• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a system (1) for the layered construction of a body (2) made of a photocurable substance (4), comprising a tub (5) of elastic material for receiving the substance (4) in a liquid or pasty state, a light source (10 ) for selectively selective curing of resting on the tub bottom layer (3i) of the substance (4), and one above the tub bottom (6) arranged and opposite this lowered and raised building platform (11) for adhering and lifting the cured substance layer (3i ). The invention further relates to a trough (5) for insertion into such a plant (1).
    公开号:AT514493A1
    申请号:T50391/2013
    申请日:2013-06-17
    公开日:2015-01-15
    发明作者:Klaus Dipl Ing Dr Stadlmann
    申请人:Way To Production Gmbh；
    IPC主号:
    专利说明:

    PATENT OFFICER DIPL.-ING. Dr.techn. ANDREAS WEISER EUROPEAN PATENT AND TRADEMARK ATTORNEY A-1130 VIENNA · KOPFGASSE 7 06070 WAY TO PRODUCTION GmbH A-1030 Vienna (AT)
    The present invention relates to a plant for the layered construction of a body made of a photocurable substance and a trough for insertion into such a plant.
    The construction of three-dimensional bodies of photocurable substances such as liquid, photosensitive resins or photopolymers, which are each irradiated layer by layer with masked or focused light, is under various names such as rapid prototyping, Fotosoli-dification, 3D printing or stereo (litho) known graph. In modern generative manufacturing machines pixel-controllable DLP, MEMS or micromirror chips or controllable lasers are used for the exposure of the individual layers, which can expose a resting on a translucent bottom plate substance layer in a single step to cure the layer in selected pixel areas , The hardened layer adheres to a building platform held above the bottom plate and is subsequently lifted with the latter in order to allow new liquid substance to flow onto the bottom plate, which is cured in a next exposure step, etc., etc. The body is thereby successively formed of individual ones Layers built while the build platform is gradually lifted upwards.
    A major problem in this case is the non-destructive detachment or removal of the respectively hardened layer from the bottom plate in order to allow the next liquid layer to flow after it. Numerous solutions have already been proposed in the literature in order to facilitate demolding of the hardened layer. One of these solutions is to loosely arrange a transparent, flexible release film over the bottom plate which stretches as the platform is raised and peels off successively from the edge starting from the last hardened layer, until due to its elasticity it returns to its original position above the bottom plate snaps back (DE 101 19 817 Al, JP H06 246 838 A). Other solutions use a positively controlled wegschwenk- or tiltable base plate with intermediate elastic release film (WO 2013/026087 Al, WO 01/05575 Al), which requires a drive and a control for the bottom plate. All known solutions have the disadvantage of high withdrawal forces of the cured layers of the bottom plate or release film and thus a reduced robustness of the construction process. Filigree structures are so difficult to realize. As a result, additional support structures are usually required in the body to be built, which must be removed consuming again in the finishing and unnecessarily increase the material consumption.
    The invention has the aim of creating facilities and devices of the type mentioned, which are simpler and störungsunanfälliger than the known solutions and at the same time allow a non-destructive demolding of the cured layer.
    This object is achieved in a first aspect of the invention with a plant for the layered construction of a body made of a photocurable substance, which is characterized by the combination of a trough of elastic material for receiving the substance in the liquid state, preferably at least the bottom of the trough is at least partially translucent, a light source for selective selective curing of the resting on the bottom of the tub layer of the substance, and arranged above the tub bottom and opposite this lowered and raised building platform for adhering and lifting the cured substance layer.
    The inventive system used instead of a rigid floor with an elastic release film for the demolding process a completely new approach, namely a tub, which is made of elastic material and thus deformable as a whole. As a result, the entire tub can deform with its tub bottom when lifting the construction platform and the hardened substance layer adhered thereto, which promotes and facilitates the peeling process of the substance layer from the tub bottom. After complete peeling of the hardened substance layer, the tub automatically returns to its original position due to its elasticity. This eliminates a complicated drive the bottom plate and a separate, high wear underlying elastic release film. Due to the low withdrawal forces of the solution according to the invention better surface qualities, higher detail resolutions and thinner wall thickness of the body produced can be achieved; even not fully cured areas in a component still separate themselves from the tub. This can be exploited in particular for supported areas in the component, in which the strength of the joint area is controlled by exposure parameters; It can be realized as a "strength" gradient in the component.
