CN105415683A - Three-dimensional printing apparatus - Google Patents
Three-dimensional printing apparatus Download PDFInfo
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- CN105415683A CN105415683A CN201510940791.0A CN201510940791A CN105415683A CN 105415683 A CN105415683 A CN 105415683A CN 201510940791 A CN201510940791 A CN 201510940791A CN 105415683 A CN105415683 A CN 105415683A
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Abstract
The invention discloses a three-dimensional printing apparatus. The three-dimensional printing apparatus comprises a main frame, a discharge printing head and a forming printing bedplate located within the main frame, and further comprises a printing head displacement adjusting mechanism for driving the discharge printing head to move so as to change the position of the discharge printing head; the discharge printing head is provided with a printing head feed end for inputting printing raw materials; a discharge channel communicating with the printing head feed end is arranged in the discharge printing head; a bedplate adjusting cylinder is arranged blow the forming printing bedplate, and comprises a cylinder block, a piston in sliding fit with the cylinder block, and a piston rod connected with the piston; the piston rod of the bedplate adjusting cylinder is above the cylinder block; moreover, the piston rod of the bedplate adjusting cylinder is vertical and the upper end of the piston rod is connected to a bottom surface of the forming printing bedplate. The three-dimensional printing apparatus has the beneficial effects as follows: the structure is reasonable and a large degree of freedom of adjustment is achieved; simultaneously adjustment of relative heights and positions of the discharge printing head can be effectively realized, and a comprehensive adjusting speed and printing efficiency can be improved substantially.
Description
Technical field
The invention belongs to 3D printing technique field, particularly relate to a kind of 3 D-printing equipment.
Background technology
3D printer, also known as three-dimensional printer (3DP), is utilize accumulation manufacturing technology, i.e. a kind of machine of RP technique.3D printing technique is based on a kind of mathematical model file, uses molten plastic etc. can jointing material, manufactures three-dimensional object by the jointing material printed from level to level, also namely carrys out the technology of constructed object with successively printing type.Present stage 3D printer is used to manufacture a product more.
3D printer mainly comprises print structure (printhead), shaping printing platen (product is shaping) and printhead displacement governor motion thereon (spatially can change the position of printhead, make the raw material printed can drop on diverse location above shaping printing platen, three-dimensionally shaped to realize product).Be that layering prints during 3D printing device printed product, beaten one deck, the distance that discharging printhead brings Forward, then in translational adjustment position, then print again, thus, wait for that discharging printhead moves first, the time of translation again will be longer, causes print speed limited.
Summary of the invention
The present invention is to overcome deficiency of the prior art, provide a kind of rational in infrastructure, the adjustment free degree is large, regulates while effectively realizing discharging printhead relative altitude and position, and comprehensive adjustment speed and printing effect can obtain the 3 D-printing equipment obviously promoted.
To achieve these goals, the present invention is by the following technical solutions:
A kind of 3 D-printing equipment, comprise mainframe, discharging printhead, be in the shaping printing platen in mainframe, also comprise one for driving discharging printhead to move thus changing the printhead displacement governor motion of discharging print head position, described discharging printhead is provided with for inputting the printhead feed end printing raw material, the tapping channel be communicated with printhead feed end is provided with in described discharging printhead, be provided with platen below described shaping printing platen and regulate cylinder, platen regulates cylinder to comprise cylinder body, the piston be slidably matched with cylinder body, the piston rod be connected with piston, platen regulates the piston rod of cylinder upper, cylinder body under, the piston rod of platen adjustment cylinder is vertical and piston rod upper end connects shaping stamp pad plate bottom surface.3D(is three-dimensional) to print be that layering prints, when common 3D prints, beat one deck, the distance that discharging printhead brings Forward, then in translational adjustment position, then print again, in this programme, as long as there are needs, discharging printhead can direct translational adjustment position, and originally the bring Forward action of distance of discharging printhead moves down (platen regulates cylinder piston rod to shrink) one deck distance by shaping printing platen and substitutes, thus effectively improve the speed that discharging printhead and shaping printing platen relative position regulate, can significant increase printing effect.
As preferably, described tapping channel is vertical and cylindrical, discharging printhead is located on a printing caster bed frame, described printhead displacement governor motion is a parallel institution, parallel institution comprises three side chains in parallel, and side chain in parallel comprises two adjusting rods, a band motion block moving up and down, the band motion block in same side chain in parallel and globular hinge between adjusting rod upper end, globular hinge between each adjusting rod lower end and printhead stand, three side chains in parallel are uniformly distributed along the circumference of tapping channel." globular hinge ", also makes " ball-type is hinged ", " ball pivot ".This programme gives the form of a 3-freedom parallel mechanism, by moving up and down of each band motion block, thus make the angle of each adjusting rod and highly change, carry out the movement in horizontal direction and the movement in short transverse to drive printhead stand and discharging printhead.
