CN204366039U - A kind of material that increases manufactures two roller ladder power spreading device - Google Patents
A kind of material that increases manufactures two roller ladder power spreading device Download PDFInfo
- Publication number
- CN204366039U CN204366039U CN201420842811.1U CN201420842811U CN204366039U CN 204366039 U CN204366039 U CN 204366039U CN 201420842811 U CN201420842811 U CN 201420842811U CN 204366039 U CN204366039 U CN 204366039U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
The utility model relates to a kind of increasing material for quick shaping process and manufactures two roller ladder power spreading device, there are two and under driven by motor, front and back can be done to the fixed mount be synchronized with the movement along a respective carter respectively according on moulding cylinder dual-side along the track arranged and two pieces, between two fixed mounts by the support of bearing respectively frame powder-laying roller after a front powder-laying roller and is housed, wherein front powder-laying roller bottom surface nadir is greater than the height of rear powder-laying roller bottom surface nadir apart from moulding cylinder upper surface apart from the height of moulding cylinder upper surface.In practical application, this device is when once spreading powder, front powder-laying roller once slightly spreads powder, and blow off by powder compacting and by unnecessary powder, then after, powder-laying roller carries out secondary to the powder face paving compacting again and carefully spreads, by powder compacting again, thus the compactibility of paving powder and flatness are increased greatly.
Description
Technical field
The utility model belongs to forming parts manufacturing technology field, relates to a kind of increasing material that can be used for the quick shaping process such as selective laser sintering, 3D-Print and manufactures two roller ladder power spreading device.
Background technology
Along with the development of science and technology, the method for powder compacting part is varied, and wherein selective laser sintering and moulding increases material to manufacture the comparatively ripe a kind of forming method in field.The principle of this forming method is: according to the cad model data of part, adopts the scanning moulding powder of laser selective, powder smelting is bondd and successively superposes shaping, thus being processed to form the part (profiled member) with geometry in particular.Above-mentioned technique powder mostly have employed the powder addition manner that fore-put powder and powder pave sequencing.
In prior art, known selective laser sintering rapid forming fore-put powder mode forming process mainly adopts following steps: after powder cylinder moves unit distance, utilize power spreading device evenly will pave at moulding cylinder upper surface for powder cylinder powder, afterwards under control of the computer, according to each layer cross section information of part, by laser, selective sintering is carried out to moulding cylinder powder, make dusty material melt bonding and curing molding, so obtain the cross sectional shape of individual layer; Make the platform for making in moulding cylinder move down a thickness unit again, carry out lower one deck paving powder, sintering; So move in circles until whole part shaping.
For the part of selective laser sintering and moulding, its index mainly contains density, precision and surface roughness, and the quality of density and surface roughness is closely related with paving powder.If paving powder is uneven, then powder is unstable to laser energy absorption, and molded surface quality is just poor, and second layer paving powder also can be uneven simultaneously, so can cause accumulated error.If paving powder not consolidation, then easily cause selective laser sintering after-contraction comparatively large, part strength is lower, affects surface quality.
At present, the paving powder mode being applied to selective laser sintering mainly uses rigid rotating roller and/or blade structure.Use blade structure, although can ensure that paving powder is smooth, scraper plate is only limitted to shakeouing powder, there is no compaction, and paving powder density is lower.Patent publication No be CN201581131U " a kind of power spreading device being easy to compress preset metal dust " though in have employed the structure that scraper plate and pressing plate combine, only the curvature end face of pressured plate is still difficult to powder compacting.Powder-laying roller paving powder compactibility is relatively better, but existing power spreading device is single roll structure, during due to former confession powder, for ensureing every layer of enough powder, each powder amount that supplies all is greater than aequum, like this when unnecessary powder, single powder-laying roller is used once just to be difficult to powder-compacting, and in single powder-laying roller paving powder moving process, unnecessary powder can move forward thereupon, accumulation, finally too much powder will flow to working face both sides because of accumulation, powder is caused to waste, be unfavorable for collecting, and be easy to powder-laying roller clogging occurs, impact paving powder surface quality.Thus, this area need badly at present want a kind of can when for powder once realize the smooth and paving powder power spreading device closely of paving powder.
