CN103447528B - Selective Laser melting foldable for easy replacement shaped molding apparatus - Google Patents

Selective Laser melting foldable for easy replacement shaped molding apparatus Download PDF

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CN103447528B
CN103447528B CN201310320681.5A CN201310320681A CN103447528B CN 103447528 B CN103447528 B CN 103447528B CN 201310320681 A CN201310320681 A CN 201310320681A CN 103447528 B CN103447528 B CN 103447528B
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forming
plate
selective laser
telescopic cover
molding apparatus
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CN201310320681.5A
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Chinese (zh)
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CN103447528A (en
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张安峰
李涤尘
侍行坤
杨洪涛
张海洋
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西安交通大学
西安瑞特快速制造工程研究有限公司
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Abstract

本发明公开了一种用于激光选区熔化成形的可折叠易更换成形装置,其特征在于,包括成形基板、底板、从下往上逐渐缩小的伸缩罩,成形基板固定在底板上,伸缩罩下端固定在底板周边,底板通过下夹紧件与电动推杆上板相连;伸缩罩上端通过上夹紧件和成形面的下表面相连。 The present invention discloses a method for forming a foldable Selective Laser melting molding apparatus easy to replace, wherein the substrate comprises a shaped, plate, tapers upwards from the bottom of the telescopic cover, molded substrate is fixed on the base plate, the lower end of the telescopic cover an electric push rod fixedly connected to the plate by a clamping member at the periphery of the bottom plate, the bottom plate; telescopically connected to the lower surface of the end cover on the clamping member and the forming surface. 成形过程结束之后,只须将该装置取出即可把零件取出和清除剩余粉末。 After the forming process, the only means to remove the parts and removal of excess powder removed.

Description

用于激光选区熔化成形的可折叠易更换成形装置 Selective Laser melting foldable for easy replacement shaped molding apparatus

技术领域 FIELD

[0001] 本发明涉及3D打印激光选区熔化快速成形技术,特别涉及一种用于金属和非金属激光选区熔化成形装置。 [0001] The present invention relates to 3D printing, selective laser melting apparatus of rapid prototyping technology, particularly relates to a method for selective laser melting of metal and non-metal molding.

背景技术 Background technique

[0002] 激光选区恪化成形(Selective Laser Melting, SLM)技术一种能够直接成形金属零件的快速成形技术,是3D打印快速成形的主要形式之一。 [0002] Selective Laser molding of Verified (Selective Laser Melting, SLM) technology for rapid prototyping technology capable of directly forming metal parts, 3D printing is one of the major forms of rapid prototyping. 该技术的原理见图1所示。 The principle of this technique is shown in Figure 1. 工控机根据经过切片处理的CAD模型信息控制振镜选区扫描,被扫描到的金属粉末熔化粘接在一起,一层扫描完,送料缸上升一层(成形缸相应的下降一层)、刮板(或辊子)在成形面铺上一层粉末,然后进行下一层的扫描熔化,这样一层接一层成形出最终零件。 IPC control galvanometer scanning selection information after slicing the CAD model of the process, is scanned into the metal powder melts bonded together, one layer scanned, rising one feed cylinder (cylinder shaped corresponding one drop), the blade (or rollers) in the forming surface covered with a layer of powder, and then scanning the next layer is melted, so that the final layer by layer shaped parts. 由于每层没熔化的粉末支撑着倾斜(甚至悬空)的零件部分,因此可以直接制造出传统加工方法根本无法制造出的复杂金属零件,而且成形的零件有很好的力学性能,正因为如此,此项工艺在航空航天和生物医疗等方面应用越来越广泛。 Since each layer is not melted powder supporting part portion inclined (or even floating), it can be directly manufactured a conventional machining methods can not produce complex metal parts, and the shaped part has good mechanical properties, and as such, this biological processes in the aerospace and medical care, more and more widely.

[0003] SLM工艺因为采用的是扫描振镜来控制激光扫描路径,速度可以达到3_5m/s,因此其成形效率比较高,但是零件成形完、剩余粉末的清理却要花费很长时间,因为成形过程中,成形面上会或多或少的残留一些金属粉末,在成形缸里除了成形好的零件外,其他空间都充满着未熔化的金属粉末。 [0003] SLM process because the use of controls the laser scanning mirror scan path, the speed can reach 3_5m / s, which is shaped so more efficient, but the finished molded parts, have to clean up the remaining powder takes a long time, because the forming process, the forming surface will be more or less some residual metal powder, in addition to forming good shaped tank parts, the other space is filled with a metal powder unmelted. 这些粒度只有几十个微米大小的粉末想要清理干净并不容易,如果采用吸尘器吸,那么既费时又费力,而且吸进去的粉末因为是金属的,很容易把吸尘器的电机损坏;而如果采用人手工用清粉的刷子清理,细小的粉末移动时会形成粉尘,严重损害操作人员的身体健康,不利于设备的长期使用,消耗大量的辅助时间,不符合现代工业上的高效、环保、人性化理念。 The particle size of only a few dozen microns in size desired powder is not easy to clean, if a vacuum cleaner, the time-consuming and laborious, but also because it is sucked into the metal powder, it is easy to damage the vacuum cleaner motor; and if people by hand with a brush clear powder cleaning, fine powder form dust when moving, serious damage to the health of operators is not conducive to long-term use of equipment, consume large amounts of auxiliary time, does not meet the high efficiency, environmental protection, human in the modern industry of the concept. 如何很好的解决激光选区熔化粉末的清理回收在某种意义上也决定着SLM设备工艺在市场上的推广和工业上大规模的应用。 How good solution Selective Laser melting powder emptying of recycling in a sense, also determines the large-scale application on the SLM process equipment in the market and industry promotion.