As preferably, described side chain in parallel also comprises side chain motor, vertical guide bar, transmission mechanism, and transmission mechanism comprises driving wheel, driven pulley, walks around the driving belt of driving wheel and driven pulley, and driving belt first place is closed, in same side chain in parallel:
The rotational power of driving wheel is from side chain motor, be slidably connected between band motion block and vertical guide bar, slidably direction with motion block is vertical, band motion block is provided with determines hole, hole alive, determine hole, Kong Jun alive runs through the band upper and lower surface of motion block, driving belt is through determining hole, hole alive, and driving belt is in the part of determining in hole and is fixedly connected with between band motion block.Side chain motor drives driving belt to rotate by driving wheel, and driven pulley plays location and coordinates the effect of tensioning driving belt.Driving belt can move up and down with band motion block, and band motion block is when moving up and down, and driving belt is in that to determine relative position between part in hole and band motion block constant all the time, and driving belt is between part in hole alive and band motion block then has relative movement.
As preferably, described platen regulates cylinder to be servo cylinder/servo-cylinder.The mobile accuracy of servoBcylinder is high, is more suitable for the occasion of 3 D-printing, and other also can be used to regulate cylinder.
As preferably, also comprise an additive color endless tube, it is outer and coaxial with tapping channel that additive color endless tube is enclosed within 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, each colour tube is uniformly distributed along tapping channel circumference, and described additive color endless tube is switched to pigment cylinder by pigment delivery pump.Pigment (i.e. dye, colouring matter) in pigment cylinder is transported to additive color endless tube by pigment delivery pump, and pigment is inputted tapping channel by each colour tube by additive color endless tube, thus can carry out painted to printing raw material in tapping channel.This coloring mode, can carry out in advance printing the mediation between raw material and pigment, avoid and print after raw material and pigment is in harmonious proportion, in mixed material (with pigment) reservoir vessel, easily there is deposition layering (pigment and print raw material heavily heavy frivolous), and the problem of follow-up mixed material lack of homogeneity when printing caused.And 3D prints raw material not necessarily is fused raw material (molten plastic etc.), also can be solid bar material (solid bar material after entering tapping channel just by heating and melting), the coloring mode of this programme just can meet the painted of such printing raw material.
As preferably, the heat insulation cylinder coaxial with tapping channel is provided with in described tapping channel, the equal opening of heat insulation cylinder upper and lower end, heat insulation cylinder is connected with discharging printhead by connecting rod, form thin material 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 and be provided with painted check valve.Time painted, at least will ensureing finally to print material (material from printhead is shaped to shaping stamp pad Post RDBMS) outer surface, fully painted (the final material inside that prints also has allowed some pigment, but it is more few better, inner pigment content is higher, more final intensity and the overall structure stability printing material of impact, also more takes pigment).Directly pigment is inputted the coloring mode of tapping channel, although advantage is a lot, but easily consume relatively many pigment, this is because, pigment is entering tapping channel, after touching the fused raw material of relatively-high temperature, easily be mixed in fused raw material, if amount of pigment is insufficient, there will be final printing and expect that surface colour is incomplete, the problem of coloring degree deficiency, and in order to ensure that final printing expects that surface colour is abundant, just have to input again relatively many pigment, so, the final inner pigment that is mixed into of material or a lot of of printing, above-mentioned final intensity and the poor deficiency of overall load ability printing material can be there is.Moreover pigment prints raw material relatively, viscosity is large, poor fluidity, be subject to thermojunction block, even zoom, in tapping channel time amount of pigment large (content ratio is high), very easily causes the blocking of discharging printhead.And in this programme, have employed heat insulation cylinder structure, after the printing raw material of melting in tapping channel flow to heat insulation cylinder place from the top down, inside and outside two parts are temporarily divided into by heat insulation cylinder, relatively high temperature still possessed by heat insulation cylinder house print raw material, normally flow down from heat insulation cylinder inside, printing raw material in heat insulation cylinder outside is in thin material and in chrominance channel, relative thickness is thinner, and can be fast, constantly touch the pigment of input, (thin material in chrominance channel that to print raw thickness thin to start fully mixing, easily be combined fully with pigment), and this part prints raw material can lower the temperature (preferably control a little more than in the temperature values of solidification temperature), painted, leave when contacting with the raw material of other relatively-high temperature (the printing raw material from heat insulation cylinder inside flows down) after chrominance channel by thin material, first raw material in outer layered material (pigment adds raw material) can absorb heat intensification, instead of allow pigment be heated separately intensification (do not have during heat insulation cylinder be exactly pigment be heated separately intensification), be equivalent to external layer pigment and serve an of short duration protective effect, and in this of short duration guard time, overall raw material has left discharging printhead to start to print, solidification, thus can ensure outer fully painted, coloring degree is high and stable.In addition, heat insulation cylinder yet forms both a barrier structure, when pigment enters tapping channel, there is certain impulsive force (it is need pressure that pigment is sent into), if directly painted, pigment is more easily mixed into and prints raw material inside, and had heat insulation cylinder, can ensure that pigment only can full and uniform in chrominance channel scattering at thin material, and carry out painted to the printing raw material that thin material in chrominance channel, fully save pigment, it also avoid final printing and expect that inner pigment content is too high.
