CN103753968A - Powder paving device for three-dimensional printing system and three-dimensional printing system - Google Patents
Powder paving device for three-dimensional printing system and three-dimensional printing system Download PDFInfo
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- CN103753968A CN103753968A CN201410006676.1A CN201410006676A CN103753968A CN 103753968 A CN103753968 A CN 103753968A CN 201410006676 A CN201410006676 A CN 201410006676A CN 103753968 A CN103753968 A CN 103753968A
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Abstract
The invention discloses a powder paving device for a three-dimensional printing system and the three-dimensional printing system with the powder paving device. The three-dimensional printing system comprises a work platform. The powder paving device comprises a first guide rail, a second guide rail, a sliding piece, a comb, a first rolling wheel, a second rolling wheel and a drive piece. The first guide rail and the second guide rail are arranged on the upper surface of the work platform at intervals. The comb is obliquely arranged on the sliding piece, and the lower edge of the comb is in contact with the upper surface of the work platform. The first rolling wheel is arranged on the first side of the comb, and the second rolling wheel is arranged on the second side of the comb. The drive piece is connected with the sliding piece. When the comb moves towards a termination position from an initial position, the first rolling wheel is in contact with the first part of the lower surface of the first guide rail, and the second rolling wheel is in contact with the first part of the lower surface of the second guide rail. The powder paving device has the advantages of being good in paving effect, high in paving efficiency, not prone to being damaged, long in service life and the like.
Description
Technical field
The present invention relates to a kind of powder paving device for 3 D-printing system, also relate to a kind of 3 D-printing system with described powder paving device.
Background technology
Three-dimensional printing technology that utilize laser or electron beam scanning to solidify preset powder bed, successively to manufacture three-dimensional body is a kind of novel manufacturing technology.Typical 3 D-printing technique has laser selective melting and electron beam selective melting, its basic processing step comprises: utilize powder supplies with pave system by dusty material at workbench upper berth generate thin layer, then laser or electron beam move on powder, selective sintering or melting powder material.Above step constantly repeats until whole three-dimensional body manufacture completes.
In manufacturing the process of three-dimensional body, laser or electron beam often there will be the phenomenons such as poly-ball, powder splash when scanning melting powder layer, cause the upper surface out-of-flatness of formation of parts.The powder system of paving need to be in this environment normally, stably work.Existing powder is paved system and is adopted the rigid structures such as scraper plate, roller, the powder system of paving is easily stuck while moving on irregular surface, cause manufacture process to be forced to interrupt, even make the powder system of paving produce expendable distortion and even fracture, thereby worsen follow-up powder, pave effect.
Summary of the invention
The present invention is intended at least solve one of technical problem existing in prior art.For this reason, one object of the present invention is to propose a kind of powder paving device for 3 D-printing system.
Another object of the present invention is to propose a kind of 3 D-printing system with the described powder paving device for 3 D-printing system.
To achieve these goals, according to the embodiment of first aspect present invention, a kind of powder paving device for 3 D-printing system is proposed, described 3 D-printing system comprises workbench, described powder paving device comprises: the first guide rail and the second guide rail, described the first guide rail and described the second guide rail are located on the upper surface of described workbench at interval, and the first of the lower surface of the first of the lower surface of wherein said the first guide rail and described the second guide rail is all spaced apart on above-below direction with described workbench; Sliding part; Comb, described comb is located on described sliding part obliquely, and the lower edge of described comb contacts with the upper surface of described workbench; The first roller and the second roller, described the first roller is located at the first side of described comb, and described the second roller is located at the second side of described comb; And actuator, described actuator is connected with described sliding part to drive described comb to move between initial position and final position by described sliding part, wherein said comb is when moving from described initial position to described final position, described the first roller contacts with the first of the lower surface of described the first guide rail, and described the second roller contacts with the first of the lower surface of described the second guide rail.
According to the powder paving device for 3 D-printing system of the embodiment of the present invention by described comb is located to described sliding part obliquely, thereby the distortional stress of the broach that can greatly reduce described comb when scraping irregular surface, and then can reduce the risk that the broach of described comb expendable distortion occurs or fractures.And, because described the first roller and described the second roller move on the constant plane of reference keeping, therefore can make the thickness of paving the powder bed obtaining be consistent.Therefore, according to the powder paving device for 3 D-printing system of the embodiment of the present invention have pave effective, pave the advantages such as efficiency is high, not fragile, long service life.
