CN103753968B - For powder paving device and the 3 D-printing system of 3 D-printing system - Google Patents
For powder paving device and the 3 D-printing system of 3 D-printing system Download PDFInfo
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- CN103753968B CN103753968B CN201410006676.1A CN201410006676A CN103753968B CN 103753968 B CN103753968 B CN 103753968B CN 201410006676 A CN201410006676 A CN 201410006676A CN 103753968 B CN103753968 B CN 103753968B
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Abstract
The invention discloses a kind of powder paving device for 3 D-printing system and the 3 D-printing system with described powder paving device.Described 3 D-printing system comprises workbench, and described powder paving device comprises: the first guide rail and the second guide rail, and the first guide rail and the second guide rail are located on the upper surface of workbench at interval; Sliding part; Comb, comb is located on sliding part obliquely, and the lower edge of comb contacts with the upper surface of workbench; First roller and the second roller, the first roller is located at the first side of comb, and the second roller is located at the second side of comb; And actuator, actuator is connected with sliding part, and wherein comb is when moving from initial position to final position, and the first roller contacts with the Part I of the lower surface of the first guide rail, and the second roller contacts with the Part I of the lower surface of the second guide rail.Described powder paving device have pave effective, pave the advantages such as efficiency is high, not fragile, long service life.
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
Utilizing laser or electron beam scanning to solidify preset powder bed, successively manufacturing the three-dimensional printing technology of three-dimensional body is a kind of novel manufacturing technology.Typical 3 D-printing technique has selective laser to melt and electron beam selective melting, its basic processing step comprises: utilize powder supplies and 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 the process manufacturing three-dimensional body, laser or electron beam often there will be the phenomenon such as poly-ball, powder splashing when scanning melting powder layer, cause the upper surface out-of-flatness of formation of parts.Powder system of paving needs normally, stably to work in this environment.Existing powder is paved system and is adopted the rigid structure such as scraper plate, roller, powder is paved system and is easily stuck when irregular surface is mobile, manufacture process is caused to be forced to interrupt, even make the powder system of paving produce expendable distortion even to fracture, thus worsen follow-up powder and pave effect.
Summary of the invention
The present invention is intended at least to solve one of technical problem existed 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 that proposition is a kind of and has the described 3 D-printing system for the powder paving device of 3 D-printing system.
To achieve these goals, embodiment according to a first aspect of the present invention proposes a kind of powder paving device for 3 D-printing system, described 3 D-printing system comprises workbench, described powder paving device comprises: the first guide rail and the second guide rail, described first guide rail and described second guide rail are located on the upper surface of described workbench at interval, and the Part I of the Part I of the lower surface of wherein said first guide rail and the lower surface of described second guide rail is all spaced apart in the vertical 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; First roller and the second roller, described first roller is located at the first side of described comb, and described second roller is located at the second side of described comb; And actuator, described actuator is connected to drive described comb to move between initial position and final position by described sliding part with described sliding part, wherein said comb is when moving from described initial position to described final position, described first roller contacts with the Part I of the lower surface of described first guide rail, and described second roller contacts with the Part I of the lower surface of described second guide rail.
Pass through described comb to be located at described sliding part obliquely according to the powder paving device for 3 D-printing system of the embodiment of the present invention, thus greatly can reduce the distortional stress of comb when scraping irregular surface of described comb, and then the risk that the comb that can reduce described comb expendable distortion occurs or fractures.And, because described first roller and described second roller are keeping the constant plane of reference moves, the thickness paving the powder bed obtained therefore can be made to 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, following additional technical characteristic can also be had according to the powder paving device for 3 D-printing system of the embodiment of the present invention:
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 to be located on described sliding part and movably with described comb contacts to regulate the size of the angle of the upper surface of described comb and described workbench.The structure that can make described powder paving device is thus more reasonable, and can improve further and pave effect and pave efficiency, extends the service life of described powder paving device further.
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; First pivotal axis, described first pivotal axis is established on the body and is rotatably installed on described sliding part; Second pivotal axis and the 3rd pivotal axis, described second pivotal axis is located at the first side of described body, described 3rd pivotal axis is located at the second side of described body, and described first roller is arranged on described second pivotal axis, and described second roller is arranged on described 3rd pivotal axis; Pave portion with first, described first portion of paving establishes on the body, and described first paves in portion and be provided with multiple first comb at interval, and the lower edge of each described first comb contacts with the upper surface of described workbench.The structure of described comb can be made thus more reasonable.