As preferably, described printhead feed end is switched to the mixing discharge end of a mixing drum by a feeding engine, mixing drum is provided with a charging aperture, also comprise some for the material tube to cylinder charging aperture feed, melting heater is provided with in material tube, mixing discharge end is provided with outlet valve, and be provided with the mixing axle driven by hybrid electric motor in described mixing drum, described mixing axle is provided with some agitation blades.When adopting the direct charging of fused raw material, fused raw material, except single material, also can be compound (different material mixing, or material mixes with pigment).Each solid-state single raw material melting or thawing in material tube, enter mixing drum, now mixes axle and agitation blades just can be driven to stir, promote the uniformity of compound.
As preferably, described mixing drum cylindrically, mixing drum comprises stack shell, the cylinder end, cylinder top, cylinder charging aperture is located at cylinder top, mixing drum is located in a fixing tub, mixing drum and fixing tub are rotationally connected, the center of rotation of mixing drum is stack shell axis, also comprise a mair motor for driving stack shell to rotate around stack shell axis, mixing discharge end be one with the drainage conduit of fixing at the bottom of cylinder and the blow-off valve be located in drainage conduit, drainage conduit, mixing drum, mixing axle is all coaxial, feeding engine is connected by material receiving tube and drainage conduit, drainage conduit and material receiving tube are rotationally connected, material receiving tube is fixed in fixing tub, at least four blocks of arc plates are provided with in stack shell, arc plate outer surface can be fitted with stack shell interior sidewall surface, each arc plate is uniformly distributed along the circumference of mixing axle, space between adjacent arcs plate is side material passing passage, arc plate is provided with some sideslip bars, sideslip bar passes stack shell sidewall and 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 is provided with balancing weight, some returning springs are provided with between pressing plate and stack shell, returning spring one end connects pressing plate, the returning spring other end connects stack shell outer side surface.Fixing tub maintains static, and stack shell can rotate, and mixing axle also can rotate, and certainly, in practical operation, preferably allows stack shell and mixing axle reversely rotate, if rotating Vortex, then velocity of rotation otherwise with, otherwise just become " geo-stationary ".We know, the cylindrical container of this class of mixing drum, in the process of carrying out batch mixing, the material of adherent (sidewall) is not easy to be stirred, and (in reality, stirring structure is difficult to accomplish adherent first, scrape the negative effect such as wall, aggravation vibrations because have, and the accuracy of manufacture requires too high; Have centrifugal action when second stirring, in compound, comparatively large, that viscosity the is higher material of quality is easily adherent, so the uniformity of compound still can be limited).Moreover, easily there is the problem such as lower leaf and heavy burder precipitation, be also unfavorable for the uniformity ensureing compound.And in this programme, there is arc plate structure, arc plate outer surface can be fitted with stack shell interior sidewall surface, under off working state, has surplus between arc plate and stack shell interior sidewall surface, and now returning spring is not also stretched.When operating (during stirring), mair motor drives stack shell to rotate, along with stack shell rotating speed promotes, under the influence of centrifugal force, the outside displacement of balancing weight becomes large (now returning spring elongation), drive arc plate near and is labelled to stack shell interior sidewall surface gradually, thus the compound at adherent place is upper and lower to arc plate, both sides can to extrude, come back to stack shell center.And again interior mobile to arc plate, only need mair motor to stop, or speed governing (reduction of speed), so under the return action of returning spring, arc plate will move inward.And in actual whipping process, agitation blades is stirred always, under the effect of agitation blades, internal mix material outwards moves (towards stack shell sidewall), and mair motor can accelerate through several times, slow down, or several times start, stop, when starting or after accelerating, arc plate promotes the compound at adherent place on arc plate, under, both sides are extruded, the compound upwards extruded is equivalent to move from the bottom to top, achieve the effect of will a part of bottom compound turn over, solve the problem of lower leaf and heavy burder precipitation on compound in passing, and the compound extruded to both sides, remaining adherent compound can be impacted (time as adherent in arc plate, adherent compound in Nei Ji side, space material passing passage between adjacent arcs plate, adherent compound is allowed again to be mixed into stack shell center, re-start stirring, therefore can ensure that compound has high uniformity.Compound after having stirred can input tapping channel and printing shaping immediately, and therefore the final quality printing material have also been obtained guarantee.
