tapping channel to printing raw material.The coloring mode, can be without as at present
Additive color mode it is the same, the mixing for first carrying out printing raw material and pigment reconciles, so avoid after printing raw material and pigment reconciles,
Easily in mixed material（With pigment）Occurs deposition layering in storage container（Pigment and printing raw material sink frivolous again）, caused by
During follow-up printing the problem of mixed material lack of homogeneity.Moreover, 3D printing raw material is not necessarily fused raw material（Molten plastic
Deng）Or solid bar material（Solid bar material is just heated structure heating melting after tapping channel is entered）, this programme
Coloring mode can also just meet such printing raw material coloring.
The conveying pump discharge connects tapping channel by coloring structure, and coloring structure includes additive color endless tube 51, located at adding
Many on colour circle pipe colour tube 52, additive color endless tube is coaxial with tapping channel, colour tube inlet communication additive color endless tube, colour tube and go out
Mouthful connection tapping channel, each colour tube is circumferentially uniformly distributed along tapping channel, and the additive color endless tube passes through pigment transfer pipeline 53
It is communicated to conveying pump discharge.Conveying pump inlet can also be connected by another pigment transfer pipeline and pigment barrel, and delivery pump can be with
From all kinds of screw pumps etc..By many colour tube week uniform feeding pigment outside, beneficial to the uniformity and efficiency of lifting coloring.
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.
Embodiment 2：The basic structure and embodiment be the same as Example 1 of the present embodiment, its difference is：
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 it is abundant in order to ensure final printing material surface coloring, 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 to thin material the printing raw material in chrominance channel
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 of the present embodiment, its difference is：
As shown in Figure 8, it is described discharging printhead provided with can electrified regulation METAL HEATING PROCESS block 25, METAL HEATING PROCESS block
A part is stretched into tapping channel.This programme is applied to solid material, and solid material, which enters, is heated melting after tapping channel, so
Print discharging, curing molding again afterwards.This programme is also applied for the form of reheating, i.e., discharged in order to avoid fused raw material enters
Temperature drop is too fast after passage, utilizes METAL HEATING PROCESS block secondary heating.
Embodiment 4：The basic structure and embodiment be the same as Example 1 or 2 or 3 of the present embodiment, its difference is：
As shown in Fig. 9, Figure 10, the mixing that the printhead feed end is switched to a mixing drum by a feeding engine discharges
End, mixing drum is provided with cylinder charging aperture, also including some material tubes for being used to be fed to cylinder charging aperture, provided with melting in material tube
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, and each single raw material of solid-state is melted in material tube
Or melt, into mixing drum, now mixing axle just can drive agitation blades to be stirred, and lift 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, is also used to drive the main motor 63 that stack shell rotates around stack shell axis, mixing discharge end is one to be fixed with cylinder bottom including one
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 within 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.
Claims (5)
1. a kind of 3D printing equipment, including mainframe, discharging printhead, shaping stamp pad, are also used to drive discharging to beat including one
Print head is moved so as to change the printhead displacement governor motion of discharging print head position, it is characterized in that, on the discharging printhead
Provided with the printhead feed end for inputting printing raw material, it is provided with and going out that printhead feed end is connected in the discharging printhead
Expect passage, also including pigment bucket, delivery pump, delivery pump inlet communication pigment bucket, delivery pump outlet tapping channel is described defeated
Send the pump discharge to connect tapping channel by coloring structure, coloring structure include additive color endless tube, many on additive color endless tube
Colour tube, additive color endless tube is coaxial with tapping channel, colour tube inlet communication additive color endless tube, colour tube outlet tapping channel, respectively
Colour tube to be circumferentially uniformly distributed along tapping channel, the additive color endless tube is communicated to conveying pump discharge, institute by pigment transfer pipeline
State and the heat insulation cylinder coaxial with tapping channel be provided with tapping channel, heat insulation cylinder upper and lower end is open, heat insulation cylinder by connecting rod with
Discharged printhead connection, and thin material is formed between heat insulation cylinder lateral wall and the conduit wall of tapping channel and chrominance channel, colour tube outlet
Towards heat insulation cylinder lateral wall, colour tube exit provided with coloring check valve, the printhead feed end is connected by a feeding engine
To the mixing discharge end of a mixing drum, mixing drum is provided with cylinder charging aperture, also including some originals for being used to be fed to cylinder charging aperture
Provided with melting heater in barrel, material tube, mixing discharge end, which is provided with outlet valve, the mixing drum, to be provided with by hybrid electric motor band
Dynamic mixing axle, the mixing axle is provided with some agitation blades.