    A particularly advantageous embodiment of the invention is characterized in that the tub is made in one piece from the elastic material, preferably made of silicone. The tub can thus be manufactured as a cost-effective mass part, in particular as a modular exchangeable disposable product, as explained in more detail later. The inside of the tub, in particular the tub bottom, does not even need a separate seal or protective layer against the photocurable substance, since it is only intended to build one or less body, so that for this short life a possible parasitic diffusion of the substance into the surface of the tank bottom is negligible.
    In a preferred embodiment, the system according to the invention further comprises a tensioning device which is designed to exert tension or pressure, preferably approximately diametrical tension or pressure, on the trough, and a control device correspondingly controlling the tensioning device and the construction platform. As a result, the demolding process or the peeling off of the hardened layer from the trough base, in which the elastic trough is deformed by the peeling force, can be actively supported and facilitated by additional deformation forces exerted on the elastic trough. The e-lastische pan preferably allows different modes of operation: First, the jig can pull apart the trough diametrically, whereby the trough bottom is stretched and simultaneously diluted, which exerts both lateral and downward additional Abschälkräfte on the cured layer. On the other hand, the tub can also be compressed diametrically, whereby the tub bottom bulges, either down, which produces additional Ent-formkräfte, or preferably upwards, which gives a convex shape of the tub bottom relative to the cured layer and one of the Edges of the layer ago beginning incipient peeling favors. The tension and / or pressure exerted by the tensioning device can also be pulsating, so that the tub is made to vibrate, for example.
    The tensioner may be formed in any manner known in the art capable of exerting a dia-metric pull or pressure on the tub, such as a scissor or forceps construction, spindle drive or eccentric cams which press laterally on the tub or pull it, etc., etc.
    Preferably, the clamping device has two relatively movable clamping jaws, which are releasably connectable with lateral tabs of the trough, so that the tub can be exchanged quickly modular. The jaws can be moved for example by means of separate spindle drives, or only one jaw is driven and the other jaws is fixed.
    In a first preferred variant, the tabs have vertical openings which can be threaded onto threading pins of the clamping jaws. As a result, on the one hand a good hold of the tub is achieved in the clamping device and on the other hand, the tensile or compressive force of a clamping jaw can be distributed over several distributed over the width of the tub sites to avoid wrinkles in the tub bottom. For the same purpose may alternatively be provided that each tab has a horizontal opening through which a holding axis of a clamping jaw can be passed.
    It is also possible to embed in the tabs reinforcing rings, grommets, brackets od. Like. For the attack of the clamping device, for example, during injection molding of the tub. These may in general be coupling elements which can be coupled with complementary coupling elements of the tensioning beacons, e.g. Hooks that can be inserted in eyelets, and vice versa.
    According to a further preferred feature of the invention, the plant may also comprise a smoothing element, which is mounted below the tank bottom in contact with the underside thereof in a plane movable to smooth the tank bottom. Such a smoothing element is particularly useful in that phase of the building process, in which the building platform is lowered again after the removal of the last cured layer, in order to approach the bottom of the tub to the layer thickness of the next layer to be cured. At this stage, the bottom of the tub could become very viscous, i. pasty substance, which only slowly dodges the sinking building platform with the hardened layer stack, bulge elastically down. The bulge can be eliminated or smoothed by the smoothing element-preferably controlled by the control device-in order to produce a plane liquid substance layer between the tub bottom and the building platform or last hardened substance layer in the correct layer thickness for the next exposure process.
    The smoothing element can be, for example, a ruler or a squeegee, which is striped over the underside of the trough bottom. Preferably, the smoothing element is a roller that rolls on the underside of the tub floor to reduce the friction and to protect the soil.