Utility model content
The purpose of this utility model is that the shortcoming overcoming existing power spreading device is with not enough, provides a kind of simple and reasonable, easy to operate, that paving powder mass effect is good increasing material to manufacture two roller ladder power spreading device.
The purpose of this utility model is achieved through the following technical solutions:
A kind of material that increases manufactures two roller ladder power spreading device, there are two and under driven by motor, front and back can be done to the fixed mount be synchronized with the movement along a respective carter respectively according on moulding cylinder dual-side along the track arranged and two pieces, between two fixed mounts by the support of bearing respectively frame powder-laying roller after a front powder-laying roller and is housed, wherein front powder-laying roller bottom surface nadir is greater than the height of rear powder-laying roller bottom surface nadir apart from moulding cylinder upper surface apart from the height of moulding cylinder upper surface.
Above-mentioned increasing material manufactures in two roller ladder power spreading device, and front powder-laying roller bottom surface nadir is 0.02mm ~ 5mm apart from the height of moulding cylinder upper surface, and rear powder-laying roller bottom surface nadir is 0.01mm ~ 0.05mm apart from the height of moulding cylinder upper surface.
Above-mentioned increasing material manufactures in two roller ladder power spreading device, and the end face diameter of front powder-laying roller is preferably 25mm ~ 50mm, and the end face diameter of rear powder-laying roller is preferably 20mm ~ 40mm.
Above-mentioned increasing material manufactures in two roller ladder power spreading device, and front powder-laying roller and rear powder-laying roller can individually be driven by a motor, or are driven by same motor after being connected by transmission device.
Above-mentioned increasing material manufactures in two roller ladder power spreading device, and fixed mount is provided with the motor that after driving, powder-laying roller rotates.
Above-mentioned increasing material manufactures in two roller ladder power spreading device, fixed mount being provided with the two roller bottoms difference in height governor motion for regulating front powder-laying roller height, by difference in height governor motion, two powder-laying roller bottom surface nadir differences in height being adjusted to 0.01mm ~ 0.05mm.
Above-mentioned increasing material manufactures in two roller ladder power spreading device, described two roller bottoms difference in height governor motion has the rectangular opening that is opened powder-laying roller support of bearing position of going forward in fixed mount, vertical guide is provided with in the both sides of rectangular opening, front powder-laying roller support of bearing both sides are provided with the slide block that can move up and down along guide rail, to between rectangular opening lower opening face, fastening spring is housed at the front powder-laying roller support of bearing, be provided with adjusting screw in the upper end of the front powder-laying roller support of bearing, described adjusting screw by penetrate above fixed mount in rectangular opening and overhead on the top of the front powder-laying roller support of bearing.
Above-mentioned increasing material manufactures in two roller ladder power spreading device, the material of front powder-laying roller and rear powder-laying roller is the high-strength material that martensitic stain less steel, H13 stainless steel or wolfram steel etc. not easily glue powder, or adopt at ordinary steel surface coating non-sticking lining, as the non-viscous paint such as Teflon, polytetrafluoroethylene (PTFE) layer, to ensure that powder not easily adheres in paving powder process, its service life can not be affected because of friction, ensure its service life and quality.
The course of work of the present utility model is such: fixed mount motor starts rear drive fixed mount along the orbital motion of moulding cylinder both sides, and then drives front powder-laying roller and the motion of rear powder-laying roller, front powder-laying roller and rear powder-laying roller promote powder to moulding cylinder, when before rear powder-laying roller, amount of powder is too much, easy accumulation, obstruction roller moves, and the powder surface portion of paving and the moulding cylinder both sides of roller back can be overflowed to, cause and spread powder surface breakdown, cause powder to be wasted and affect paving powder effect, the utility model arranges the effect of former and later two powder-laying rollers above moulding cylinder is for this reason exactly under the effect of front powder-laying roller, powder slightly spreads by first time, compacting flattens, and unnecessary powder is blown off, the powder now paved has certain compactibility, after utilizing subsequently, powder-laying roller carries out secondary compaction to the powder paved and paves.The height in rear powder-laying roller perigee distance paving powder face is less than the height of front powder-laying roller, and the difference in height between the two determines the consolidation degree of paving powder.In concrete enforcement, above-mentioned difference in height is not easily too large, otherwise can will cause the increase of powder consumption, and causes powder accumulation in rear powder-laying roller paving powder process.