A kind of 3 D-printing equipment, comprise discharging printhead, shaping printing platen, described discharging printhead is provided with for inputting the printhead feed end printing raw material, the tapping channel be communicated with printhead feed end is provided with in described discharging printhead, the controller being provided with some solenoids, being connected with solenoid in described shaping printing platen, described discharging printhead is provided with electromagnet.Solenoid number is 4 to 12, and each solenoid is evenly distributed in shaping printing platen.In the print application of small sized product, the mode of magnetic suspension control discharging print head position can be adopted, the relative distance of discharging printhead and shaping printing platen increases can by increasing electromagnetic repulsion force to realize, the change of horizontal relative position then can by weakening the electric current of several solenoid, and the electric current increasing another several solenoid realizes.So eliminate many structures such as mainframe, save cost and space occupancy rate is low, regulate efficiency also to get a promotion.
As preferably, be provided with platen below described shaping printing platen and regulate cylinder, platen regulates the piston that cylinder comprises cylinder body, is slidably matched with cylinder body, the piston rod be connected with piston, platen regulate the piston rod of cylinder upper, cylinder body under, the piston rod that platen regulates cylinder is vertically and piston rod upper end connects shaping stamp pad plate bottom surface.
The invention has the beneficial effects as follows: rational in infrastructure, regulate the free degree large, regulate while effectively realizing discharging printhead relative altitude and position, comprehensive adjustment speed and printing effect can obviously be promoted; Possess painted mechanism, coloring effect and the final quality printing material can be ensured under the prerequisite of saving pigment, and can plug be avoided; Have comprehensive batch mixing structure, when using compound to print, can eliminate problem that is mix layered, that deposit, make the compound that prints evenly, the quality of final products is high.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is top view of the present invention;
Fig. 3 is the structural representation at the present invention one band motion block place;
Fig. 4 is a horizontal sectional drawing of band motion block of the present invention;
Fig. 5 is the structural representation at discharging printhead place in the embodiment of the present invention 1;
Fig. 6 is a profile at discharging printhead place in the embodiment of the present invention 1;
Fig. 7 is the structural representation at discharging printhead place in the embodiment of the present invention 2;
Fig. 8 is the structural representation at mixing drum place in the embodiment of the present invention 3;
Fig. 9 is the enlarged drawing at a pressing plate place 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, chrominance channel 24 by thin material, shaping printing platen 3, platen regulates cylinder 31, adjusting rod 41, band motion block 42, hole 421 alive, vertical guide bar 43, driving belt 44, additive color endless tube 51, colour tube 52, painted 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, the cylinder end 612, cylinder top 613, fixing tub 62, mair 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 661, pressing plate 662, balancing weight 663, returning spring 664, airtight and watertight padding block 665.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
Embodiment 1: in embodiment as shown in Figures 1 to 6, a kind of 3 D-printing equipment, comprise mainframe 1, discharging printhead 2, be in the shaping printing platen 3 in mainframe, also comprise one for driving discharging printhead to move thus changing the printhead displacement governor motion of discharging print head position, described discharging printhead is provided with for inputting the printhead feed end printing raw material, the tapping channel 21 be communicated with printhead feed end is provided with in described discharging printhead, be provided with platen below described shaping printing platen and regulate cylinder 31, platen regulates cylinder to comprise cylinder body, the piston be slidably matched with cylinder body, the piston rod be connected with piston, platen regulates the piston rod of cylinder upper, cylinder body under, the piston rod of platen adjustment cylinder is vertical and piston rod upper end connects shaping stamp pad plate bottom surface.3D(is three-dimensional) to print be that layering prints, when common 3D prints, beat one deck, the distance that discharging printhead brings Forward, then in translational adjustment position, then print again, in this programme, as long as there are needs, discharging printhead can direct translational adjustment position, and originally the bring Forward action of distance of discharging printhead moves down (platen regulates cylinder piston rod to shrink) one deck distance by shaping printing platen and substitutes, thus effectively improve the speed that discharging printhead and shaping printing platen relative position regulate, can significant increase printing effect.
Described tapping channel is vertical and cylindrical, discharging printhead is located on a printing caster bed frame 22, described printhead displacement governor motion is a parallel institution, parallel institution comprises three side chains in parallel, side chain in parallel comprises two adjusting rods, 41, band motion block 42 moving up and down, band motion block in same side chain in parallel and globular hinge between adjusting rod upper end, globular hinge between each adjusting rod lower end and printhead stand, three side chains in parallel are uniformly distributed along the circumference of tapping channel.In same side chain in parallel: two adjusting rods are to be with motion block for reference to being symmetrical arranged mutually." globular hinge ", also make " ball-type is hinged ", " ball pivot ", " globular hinge " fit structure comprises the flexural pivot and hinged ball of working in coordination, and hinged ball can directly be fixed structurally, also can be fixing structurally by bulb fixed bar.This programme gives the form of a 3-freedom parallel mechanism, by moving up and down of each band motion block, thus make the angle of each adjusting rod and highly change, the movement in horizontal direction and the movement in short transverse (when moving up and down together with three band motion blocks, the movement that discharging printhead carries out in short transverse can be driven) is carried out to drive printhead stand and discharging printhead.Certainly, printhead displacement governor motion is not limited to one, three-axis reference displacement governor motion conventional in current 3D printing field, or other is for the displacement governor motion driving discharging printhead to carry out moving horizontally and highly to regulate, and all can adopt.