In addition, according to the powder paving device for 3 D-printing system of the embodiment of the present invention, can also there is following additional technical characterictic:
According to one embodiment of present invention, described comb is located on described sliding part pivotly, described powder paving device also comprises regulating part, and described regulating part is located at movably and on described sliding part and with described comb, contacts to regulate the size of angle of the upper surface of described comb and described workbench.Can make thus the structure of described powder paving device more reasonable, and can further improve and pave effect and pave efficiency, further extend the service life of described powder paving device.
According to one embodiment of present invention, described comb comprises: body, and described body is located on described sliding part obliquely, and described body contacts with described regulating part; The first pivotal axis, described the first pivotal axis is located on described body and is rotatably installed on described sliding part; The second pivotal axis and the 3rd pivotal axis, described the second pivotal axis is located at the first side of described body, described the 3rd pivotal axis is located at the second side of described body, and described the first roller is arranged on described the second pivotal axis, and described the second roller is arranged on described the 3rd pivotal axis; With first pave portion, described first portion of paving is located on described body, described first paves in portion and is provided with at interval a plurality of the first broach, described in each, the lower edge of the first broach contacts with the upper surface of described workbench.Can make thus the structure of described comb more reasonable.
According to one embodiment of present invention, described comb also comprises that second paves portion, described second portion of paving is located on described body, portion is paved away from described initial position by described second portion of paving relatively described first, wherein said second paves and in portion, is provided with at interval a plurality of the second broach, the upper surface interval preset distance of the lower edge of the second broach and described workbench described in each.
By arrange described second on described body, pave the lower edge of the second broach and the upper surface interval preset distance of described workbench that portion is paved by portion and described second, thereby can utilize described second portion of paving first powder tentatively to be paved, the thrust of powder can be distributed to described first and pave portion and described second and pave in portion, can reduce thus the risk of described comb distortion.
According to one embodiment of present invention, described second portion of paving is parallel to described first and paves portion.Can make thus the structure of described comb more reasonable.
According to one embodiment of present invention, the gap between adjacent two described the second broach is relative with described the first broach on the moving direction of described comb.Because this gap is relative with described the first broach, therefore described the first broach can strike off the powder spilling, and can further improve thus the effect of paving of described powder paving device.
According to one embodiment of present invention, the described powder paving device for 3 D-printing system also comprises: the first wedge and the second wedge, and described the first wedge has the first inclined-plane, and described the second wedge has the second inclined-plane; And first turnover panel and the second turnover panel, described the first turnover panel is located at pivotly the end away from described initial position of described the first guide rail and the end face away from described the first guide rail of described the first turnover panel is the 3rd inclined-plane, described the second turnover panel is located at pivotly the end away from described initial position of described the second guide rail and the end face away from described the second guide rail of described the second turnover panel is the 4th inclined-plane, described the 3rd inclined-plane is supported on described the first inclined-plane, and described the 4th inclined-plane is supported on described the second inclined-plane.
By described the first turnover panel, described the second turnover panel, described the first wedge and described the second wedge are set, thereby when moving to described initial position from described final position, described comb without contacting with the upper surface of described workbench, can prevent that thus described comb from producing large deformation and even fractureing.
According to one embodiment of present invention, the contiguous upper surface of described the first guide rail of upper surface and the upper surface of described the first wedge of described the first turnover panel, the lower surface of contiguous described first guide rail of lower surface of described the first turnover panel, the upper surface of wherein said the first turnover panel, the upper surface of described the first guide rail is concordant with the upper surface of described the first wedge, the lower surface of described the first turnover panel is concordant with the lower surface of described the first guide rail, the contiguous upper surface of described the second guide rail of upper surface and the upper surface of described the second wedge of described the second turnover panel, the lower surface of contiguous described second guide rail of lower surface of described the second turnover panel, the upper surface of described the second turnover panel, the upper surface of described the second guide rail is concordant with the upper surface of described the second wedge, the lower surface of described the second turnover panel is concordant with the lower surface of described the second guide rail.Can make thus the structure of described powder paving device more reasonable, described the first roller and described the second roller are more steady in moving process.