Compared with prior art, the utility model tool has the following advantages;
One, former and later two powder-laying rollers are provided with in the utility model device, and there is between the two certain difference in height, when once spreading powder, front powder-laying roller once slightly spreads powder, and blow off by powder compacting and by unnecessary powder, thereafter rear powder-laying roller carries out secondary to the powder face paving compacting again and carefully spreads, and with by powder compacting again, the compactibility of paving powder and flatness is increased greatly, once supply powder, twice ladder paving powder, powder waste is few, and paving powder is effective;
Two, before and after the utility model, the difference in height of powder-laying roller can regulate (the front position of the powder-laying roller support of bearing on fixed mount is adjustable) by the mobile of the front powder-laying roller support of bearing, its large I adjusts according to technological requirement, specifically by size pattern, the fluidity determining of powder particle, when powder is thinner, difference in height is less, when powder is thicker, difference in height is comparatively large, adapts to the requirement of different dusty material paving powder with this;
Three, before the utility model, powder-laying roller end face diameter is comparatively large, and when can make slightly to press, more powder is compacted, and then powder-laying roller end face diameter is less, and during thin pressure, consolidation effect is good;
Four, the utility model moves ahead by driven by motor fixed mount, so before and after driving powder-laying roller to promote powder surperficial to moulding cylinder, and realize powder pave compacting, there is operating efficiency high, the plurality of advantages such as to pave and consolidation effect is good;
Five, front and back of the present utility model powder-laying roller all adopts high-strength material to make, and makes this device in use can not reduce service life because of friction.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model specific embodiment.
Fig. 2 is the operation principle schematic diagram of forward and backward powder-laying roller.
Fig. 3 is the structural representation of two roller bottoms difference in height governor motion.
In figure, each label title respectively: powder-laying roller before 1-, powder-laying roller after 2-, 3-fixed mount, 4-track, 5-moulding cylinder, the powder-laying roller support of bearing before 6-, the powder-laying roller support of bearing after 7-, 8-motor, 9-powder, 10-leading screw, 11-fastening spring, 12-vertical guide.
Detailed description of the invention
Embodiment 1
Fig. 1-Fig. 2 shows the concrete structure schematic diagram of the present embodiment.As shown in Figure 1, the two roller ladder power spreading device of this increasing material manufacture comprises front powder-laying roller 1, rear powder-laying roller 2 and fixed mount 3, and front powder-laying roller 1, rear powder-laying roller 2 are fixed on fixed mount 3 respectively by the front powder-laying roller support of bearing 6, the rear powder-laying roller support of bearing 7.As shown in Figure 2, described front powder-laying roller 1 is provided with certain difference in height with rear powder-laying roller 2, and described front powder-laying roller 1 bottom surface nadir is not less than the bottom surface nadir of rear powder-laying roller 2, between the two, difference in height is 0.15mm, the external drive motors of described fixed mount (external motor does not draw in the drawings).
In structure shown in Fig. 1, front powder-laying roller 1 drives without motor, and rear powder-laying roller 2 has motor to drive, and its rolling speed is adjustable.
In the present embodiment, the height of perigee distance moulding cylinder 5 upper surface of front powder-laying roller 1 is fixed as 0.17mm, and it is highly non-adjustable, and the height of rear powder-laying roller 2 perigee distance cylinder 5 upper surface is 0.02mm, highly fixes non-adjustable.The end face diameter of front powder-laying roller 1 is 30mm, and the end face diameter of rear powder-laying roller 2 is 20mm.The material of front powder-laying roller 1 and rear powder-laying roller 2 is stainless steel martensite.
