CN102529096B - For the manufacture of the device of the article of three-dimensional - Google Patents
For the manufacture of the device of the article of three-dimensional Download PDFInfo
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- CN102529096B CN102529096B CN201010597001.0A CN201010597001A CN102529096B CN 102529096 B CN102529096 B CN 102529096B CN 201010597001 A CN201010597001 A CN 201010597001A CN 102529096 B CN102529096 B CN 102529096B
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- liquid phase
- drop
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Abstract
The present invention relates to a kind of device for the manufacture of that be made up of curable material, three-dimensional article, this device has at least one processing unit (11) for becoming to be in liquid phase by curable material processed, so as to make material from material storage device (12) by discharge unit (13) on the direction towards structure space (17) with the form discharging of interrupted drop (15).Because locking device has the solid hinge (24) of elastically deformable, necessary frame conditions for this reason can be met thus.
Description
Technical field
The present invention relates to a kind of according to claim 1 as described in the preamble, for the manufacture of the device of that be made up of curable material, three-dimensional article.
Background technology
It is known that by injection moulding or be squeezed in manufacture component in enormous quantities or series in plastic components manufacture.The advantage of plastics injection moulding is particularly based on the high-precision manufacture that the component geometry of complexity constructs, and wherein the functional diversity of Shooting Technique meets with low cost in optimal manner and produces the requirement of plastic components economically.
Meanwhile, for 1 formula with the plastic components of small lot, such as have very temporary supply and and injection moulding parts property class like the requirement of model assembly of requirement of characteristic day by day increase.There is manufacturing process to manufacture this parts, this manufacturing process is known widely under the concept of prototype.Being manufactured on of this parts in most cases produces geometrical construction based on by 3D data.This geometrical construction such as utilizes laser input heat to be melted by bisque by corresponding method as passed through in a different manner, and production system such as Sheet Metal Forming Technology also or with so-called fusion zone technique (Schmelzstrangverfahren) manufactures with the different connected mode of powder part.
There is known a kind of device by EP 1 886 793 A1 based on the preamble of claim 1, wherein a kind of plasticizing machining cell known in injection molding technology is in order to introduce liquid phase in material storage device on the material storage device that is coupling in and can be placed under pressure.In order to produce article on Metal pylon in structure space, making this material through discharge port with the form discharging of drop, wherein based on the adhesive force of material, must high pressure be applied and also apply high temperature under most cases.Drop should have from 0.01 to 0.5mm at this
3size.The opening time of discharging dividing plate should preferably in the scope of several milliseconds and the diameter of discharge port in the scope of 1/tens millimeters.
Be there is known the principle being similar to inkjet printing by WO 95/05943, wherein deposited the independent drop coming from a kind of material.Being deposited on when using known piezoelectric transducer of drop is carried out, wherein by material " hydrocone type " by transporting again in tank (nachgefoerdert).Therefore the material being in printhead place is not under pressure.
According to similar principle, according to US-patent 6,850,334 B1 and 6, the method for 658,314 B1 carries out work, and wherein photopolymer material prints according to the principle of inkjet printing, and with post-exposure.Much this field (such as US 6,259,962 B1 are belonged to the patent application that the design of attached printhead and the method for removing of problem that therefore produces are studied, WO 00/52624 A1, WO 00/76772 A1, WO 01/26023 A1, WO 01/53105A2, WO 2004/044816 A1, WO 2004/050323 A1, WO 2004/096514A2, WO 2004/096527 A2, WO 2005/053928 A2, EP 1 637 307 A2 or DE 199 31 112 A1).
Particularly DE 100 13 451 A1 and DE 100 13 450 B4 also or a kind of principle of DE 19,626 428 A1 and DE 200 05 997 U1 research and utilization, namely how can be produced the drop of the single dispersing (monodisperse) of particle size identical as far as possible best by the concussion generator of piezoelectricity.But this do not refer to utilize plastics technology produce drop.