According to one embodiment of present invention, the angle of the upper surface of described comb and described workbench is 45 degree-85 degree.The maximum stress value when broach that can further reduce thus described comb surmounts obstacles, further reduces the risk that the broach of described comb expendable distortion occurs or fractures.
According to one embodiment of present invention, described sliding part is provided with screwed hole, and described regulating part threaded engagement is in described screwed hole, and the end of described regulating part is passed described screwed hole and contacted with described comb.Can make thus the structure of described powder paving device more reasonable, and can more easily, accurately regulate the size of angle α of the upper surface of described comb and described workbench.
According to the embodiment of second aspect present invention, propose a kind of 3 D-printing system, described 3 D-printing system comprises: workbench; With powder paving device, described powder paving device is according to the powder paving device for 3 D-printing system described in first aspect present invention, wherein said the first guide rail and described the second guide rail are located on the upper surface of described workbench at interval, the first of the lower surface of the first of the lower surface of described the first guide rail and described the second guide rail is all spaced apart on above-below direction with described workbench, and the lower edge of described comb contacts with the upper surface of described workbench.
According to the 3 D-printing system of the embodiment of the present invention by arranging according to the powder paving device for 3 D-printing system described in first aspect present invention, thereby have pave effective, pave the advantages such as efficiency is high, not fragile, long service life.
Additional aspect of the present invention and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination obviously and is easily understood becoming the description of embodiment, wherein:
Fig. 1 is according to the structural representation of the powder paving device for 3 D-printing system of the embodiment of the present invention;
Fig. 2 is according to the structural representation of the powder paving device for 3 D-printing system of the embodiment of the present invention;
Fig. 3 is according to the structural representation of the powder paving device for 3 D-printing system of the embodiment of the present invention;
Fig. 4 is according to the structural representation of the powder paving device for 3 D-printing system of the embodiment of the present invention;
Fig. 5 is according to the partial structurtes schematic diagram of the comb of the powder paving device for 3 D-printing system of the embodiment of the present invention;
Fig. 6 is according to the partial structurtes schematic diagram of the comb of the powder paving device for 3 D-printing system of the embodiment of the present invention;
Fig. 7 is according to the structural representation of the comb of the powder paving device for 3 D-printing system of the embodiment of the present invention.
The specific embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment being described with reference to the drawings, be exemplary, only for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of indications such as " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second " be only for describing object, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the invention, except as otherwise noted, the implication of " a plurality of " is two or more.
In description of the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be to be also electrically connected to; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can concrete condition understand above-mentioned term concrete meaning in the present invention.
Below with reference to Fig. 1-Fig. 7, describe according to the powder paving device 40 for 3 D-printing system of the embodiment of the present invention.As shown in Fig. 1-Fig. 7, described 3 D-printing system comprises workbench 20, according to the powder paving device 40 for 3 D-printing system of the embodiment of the present invention, comprises the first guide rail 401, the second guide rail 402, sliding part 403, comb 404, the first roller 405, the second roller 406 and actuator (not shown).
The first guide rail 401 and the second guide rail 402 are located on the upper surface 201 of workbench 20 at interval, and wherein the first of the lower surface of the first of the lower surface of the first guide rail 401 and the second guide rail 402 is all spaced apart on above-below direction with workbench 20.Comb 404 is located on sliding part 403 obliquely, and the lower edge of comb 404 contacts to the powder 2 on the upper surface 201 of workbench 20 is paved with the upper surface 201 of workbench 20.In other words, the upper surface 201 of comb 404 relative workbenches 20 is obliquely installed, and comb 404 is greater than 0 degree and is less than or equal to 90 degree with the angle α of the upper surface 201 of workbench 20.That is to say, comb 404 is located at obliquely on sliding part 403 and refers to: comb 404 tilts with respect to the upper surface 201 of workbench 20, and the upper surface 201 of comb 404 relative workbenches 20 is located on sliding part 403 obliquely.Wherein, above-below direction is as shown in the arrow A in Fig. 1-Fig. 5 and Fig. 7.