The action principle of the present embodiment is: external motor drives fixed mount 3 to travel forward along track 4 on moulding cylinder 5 surface, and drives front powder-laying roller 1 and rear powder-laying roller 2 to move forward, and simultaneously, powder-laying roller rolls under the drive of motor 8; Front powder-laying roller 1 rolls under fixed mount reach thrust, as shown in Figure 2, powder 9 is pushed into moulding cylinder 5 surface by front powder-laying roller 1 and rear powder-laying roller 2, powder 9 slightly spreads by front powder-laying roller 1 first time, compacting flattens, and unnecessary powder 9 is pushed away away, the powder now paved has certain compactibility, then by rear powder-laying roller 2, the powder paved is carried out to secondary compaction and paves again, and final formation spreads powder surface.
Embodiment 2
The present embodiment except following characteristics all the other contents with embodiment 1: front powder-laying roller 1 end face diameter is 40mm, rear powder-laying roller end face diameter is 30mm, described difference in height is 0.20mm, described front powder-laying roller 1 perigee distance moulding cylinder 5 surface distance is 0.25mm, and described rear powder-laying roller perigee distance moulding cylinder 5 surface distance is 0.05mm.
Described front powder-laying roller 1 is H13 tool steel or wolfram steel with rear powder-laying roller 2 material.
Embodiment 3
The present embodiment except following characteristics all the other contents with embodiment 2: front powder-laying roller 1 drives by separate electrical motor or by rear powder-laying roller 2 drive motors 8, its roller moves speed and regulates by motor speed, and fixed mount 3 is provided with the two roller bottoms difference in height governor motion for regulating front powder-laying roller 1 height.
The structure of two roller bottoms difference in height governor motion set in the present embodiment as shown in Figure 3, it has the rectangular opening that is opened powder-laying roller support of bearing position of going forward in fixed mount 3, vertical guide 12 is provided with in the both sides of rectangular opening, the front powder-laying roller support of bearing 6 both sides are provided with the slide block that can move up and down along guide rail, between the front powder-laying roller support of bearing 6 to rectangular opening lower opening face, fastening spring 11 is housed, adjusting screw 10 is provided with in the upper end of the front powder-laying roller support of bearing 6, described adjusting screw 10 by penetrate above fixed mount 3 in rectangular opening and overhead on the top of the front powder-laying roller support of bearing 6.In the present embodiment structure, the height of the rear powder-laying roller support of bearing 7 on fixed mount 3 is non-adjustable, the height of the front powder-laying roller support of bearing 6 regulates by the movement of this support of bearing in vertical guide 12, the front powder-laying roller support of bearing 6 lower end has fastening spring 11 to retrain, upper end has leading screw 10 to retrain, move in vertical guide 10 by the powder-laying roller support of bearing 6 before the rotary actuation of leading screw, and then the difference in height described in regulating, difference in height regulates optimized scope to be 0.01mm ~ 0.5mm.
The mode that difference in height regulates is not limited to this, also regulates by other form.
The above embodiments are the utility model preferably embodiment; but practical application mode of the present utility model is not by the restriction of the various embodiments described above; the change done under other any does not run counter to Spirit Essence of the present utility model and principle, modification, substitute, combine, simplify, all should be considered as the substitute mode of equivalence, be included within protection domain of the present utility model.
Claims (7)
1. one kind increases the two roller ladder power spreading device of material manufacture, it is characterized in that: there are two and under driven by motor, front and back can be done to the fixed mount be synchronized with the movement (3) along a respective carter respectively according on moulding cylinder (5) dual-side along the track (4) arranged and two pieces, by the support of bearing (6 between two fixed mounts (3), 7) frame is equipped with powder-laying roller (2) after a front powder-laying roller (1) and respectively, wherein front powder-laying roller (1) bottom surface nadir is greater than the height of rear powder-laying roller (2) bottom surface nadir apart from moulding cylinder (5) upper surface apart from the height of moulding cylinder (5) upper surface.