In a kind of solution, from be in large pressure and may be should be minimum in the material storage device at high temperature by the fluent material of high viscosity, as the plastics of fusing with the independent share of dispersion downwards until a few microgram processes, in this solution, if the share of particularly discharging has kinetic energy high like this, namely this share can overcome adhesive force and departs from from device and flow away as drop, then occur sealing problem rapidly.
Summary of the invention
Based on this prior art, the object of the invention is to, propose a kind of device of the article for the manufacture of three-dimensional, this device also reliably works under aforesaid condition.
This object is realized by the device with feature described in claim 1.
Under aforesaid condition, device for discharging has the sealing the least possible relative to the external world as metering units.For this reason, locking device has the solid hinge of elastically deformable.Thus, on the one hand can handle the locking device being designed to nozzle needle, on the other hand executing agency the condition worsened without undergoing material storage device inside.Therefore, except the filling mouth of material storage device and discharging dividing plate, other sealing is not needed.Because solid hinge is relevant to by corresponding geometry designs in addition have similar integrated reset force from the executing agency of external action, the connection of executing agency and material storage device can realize and be relevant to masterpiece being used in one-sided realization with minimum contact area thus.
Additional advantage is provided by dependent claims and the following description.
Accompanying drawing explanation
The present invention is explained below according to an embodiment illustrated in the accompanying drawings.Shown in figure:
Fig. 1 is the side view that the part of this device is blocked,
Fig. 2 is the cross section of the amplification in Fig. 1 in the region of discharge unit,
Fig. 3 is sectional view and the 3-D view of locking device,
Fig. 4 is the discharge unit according to Fig. 2, and it is connected with affiliated controller.
Detailed description of the invention
Exemplarily explain the present invention with reference to accompanying drawing now.Certain embodiment is only example, and the theory of invention should be confined to specific layout by this example.It may be noted that namely the present invention is not limited to all parts and each method step of device, this is because these parts and method step can change before the invention is described in detail.Here the concept applied only is determined for especially embodiment being described, and applies without restriction.If this external description or in the claims application odd number or indefinite article, as long as overall association does not solely show other implication, then this also relates to multiple element.
Accompanying drawing shows a kind of device for being made that be made up of curable material, three-dimensional article 16 by discharge point dripping continuously, this material or be in liquid phase in initial state or can liquefy.This can such as carry out thus, and namely independent interrupted drop 15 carries out discharging by discharge unit 13 continuously, until obtain the target 16 on Metal pylon 14 in structure space 17 layer by layer.Curable material is material, the such as silicon of plasticizing, or material, the such as plastics of plasticization, also or pulverulent material, wherein depends primarily on, namely curable material or be in liquid phase in initial state or can liquefy.Material also can be reversible fusible and material that is that therefore can reuse under heating state.As long as other material can be plastified by this device and particularly discharge by least one discharge unit 13 arbitrarily, so just these materials can be used.
Curable material has the source and course of so-called stratiform in the liquid phase.In this external source and course, the deposit of liquation arrives inwall place.This is the most obvious in the understanding of the knowledge to injection molding technology.When casting the pipeline of simple, rectangle, liquation injects through so-called pour point and from this point, utilizes the flow front closed circularly to launch, until liquation is filled with the overall width of die cavity.After a while, the region between entrance and flow front can be considered as Approximate Design.Be filled with special mobility status, " source and course " in flow front from being in, if this is because observe with reference to the coordinate system of moving together this line of flow, then line of flow manifests in this region as source.Liquation two be adjacent to mold cavity surface, rapid solidification material bed between flowing, wherein liquation is advanced towards flow front with higher speed at die cavity center.When liquation will arrive flow front at once, the velocity component of liquation reduces in the flowing direction, and liquation flows obliquely towards inwall, until it is close on inwall.
The source and course of stratiform on the one hand based on the structure of its stratiform for producing " in alignment with " drop 15 of structure space 17 is favourable, particularly just in time also have problems at this in the design of little drop on the other hand, these problems make utilization carry out conversion by the known device of injection molding technology and material and become difficulty.The attachment of wall result in, and material only difficulty can form drop, this drop have expectation small size, be preferably less than or equal to 1mm
3scope in and there is the flying speed of expectation, on the other hand, the corresponding high viscosity of material just in time for form interrupted drop, the drop shape that is applicable to is important.