The first roller 405 is located at the first side of comb 404, and the second roller 406 is located at the second side of comb 404.Described actuator is connected with sliding part 403 to drive comb 404 to move between initial position and final position by sliding part 403.Wherein, comb 404 is when moving from described initial position to described final position, and the first roller 405 contacts with the described first of the lower surface of the first guide rail 401, and the second roller 406 contacts with the described first of the lower surface of the second guide rail 402.
Below with reference to Fig. 1-Fig. 4, describe according to the course of work of the powder paving device 40 for 3 D-printing system of the embodiment of the present invention.In Fig. 1, powder paving device 40 is positioned at described initial position.In the time need to paving the powder 2 on the upper surface 201 of workbench 20, described actuator drives comb 404 from described initial position to described final position, to move (moving direction that the arrow Fig. 1 shows comb 404) by sliding part 403.Because the lower edge of comb 404 and the upper surface 201 of workbench 20 contact, therefore the powder on the upper surface of workbench 20 201 2 can be paved to (powder 2 after paving as shown in Figure 2).
Particularly, 3 D-printing system can comprise formation cylinder, described formation cylinder can comprise cylinder body and can be located at up or down the piston in described cylinder body, and wherein said cylinder body is connected with workbench 20, and the upper surface of described cylinder body is concordant with the upper surface of workbench 20.Described formation cylinder can be known, and described formation cylinder can be connected by known methods with workbench 20, and this and inventive point of the present invention are irrelevant, at this, no longer describe in detail.In a concrete example of the present invention, on workbench 20, can be provided with the accommodation hole 202 that connects along the vertical direction workbench 20, the upper end of described formation cylinder can be contained in accommodation hole 202.
Because the upper surface 201 of comb 404 relative workbenches 20 is obliquely installed, the distortional stress of the broach that therefore can greatly reduce comb 404 when scraping irregular surface, thereby the risk that the broach that can reduce comb 404 expendable distortion occurs or fractures, can make thus the process of paving successfully carry out, can not interrupted.
And, when paving powder, owing to being located at the first roller 405 on comb 404 and the second roller 406, to take the described first of lower surface of the first guide rail 401 and the described first of the lower surface of the second guide rail 402 be that the plane of reference rolls, and powder 2 can not accumulate in the described first of lower surface of the first guide rail 401 and the described first of the lower surface of the second guide rail 402, therefore can guarantee the constant of this plane of reference.And when comb 404 was scraped obstacle, the first guide rail 401 and the second guide rail 402 produce downward thrust to comb 404, thereby guarantee that comb 404 can rely on the strain of broach to surmount obstacles completely.Because this plane of reference can keep constant, so comb 404 can be by whole lifting, thereby can not cause not having the local powder bed thickening of obstacle, can be so that pave the thickness of the powder bed obtaining and be consistent.
According to the powder paving device 40 for 3 D-printing system of the embodiment of the present invention by comb 404 is located to sliding part 403 obliquely, thereby the distortional stress of the broach that can greatly reduce comb 404 when scraping irregular surface, and then can reduce the risk that the broach of comb 404 expendable distortion occurs or fractures.And, because the first roller 405 and the second roller 406 move on the constant plane of reference keeping, therefore can make the thickness of paving the powder bed obtaining be consistent.Therefore, according to the powder paving device 40 for 3 D-printing system of the embodiment of the present invention have pave effective, pave the advantages such as efficiency is high, not fragile, long service life.
Theory is calculated and is shown, comb 404 is less with the angle α of the upper surface 201 of workbench 20, and the maximum stress value of the broach of comb 404 when crossing the obstacle of same height is less.For example, when angle α is 65 while spending, when the broach of comb 404 is crossed the obstacle of 0.2 millimeter high, the suffered maximum stress value of broach of comb 404 is that the upper surface 201(that comb 404 is vertically located at workbench 20 is that comb 404 is perpendicular to the upper surface 201 of workbench 20) time broach suffered maximum stress value 13.4%, when the broach of comb 404 is crossed the obstacle of 0.6 millimeter high, the suffered maximum stress value of the broach of comb 404 be comb 404 while being vertically located at the upper surface 201 of workbench 20 the suffered maximum stress value of broach 31.8%.
Advantageously, comb 404 can be 45 degree-85 degree with the angle α of the upper surface 201 of workbench 20.The maximum stress value when broach that can further reduce thus comb 404 surmounts obstacles, further reduces the risk that the broach of comb 404 expendable distortion occurs or fractures.