According to one embodiment of present invention, described comb also comprises second and paves portion, described second portion of paving establishes on the body, portion is paved away from described initial position by described second portion of paving relatively described first, wherein said second paves in portion and is provided with multiple second comb at interval, and the lower edge of each described second comb and the upper surface of described workbench are spaced a predetermined distance.
By arrange on the body described second pave portion and the upper surface of the described second lower edge paving second comb in portion and described workbench spaced a predetermined distance, thus described second portion of paving can be utilized first tentatively to pave powder, namely the thrust of powder can be distributed to described first to pave portion and described second and pave in portion, the risk of described comb distortion can be reduced thus.
According to one embodiment of present invention, described second portion of paving is parallel to described first and paves portion.The structure of described comb can be made thus more reasonable.
According to one embodiment of present invention, the gap between adjacent two described second comb is relative with described first comb on the moving direction of described comb.Because this gap is relative with described first comb, therefore the powder spilt can strike off by described first comb, and that can improve described powder paving device thus further paves effect.
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 first wedge has the first inclined-plane, and described second wedge has the second inclined-plane; And first turnover panel and the second turnover panel, described first turnover panel is located at the end away from described initial position of described first guide rail pivotly and the end face away from described first guide rail of described first turnover panel is the 3rd inclined-plane, described second turnover panel is located at the end away from described initial position of described second guide rail pivotly and the end face away from described second guide rail of described second turnover panel is the 4th inclined-plane, described 3rd inclined-plane is supported on described first inclined-plane, and described 4th inclined-plane is supported on described second inclined-plane.
By arranging described first turnover panel, described second turnover panel, described first wedge and described second wedge, thus when described comb moving to described initial position from described final position without the need to contacting with the upper surface of described workbench, can prevent described comb from producing large deformation thus and even fractureing.
According to one embodiment of present invention, the contiguous upper surface of described first guide rail of upper surface of described first turnover panel and the upper surface of described first wedge, the lower surface of contiguous described first guide rail of lower surface of described first turnover panel, the upper surface of wherein said first turnover panel, the upper surface of described first guide rail is concordant with the upper surface of described first wedge, the lower surface of described first turnover panel is concordant with the lower surface of described first guide rail, the contiguous upper surface of described second guide rail of upper surface of described second turnover panel and the upper surface of described second wedge, the lower surface of contiguous described second guide rail of lower surface of described second turnover panel, the upper surface of described second turnover panel, the upper surface of described second guide rail is concordant with the upper surface of described second wedge, the lower surface of described second turnover panel is concordant with the lower surface of described second guide rail.The structure that can make described powder paving device is thus more reasonable, described first roller and described second roller 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 and spends.The maximum stress value when comb that can reduce described comb thus further surmounts obstacles, the risk that the comb reducing described comb further expendable distortion occurs or fractures.
According to one embodiment of present invention, described sliding part is provided with screwed hole, described regulating part threaded engagement in described screwed hole, the end of described regulating part through described screwed hole and with described comb contacts.The structure of described powder paving device can be made thus more reasonable, and more easily, accurately can regulate the size of the angle α of the upper surface of described comb and described workbench.
Embodiment according to a second aspect of the present invention proposes a kind of 3 D-printing system, and described 3 D-printing system comprises: workbench; With powder paving device, described powder paving device is the powder paving device for 3 D-printing system described according to a first aspect of the present invention, wherein said first guide rail and described second guide rail are located on the upper surface of described workbench at interval, the Part I of the Part I of the lower surface of described first guide rail and the lower surface of described second guide rail is all spaced apart in the vertical 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 the powder paving device for 3 D-printing system described according to a first aspect of the present invention, thus have pave effective, pave the advantages such as efficiency is high, not fragile, long service life.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the structural representation of the powder paving device for 3 D-printing system according to the embodiment of the present invention;
Fig. 2 is the structural representation of the powder paving device for 3 D-printing system according to the embodiment of the present invention;
Fig. 3 is the structural representation of the powder paving device for 3 D-printing system according to the embodiment of the present invention;
Fig. 4 is the structural representation of the powder paving device for 3 D-printing system according to the embodiment of the present invention;
Fig. 5 is the partial structurtes schematic diagram of the comb of the powder paving device for 3 D-printing system according to the embodiment of the present invention;
Fig. 6 is the partial structurtes schematic diagram of the comb of the powder paving device for 3 D-printing system according to the embodiment of the present invention;
Fig. 7 is the structural representation of the comb of the powder paving device for 3 D-printing system according to the embodiment of the present invention.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction 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, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, except as otherwise noted, the implication of " multiple " is two or more.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.