This is also waxing known in advance with the difference of the material of application.Because its viscosity can extract wax with common temperature-sensitive-or injection technology, that is extract wax by acceleration phoronomics, with no pressure when there is no the pressure reduction of the drop melted.The difference of the material applied here is, its viscosity number of degrees increase the first power power at the most of ten.Therefore, curable material, the dynamic viscosity number of degrees are positioned between 100 and 10000 [Pa s], and wherein preferably, curable material is plastics common in injection molding technology or resin.These needs process the material storage device that can be placed under pressure, this is because particularly in order to obtain little drop volume use little discharge port time, need without doubt from being greater than 10 until the pressure of 100MPa (100 to 1000bar).
The volume of the expectation of drop 15 is preferably special in from 0.01 to 0.5mm
3scope in, preferably from 0.05 to 0.3mm
3scope in, and particularly preferably to be at about 0.1mm
3scope in.The diameter of discharge port 20 is less than or equal to 1mm especially, preferably about 0.1mm.When the injection moulding speed of 100 very general [cm/s], utilize the value being obtained 10.000 [m/s] by the volume flow on surface, this injection moulding speed carrys out convey materials by the so-called pour point with 0.1 [mm] diameter.This has until the source and course of stratiform of flowing velocity of 10.000m/s for causing liquid phase.
The common object of this device and its discharge unit is, the fluent material of high viscosity, plastics as fusing is discharged, under this material storage device is in high pressure and possible high temperature from material storage device 12 with the minimum amount of downward until a few microgram.In the share of dispersion separately, extract the minimum/drop 15 of material, wherein can be affected the size of share by device.The share of discharging has kinetic energy high like this, and namely this share can overcome adhesive force and departs from from device and flow away as drop 15, to construct object 16 in the structure space 17 in subject support 14.
Because relate to the liquid but material of high viscosity, and this material has high adhesion force and less weight, therefore by means of material storage device 12 and form in structure space 17 for drop 15 flight space between pressure reduction transmit kinetic energy.Portioning is carried out by means of (getaktet) of rhythm control, the dividing plate be furnished with as the nozzle needle 21 of locking device.By the size of the requirement of share and the restriction of adhesive characteristics, usually need at 100MPa (1000bar) and pressure in more scope, be less than the enclosed baffle of 0.1mm and be less than the off-period of 0.001s in addition.Because be plastics under material most cases, therefore in material storage device mainly until the temperature of 450 DEG C.
Under this condition, this device utilizes the sealing/contact the least possible relative to the external world to realize as metering units.According to Fig. 2 and 3, locking device designs the solid hinge 24 with elastically deformable for this reason.Cross section in figure 3 illustrates especially, relate to be fixedly connected with portion such as in the mode of material bridge, but this portion of being fixedly connected with correspondingly can be handled by executing agency 26 on the other hand spring.The nozzle needle 21 with supporting portion 21a is employed as locking device.On the side of the nozzle needle 21 of central authorities, thinning for the material forming solid hinge 24.Executing agency directly or by middleware can act on abutment face 21b overleaf.Closing means utilizes nozzle needle 21 to enclose discharging dividing plate 27.
At least one processing unit is designed for and becomes to be in liquid phase by curable material processed and treated material is had at least one material storage device 12 of at least one discharge unit 13 by this arrival.Material from this through being furnished with can the outlet 20 of (taktbar) locking device of rhythm control on the direction towards structure space 17 with the form discharging of interrupted drop 15.In order to provide necessary boundary condition, at least one pressure generating unit for generation of the pressure in the liquid phase be applied in material storage device 12 is set.Material storage device 12 also can be the parts of the processing unit 11 be made up of plasticizing machining cell as in the embodiment.Then pressure generating unit is auger conveyor 28 such as shown in Figure 1 or similar conveying equipment.