[0004] 目前,国外的SLM设备像德国EOS的EOSINT M280,英国MCP公司的FS-RealizersuiMachine等皆采用特制的防爆吸尘器来回收成形的剩余粉末,这种特制的吸尘器目前国内还没有同类产品。 [0004] At present, foreign SLM devices like the EOS EOSINT M280 Germany, UK MCP's FS-RealizersuiMachine mused the use of special explosion-proof vacuum cleaner to recover the remaining powder forming of this special cleaners Currently no similar products.

[0005] 在实际生产中,如果能有更好的方式来回收成形粉末,省去吸尘器这个环节,势必会提高设备整体效率,更利于工作人员的健康,从而提高设备的竞争优势,从长远来看,也能更好的推动激光选区熔化技术的进一步发展和应用。 [0005] In actual production, if there is a better way to recover forming powder, eliminating the need for vacuum cleaners this link, is bound to improve the overall efficiency of the device, more conducive to the health of staff, thereby enhancing the competitive advantage of the device, in the long run look, can better promote the selective laser melting further development and application of technology.

发明内容 SUMMARY

[0006] 为了解决现有SLM设备粉末回收耗时、耗力、效果不好的难题,本发明的目的在于提供一种用于激光选区熔化成形的成形装置,该成形装置可以随着电动推杆的升降而伸缩,从而更方便的回收、清除剩余粉末。 [0006] In order to solve the conventional SLM powder recovery apparatus consuming, labor-intensive, not the effect of the problem, an object of the present invention is to provide a molding apparatus for selective laser melting molding, the molding apparatus with an electric push rod may lifting and stretching, making it easier to recover, remove excess powder.

[0007] 为了达到以上目的,本发明是采取如下技术方案予以实现的: [0007] To achieve the above object, the present invention is taken to be implemented in the following technical solutions:

[0008] 一种用于激光选区熔化成形的可折叠易更换成形装置,其特征在于,包括成形基板、底板、从下往上逐渐缩小的伸缩罩,成形基板固定在底板上,伸缩罩下端固定在底板周边,底板通过下夹紧件与电动推杆上板相连;伸缩罩上端通过上夹紧件和成形面的下表面相连。 [0008] A method for forming a foldable Selective Laser melting molding apparatus easy to replace, wherein the substrate comprises a shaped, plate, tapers upwards from the bottom of the telescopic cover, molded substrate is fixed on the base plate fixed to the lower end of the telescopic cover in the periphery of the bottom plate, the bottom plate is connected to an electric push rod through the clamp plate; end of the telescopic cover are connected by the lower surface of the clamping member and the forming surface.

[0009] 上述方案中,所述的伸缩罩包括多个套在一起的环圈,径向最内侧环圈上端连接成形面下表面;径向最外侧环圈下端固定在底板周边,各环圈轴向伸长后通过相反的“L”周边连接。 [0009] In the above embodiment, the cover includes a plurality of telescoping sleeve ring together, the upper end of the radially innermost ring connected to the lower surface of the forming surface; a lower end fixed to the radially outermost ring surrounding the base plate, each collar the axially elongated "L" by an opposite peripheral connection.

[0010] 所述底板和成形基板的轴向总高度不高于伸缩罩在压缩的状态下的总高度。 [0010] The overall axial height of the base and forming the substrate is not higher than the total height of the telescopic cover in a compressed state.