Below with reference to Fig. 1-Fig. 7, the powder paving device 40 for 3 D-printing system according to the embodiment of the present invention is described.As shown in Fig. 1-Fig. 7, described 3 D-printing system comprises workbench 20, comprises the first guide rail 401, second guide rail 402, sliding part 403, comb 404, first roller 405, second roller 406 and actuator (not shown) according to the powder paving device 40 for 3 D-printing system of the embodiment of the present invention.
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 Part I of the Part I of the lower surface of the first guide rail 401 and the lower surface of the second guide rail 402 is all spaced apart in the vertical direction with workbench 20.Comb 404 is located on sliding part 403 obliquely, and the lower edge of comb 404 contacts to pave the powder 2 on the upper surface 201 of workbench 20 with the upper surface 201 of workbench 20.In other words, the upper surface 201 of the relative workbench 20 of comb 404 is obliquely installed, and namely comb 404 is greater than 0 degree with the angle α of the upper surface 201 of workbench 20 and is less than or equal to 90 degree.That is, comb 404 is located at obliquely on sliding part 403 and refers to: comb 404 is tilt relative to the upper surface 201 of workbench 20, and namely the upper surface 201 of the relative workbench 20 of comb 404 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.
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 Part I of the lower surface of the first guide rail 401, and the second roller 406 contacts with the described Part I of the lower surface of the second guide rail 402.
Below with reference to Fig. 1-Fig. 4, the course of work according to the powder paving device 40 for 3 D-printing system of the embodiment of the present invention is described.In FIG, powder paving device 40 is positioned at described initial position.When needing to pave the powder 2 on the upper surface 201 of workbench 20, described actuator drives comb 404 to move (moving direction that the arrow Fig. 1 shows comb 404) from described initial position to described final position by sliding part 403.Because the lower edge of comb 404 contacts with the upper surface 201 of workbench 20, therefore the powder 2 on the upper surface 201 of workbench 20 can be paved (powder 2 after paving as shown in Figure 2).
Specifically, 3 D-printing system can comprise formation cylinder, described formation cylinder can comprise cylinder body and can be located at the piston in described cylinder body up or down, 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 have nothing to do, and no longer describe in detail at this.In a concrete example of the present invention, workbench 20 can be provided with the accommodation hole 202 of through 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 the relative workbench 20 of comb 404 is obliquely installed, therefore the distortional stress of comb when scraping irregular surface of comb 404 can greatly be reduced, thus the risk that the comb that can reduce comb 404 expendable distortion occurs or fractures, the process of paving can be enable thus successfully to carry out, can not be interrupted.
And, when paving powder, owing to being located at the first roller 405 on comb 404 and the second roller 406 with the described Part I of the lower surface of the described Part I of the lower surface of the first guide rail 401 and the second guide rail 402 for the plane of reference rolls, and powder 2 can not accumulate on the described Part I of the lower surface of the described Part I of the lower surface of the first guide rail 401 and the second guide rail 402, therefore can ensure the constant of this plane of reference.And when obstacle scraped by comb 404, the first guide rail 401 and the second guide rail 402 produced downward thrust to comb 404, thus ensure that comb 404 can rely on the elastic deformation of comb to surmount obstacles completely.Because this plane of reference can keep constant, therefore comb 404 by overall lifting, thus can not can not cause not having the powder bed in the place of obstacle thickening, and the thickness paving the powder bed obtained namely can be made to be consistent.
The powder paving device 40 for 3 D-printing system according to the embodiment of the present invention passes through comb 404 to be located at sliding part 403 obliquely, thus greatly can reduce the distortional stress of comb when scraping irregular surface of comb 404, and then the risk that the comb that can reduce comb 404 expendable distortion occurs or fractures.And, because the first roller 405 and the second roller 406 are keeping the constant plane of reference moves, the thickness paving the powder bed obtained therefore can be made to 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 calculate shows, comb 404 is less with the angle α of the upper surface 201 of workbench 20, and the maximum stress value of comb when crossing the obstacle of same height of comb 404 is less.Such as, when angle α is 65 degree, when the comb of comb 404 crosses the obstacle of 0.2 millimeter high, maximum stress value suffered by the comb of comb 404 is vertically located at the upper surface 201(of workbench 20 and comb 404 upper surface 201 perpendicular to workbench 20 for comb 404) time maximum stress value suffered by comb 13.4%, when the comb of comb 404 crosses the obstacle of 0.6 millimeter high, the maximum stress value suffered by the comb of comb 404 is 31.8% of the maximum stress value of comb 404 when being vertically located at the upper surface 201 of workbench 20 suffered by comb.