Further advantageously, comb 404 can be 65 degree with the angle α of the upper surface 201 of workbench 20.The maximum stress value when broach that can further reduce thus comb 404 surmounts obstacles, further reduces the risk that the broach of comb 404 expendable distortion occurs or fractures.
As Figure 1-Figure 4, in some embodiments of the invention, comb 404 can be located on sliding part 403 pivotly, powder paving device 40 can also comprise regulating part 407, regulating part 407 can be located on sliding part 403 movably, and regulating part 407 can contact with comb 404 to regulate the size of comb 404 and the angle α of the upper surface 201 of workbench 20.Can make thus the structure of powder paving device 40 more reasonable, and can further improve and pave effect and pave efficiency, further extend the service life of powder paving device 40.
Advantageously, on sliding part 403, can be provided with screwed hole, regulating part 407 can threaded engagement in screwed hole, the end of regulating part 407 can and contact with comb 404 through screwed hole.Can make thus the structure of powder paving device 40 more reasonable, and can more easily, accurately regulate the size of comb 404 and the angle α of the upper surface 201 of workbench 20.
With comb 404, at right and left, move up as example below, describe the big or small process of the angle α of the upper surface 201 that utilizes regulating part 407 to regulate comb 404 and workbench 20, wherein left and right directions is as shown in the arrow B in Fig. 1-Fig. 4.The main body of comb 404 is positioned at the left side of sliding part 403, and comb 404 is positioned at the left side of regulating part 407, and the left end of regulating part 407 can contact with comb 404 through the left end of screwed hole and regulating part 407.In the time need to increasing the angle α of comb 404 and the upper surface 201 of workbench 20, can rotate regulating part 407 to regulating part 407 is moved right.In the time need to reducing the angle α of comb 404 and the upper surface 201 of workbench 20, can rotate regulating part 407 to regulating part 407 is moved to the left.
As Figure 1-Figure 4, in one embodiment of the invention, for the powder paving device 40 of 3 D-printing system, also comprise the first wedge 408, the second wedge 409, the first turnover panel 410 and the second turnover panel 411.The first wedge 408 can have the first inclined-plane 4081, the second wedges 409 can have the second inclined-plane 4091.The first turnover panel 410 can be located at pivotly the end away from described initial position (for example right-hand member of the first guide rail 401) of the first guide rail 401 and the end face away from the first guide rail 401 (for example right side of the first turnover panel 410) of the first turnover panel 410 can be the 3rd inclined-plane 4101.
The second turnover panel 411 can be located at pivotly the end away from described initial position (for example right-hand member of the second guide rail 402) of the second guide rail 402 and the end face away from the second guide rail 402 (for example right side of the second turnover panel 411) of the second turnover panel 411 can be the 4th inclined-plane 4111.Wherein, the 3rd inclined-plane 4101 can be supported on the first inclined-plane 4081, and the 4th inclined-plane 4111 can be supported on the second inclined-plane 4091.When powder 2 is paved, move the end away from described initial position of comb 404 from described initial position to the first guide rail 401 and the end away from described initial position of the second guide rail 402.
Then, described actuator can drive comb 404 to move to described initial position from described final position, the first roller 405 successively through upper surface 4082, the upper surface 4102 of the first turnover panel 410 and the upper surface of the first guide rail 401 4013, the second rollers 406 of the first wedge 408 successively through upper surface 4092, the upper surface 4112 of the second turnover panel 411 and the upper surface 4021 of the second guide rail 402 of the second wedge 409.Finally, the first roller 405 from the upper surface 4013 of the first guide rail 401 tumble and the second roller 406 from upper surface 4021 upper rollers of the second guide rail 402, now comb 404 is got back to described initial position.
If carrying out backhaul on the upper surface 201 of workbench 20, moves by comb 404, be that comb 404 moves to described initial position from described final position on the upper surface 201 of workbench 20, comb 404 easily withstands irregular surface, causes comb 404 to produce large deformation and even fractures.Therefore, by the first turnover panel 410, the second turnover panel 411, the first wedge 408 and the second wedge 409 are set, thereby when comb 404 moves to described initial position from described final position, without the upper surface 201 with workbench 20, contact, can prevent that thus comb 404 from producing large deformation and even fractureing.