Nozzle needle is directly suspended in flexible solid hinge 24, and the material storage device 12 being used for the liquid phase of material is outwards closed relative to (manipulation) executing agency 26 by this solid hinge.Therefore, except the filling mouth of material storage device 12 and discharging dividing plate 27, other sealing is not needed.Because solid hinge 24 is relevant to by corresponding geometry designs have similar integrated reset force from the executing agency 26 of external action on abutment face 21b, executing agency can be realized thus to be connected on material storage device that there is minimum contact surface, that be under high pressure and high temperature and this effect being connected to the one-sided power of being relevant to realizes.
Solid hinge 24 is used as the sealing device for material storage device 12 simultaneously on the direction towards executing agency 26, handles by this executing agency according to Fig. 2 nozzle needle 21 one-sided.Executing agency preferably by insulating part and material storage device 12 insulate ground and arrange at interval, this is as shown in Figure 4.
The solid hinge 24 formed thus can realize with the design of different geometries and such as can be designed with prestressing force like this, and namely discharging dividing plate 27 is closed passively or opened passively.Solid hinge can be made up of material withstand voltage and heat-resisting arbitrarily, and metal is not only by these materials, and such as also comprises fibre-reinforced lightweight structural material.In material storage device 12 or the area bearing pressure in exit passageway 12b on the side regarding to outlet 20, be greater than the area in the region of outlet 20.Nozzle needle 21 is opened passively thus.This means, executing agency 26 compresses opening on one's own initiative, or opening is not by opening executing agency's feed.
Executing agency 26 can be designed as cam rotor, directly magnet (Direktmagnet) or is designed to piezoelectric element.Preferably, executing agency 26 manually or controllably can regulate in prestressed situation.Sensor 19 can be set according to Fig. 4 equally, its signal corresponding to the condition of work in material storage device adjust again executing agency 26 position and and then adjust operating point again, this is necessary based on high pressure and high-temperature expansion for compensation.According to Fig. 4, such as power is detected and adjusts to power rated value again by controller 18 and adjuster 22 in controls.Thus it is possible that utilize automatic executing agency to regulate the prestressing force adjusting solid hinge again by the pressure be applicable to-in material storage device 12 and temperature sensor corresponding to the condition of work in material storage device.
Preferably, executing agency 26 is designed to power measuring cell, to measure and to adjust the prestressing force of solid hinge 24 on operating point again.Advantageously, executing agency is piezoelectric element.Utilize such sensor 19 and controller 18 also possible that, utilize executing agency aptly on solid hinge place travel path-/line of force road, so as thus also compatibly and wittingly impact need shape, the such as drop shape of the material of discharging.
It is evident that, can to this description carry out in maximum different degree be equal to change in the scope of affiliated claim modification, change and adjustment.
Reference number table
11 processing units
12 material storage devices
12b exit passageway
13 discharge unit
14 Metal pylons
15 drops
16 article
17 structure spaces
18 controllers
19 sensors
20 outlets
21 nozzle needles
21a supporting portion
21b is used for the abutment face of 26
22 adjusters
24 solid hinge
25 insulating parts
26 executing agencies
27 discharging dividing plates
28 auger conveyors
Claims (13)
1. for the device by discharging that drop (15) manufacture is made up of curable material, three-dimensional article (16) continuously, described material or be in liquid phase in initial state or can liquefy, described device has:
-at least one is for constructing the structure space (17) of described article (16),
-at least one processing unit (11) for described curable material processed is become to be in described liquid phase,
-at least one material storage device (12) for described liquid phase, described material storage device has at least one discharge unit (13), for make described curable material through being furnished with can the outlet (20) of locking device of rhythm control on the direction towards described structure space (17) with the form discharging of interrupted described drop (15)
-at least one pressure generating unit for generation of the pressure in the described liquid phase be applied in described material storage device (12), wherein said locking device has the solid hinge (24) of elastically deformable.
2. device according to claim 1, wherein, described solid hinge (24) is designed for the sealing device of described material storage device (12) simultaneously.