Advantageously, comb 404 can be 45 degree-85 with the angle α of the upper surface 201 of workbench 20 and spends.The maximum stress value when comb that can reduce comb 404 thus further surmounts obstacles, the risk that the comb reducing comb 404 further 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 comb that can reduce comb 404 thus further surmounts obstacles, the risk that the comb reducing comb 404 further 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 the angle α of the upper surface 201 of comb 404 and workbench 20.The structure that can make powder paving device 40 is thus more reasonable, and can improve further and pave effect and pave efficiency, extends the service life of powder paving device 40 further.
Advantageously, 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 contact with comb 404 through screwed hole.The structure of powder paving device 40 can be made thus more reasonable, and more easily, accurately can regulate the size of the angle α of the upper surface 201 of comb 404 and workbench 20.
Mobile in the lateral direction for comb 404 below, describe the process utilizing regulating part 407 to regulate the size of the angle α of the upper surface 201 of 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 pass screwed hole and the left end of regulating part 407 can contact with comb 404.When needing the angle α of the upper surface 201 increasing comb 404 and workbench 20, regulating part 407 can be rotated to make regulating part 407 move right.When needing the angle α of the upper surface 201 reducing comb 404 and workbench 20, regulating part 407 can be rotated to make regulating part 407 be moved to the left.
As Figure 1-Figure 4, in one embodiment of the invention, the powder paving device 40 for 3 D-printing system also comprises the first wedge 408, second wedge 409, first turnover panel 410 and the second turnover panel 411.First wedge 408 can have the first inclined-plane 4081, second wedge 409 can have the second inclined-plane 4091.First turnover panel 410 can be located at the end away from described initial position (such as the right-hand member of the first guide rail 401) of the first guide rail 401 pivotly and the end face away from the first guide rail 401 of the first turnover panel 410 (such as the right side of the first turnover panel 410) can be the 3rd inclined-plane 4101.
Second turnover panel 411 can be located at the end away from described initial position (such as the right-hand member of the second guide rail 402) of the second guide rail 402 pivotly and the end face away from the second guide rail 402 of the second turnover panel 411 (such as the right side 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 paving powder 2, comb 404 moves from described initial position to the end away from described initial position of the end away from described initial position of the first guide rail 401 and the second guide rail 402.
Continue to move to described final position after powder 2 paved by comb 404, after the first roller 405 moves to the first inclined-plane 4081 and the second roller 406 moves to the second inclined-plane 4091, first roller 405 along the first inclined-plane 4081 and the second roller 406 move up along the second inclined-plane 4091, and the first roller 405 can back down the first turnover panel 410 and the second roller 406 can back down the second turnover panel 411(as shown in Figure 2).As shown in Figure 3, when the first roller 405 moves to the upper surface 4082 of the first wedge 408 and the second roller 406 moves to the upper surface 4092 of the second wedge 409, comb 404 is positioned at described final position, and the first turnover panel 410 and the second turnover panel 411 restore to the original state.Now, comb 404 is one segment distance by upwards lifting, and comb 404 no longer contacts with the upper surface 201 of workbench 20.
Then, described actuator can drive comb 404 to move from described final position to described initial position, first roller 405 successively through the upper surface 4102 of upper surface 4082, first turnover panel 410 of the first wedge 408 and upper surface 4013, second roller 406 of the first guide rail 401 successively through the upper surface 4112 of upper surface 4092, second turnover panel 411 of the second wedge 409 and the upper surface 4021 of the second guide rail 402.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 roller of the second guide rail 402, now described initial position got back to by comb 404.
Move if comb 404 carries out backhaul on the upper surface 201 of workbench 20, namely comb 404 moves to described initial position from described final position on the upper surface 201 of workbench 20, then comb 404 easily withstands irregular surface, causes comb 404 to produce large deformation and even fractures.Therefore, by arranging the first turnover panel 410, second turnover panel 411, first wedge 408 and the second wedge 409, thus when comb 404 moving to described initial position from described final position without the need to contacting with the upper surface 201 of workbench 20, can prevent comb 404 from producing large deformation thus and even fractureing.