2. a kind of 3D printing equipment according to claim 1, it is characterized in that, the tapping channel is vertical and in cylinder,
Printhead discharge on a printing caster bed frame, the printhead displacement governor motion is a parallel institution, and parallel institution includes
Three side chains in parallel, side chain in parallel includes the band in two adjusting rods, a band motion blocks moving up and down, same side chain in parallel
Globular hinge between motion block and adjusting rod upper end, globular hinge between each adjusting rod lower end and printhead stand, three branch in parallel
Chain is uniformly distributed along the circumference of tapping channel.
3. a kind of 3D printing equipment according to claim 2, it is characterized in that, the side chain in parallel also include side chain motor,
Vertical guide bar, transmission mechanism, transmission mechanism include driving wheel, driven pulley, bypass the driving belt of driving wheel and driven pulley, transmission
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 3D printing equipment according to claim 1, it is characterized in that, the discharging printhead adds provided with that can be powered
The METAL HEATING PROCESS block of heat a, part for METAL HEATING PROCESS block is stretched into tapping channel.
5. a kind of 3D printing equipment according to claim 1, 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 located at cylinder top, and mixing drum is fixed in tub located at one, and mixing drum is rotated with fixed tub
Connection, the center of rotation of mixing drum is stack shell axis, is also used to drive the main motor that stack shell rotates around stack shell axis including one, mixes
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 and drainage conduit, and drainage conduit is rotated with material receiving tube and is connected, and material receiving tube is fixed on fixed cylinder
On frame, 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
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, sideslip bar outer end is provided with pressing plate, pressing plate and set
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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| Application Number | Priority Date | Filing Date | Title |
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| CN201510940805.9A CN105437548B (en) | 2015-12-15 | 2015-12-15 | A kind of 3D printing equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510940805.9A CN105437548B (en) | 2015-12-15 | 2015-12-15 | A kind of 3D printing equipment |
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| CN105437548A CN105437548A (en) | 2016-03-30 |
| CN105437548B true CN105437548B (en) | 2017-07-18 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105690773A (en) * | 2016-04-12 | 2016-06-22 | 张萍 | Intelligent high-precision 3D printer based on internet of things |
| CN106217865A (en) * | 2016-07-19 | 2016-12-14 | 冯思特 | Suspension cable type 3D print system |
| AU2018233180B2 (en) * | 2017-03-15 | 2023-12-14 | Aspect Biosystems Ltd. | Systems and methods for printing a fiber structure |
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| EP0581445A1 (en) * | 1992-07-31 | 1994-02-02 | 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 |
| CN104552944A (en) * | 2014-12-19 | 2015-04-29 | 机械科学研究总院先进制造技术研究中心 | 3D printing dispensing extruding device capable of realizing online alloying |
| CN104742364A (en) * | 2013-12-29 | 2015-07-01 | 周建 | Six-channel aggregation-fusion type squeezing nozzle for fused deposition modeling type color three-dimensional printer |
| CN205202210U (en) * | 2015-12-15 | 2016-05-04 | 杭州缤果信息科技有限公司 | 3D (three -dimensional) printing device |
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2015
- 2015-12-15 CN CN201510940805.9A patent/CN105437548B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0581445A1 (en) * | 1992-07-31 | 1994-02-02 | 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 |
| CN104742364A (en) * | 2013-12-29 | 2015-07-01 | 周建 | Six-channel aggregation-fusion type squeezing nozzle for fused deposition modeling type color three-dimensional printer |
| CN104552944A (en) * | 2014-12-19 | 2015-04-29 | 机械科学研究总院先进制造技术研究中心 | 3D printing dispensing extruding device capable of realizing online alloying |
| CN205202210U (en) * | 2015-12-15 | 2016-05-04 | 杭州缤果信息科技有限公司 | 3D (three -dimensional) printing device |
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| CN105437548A (en) | 2016-03-30 |
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| CB03 | Change of inventor or designer information |
Inventor after: Ma Zongming Inventor after: Han Pengfei Inventor before: Lu Chengqi Inventor before: Wang Shuwen Inventor before: Chen Zhihao Inventor before: Xu Qiming Inventor before: Tang Qiao |
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Effective date of registration: 20170627 Address after: 750003, No. 5, fourteen floor, Jintai building, 4 Xinhua East Street, Xingqing, the Ningxia Hui Autonomous Region, Yinchuan Applicant after: Ningxia fast union 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 Applicant before: HANGZHOU BINGUO INFORMATION TECHNOLOGY CO., LTD. |
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Granted publication date: 20170718 Termination date: 20171215 |