    In a further variant of the invention, the tub floor can also be designed as a double floor. This favors a symmetrical introduction of force into the trough during pulling or pushing and also opens up the possibility of depositing a movable over the underside of the upper floor smoothing element between the two bottoms of the double bottom to smooth this.
    The double floor can also store a rigid plate between its two floors, which can slide with elastic deformation of the tub and thus the two floors against them. This results in a sandwich construction of elastic floor - rigid plate - elastic bottom. The rigid plate may for example also be enclosed on all sides by the elastic material of the tub. Such loose sliding embedding may e.g. be achieved by a non-stick coating of the plate.
    In a second aspect, the invention provides a trough for modular interchangeable insertion into a plant of the type presented here, which trough is made of an elastic material, wherein at least the bottom of the trough is at least partially translucent.
    The trough of the invention may be filled with photocurable substance and sealed at its upper side with a peelable cover sheet. The pan thus forms a disposable finished product that may be inserted into the system in the manner of a printer cartridge to build one or more bodies until the supply of photohardenable substance contained in the tub is consumed.
    Preferably, the tub is made in one piece from the elastic material, particularly preferably made of silicone, which is well suited for cost-effective mass production as a disposable part.
    As discussed, the tub may optionally be equipped with side tabs for engaging a tensioning device to apply tension or pressure to the tub. As a result, the tub can be easily anchored to these tabs in the system temporarily.
    The invention will be explained in more detail with reference to embodiments illustrated in the accompanying drawings. In the drawings show:
    Fig. 1 shows the system of the invention in a schematic side view;
    FIG. 2 shows the trough and tensioning device of the installation of FIG. 1 in an enlarged perspective view; FIG. Figures 3a and 3b show further embodiments of an insertable into the system of Figure 1 pan each in a perspective view.
    Figure 4 shows the operation of an embodiment of the system of Figure 1 with reference to schematic and fragmentary sectional views in different stages I) to V) of the manufacture of a body. and FIGS. 5 to 8 show the modes of operation of further embodiments of the system of FIG. 1 in an analogous representation as in FIG. 4.
    Fig. 1 shows a plant 1 for "rapid prototyping". for constructing a three-dimensional body 2 from individual layers 3i, 32, in general 3i, which in each case - layer by layer - are cured from a liquid substance 4 in a trough 5.
    The liquid substance 4 is irradiated by light irradiation, e.g. by UV light, curable ("photohardenable"). Under the term "light " It is understood here in general to mean any type of electromagnetic radiation which can exert such a chemical action on the substance 4, e.g. also infrared light, etc. Under the term "liquid " Here also pasty consistencies of any viscosity are understood.
    For this purpose, the trough 5 is made of a permeable material for this light irradiation, at least in that area of its trough bottom 6, over which the body 2 is to be constructed. Preferably, the entire tank bottom 6 is transparent, and possibly also its circumferential, towering from the bottom of the tub 6 Wannerand 7, in particular when the tub 5 is made in one piece.
    The trough 5 is mounted on at least two approximately diametrically opposite, lateral ends on a support structure 8, preferably via a tensioning device 9. In simplified embodiments, the tensioning device 9 can be dispensed with. The tub 5 is made of an elastic material, such as transparent elastic plastic, rubber or silicone, and with the help of the optional tensioning device 9 can also be applied approximately diametrically tensile or compressive forces on the tub 5, as will be explained in more detail later.
    Below the tub 5 is a controllable light source 10 for exposure of the respective lowermost substance layer to be cured 3i. Above the tub 5 or the tub bottom 6 is a building platform 11, which can be raised and lowered relative to the tub bottom 6 by means of a drive 12 mounted on the support structure 8. The construction platform 11 has a substantially flat underside (although this is not mandatory), which dips into the liquid substance 4 at the beginning of the body structure and is brought into a small distance to the top of the trough bottom 6. The distance corresponds essentially to the layer thickness of the layer 3i to be cured in each case and is for example a few 100 .mu.m. By lowering the building platform 11, the substance 4 is displaced and fills this distance or gap as a thin film with this layer thickness.