Described side chain in parallel also comprises side chain motor, vertical guide bar 43, transmission mechanism, and transmission mechanism comprises driving wheel, driven pulley, walks around the driving belt 44 of driving wheel and driven pulley, and driving belt first place is closed, in same side chain in parallel:
The rotational power of driving wheel is from side chain motor, be slidably connected between band motion block and vertical guide bar, slidably direction with motion block is vertical, band motion block is provided with determines hole, hole 421 alive, determine hole, Kong Jun alive runs through the band upper and lower surface of motion block, driving belt is through determining hole, hole alive, and driving belt is in the part of determining in hole and is fixedly connected with between band motion block.The part that driving belt is in hole alive can move up and down relatively with between band motion block.Side chain motor drives driving belt to rotate by driving wheel, and driven pulley plays location and coordinates the effect of tensioning driving belt.Driving belt can move up and down with band motion block, when band motion block moves up and down, driving belt be in determine part in hole and between band motion block relative position constant all the time, driving belt is in part in hole alive and then has relative movement (relative move up and down) between band motion block, and wherein side chain motor can be servomotor.In same side chain in parallel: the output of side chain motor connects the input of a side chain reductor, and the output of side chain reductor is coaxially connected with driving wheel.
Described platen regulates cylinder to be servo cylinder/servo-cylinder.The mobile accuracy of servoBcylinder is high, is more suitable for the occasion of 3 D-printing, and other also can be used to regulate cylinder.
Also comprise an additive color endless tube 51, it is outer and coaxial with tapping channel that additive color endless tube is enclosed within discharging printhead, additive color endless tube be provided with many colour tube 52, colour tube inlet communication additive color endless tube, colour tube outlet tapping channel, each colour tube is uniformly distributed along tapping channel circumference, and described additive color endless tube is switched to pigment cylinder by pigment delivery pump.Pigment delivery pump can select screw pump, and pigment conveying delivery side of pump is connected by a pigment transfer pipeline 53 with between additive color endless tube, and the import of pigment delivery pump is connected by a pigment transfer pipeline with between pigment cylinder.Pigment (i.e. dye, colouring matter) in pigment cylinder is transported to additive color endless tube by pigment delivery pump, and pigment is inputted tapping channel by each colour tube by additive color endless tube, thus can carry out painted to printing raw material in tapping channel.This coloring mode, can carry out in advance printing the mediation between raw material and pigment, avoid and print after raw material and pigment is in harmonious proportion, in mixed material (with pigment) reservoir vessel, easily there is deposition layering (pigment and print raw material heavily heavy frivolous), and the problem of follow-up mixed material lack of homogeneity when printing caused.And 3D prints raw material not necessarily is fused raw material (molten plastic etc.), also can be solid bar material (solid bar material after entering tapping channel just by heating and melting), the coloring mode of this programme just can meet the painted of such printing raw material.
Embodiment 2: the basic structure of the present embodiment and embodiment are with embodiment 1, and its difference is:
As shown in Figure 7, the heat insulation cylinder 23 coaxial with tapping channel is provided with in described tapping channel, the equal opening of heat insulation cylinder upper and lower end, heat insulation cylinder is connected with discharging printhead by connecting rod, form thin material between the conduit wall (being also discharging printhead madial wall) of heat insulation cylinder lateral wall and tapping channel and chrominance channel 24, colour tube outlet towards heat insulation cylinder lateral wall, colour tube exit and be provided with painted check valve 521.Painted check valve by direction be colour tube to tapping channel, painted mouth peak is lower than heat insulation cylinder peak, painted 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 is 5 to 15mm.Time painted, at least will ensureing finally to print material (material from printhead is shaped to shaping stamp pad Post RDBMS) outer surface, fully painted (the final material inside that prints also has allowed some pigment, but it is more few better, inner pigment content is higher, more final intensity and the overall structure stability printing material of impact, also more takes pigment).Directly pigment is inputted the coloring mode of tapping channel, although advantage is a lot, but easily consume relatively many pigment, this is because, pigment is entering tapping channel, after touching the fused raw material of relatively-high temperature, easily be mixed in fused raw material, if amount of pigment is insufficient, there will be final printing and expect that surface colour is incomplete, the problem of coloring degree deficiency, and in order to ensure that final printing expects that surface colour is abundant, just have to input again relatively many pigment, so, the final inner pigment that is mixed into of material or a lot of of printing, above-mentioned final intensity and the poor deficiency of overall load ability printing material can be there is.Moreover pigment prints raw material relatively, viscosity is large, poor fluidity, be subject to thermojunction block, even zoom, in tapping channel time amount of pigment large (content ratio is high), very easily causes the blocking of discharging printhead.And in this programme, have employed heat insulation cylinder structure, after the printing raw material of melting in tapping channel flow to heat insulation cylinder place from the top down, inside and outside two parts are temporarily divided into by heat insulation cylinder, relatively high temperature still possessed by heat insulation cylinder house print raw material, normally flow down from heat insulation cylinder inside, printing raw material in heat insulation cylinder outside is in thin material and in chrominance