2. increasing material according to claim 1 manufactures two roller ladder power spreading device, it is characterized in that: front powder-laying roller (1) bottom surface nadir is 0.02mm ~ 5mm apart from the height of moulding cylinder (5) upper surface, rear powder-laying roller (2) bottom surface nadir is 0.01mm ~ 0.05mm apart from the height of moulding cylinder (5) upper surface.
3. increasing material according to claim 1 and 2 manufactures two roller ladder power spreading device, and it is characterized in that: the end face diameter of front powder-laying roller (1) is 25mm ~ 50mm, the end face diameter of rear powder-laying roller (2) is 20mm ~ 40mm.
4. increasing material according to claim 1 manufactures two roller ladder power spreading device, it is characterized in that: described front powder-laying roller (1) and rear powder-laying roller (1) can individually be driven by a motor, or are driven by same motor after being connected by transmission device.
5. increasing material according to claim 1 manufactures two roller ladder power spreading device, it is characterized in that: on fixed mount (3), be provided with the motor (8) that after driving, powder-laying roller (2) rotates.
6. increasing material according to claim 1 manufactures two roller ladder power spreading device, it is characterized in that: on fixed mount (3), being provided with the two roller bottoms difference in height governor motion for regulating front powder-laying roller (1) height, by difference in height governor motion, two powder-laying roller bottom surface nadir differences in height being adjusted to 0.01mm ~ 0.05mm.
7. increasing material according to claim 6 manufactures two roller ladder power spreading device, it is characterized in that: described two roller bottoms difference in height governor motion has the rectangular opening that is opened powder-laying roller support of bearing position of going forward in fixed mount (3), vertical guide (12) is provided with in the both sides of rectangular opening, the front powder-laying roller support of bearing (6) both sides are provided with the slide block that can move up and down along guide rail, between the front powder-laying roller support of bearing (6) to rectangular opening lower opening face, fastening spring (11) is housed, adjusting screw (10) is provided with in the upper end of the front powder-laying roller support of bearing (6), described adjusting screw (10) penetrates the interior also overhead of rectangular opening on the top of the front powder-laying roller support of bearing (6) by fixed mount (3) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420842811.1U CN204366039U (en) | 2014-12-25 | 2014-12-25 | A kind of material that increases manufactures two roller ladder power spreading device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420842811.1U CN204366039U (en) | 2014-12-25 | 2014-12-25 | A kind of material that increases manufactures two roller ladder power spreading device |
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| CN204366039U true CN204366039U (en) | 2015-06-03 |
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| CN201420842811.1U Expired - Fee Related CN204366039U (en) | 2014-12-25 | 2014-12-25 | A kind of material that increases manufactures two roller ladder power spreading device |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105436501A (en) * | 2016-01-08 | 2016-03-30 | 江苏永年激光成形技术有限公司 | SLM scraper with compaction function |
| CN105499571A (en) * | 2015-12-31 | 2016-04-20 | 西安交通大学 | Dynamically-adjustable flexible powder spreading device for selective laser melting system |
| CN106475562A (en) * | 2016-11-22 | 2017-03-08 | 上海航天精密机械研究所 | A kind of double scraper power spreading device of increasing material manufacturing attritive powder and its method |
| CN107771109A (en) * | 2015-06-19 | 2018-03-06 | 应用材料公司 | Material distribution and compaction in additive manufacturing |
| CN109604601A (en) * | 2019-01-21 | 2019-04-12 | 福建慧思通三维技术有限公司 | A kind of metal 3D printer for making energy source with twin-laser |