    The light source 10 is then activated and selectively exposes those areas of the substance layer 3i to be cured, which are to be solidified. The light source 10 may be of any type, for example, a flat light source with superior masks or exposure films individually for each layer 3i; a point-shaped movable light source such as a deflectable "write" light beam, such as a laser scanner or MEMS scanner for laser or light emitting diodes; or a pixel-by-pixel controllable area light source, e.g. a DLP, MEMS or Micromirror chip, as used for example in video beamers and with a resolution of e.g. In a single exposure step, 1920 × 1080 pixels can project an image onto the substance layer 3i, in order to cure it selectively in regions corresponding to the desired shape of the body 2 in this layer. For laser-based light sources, e.g. a laser spot in the coordinate space (X / Y plane) vector-based are moved with pinpoint accuracy, e.g. by moving the entire laser unit or by deflecting the laser beam through optical elements.
    Theoretically, the light source 10 could also be located above the trough bottom 6, in which case it is not absolutely necessary for the trough bottom 6 to be at least partially translucent.
    After the successful hardening of a layer 3i, in this case the first layer 3i, the building platform 11 is raised, the hardened layer 3i adhering to the building platform 11 - or each further layer 3i to the respective preceding layer 3i-i - and being as non-destructive as possible should solve from the bottom of the tub 6. The constructive measures to allow the most destructive detachment or removal of the hardened layer 3i from the tub bottom 6, will be described later in more detail.
    In practice, the construction platform 11 is lifted by more than the layer thickness of the next substance layer to be cured 3i + i, for example, a multiple of the layer thickness, thus liquid substance 4, which usually has high viscosity, as freely as possible in the space between the raised building platform 11 with adhered substance layer stack 3i-3i on the one hand and tray bottom 6 on the other can flow. Subsequently, the building platform 11 is lowered again with the adhered substance layer stack 3i-3i until the lowermost cured substance layer 3i lies at the correct distance from the trough bottom 6, the re-sinking displacing the substance 4 in order to produce a gap-free liquid film for the next exposure process. The system 1 thus operates cyclically in strokes of the construction platform 11, each cycle comprising the steps of lowering, exposing and lifting (demolding). The control of the system 1 is accomplished by an e-electronics 13, which controls the drive 12 of the construction platform 11, the light source 10 and the optional clamping device 9 accordingly.
    Fig. 2 shows a possible embodiment of the clamping device 9 in detail. The tensioning device 9 comprises two spindle drives 14 which are mounted on the support structure 8 and each drive a clamping jaw 16 via a threaded spindle 15. The clamping jaws 16 are guided linearly relative to each other on a linear guide 17. Optionally, only one clamping jaw 16 could be movable and the other fixed and thus a spindle drive 14 omitted, but a symmetrical movement of the two clamping jaws 16 is advantageous to spare the hardened te layer 3i when removing as possible. It is understood that the clamping jaws 16 could be moved in other ways than by spindle drives relative to each other, for example by eccentric or scissors drives, etc.
    Each clamping jaw 15 has at least one, preferably a plurality, over the width B of the trough 5 distributed threading pins 18, on each of which a side flap 7 'of the trough 5 by means of vertical openings 19 can be threaded. As a result, the tub 5 can be easily attached to the clamping device 10 from above.
    It is understood that the trough 5 with its tabs 7 'can be mounted in other ways in the clamping device 9, for example by means of holding clamps or complementary hooks or detents of the clamping jaws 16 and / or tabs 7'. Thus, coupling elements (at least partially) could be embedded in the tabs 7 ', e.g. during injection molding of the tub 5, which can be releasably coupled with complementary coupling elements which are formed on the clamping jaws 16 or mounted thereon. For example, these coupling elements embedded in the tabs 7 'may be reinforcing rings, grommets, clips, hooks, etc. that may be connected to complementary elements such as pins, hooks, clips, etc. of the jaws 16.