channel, relative thickness is thinner, and can be fast, constantly touch the pigment of input, (thin material in chrominance channel that to print raw thickness thin to start fully mixing, easily be combined fully with pigment), and this part prints raw material can lower the temperature (preferably control a little more than in the temperature values of solidification temperature), painted, leave when contacting with the raw material of other relatively-high temperature (the printing raw material from heat insulation cylinder inside flows down) after chrominance channel by thin material, first raw material in outer layered material (pigment adds raw material) can absorb heat intensification, instead of allow pigment be heated separately intensification (do not have during heat insulation cylinder be exactly pigment be heated separately intensification), be equivalent to external layer pigment and serve an of short duration protective effect, and in this of short duration guard time, overall raw material has left discharging printhead to start to print, solidification, thus can ensure outer fully painted, coloring degree is high and stable.In addition, heat insulation cylinder yet forms both a barrier structure, when pigment enters tapping channel, there is certain impulsive force (it is need pressure that pigment is sent into), if directly painted, pigment is more easily mixed into and prints raw material inside, and had heat insulation cylinder, can ensure that pigment only can full and uniform in chrominance channel scattering at thin material, and carry out painted to the printing raw material that thin material in chrominance channel, fully save pigment, it also avoid final printing and expect that inner pigment content is too high.In addition, can be provided with heat insulation cooling airway in heat insulation cylinder, heat insulation cooling airway one end connects cooled exhaust pipe one end, and the heat insulation cooling airway other end connects cooling air inlet pipe one end, and the cooled exhaust pipe other end, the cooling air inlet pipe other end are all in outside discharging printhead.Thus, in the course of work, cooling air inlet pipe input cold gas can also be given, promote the effect of heat insulation of heat insulation cylinder further.
Embodiment 3: the basic structure of the present embodiment and embodiment are with embodiment 1 or 2, and its difference is:
As shown in Fig. 8, Fig. 9, described printhead feed end is switched to the mixing discharge end of a mixing drum 6 by a feeding engine, mixing drum is provided with a charging aperture, also comprise some for the material tube to cylinder charging aperture feed, melting heater is provided with in material tube, mixing discharge end is provided with outlet valve, and be provided with the mixing axle 61a driven by hybrid electric motor 61 in described mixing drum, described mixing axle is provided with some agitation blades 61b.Hybrid electric motor is located at above mixing drum, and the output of hybrid electric motor connects the input of a mixing reductor 61c, and the output of mixing reductor to stretch in mixing drum and connects mixing axle.When adopting the direct charging of fused raw material, fused raw material, except single material, also can be compound (different material mixing, or material mixes with pigment).Each solid-state single raw material melting or thawing in material tube, enter mixing drum, now mixes axle and agitation blades just can be driven to stir, promote the uniformity of compound.
Described mixing drum cylindrically, mixing drum comprises stack shell 611, the cylinder end 612, cylinder top 613, cylinder charging aperture is located at cylinder top, mixing drum is located in a fixing tub 62, mixing drum and fixing tub are rotationally connected, the center of rotation of mixing drum is stack shell axis, also comprise a mair motor 63 for driving stack shell to rotate around stack shell axis, mixing discharge end be one with the drainage conduit 64 of fixing at the bottom of cylinder and the blow-off valve be located in drainage conduit, drainage conduit, mixing drum, mixing axle is all coaxial, feeding engine is connected by material receiving tube 65 and drainage conduit, drainage conduit and material receiving tube are rotationally connected, material receiving tube is fixed in fixing tub, at least four blocks of arc plates 66 are provided with in stack shell, arc plate outer surface can be fitted with stack shell interior sidewall surface, each arc plate is uniformly distributed along the circumference of mixing axle, space between adjacent arcs plate is side material passing passage, arc plate is provided with some sideslip bars 661, sideslip bar passes stack shell sidewall and 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 662, pressing plate is provided with balancing weight 663, some returning springs 664 are provided with between pressing plate and stack shell, returning spring one end connects pressing plate, the returning spring other end connects stack shell outer side surface.Feeding engine can select screw pump, and feeding engine import is connected to drainage conduit one end by material receiving tube, and it is outer and be rotationally connected with material receiving tube that the drainage conduit other end is enclosed within material receiving tube, and feeding engine outlet is switched to printhead feed end by printhead feeding pipe.Discharge sealing ring is provided with between drainage conduit and material receiving tube.Thus the sealing of height can be ensured when drainage conduit and material receiving tube relatively rotate.The output of mair motor connects the input of a main gear reducer 63a, the output of main gear reducer is provided with a driving pulley 63b, stack shell lateral wall is fixed with the annular driven belt wheel 63c coaxial with stack shell, the closed power belt 63d in first place walks around driving pulley and annular driven belt wheel, power belt tensioning.Described hybrid electric motor is fixed by support and fixing tub.Described stack shell is provided with some airtight and watertight padding blocks 665, and described airtight and watertight padding block and sideslip bar one_to_one corresponding, between described airtight and watertight padding block and corresponding sideslip bar, slipper seal coordinates.It is the common form that is sealed and matched that slipper seal coordinates, as being exactly that slipper seal coordinates between oil cylinder piston with cylinder wall.