| CN109759579A (en) * | 2019-02-19 | 2019-05-17 | 南通理工学院 | Three-dimensional printing rapid forming method of metal matrix composite powder |
| CN111842891A (en) * | 2020-06-30 | 2020-10-30 | 华中科技大学 | Device for improving powder paving quality in metal powder bed additive manufacturing process |
| WO2020237143A1 (en) * | 2019-05-23 | 2020-11-26 | General Electric Company | Recoat assemblies for additive manufacturing systems and methods for using the same |
| CN112705731A (en) * | 2020-12-22 | 2021-04-27 | 西安交通大学 | Multi-material additive manufacturing and forming system and method |
| CN112809398A (en) * | 2020-08-18 | 2021-05-18 | 连灿鑫 | Material increasing and decreasing combined machining center |
| CN113510926A (en) * | 2020-12-09 | 2021-10-19 | 安徽工程大学 | SLM powder compaction and powder paving device |
| CN115121814A (en) * | 2022-07-11 | 2022-09-30 | 内蒙古工业大学 | Automatic powder paving device |
| US12042988B2 (en) | 2019-05-23 | 2024-07-23 | General Electric Company | Additive manufacturing apparatuses and methods |
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| CN107771109A (en) * | 2015-06-19 | 2018-03-06 | 应用材料公司 | Material distribution and compaction in additive manufacturing |
| US10780497B2 (en) | 2015-06-19 | 2020-09-22 | Applied Materials, Inc. | Material dispensing and compaction in additive manufacturing |
| CN105499571A (en) * | 2015-12-31 | 2016-04-20 | 西安交通大学 | Dynamically-adjustable flexible powder spreading device for selective laser melting system |
| CN105436501A (en) * | 2016-01-08 | 2016-03-30 | 江苏永年激光成形技术有限公司 | SLM scraper with compaction function |
| CN105436501B (en) * | 2016-01-08 | 2017-10-03 | 江苏永年激光成形技术有限公司 | SLM band compacting functions scraper plates |
| CN106475562A (en) * | 2016-11-22 | 2017-03-08 | 上海航天精密机械研究所 | A kind of double scraper power spreading device of increasing material manufacturing attritive powder and its method |
| CN106475562B (en) * | 2016-11-22 | 2018-05-15 | 上海航天精密机械研究所 | A kind of double scraper power spreading devices of increasing material manufacturing attritive powder and its method |
| CN109604601A (en) * | 2019-01-21 | 2019-04-12 | 福建慧思通三维技术有限公司 | A kind of metal 3D printer for making energy source with twin-laser |
| CN109759579A (en) * | 2019-02-19 | 2019-05-17 | 南通理工学院 | Three-dimensional printing rapid forming method of metal matrix composite powder |
| WO2020237143A1 (en) * | 2019-05-23 | 2020-11-26 | General Electric Company | Recoat assemblies for additive manufacturing systems and methods for using the same |
| US12042988B2 (en) | 2019-05-23 | 2024-07-23 | General Electric Company | Additive manufacturing apparatuses and methods |
| US12097709B2 (en) | 2019-05-23 | 2024-09-24 | General Electric Company | Cleaning fluids for use in additive manufacturing apparatuses and methods for monitoring status and performance of the same |
| US12076918B2 (en) | 2019-05-23 | 2024-09-03 | General Electric Company | Additive manufacturing apparatuses and methods for using the same |
| US12059841B2 (en) | 2019-05-23 | 2024-08-13 | General Electric Company | Additive manufacturing recoat assemblies including sensors and methods for using the same |
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| JP2022532714A (en) * | 2019-05-23 | 2022-07-19 | ゼネラル・エレクトリック・カンパニイ | Object formation method |
| CN111842891B (en) * | 2020-06-30 | 2021-11-19 | 华中科技大学 | Device for improving powder paving quality in metal powder bed additive manufacturing process |
| CN111842891A (en) * | 2020-06-30 | 2020-10-30 | 华中科技大学 | Device for improving powder paving quality in metal powder bed additive manufacturing process |
| CN112809398A (en) * | 2020-08-18 | 2021-05-18 | 连灿鑫 | Material increasing and decreasing combined machining center |
| CN113510926A (en) * | 2020-12-09 | 2021-10-19 | 安徽工程大学 | SLM powder compaction and powder paving device |
| CN112705731A (en) * | 2020-12-22 | 2021-04-27 | 西安交通大学 | Multi-material additive manufacturing and forming system and method |
| CN115121814A (en) * | 2022-07-11 | 2022-09-30 | 内蒙古工业大学 | Automatic powder paving device |
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