[0011] 与传统的方法(成形过程粉末直接落到成形缸中)相比,本发明的优点是: [0011] with the conventional method (powder fall directly forming process forming cylinder) compared to the advantages of the present invention are:

[0012] 1、成形过程中剩余的粉末都落在可折叠更换的粉末成形装置中,随着底板的下降逐渐伸展,每铺一层金属粉末都会落到伸缩罩内。 [0012] 1, the process of forming the remaining powder fall foldable replacement powder forming apparatus, with the decline of the base plate gradually extended, are each a layer of a metal powder falls within the telescopic cover. 成形结束后,只需将该装置取出即可将粉末回收,操作相当方便 After the end of molding, only the powder recovery apparatus to be taken out, the operation is quite easy

[0013] 2、由于成形面上不残留粉末,而每层剩余的粉末又都在伸缩罩中,因此成形结束后,不需要采用额外的设备来清理设备中剩余的粉末,省去了人工烦躁的清扫操作过程,很大程度上提高了工作人员的劳动环境。 [0013] 2, since the powder does not remain on the forming surface, and each remaining powder in the telescopic cover and thus the end of the molding, does not require use of additional equipment to clean the powder remaining in the device, eliminating the need for artificial irritability the process of cleaning operation, greatly improve the working environment of staff.

[0014] 3、大大缩短了粉末清理、粉末回收的时间,提高了设备的整体成形效率,提高了设备在市场上的竞争力。 [0014] 3, greatly reducing the cleaning powder, powder recovery time, improve the overall efficiency of the forming apparatus, the device improve the competitiveness in the market.

[0015] 本发明适用于3D打印快速成形领域,目标是解决激光选区熔化设备上存在的成形粉末回收、清理不方便的难题。 [0015] The present invention is applicable to the field of 3D printing, rapid prototyping, molding powder recovery goal is to solve the presence of the selective laser melting apparatus, cleaning inconvenient problem. 节省了粉末清理时间,提高了成形机的利用率。 Saves time cleaning powder, improve the utilization of the forming machine.

附图说明 BRIEF DESCRIPTION

[0016] 以下结合附图及具体实施方式对本发明作进一步的详细说明。 [0016] Hereinafter, the present invention will be further described in detail in conjunction with accompanying drawings and specific embodiments.

[0017] 图1是激光选区熔化设备原理示意图。 [0017] FIG. 1 is a schematic view of the principle of selective laser melting apparatus.

[0018] 图2是本发明装置的结构示意图。 [0018] FIG. 2 is a schematic view of the apparatus of the present invention. 图中:1.成形基面,2.压紧件,3.缸体,4.伸缩罩,5.底板,6.压紧件,7.成形基板,8.电动推杆。 FIG: forming a base surface, the pressing member 2, the cylinder 3, the telescopic cover 4, the bottom plate 5, the pressing member 6, 7 forming a substrate, an electric push rod 8........

[0019] 图3是图2成形装置压缩状态的示意图。 [0019] FIG. 3 is a schematic view of the molding apparatus of FIG 2 in a compressed state.

[0020] 图4是可伸缩罩连接部分的放大示意图。 [0020] FIG. 4 is an enlarged schematic view of the telescopic connection portion of the cover. 其中:a为图2中I部放大图;b为图3中II部放大图。 Wherein: a is an enlarged view of portion I in FIG. 2; b is an enlarged view of portion II of FIG.

具体实施方式 Detailed ways

[0021] 如图2所示,一种用于激光选区熔化成形的可折叠易更换成形装置,设置在原成形缸的缸体3内,包括成形基板7、底板5、从下往上逐渐缩小的伸缩罩4。 [0021] As shown in FIG. 2, for selective laser melting shaped foldable easy to replace forming apparatus, the original is provided within the cylinder shaped cylinder 3, comprising forming the substrate 7, the bottom plate 5, tapers from the bottom up 4 telescopic cover. 成形基板7固定在底板5上,伸缩罩4下端固定在底板5周边,底板5通过夹紧件6与电动推杆8的上板相连。 Forming the substrate 7 is fixed on the base plate 5, the lower end of the telescopic cover 4 is fixed to the periphery of the bottom plate 5, the bottom plate 5 by the clamp member 6 is connected to the push rod and the motor plate 8. 伸缩罩4上端通过夹紧件2和成形面I (与原成形缸上端连接)的下表面相连。 Telescopic cover 4 is connected to the upper end (the upper end of the cylinder is connected with the original molding) by the lower surface of the clamping member 2 and the molding surface I.

[0022] 开始成形时,电动推杆8推动底板5和成形基板7上升,使成形基板和成形面I平齐,此时伸缩罩4也随之缩短,形状变化如图3所示,其中伸缩罩4在图中形状仅起示意作用,实际应用不限材质和结构,只要能保证伸缩的效果以及有足够的刚度(不至于取出的时候坍塌导致粉末溢出)即可,底板5和成形基板7的总高度应不高于伸缩罩4在压缩的状态下的总高度。 When the [0022] start forming an electric push rod 8 and the push plate 5 forming the substrate 7 rises, the forming and the forming surface of the substrate flush I, the telescopic cover case 4 also will be shortened, a shape change 3, wherein the telescopic in the drawing the cover 4 illustrative only play the role of shape, material and structure of the actual application is not limited, as long as the effects of stretching and to ensure a sufficient rigidity (and will not collapse when removed results in powder overflow) to the bottom plate 5 and forming the substrate 7 the total height of the telescopic cover 4 should not exceed the total height in a compressed state. 成形过程中,成形装置随着底板的下降逐渐伸展,每铺一层金属粉末都会落到该装置内。 Forming process, the forming apparatus gradually extended with the decrease of the bottom plate, are each a layer of a metal powder falls within the device. 成形结束后,形状变化如图2所示,把夹紧装置2、6松开,取出成形装置,清理出其中的金属粉末,取出已成形的零件。 After the end of the molding, the shape change shown in FIG. 2, the clamping means 2,6 loosen, remove the molding apparatus, wherein the metal powder is cleared, the formed part removed.