Fixing tub maintains static, stack shell can rotate (mair motor drives stack shell to rotate by main gear reducer, driving pulley, power belt, annular driven belt wheel), mixing axle also can rotate, certainly, in practical operation, stack shell and mixing axle is preferably allowed to reversely rotate, if rotating Vortex, then velocity of rotation otherwise with, otherwise just become " geo-stationary ".We know, the cylindrical container of this class of mixing drum, in the process of carrying out batch mixing, the material of adherent (sidewall) is not easy to be stirred, and (in reality, stirring structure is difficult to accomplish adherent first, scrape the negative effect such as wall, aggravation vibrations because have, and the accuracy of manufacture requires too high; Have centrifugal action when second stirring, in compound, comparatively large, that viscosity the is higher material of quality is easily adherent, so the uniformity of compound still can be limited).Moreover, easily there is the problem such as lower leaf and heavy burder precipitation, be also unfavorable for the uniformity ensureing compound.And in this programme, there is arc plate structure, arc plate outer surface can be fitted with stack shell interior sidewall surface, under off working state, has surplus between arc plate and stack shell interior sidewall surface, and now returning spring is not also stretched.When operating (during stirring), mair motor drives stack shell to rotate, along with stack shell rotating speed promotes, under the influence of centrifugal force, the outside displacement of balancing weight becomes large (now returning spring elongation), drive arc plate near and is labelled to stack shell interior sidewall surface gradually, thus the compound at adherent place is upper and lower to arc plate, both sides can to extrude, come back to stack shell center.And again interior mobile to arc plate, only need mair motor to stop, or speed governing (reduction of speed), so under the return action of returning spring, arc plate will move inward.And in actual whipping process, agitation blades is stirred always, under the effect of agitation blades, internal mix material outwards moves (towards stack shell sidewall), and mair motor can accelerate through several times, slow down, or several times start, stop, when starting or after accelerating, arc plate promotes the compound at adherent place on arc plate, under, both sides are extruded, the compound upwards extruded is equivalent to move from the bottom to top, achieve the effect of will a part of bottom compound turn over, solve the problem of lower leaf and heavy burder precipitation on compound in passing, and the compound extruded to both sides, remaining adherent compound can be impacted (time as adherent in arc plate, adherent compound in Nei Ji side, space material passing passage between adjacent arcs plate, adherent compound is allowed again to be mixed into stack shell center, re-start stirring, therefore can ensure that compound has high uniformity.Compound after having stirred can input tapping channel and printing shaping immediately, and therefore the final quality printing material have also been obtained guarantee.
Embodiment 4: in embodiment as shown in Figure 10, a kind of 3 D-printing equipment, comprise discharging printhead, shaping printing platen, described discharging printhead is provided with for inputting the printhead feed end printing raw material, the tapping channel be communicated with printhead feed end is provided with in described discharging printhead, the controller being provided with some solenoids, being connected with solenoid in described shaping printing platen, described discharging printhead is provided with electromagnet.Solenoid number is 4 to 12, and each solenoid is evenly distributed in shaping printing platen.
Be provided with platen below described shaping printing platen and regulate cylinder, platen regulates the piston that cylinder comprises cylinder body, is slidably matched with cylinder body, the piston rod be connected with piston, platen regulate the piston rod of cylinder upper, cylinder body under, the piston rod that platen regulates cylinder is vertically and piston rod upper end connects shaping stamp pad plate bottom surface.Described platen regulates cylinder to be servo cylinder/servo-cylinder.
In the print application of small sized product, the mode of magnetic suspension control discharging print head position can be adopted, the relative distance of discharging printhead and shaping printing platen increases can by increasing electromagnetic repulsion force to realize, the change of horizontal relative position then can by weakening the electric current of several solenoid, and the electric current increasing another several solenoid realizes.So eliminate many structures such as mainframe, save cost and space occupancy rate is low, regulate efficiency also to get a promotion.