Advantageously, when the first inclined-plane 4081 can be parallel to the 3rd inclined-plane 4101(the first turnover panel 410 not by jack-up), when the second inclined-plane 4091 can be parallel to the 4th inclined-plane 4111(the second turnover panel 411 not by jack-up).
As Figure 1-Figure 4, the lower surface that the upper surface 4102 of the first turnover panel 410 can be close to the upper surface 4013 of the first guide rail 401 and upper surface 4082, the first turnover panels 410 of the first wedge 408 can be close to the lower surface of the first guide rail 401.The upper surface 4102 of the first turnover panel 410, the upper surface 4013 of the first guide rail 401 and the upper surface 4082 of the first wedge 408 can be concordant, and the lower surface of the first turnover panel 410 can be concordant with the lower surface of the first guide rail 401.
The lower surface that the upper surface 4112 of the second turnover panel 411 can be close to the upper surface 4021 of the second guide rail 402 and upper surface 4092, the second turnover panels 411 of the second wedge 409 can be close to the lower surface of the second guide rail 402.The upper surface 4112 of the second turnover panel 411, the upper surface 4021 of the second guide rail 402 and the upper surface 4092 of the second wedge 409 can be concordant, and the lower surface of the second turnover panel 411 can be concordant with the lower surface of the second guide rail 402.Can make thus the structure of powder paving device 40 more reasonable, the first roller 405 and the second roller 406 are more steady in moving process.
As shown in Fig. 1-Fig. 4 and Fig. 7, in examples more of the present invention, comb 404 can comprise that body 4041, the first pivotal axis 4042, the second pivotal axis 4043, the 3rd pivotal axis 4044 and first pave portion 4045.Body 4041 can be located on sliding part 403 obliquely, and body 4041 can contact with regulating part 407.The first pivotal axis 4042 can be located on body 4041, and the first pivotal axis 4042 can be rotatably installed on sliding part 403.The second pivotal axis 4043 can be located at the first side of body 4041, and the 3rd pivotal axis 4044 can be located at the second side of body 4041, and the first side of body 4041 can be relative with the second side of body 4041.The first roller 405 can be arranged on the second pivotal axis 4043, and the second roller 406 can be arranged on the 3rd pivotal axis 4044.First paves portion 4045 can be located on body 4041, and first paves in portion 4045 and can be provided with at interval a plurality of the first broach 40451, and the lower edge of each the first broach 40451 can contact with the upper surface 201 of workbench 20.The upper surface 201 of each the first broach 40451 relative workbench 20 arranges obliquely.Can make thus the structure of comb 404 more reasonable.
The first pivotal axis 4042 can be two, and first pivotal axis 4042 can be located in the first side of body 4041, and another first pivotal axis 4042 can be located in the second side of body 4041.
Advantageously, body 4041 can be tabular, and first to pave portion 4045 can be tabular, and first paves portion 4045 and can be parallel to body 4041.Body 4041 and first is paved the upper surface 201 that portion 4045 can relative workbench 20 and is arranged obliquely.
In an example of the present invention, as shown in Figure 5 and Figure 6, comb 404 can also comprise that second paves portion 4046, the second and pave portion 4046 and can be located on body 4041, and second paves portion 4046 can relative first paves portion 4045 away from described initial position.Particularly, second pave portion 4046 and can be positioned at first and pave the right side of portion 4045.Wherein, second paves in portion 4046 and can be provided with at interval a plurality of the second broach 40461, the lower edge of each the second broach 40461 can with the upper surface 201 interval preset distances of workbench 20.
By arrange second on body 4041, pave the lower edge of the second broach 40461 and the upper surface of the workbench 20 201 interval preset distances that portion 4046 is paved by portion 4046 and second, thereby can utilize second to pave portion 4046 and first powder 2 is tentatively paved, the thrust of powder 2 can be distributed to first and pave portion 4045 and second and pave in portion 4046, can reduce thus the risk of comb 404 distortion.Concrete and edge, the distance between the lower edge of each the second broach 40461 and the upper surface 201 of workbench 20 be Δ h(as shown in Figure 5).