3. device according to claim 1, wherein, described outlet (20) is closed by the nozzle needle (21) of described locking device, and described nozzle needle is connected with the supporting portion (21a) of described nozzle needle by described solid hinge (24).
4. device according to claim 3, wherein, described nozzle needle (21) is handled one-sided by executing agency (26).
5. device according to claim 4, wherein, described executing agency (26) and described material storage device (12) insulate and arrange at interval.
6. device according to claim 4, wherein, described executing agency (26) manually or controllably can regulate in prestressed situation.
7. device according to claim 4, wherein, arranges sensor (19), and the signal of described sensor adjusts the position of described executing agency (26) again corresponding to the condition of work in described material storage device.
8. device according to claim 4, wherein, described executing agency (26) is designed to power measuring cell, to measure and to adjust described solid hinge (24) prestressing force on operating point again.
9. device according to claim 4, wherein, described executing agency (26) is piezoelectric element.
10. device according to claim 1, wherein, be provided with the regulation and control unit (18) of the signal for detecting at least one sensor (19) and power measuring cell, and can determine according to the signal detected or the predetermined regulated value for the executing agency for handling described locking device.
11. devices according to claim 1, wherein, bear the pressure in described material storage device (12), area on the side regarding to described outlet (20) is greater than the area in the region of described outlet (20).
12. devices according to claim 1, wherein, described processing unit (11) is designed to described material storage device (12) simultaneously.
13. devices according to claim 1, wherein, described processing unit (11) is known in injection molding technology, for described curable material processed being become the plasticizing machining cell of the material of plasticizing or plasticization, described material has the source and course of so-called stratiform in described liquid phase, and described plasticizing machining cell is in order to introduce described liquid phase in described material storage device on the described material storage device (12) that is coupling in and can be placed under pressure.
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| CN201010597001.0A CN102529096B (en) | 2010-12-20 | 2010-12-20 | For the manufacture of the device of the article of three-dimensional |
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| CN201010597001.0A CN102529096B (en) | 2010-12-20 | 2010-12-20 | For the manufacture of the device of the article of three-dimensional |
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| CN102529096B true CN102529096B (en) | 2015-10-14 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1739946A (en) * | 2005-09-16 | 2006-03-01 | 上海电力学院 | Three-dimensional printing formation unit and method |
| WO2008151063A2 (en) * | 2007-05-31 | 2008-12-11 | Milton Meisner | High definition versatile stereolithic method and material |
| CN101489766A (en) * | 2006-07-18 | 2009-07-22 | 荷兰应用自然科学研究组织 | Method and system for layerwise production of a tangible object |
| CN101618604A (en) * | 2008-06-30 | 2010-01-06 | 精工爱普生株式会社 | Method and device for forming three-dimensional model, sheet material processing method, and sheet material processing device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10226803A (en) * | 1997-01-10 | 1998-08-25 | Jiibetsuku Internatl Corp:Kk | Three-dimensional structural body |
| AU2003900180A0 (en) * | 2003-01-16 | 2003-01-30 | Silverbrook Research Pty Ltd | Method and apparatus (dam001) |
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- 2010-12-20 CN CN201010597001.0A patent/CN102529096B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1739946A (en) * | 2005-09-16 | 2006-03-01 | 上海电力学院 | Three-dimensional printing formation unit and method |
| CN101489766A (en) * | 2006-07-18 | 2009-07-22 | 荷兰应用自然科学研究组织 | Method and system for layerwise production of a tangible object |
| WO2008151063A2 (en) * | 2007-05-31 | 2008-12-11 | Milton Meisner | High definition versatile stereolithic method and material |
| CN101618604A (en) * | 2008-06-30 | 2010-01-06 | 精工爱普生株式会社 | Method and device for forming three-dimensional model, sheet material processing method, and sheet material processing device |
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Effective date of registration: 20151223 Address after: Bahrain root Patentee after: Kennett Renate Address before: German lossburg Patentee before: Hehl Karl |