    If the tensioning device 9 should only exert pressure on the trough 5, it could simply push the trough 5 diametrically towards it, whereby the lugs 7 'could also be omitted. It is also possible for the trough 5 to be gripped on more than two opposite sides by the tensioning device 9, for example also in the direction of its width B. As a result, the trough 5 could be compressed or stretched from all four sides in the plane of the trough bottom 6, also alternately, ie compressed in its width direction B and stretched in its longitudinal direction L, or vice versa.
    3a and 3b show two alternative embodiments of the elastic tub 5, wherein instead of vertical openings 19 in each tab 7 ', a horizontal opening 20 is provided through which a horizontal holding axis of a clamping jaw 16 can be passed. The support shaft may for example be a wire bow (not shown), which is supplied with the tub 5 and hooked on corresponding hooks (not shown) of a clamping jaw 16.
    As shown in Fig. 3a, the tub 5 may be pre-filled with a quantity of liquid photohardenable substance 4 and may be pre-filled at its top, i. the top of its edge 7, with a peelable cover sheet 21, e.g. an aluminum foil with handle tab, to be sealed. The tub 5 with substance 4 and Foliendeckel 21 can be prefabricated and delivered, for example, as a disposable part, which is modular exchangeable used in the system 1.
    Fig. 3b shows an embodiment of the tub 5 with a double bottom 6 of an upper bottom 22 and a lower Bo the 23, between which a flat gap 24 remains. This embodiment achieves, on the one hand, a better symmetrization of the tensile and compressive forces in relation to the tabs 7 ', and on the other hand, the gap 24 can be used for further elements, as will be explained in more detail later with reference to FIGS. 7 and 8.
    4 to 8 respectively, the operation of the elastic tub 5 in different embodiments of the system 1 and in different phases of a construction cycle for a layer 3; shown, as follows:
    Phase I) starting position,
    Phase II) Lowering the build platform,
    Phase III) exposure,
    Phase IV) Lifting of the construction platform and removal of the hardened layer and phase V) End position = initial position.
    FIGS. 4a and 4b show a first embodiment of the installation 1, in which the tensioning device 9 is used for the optional application of diametral pressure or tension to the tub 5.
    Starting from the starting position (phase I), when the building platform 11 is immersed with the substance layer stack 3i-3i in the liquid substance 4 (phase II), the trough bottom 6 may temporarily bulge slightly downward due to the viscosity of the substance 4. The trough bottom 6 then turns back for the exposure process in phase III either automatically due to the elasticity of the material of the tub 5, or this is supported by additional, exerted by the clamping device 9 on the tub 5 diametrical tensile forces Fi. Tensile forces Fi may, if appropriate, already be applied to the trough 5 in phases I and / or II in order to minimize bulging in phase II.
    In phase III, the new layer 3i + 1 is cured as described by activating the light source 10.
    When lifting the building platform 11 with the adhered substance layer stack 3i-3i in phase IV, the tub bottom 6 expands due to the elasticity of the material of the tub 5 upwards, while the newly cured layer 3i + 1 gradually dissolves from the sides of the tub bottom 6 or turns off. This reduces the force required to lift the construction platform 11 and enables a gentle, non-destructive removal of the new substance layer 3i + 1. Due to the elasticity of the entire trough 5, the edge 7 of the trough 5 can also mitverformen in phase IV, which favors the deformation of the trough bottom 6 or at least not hindered.
    In phase IV, additional diametrical pressure F2 may be exerted on the tub 5 to promote upward bulging of the tub bottom 6 so that its increasingly convex shape promotes the peeling operation of the layer 3i. Alternatively (not shown) such a diametrical pressure F2 could also bulge down the trough bottom 6 to enhance the demolding force.
    Preferably, the control of the motor 12 for lifting the build platform 11 is synchronized by the electronics 13 with the control of the tensioning device 9 for pressure F2 to achieve exactly that degree of curvature of the trough bottom 6, which supports said peeling effect of the layer 3i + i and promotes.