Claims (10)
1. a 3 D-printing equipment, comprise mainframe, discharging printhead, be in the shaping printing platen in mainframe, also comprise one for driving discharging printhead to move thus changing the printhead displacement governor motion of discharging print head position, it is characterized in that, described discharging printhead is provided with for inputting the printhead feed end printing raw material, the tapping channel be communicated with printhead feed end is provided with in described discharging printhead, be provided with platen below described shaping printing platen and regulate cylinder, platen regulates cylinder to comprise cylinder body, the piston be slidably matched with cylinder body, the piston rod be connected with piston, platen regulates the piston rod of cylinder upper, cylinder body under, the piston rod of platen adjustment cylinder is vertical and piston rod upper end connects shaping stamp pad plate bottom surface.
2. a kind of 3 D-printing equipment according to claim 1, it is characterized in that, described tapping channel is vertical and cylindrical, discharging printhead is located on a printing caster bed frame, described printhead displacement governor motion is a parallel institution, parallel institution comprises three side chains in parallel, side chain in parallel comprises two adjusting rods, a band motion block moving up and down, band motion block in same side chain in parallel and globular hinge between adjusting rod upper end, globular hinge between each adjusting rod lower end and printhead stand, three side chains in parallel are 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, described side chain in parallel also comprises side chain motor, vertical guide bar, transmission mechanism, transmission mechanism comprises driving wheel, driven pulley, walks around the driving belt of driving wheel and driven pulley, driving belt first place is closed, in same side chain in parallel:
The rotational power of driving wheel is from side chain motor, be slidably connected between band motion block and vertical guide bar, slidably direction with motion block is vertical, band motion block is provided with determines hole, hole alive, determine hole, Kong Jun alive runs through the band upper and lower surface of motion block, driving belt is through determining hole, hole alive, and driving belt is in the part of determining in hole and is fixedly connected with between band motion block.
4. a kind of 3 D-printing equipment according to claim 1, is characterized in that, described platen regulates cylinder to be servo cylinder/servo-cylinder.
5. a kind of 3 D-printing equipment according to claim 1, it is characterized in that, also comprise an additive color endless tube, it is outer and coaxial with tapping channel that additive color endless tube is enclosed within 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, each colour tube is uniformly distributed along tapping channel circumference, and described additive color endless tube is switched to pigment cylinder by pigment delivery pump.
6. a kind of 3 D-printing equipment according to claim 5, it is characterized in that, the heat insulation cylinder coaxial with tapping channel is provided with in described tapping channel, the equal opening of heat insulation cylinder upper and lower end, heat insulation cylinder is connected with discharging printhead by connecting rod, form thin material 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 and be provided with painted check valve.
7. a kind of 3 D-printing equipment according to claim 1, it is characterized in that, described printhead feed end is switched to the mixing discharge end of a mixing drum by a feeding engine, mixing drum is provided with a charging aperture, also comprise some for the material tube to cylinder charging aperture feed, be provided with melting heater in material tube, mixing discharge end is provided with outlet valve, be provided with the mixing axle driven by hybrid electric motor in described mixing drum, described mixing axle is provided with some agitation blades.
8. a kind of 3 D-printing equipment according to claim 7, it is characterized in that, described mixing drum cylindrically, mixing drum comprises stack shell, the cylinder end, cylinder top, cylinder charging aperture is located at cylinder top, mixing drum is located in a fixing tub, mixing drum and fixing tub are rotationally connected, the center of rotation of mixing drum is stack shell axis, also comprise a mair motor for driving stack shell to rotate around stack shell axis, mixing discharge end be one with the drainage conduit of fixing at the bottom of cylinder and the blow-off valve be located in drainage conduit, drainage conduit, mixing drum, mixing axle is all coaxial, feeding engine is connected by material receiving tube and drainage conduit, drainage conduit and material receiving tube are rotationally connected, material receiving tube is fixed in fixing tub, at least four blocks of arc plates are provided with in stack shell, arc plate outer surface can be fitted with stack shell interior sidewall surface, each arc plate is uniformly distributed along the circumference of mixing axle, space between adjacent arcs plate is side material passing passage, arc plate is provided with some sideslip bars, sideslip bar passes stack shell sidewall and 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 is provided with balancing weight, some returning springs are provided with between pressing plate and stack shell, returning spring one end connects pressing plate, the returning spring other end connects stack shell outer side surface.
9. a 3 D-printing equipment, it is characterized in that, comprise discharging printhead, shaping printing platen, it is characterized in that, described discharging printhead is provided with for inputting the printhead feed end printing raw material, be provided with the tapping channel be communicated with printhead feed end in described discharging printhead, the controller being provided with some solenoids, being connected with solenoid in described shaping printing platen, described discharging printhead is provided with electromagnet.
10. a kind of 3 D-printing equipment according to claim 9, it is characterized in that, be provided with platen below described shaping printing platen and regulate cylinder, platen regulates the piston that cylinder comprises cylinder body, is slidably matched with cylinder body, the piston rod be connected with piston, platen regulate the piston rod of cylinder upper, cylinder body under, the piston rod that platen regulates cylinder is vertically and piston rod upper end connects shaping stamp pad plate bottom surface.
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