Advantageously, when the first inclined-plane 4081 can be parallel to the 3rd inclined-plane 4101(first turnover panel 410 not by jack-up), when the second inclined-plane 4091 can be parallel to the 4th inclined-plane 4111(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, first turnover panel 410 of the first wedge 408 can be close to the lower surface of the first guide rail 401.The upper surface 4013 of upper surface 4102, first guide rail 401 of the first turnover panel 410 can be concordant with the upper surface 4082 of the first wedge 408, 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, second turnover panel 411 of the second wedge 409 can be close to the lower surface of the second guide rail 402.The upper surface 4021 of upper surface 4112, second guide rail 402 of the second turnover panel 411 can be concordant with the upper surface 4092 of the second wedge 409, and the lower surface of the second turnover panel 411 can be concordant with the lower surface of the second guide rail 402.The structure that can make powder paving device 40 is thus more reasonable, the first roller 405 and the second roller 406 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 body 4041, first pivotal axis 4042, second pivotal axis 4043, portion 4045 paved by the 3rd pivotal axis 4044 and first.Body 4041 can be located on sliding part 403 obliquely, and body 4041 can contact with regulating part 407.First pivotal axis 4042 can be located on body 4041, and the first pivotal axis 4042 can be rotatably installed on sliding part 403.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.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 multiple first comb 40451 at interval, and the lower edge of each first comb 40451 can contact with the upper surface 201 of workbench 20.The upper surface 201 of the relative workbench 20 of each first comb 40451 is arranged obliquely.The structure of comb 404 can be made thus more reasonable.
First pivotal axis 4042 can be two, and first pivotal axis 4042 can be located on the first side of body 4041, and another first pivotal axis 4042 can be located on 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 portion 4045 and can the upper surface 201 of relative workbench 20 be arranged obliquely.
In an example of the present invention, as shown in Figure 5 and Figure 6, comb 404 can also comprise second and pave portion 4046, the second and pave portion 4046 and can be located on body 4041, and second paves portion 4046 relative first can pave portion 4045 away from described initial position.Particularly, second pave portion 4046 and can be positioned at the right side that first paves portion 4045.Wherein, second paves in portion 4046 and can be provided with multiple second comb 40461 at interval, the lower edge of each second comb 40461 can with the upper surface 201 of workbench 20 spaced a predetermined distance.
By arrange on body 4,041 second pave portion 4046 and the upper surface 201 of the second lower edge paving second comb 40461 in portion 4046 and workbench 20 spaced a predetermined distance, thus second can be utilized to pave portion 4046 first tentatively pave powder 2, namely the thrust of powder 2 can be distributed to first to pave portion 4045 and second and pave in portion 4046, the risk that comb 404 is out of shape can be reduced thus.Concrete and edge, the distance between the lower edge of each second comb 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.The structure of comb 404 can be made thus more reasonable.Body 4041, first is paved portion 4045 and second and is paved portion 4046 and can the upper surface 201 of relative workbench 20 arrange obliquely.Distance between the lower edge of each second comb 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 second comb 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 the good material of elasticity can be adopted to make, and utilizes linear cutter to go out equally spaced groove, to form row first comb 40451 and row second comb 40461.The width of each first comb 40451 can be 1 millimeter, and the width of each second comb 40461 can be 1 millimeter.
First paves the thickness paving portion 4046 in portion 4045 and second can determine according to material, generally at 0.1 millimeter-1 millimeter.Advantageously, first pave portion 4045 and second pave portion 4046 can by spring steel support, the thickness that the first thickness and second paving portion 4045 paves portion 4046 can be 0.4 millimeter.
As shown in Figure 5 and Figure 6, advantageously, second pave portion 4046 and can be parallel to first and pave portion 4045.The structure of comb 404 can be made thus more reasonable.
In a concrete example of the present invention, as shown in Figure 6, the gap 40462 between adjacent two the second comb 40461 can be relative with the first comb 40451 on the moving direction (such as left and right directions) of comb 404.In other words, first pave portion 4045 and second and pave portion 4046 and can stagger and arrange.When second pave portion 4046 scraped powder 2 time, have powder 2 and spill from the gap between adjacent two the second comb 40461.Because this gap is relative with the first comb 40451, therefore the powder 2 spilt can strike off by the first comb 40451, and that can improve powder paving device 40 thus further paves effect.
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, the lower surface of rail portion 4011 and workbench 20 spaced apart in the vertical direction.