    Alternatively, in phase IV, instead of diametrical pressure F2, diametric tension F3 could be exerted on the trough 5 to promote peeling of the trough bottom 6 from the layer 3i. Fig. 5 shows a further development of such an embodiment with a phase IV, in which already at the beginning of strong diametrical train F3 is exercised. Due to the train exercise F3 on the tub bottom 3, this expands and thereby reduces its thickness, which also promotes a progressive detachment or peeling of the trough bottom 6 starting from the sides of the layer 3i + i. Also this Zugaus exercise can be synchronized with the lift-off movement of the build platform 11 in order to achieve the greatest possible effect. In a simplified further variant of the system 1, the tensioning device 9 could be omitted altogether, i. no additional tensile or compressive forces F1 (F2, F3 could be applied to the trough 5, so that the trough 5 is temporarily elastically deformed exclusively by the immersion forces in phase II and peeling forces in phase IV.
    It is understood that the applied to the tub 5 tensile and compressive forces Fi, F2, F3 need not be applied exactly antiparallel on diametrically opposite sides of the tub, but also offset from each other and / or may be slightly inclined to each other, if desired.
    Another option is to apply the tensile and compressive forces Fi, F2, F3 each pulsating, e.g. For a limited period of time, and / or repeated alternately applied to the tub 5, in each of said phases II and IV. Thus, the tub 5 can be made to vibrate by the tensioning device 9, for example. Generally speaking, the tensioning device 9 can bring the trough 5 into a time-varying spatial stress state at any desired point in time or partial step of the process, preferably a time-varying plane stress state.
    Fig. 6 shows an additional measure for the recovery of a downwardly bulging trough bottom 6 in phase II in order to achieve a planar configuration of the trough bottom 6 for the exposure process in phase III. In this embodiment of the system 1, a smoothing element 25 is movably mounted in a substantially horizontal plane below the tank bottom 6 in contact with the underside thereof. The smoothing element 25 is, for example, a ruler or a squeegee, which extends over the entire width B of the trough base 6 and can be moved back and forth over the entire length L of the trough bottom 6 in the direction of the arrow P. Preferably, the smoothing element 25 is a rotatable roller, which can roll on the bottom of the tub bottom 6. The smoothing element 25 can for example be guided on the linear guides 17 of the clamping device 9 and is preferably driven by a (not shown) drive, which is controlled by the control electronics 13.
    In phase II or before phase III, the smoothing element 25 (at least) once moved over the bottom of the tub bottom 6 to smooth this and bring in a plane position for the exposure phase III, in which the tub bottom 6 at a defined distance to the last hardened substance layer 3i is located.
    FIGS. 7a and 7b show a special embodiment of a smoothing element 27 which, instead of or in addition to a support on the linear guides 17, is supported on a transparent sliding plate 28 which extends below the trough base 6. The smoothing element 27 could alternatively also be guided in the intermediate space 24 between the upper floor 22 and lower floor 23 of a double floor 6 according to FIG. 3b.
    In the space 24 is a rigid plate 29, which can slide against the floors 22, 23 of the double bottom 6 and - at least in the stretched state of the trough 5 - also side play 30 between the edges of the plate 2 9 and the side walls of the gap 24 has. The plate 29 can be miteingebettet example, in an injection molding of the tub 5 in the material of the tub 5. A non-stick or sliding coatings of the plate 29 can thereby prevent a firm connection of the plate 29 with the bottoms 22, 23, so that the plate 2 9 during stretching or compression of the tub 5 in the false bottom 6 can slide.
    The plate 29 prevents bulging down of the bottom 6 in phase II and does not affect the elastic peeling of the upper bottom 22 in phase IV and its return to the final and initial position V and I.
    The invention is not limited to the illustrated embodiments, but includes all variants, modifications and combinations of the aforementioned features, which fall within the scope of the appended claims.