Advantageously, second to pave portion 4046 can be tabular, and second paves portion 4046 and can be parallel to first and pave portion 4045 and body 4041.Can make thus the structure of comb 404 more reasonable.Body 4041, first is paved portion 4045 and second and is paved the upper surface 201 that portion 4046 can relative workbench 20 and arrange obliquely.Distance between the lower edge of each the second broach 40461 and the upper surface 201 of workbench 20 can be greater than 0 and be less than or equal to 1 millimeter.Preferably, the distance between the lower edge of each the second broach 40461 and the upper surface 201 of workbench 20 can be 0.2 millimeter.
As shown in Figure 6, first paves portion 4045 and second paves portion 4046 and can adopt the good material of elasticity to make, and utilizes line cutting processing to go out equally spaced groove, to form row first broach 40451 and row second broach 40461.The width of each the first broach 40451 can be 1 millimeter, and the width of each the second broach 40461 can be 1 millimeter.
First paves the thickness that portion 4045 and second paves portion 4046 can determine according to material, generally at 0.1 millimeter-1 millimeter.Advantageously, first paves portion 4045 and second paves portion 4046 and can be supported by spring steel, and the thickness that the first thickness and second of paving portion 4045 is paved portion 4046 can be 0.4 millimeter.
As shown in Figure 5 and Figure 6, advantageously, second paves portion 4046 can be parallel to first and pave portion 4045.Can make thus the structure of comb 404 more reasonable.
In a concrete example of the present invention, as shown in Figure 6, the gap 40462 between adjacent two the second broach 40461 for example, on the moving direction (left and right directions) of comb 404 can be relative with the first broach 40451.In other words, first pave portion 4045 and second and pave portion 4046 setting of can staggering.Pave portion 4046 while scraping powder 2 when second, have the gap of powder 2 between adjacent two the second broach 40461 and spill.Because this gap is relative with the first broach 40451, therefore the first broach 40451 can strike off the powder spilling 2, can further improve thus the effect of paving of powder paving device 40.
As Figure 1-Figure 4, each in the first guide rail 401 and the second guide rail 402 can comprise rail portion 4011 and support portion 4012.Support portion 4012 can be located on the upper surface 201 of workbench 20, and rail portion 4011 can be located on support portion 4012, and rail portion 4011 can be positioned at the top of workbench 20.That is to say, the lower surface of rail portion 4011 and workbench 20 are spaced apart on above-below direction.
The present invention also provides a kind of 3 D-printing system.According to the 3 D-printing system of the embodiment of the present invention, comprise workbench 20 and powder paving device.Described powder paving device is the powder paving device 40 according to above-described embodiment.Wherein, the first guide rail 401 and the second guide rail 402 are located on the upper surface 201 of workbench 20 at interval, the first of the lower surface of the first of the lower surface of the first guide rail 401 and the second guide rail 402 is all spaced apart on above-below direction with workbench 20, and the lower edge of comb 404 contacts with the upper surface 201 of workbench 20.
According to the 3 D-printing system of the embodiment of the present invention by the powder paving device 40 for 3 D-printing system according to above-described embodiment is set, thereby have pave effective, pave the advantages such as efficiency is high, not fragile, long service life.
In the description of this description, the description of reference term " embodiment ", " some embodiment ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or feature can be with suitable mode combinations in any one or more embodiment or example.
Although illustrated and described embodiments of the invention, those having ordinary skill in the art will appreciate that: in the situation that not departing from principle of the present invention and aim, can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is limited by claim and equivalent thereof.
Claims (11)
1. for a powder paving device for 3 D-printing system, it is characterized in that, described 3 D-printing system comprises workbench, and described powder paving device comprises:
The first guide rail and the second guide rail, described the first guide rail and described the second guide rail are located on the upper surface of described workbench at interval, and the first of the lower surface of the first of the lower surface of wherein said the first guide rail and described the second guide rail is all spaced apart on above-below direction with described workbench;
Sliding part;
Comb, described comb is located on described sliding part obliquely, and the lower edge of described comb contacts with the upper surface of described workbench;
The first roller and the second roller, described the first roller is located at the first side of described comb, and described the second roller is located at the second side of described comb; And
Actuator, described actuator is connected with described sliding part to drive described comb to move between initial position and final position by described sliding part, wherein said comb is when moving from described initial position to described final position, described the first roller contacts with the first of the lower surface of described the first guide rail, and described the second roller contacts with the first of the lower surface of described the second guide rail.