Present invention also offers a kind of 3 D-printing system.Workbench 20 and powder paving device is comprised according to the 3 D-printing system of the embodiment of the present invention.Described powder paving device is the powder paving device 40 according to above-described embodiment.Wherein, first guide rail 401 and the second guide rail 402 are located on the upper surface 201 of workbench 20 at interval, the Part I of the Part I of the lower surface of the first guide rail 401 and the lower surface of the second guide rail 402 is all spaced apart in the vertical 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 arranging the powder paving device 40 for 3 D-printing system according to above-described embodiment, thus have pave effective, pave the advantages such as efficiency is high, not fragile, long service life.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents 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:
First guide rail and the second guide rail, described first guide rail and described second guide rail are located on the upper surface of described workbench at interval, and the Part I of the Part I of the lower surface of wherein said first guide rail and the lower surface of described second guide rail is all spaced apart in the vertical 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;
First roller and the second roller, described first roller is located at the first side of described comb, and described second roller is located at the second side of described comb; And
Actuator, described actuator is connected to drive described comb to move between initial position and final position by described sliding part with described sliding part, wherein said comb is when moving from described initial position to described final position, described first roller contacts with the Part I of the lower surface of described first guide rail, and described second roller contacts with the Part I of the lower surface of described 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 to be located on described sliding part and movably with described comb contacts to regulate the size of the 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, it 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;
First pivotal axis, described first pivotal axis is established on the body and is rotatably installed on described sliding part;
Second pivotal axis and the 3rd pivotal axis, described second pivotal axis is located at the first side of described body, described 3rd pivotal axis is located at the second side of described body, described first side is relative with described second side, described first roller is arranged on described second pivotal axis, and described second roller is arranged on described 3rd pivotal axis; With
First paves portion, and described first portion of paving establishes on the body, and described first paves in portion and be provided with multiple first comb at interval, and the lower edge of each described first comb 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 second and paves portion, described second portion of paving establishes on the body, portion is paved away from described initial position by described second portion of paving relatively described first, wherein said second paves in portion and is provided with multiple second comb at interval, and the lower edge of each described second comb and the upper surface of described workbench are spaced a predetermined distance.
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 second comb is relative with described first comb 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 comprise:
First wedge and the second wedge, described first wedge has the first inclined-plane, and described second wedge has the second inclined-plane; And
First turnover panel and the second turnover panel, described first turnover panel is located at the end away from described initial position of described first guide rail pivotly and the end face away from described first guide rail of described first turnover panel is the 3rd inclined-plane, described second turnover panel is located at the end away from described initial position of described second guide rail pivotly and the end face away from described second guide rail of described second turnover panel is the 4th inclined-plane, described 3rd inclined-plane is supported on described first inclined-plane, and described 4th inclined-plane is supported on described 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 first guide rail of upper surface of described first turnover panel and the upper surface of described first wedge, the lower surface of contiguous described first guide rail of lower surface of described first turnover panel, the upper surface of wherein said first turnover panel, the upper surface of described first guide rail are concordant with the upper surface of described first wedge, the lower surface of described first turnover panel is concordant with the lower surface of described first guide rail
The contiguous upper surface of described second guide rail of upper surface of described second turnover panel and the upper surface of described second wedge, the lower surface of contiguous described second guide rail of lower surface of described second turnover panel, the upper surface of described second turnover panel, the upper surface of described second guide rail are concordant with the upper surface of described second wedge, and the lower surface of described second turnover panel is concordant with the lower surface of described 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 and spends.
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, described regulating part threaded engagement in described screwed hole, the end of described regulating part through described screwed hole and with described comb contacts.
11. 1 kinds of 3 D-printing systems, is characterized in that, comprising:
Workbench; With
Powder paving device, described powder paving device is the powder paving device for 3 D-printing system according to any one of claim 1-10, wherein said first guide rail and described second guide rail are located on the upper surface of described workbench at interval, the Part I of the Part I of the lower surface of described first guide rail and the lower surface of described second guide rail is all spaced apart in the vertical direction with described workbench, and the lower edge of described comb contacts with the upper surface of described workbench.
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| CN104828589B (en) * | 2015-05-06 | 2017-12-12 | 苏州秉创科技有限公司 | A kind of double rollers feed mechanism |
| DE102016203582A1 (en) * | 2016-03-04 | 2017-09-07 | Airbus Operations Gmbh | Additive manufacturing system and process for additive manufacturing of components |
| EP3433074B1 (en) * | 2016-08-31 | 2021-08-11 | Hewlett-Packard Development Company, L.P. | Three-dimensional printing |
| CN112659315B (en) * | 2020-12-17 | 2022-07-19 | 扬州大学 | Laying device and process for forming photocuring ceramic |
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