    权利要求:
    Claims (18)
    [1]
    1. Plant for the layered structure of a body of a photocurable substance, characterized by the combination of a trough (5) made of elastic material for receiving the substance (4) in the liquid or pasty state, a light source (10) for selective selective Curing of the resting on the bottom of the tub layer (3i) of the substance (4), and one above the tub bottom (6) and against this lowered and raised building platform (11) for adhering and lifting the cured substance layer (3i).
    [2]
    2. Plant according to claim 1, characterized in that at least the bottom (6) of the trough (5) is at least partially translucent.
    [3]
    3. Plant according to claim 1 or 2, characterized in that the trough (5) is made in one piece from the elastic material, preferably made of silicone.
    [4]
    4. Plant according to one of claims 1 to 3, further characterized by a tensioning device (9) which is designed to train (Fi, F3) or pressure (F2), preferably approximately diametrical train (Fi, F3) or pressure (F2) , to exercise on the trough (5), and a tensioning device (9) and the construction platform (11) correspondingly controlling control device (13).
    [5]
    5. Plant according to claim 4, characterized in that the tensioning device (9) is designed to exert pulsating tension (Fi, F3) or pressure (F2) on the trough (5).
    [6]
    6. Plant according to claim 4 or 5, characterized in that the clamping device (9) has two relatively movable clamping jaws (16), which with lateral tabs (7 ') of the trough (5) are detachably connectable.
    [7]
    7. Plant according to claim 6, characterized in that the tabs (7 ') have openings (19, 20) through which threading pins (18), holding axes or the like. the clamping jaws (16) can be passed.
    [8]
    8. Plant according to one of claims 1 to 7, characterized in that in the tabs (7 ') reinforcing rings, eyelets, brackets, hooks od. Like. For the attack of the clamping device (9) are embedded.
    [9]
    9. Installation according to one of claims 1 to 8, further characterized by a smoothing element (25, 27), which is mounted below the tray bottom (6) in contact with the underside thereof in a plane movable to smooth the tub bottom (6).
    [10]
    10. Installation according to claim 9, characterized in that the smoothing element (25) is a roller which rolls on the underside of the tub bottom (6).
    [11]
    11. Installation according to one of claims 1 to 8, characterized in that the trough bottom (6) is a double bottom.
    [12]
    12. Plant according to claim 11, characterized in that between the two bottoms (22, 23) of the double bottom (6) via the underside of the upper bottom (22) movable smoothing element (27) is mounted to smooth this.
    [13]
    13. Plant according to claim 11, characterized in that between the two bottoms (22, 23) of the double bottom (6) is a rigid plate (29), which in elastic deformation of the trough (5) relative to the bottoms (22, 23) can slide.
    [14]
    14 trough for insertion into a system according to one of claims 1 to 13, characterized in that the trough (5) is made of elastic material.
    [15]
    15. Tub according to claim 14, characterized in that at least the bottom (6) of the trough (5) is at least partially translucent.
    [16]
    16. Tub according to claim 14 or 15, characterized in that it is filled with photocurable substance (4) and sealed at its upper side with a peelable cover sheet (21).
    [17]
    17. Tub according to one of claims 14 to 16, characterized in that it is made in one piece from a transparent e-elastic material, preferably made of silicone.
    [18]
    18. Tub according to one of claims 14 to 17, characterized in that it with lateral tabs (7 ') for the attack of a tensioning device (9) for the exercise of train (F1; F3) or pressure (F2) on the tub (5 ) Is provided.
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    同族专利:
    公开号 | 公开日
    AT514493B1|2015-04-15|
    US20160136902A1|2016-05-19|
    JP6483671B2|2019-03-13|
    WO2014201486A1|2014-12-24|
    US10414091B2|2019-09-17|
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    法律状态:
    优先权:
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    PCT/AT2014/050131| WO2014201486A1|2013-06-17|2014-06-11|System for layered construction of a body and pan therefor|
    JP2016520191A| JP6483671B2|2013-06-17|2014-06-11|System for modeling a body in layers and a bat for the system|
    EP14738715.3A| EP3010698A1|2013-06-17|2014-06-11|System for layered construction of a body and pan therefor|
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