2. the powder paving device for 3 D-printing system according to claim 1, it is characterized in that, described comb is located on described sliding part pivotly, described powder paving device also comprises regulating part, and described regulating part is located at movably and on described sliding part and with described comb, contacts to regulate the size of angle of the upper surface of described comb and described workbench.
3. the powder paving device for 3 D-printing system according to claim 2, is characterized in that, described comb comprises:
Body, described body is located on described sliding part obliquely, and described body contacts with described regulating part;
The first pivotal axis, described the first pivotal axis is located on described body and is rotatably installed on described sliding part;
The second pivotal axis and the 3rd pivotal axis, described the second pivotal axis is located at the first side of described body, described the 3rd pivotal axis is located at the second side of described body, described the first side is relative with described the second side, described the first roller is arranged on described the second pivotal axis, and described the second roller is arranged on described the 3rd pivotal axis; With
First paves portion, and described first portion of paving is located on described body, and described first paves in portion and be provided with at interval a plurality of the first broach, and described in each, the lower edge of the first broach contacts with the upper surface of described workbench.
4. the powder paving device for 3 D-printing system according to claim 3, it is characterized in that, described comb also comprises that second paves portion, described second portion of paving is located on described body, portion is paved away from described initial position by described second portion of paving relatively described first, wherein said second paves and in portion, is provided with at interval a plurality of the second broach, the upper surface interval preset distance of the lower edge of the second broach and described workbench described in each.
5. the powder paving device for 3 D-printing system according to claim 4, is characterized in that, described second portion of paving is parallel to described first and paves portion.
6. the powder paving device for 3 D-printing system according to claim 4, is characterized in that, the gap between adjacent two described the second broach is relative with described the first broach on the moving direction of described comb.
7. the powder paving device for 3 D-printing system according to claim 2, is characterized in that, also comprises:
The first wedge and the second wedge, described the first wedge has the first inclined-plane, and described the second wedge has the second inclined-plane; And
The first turnover panel and the second turnover panel, described the first turnover panel is located at pivotly the end away from described initial position of described the first guide rail and the end face away from described the first guide rail of described the first turnover panel is the 3rd inclined-plane, described the second turnover panel is located at pivotly the end away from described initial position of described the second guide rail and the end face away from described the second guide rail of described the second turnover panel is the 4th inclined-plane, described the 3rd inclined-plane is supported on described the first inclined-plane, and described the 4th inclined-plane is supported on described the second inclined-plane.
8. the powder paving device for 3 D-printing system according to claim 7, it is characterized in that, the contiguous upper surface of described the first guide rail of upper surface and the upper surface of described the first wedge of described the first turnover panel, the lower surface of contiguous described first guide rail of lower surface of described the first turnover panel, the upper surface of the upper surface of wherein said the first turnover panel, described the first guide rail is concordant with the upper surface of described the first wedge, the lower surface of described the first turnover panel is concordant with the lower surface of described the first guide rail
The contiguous upper surface of described the second guide rail of upper surface and the upper surface of described the second wedge of described the second turnover panel, the lower surface of contiguous described second guide rail of lower surface of described the second turnover panel, the upper surface of the upper surface of described the second turnover panel, described the second guide rail is concordant with the upper surface of described the second wedge, and the lower surface of described the second turnover panel is concordant with the lower surface of described the second guide rail.
9. the powder paving device for 3 D-printing system according to claim 2, is characterized in that, the angle of the upper surface of described comb and described workbench is 45 degree-85 degree.
10. the powder paving device for 3 D-printing system according to claim 2, it is characterized in that, described sliding part is provided with screwed hole, and described regulating part threaded engagement is in described screwed hole, and the end of described regulating part is passed described screwed hole and contacted with described comb.
11. 1 kinds of 3 D-printing systems, is characterized in that, comprising:
Workbench; With
Powder paving device, described powder paving device is according to the powder paving device for 3 D-printing system described in any one in claim 1-10, wherein said the first guide rail and described the second guide rail are located on the upper surface of described workbench at interval, the first of the lower surface of the first of the lower surface of described the first guide rail and described the second guide rail is all spaced apart on above-below direction with described workbench, and the lower edge of described comb contacts with the upper surface of described workbench.
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