[0023]图4给出了伸缩罩4的一个具体结构,包括高度大于底板和成形基板总高度的多个(至少三个)套在一起的环圈(图4b),径向最内侧环圈上端连接成形面I下表面;径向最外侧环圈下端固定在底板5周边,各环圈直径依次增大,各环圈轴向伸长后通过相反的“L”周边连接(图4a)。 [0023] FIG. 4 shows a specific configuration of the telescopic cover 4, comprising a bottom plate and a height greater than the total height of the substrate forming a plurality of (at least three) sets of loops together (FIG. 4B), the radially innermost ring an upper end connected to the lower surface of the forming surfaces I; the lower end of the radially outermost peripheral ring secured to the base plate 5, the diameter of each ring successively increased after each loop axially elongated "L" connected to the peripheral (FIG. 4a) by the opposite. 内侧环圈下“L”周边沿着外侧环圈上“L”周边的内壁滑动,这样可有效的防止粉末外流。 The inner loop "L" along the outer periphery of the loop "L" of the inner wall surrounding the slide, which can effectively prevent the outflow of the powder.

Claims (3)

1.一种用于激光选区熔化成形的可折叠易更换成形装置,其特征在于,包括成形基板、底板、从下往上逐渐缩小的伸缩罩,成形基板固定在底板上,伸缩罩下端固定在底板周边,底板通过下夹紧件与电动推杆上板相连;伸缩罩上端通过上夹紧件和成形面的下表面相连。 1. A method for forming a foldable Selective Laser melting molding apparatus easy to replace, wherein the substrate comprises a shaped, plate, tapers upwards from the bottom of the telescopic cover, molded substrate is fixed on the base plate fixed to the lower end of the telescopic cover bottom periphery, the bottom plate is connected to the electric pusher plate through the lower clamping member; end of the telescopic cover are connected by the lower surface of the clamping member and the forming surface.
2.如权利要求1所述的用于激光选区熔化成形的可折叠易更换成形装置,其特征在于,所述的伸缩罩包括多个套在一起的环圈,径向最内侧环圈上端连接成形面下表面;径向最外侧环圈下端固定在底板周边,各环圈直径依次增大,各环圈轴向伸长后通过相反的“L”形周边连接,内侧环圈下“L”周边沿着外侧环圈上“L”周边的内壁滑动。 2. Selective Laser according to claim 1 Molten easily replaceable collapsible molding apparatus, wherein said telescopic cover comprising a plurality of sets of loops together, the upper end connected to the radially innermost ring forming a lower surface; a lower end fixed to the radially outermost ring surrounding the base plate, each of the loops sequentially increasing diameter, each of the ring axially elongated by reverse "L" shaped peripheral connection, the inner loop "L" on the outside along the periphery of the loop "L" of the inner wall surrounding the slide.
3.如权利要求2所述的用于激光选区熔化成形的可折叠易更换成形装置,其特征在于,所述底板和成形基板的轴向总高度不高于伸缩罩在压缩的状态下的总高度。 3. Selective Laser according to claim 2 Molten easily replaceable collapsible forming device, characterized in that the axial overall height of the base and forming the substrate is not higher than the total of the telescopic cover in a compressed state, height.
CN201310320681.5A 2013-07-26 2013-07-26 Selective Laser melting foldable for easy replacement shaped molding apparatus CN103447528B (en)

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CN103862043B (en) * 2014-03-05 2015-12-09 西安交通大学 Increasing device nonmagnetic metal laser sintering powder forming quality

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DE19821810C1 (en) * 1998-05-15 2000-03-09 Atz Evus A process for producing metallic and nonmetallic function pattern with the aid of rapid prototyping / tooling methods or other methods and alternative process gas supply
EP1037739B2 (en) * 1998-10-09 2008-03-12 EOS GmbH Electro Optical Systems Device for producing a three-dimensional object, especially a laser sintering machine
CN100386173C (en) * 2005-12-09 2008-05-07 大连理工大学 Laser rapid-forming method based on contour scanning of coated powder materials
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