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Piezoelectric-type three-dimensional printing forming system and forming method thereof

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CN102602146A
CN102602146A CN 201210053493 CN201210053493A CN102602146A CN 102602146 A CN102602146 A CN 102602146A CN 201210053493 CN201210053493 CN 201210053493 CN 201210053493 A CN201210053493 A CN 201210053493A CN 102602146 A CN102602146 A CN 102602146A
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forming
type
piezoelectric
system
dimensional
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CN 201210053493
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Chinese (zh)
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CN102602146B (en )
Inventor
占志敏
孙博
张鸿海
徐裕力
曹澍
朱天柱
胡燕
舒霞云
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华中科技大学
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Abstract

The invention discloses a piezoelectric-type three-dimensional printing forming system and a forming method thereof. The system comprises a box body and a supporting framework thereof, an X-direction movement mechanism (11), a bearing structure (21) which is connected onto the X-direction movement mechanism, a powder storage cavity (13), a forming cavity (17), a three-dimensional image layering discrete mechanism, a powder pavement mechanism (20) and a piezoelectric-type spray head (10), wherein the powder storage cavity (13) and the forming cavity (17) are arranged below the bearing structure, and the powder pavement mechanism (20) and the piezoelectric-type spray head (10) are loaded on the bearing structure (21). The piezoelectric-type spray head can spray a solution without heating the solution, so that more varieties of solutions can be sprayed, and the piezoelectric-type three-dimensional printing forming system can be applied to the emerging fields such as biology, pharmacy and the like. Caking ingredients can be mixed into powder through the system, so that sufficient caking ingredients can be added to achieve satisfactory caking strength. In addition, the piezoelectric-type three-dimensional printing forming system has advantages of compact structure, simpleness in operation, low equipment expense and high forming precision.

Description

压电式三维打印成型系统及其成型方法 Piezo 3D printing system and a molding method

技术领域 FIELD

[0001] 本发明涉及三维打印成型技术领域,更具体地,涉及一种压电式喷射三维打印成型系统及其成型方法。 [0001] The present invention relates to 3D printing, and more particularly, relates to a piezoelectric system and a spray forming method for forming a three-dimensional printing.

背景技术 Background technique

[0002] 三维打印快速成型技术最早由美国麻省理工学院Emanuel Sachs等人研制,是目前快速成型领域最具生命力的技术之一,有广阔的应用前景。 [0002] three-dimensional printing rapid prototyping technology was first developed by the Massachusetts Institute of Emanuel Sachs et al., Is one of the most viable areas of rapid prototyping technology has broad application prospects. 该技术是一种基于“离散/堆积”思想的增长型制造技术,利用计算机技术将三维CAD模型沿一个方向离散成一系列二维截面图,然后根据截面图信息,逐层打印堆积成型。 This technique is based on technology-growth producing "dispersion / deposition" Ideas, using computer technology CAD model into a series of discrete directions in a two-dimensional section view and a sectional view of the information, the print layer by layer deposition modeling. 在每一层打印中,利用精密喷头在预先铺好的粉末平面上喷射粘结溶液,将喷射区域内的粉末粘结起来,然后将已打印的粉末平面下降一定高度并在上面铺上一层粉末,准备下一截面图的打印。 Printing each layer, using a precision ejecting the adhesive solution onto the powder previously paved plane, the ejection powder in the bonded area, and the powder is dropped flat printed certain height and covered with a layer above powders, ready to print the next cross-sectional view. 如此循环,逐层粘结堆积,直到整个CAD模型的所有截面图全部打印完成,经过后处理,除去未粘结的粉末,就形成了实体三维模型。 This cycle, the accumulation of the adhesive layer by layer, until all of the entire cross-sectional view of the CAD model all printing is completed, after treatment, removing unbonded powder to form a solid three-dimensional model.

[0003] 它能根据产品的三维模型数据,迅速而精确地制造出该产品,而不借助传统的零件制造过程需要的车、铣、刨、磨、钳等多种机加工设备和模具,成本低,耗时短。 [0003] The three-dimensional model of the product it data, quickly and accurately manufacture the product, without the aid of a conventional vehicle parts manufacturing process requires, milling, planing, grinding, jaw and other machining equipment and tooling, the cost of low, short time-consuming. 三维打印快速成型技术在成型精度、设备价格、对环境污染、成型周期和原料多样性等方面相对于其他快速成型方法占据优势。 Three-dimensional printing rapid prototyping technology in molding precision, equipment prices, environmental pollution, raw material and molding cycle diversity relative to other rapid prototyping methods dominate. 与光固化快速成型、分层实体制造法和选择性激光烧结快速成型技术相比,三维打印快速成型技术具有设备价格低、成型精度高、环境污染小的优势。 Optical stereolithography, laminated object manufacturing and selective laser sintering technology as compared to three-dimensional rapid prototyping technology printing apparatus having a low price and high precision molding, the advantages of less pollution. 与熔融沉积快速成型技术相比,三维打印快速成型技术能够成型材料种类较多,且制件时间比较短。 Compared with fused deposition rapid prototyping, three-dimensional rapid prototyping technology capable of printing more types of the molding materials, parts and relatively short time. 三维打印快速成型技术已广泛应用于原型快速制造,模具快速制造,功能部件制造, 医学模型,制药工程,组织工程等领域。 Three Dimensional Printing rapid prototyping art rapid prototyping technology has been widely used in manufacturing, rapid manufacturing molds, manufacturing functional components, medical models, pharmaceutical engineering, tissue engineering.

[0004] 然而,目前在三维打印快速成型领域中,一般都采用热气泡式喷嘴喷射成型材料或者粘结材料,通过加热产生热气泡的方式来产生微滴。 [0004] However, in the three-dimensional printing in rapid prototyping art, generally used thermal bubble ejection nozzle forming material or binder material, heat is generated by thermal bubble generation mode droplets. 这种方式不可避免地对喷射的材料性质产生影响,特别是对三维打印快速成型技术在生物、制药等新兴领域的应用约束较大。 In this manner inevitably have an impact on the properties of the material injected, especially for three-dimensional printing technology in rapid prototyping applications emerging field of biological, pharmaceutical and other constraints larger. 三维打印成型系统一般都是将粘结成分添加到溶液中,受喷射时的粘度限制,粘结成分含量往往不足,粘结强度不够理想。 3D printing systems are generally added to the solution adhesive composition, the viscosity limit by injection, the content of the adhesive composition tends to be insufficient, the adhesive strength is not ideal. 另外,现有的快速成型系统结构复杂,控制精度不够,而且成型所需的粉末以及粘结剂价格昂贵,这些都限制了进一步的推广使用。 Further, the conventional rapid prototyping system complicated structure, control accuracy is not enough, and the desired shaped powder and a binder is expensive, these are limited to further promote the use.

发明内容 SUMMARY

[0005] 针对现有技术的以上缺陷,本发明的目的在于提供一种压电式三维打印成型系统及其相应的成型方法,从而能够在成型时喷射溶液无需加热,可喷射溶液种类多,且设备费用低,成型制件粘结强度和精度高。 [0005] To solve the above drawbacks of the prior art, an object of the present invention to provide a piezoelectric 3D printing systems and their corresponding molding method, it is possible to injection molding without heating the solution, the solution may be a multi-injection type, and low equipment cost, high bond strength and the accuracy of the molded article.

[0006] 按照本发明的一个方面,提供了一种压电式三维打印成型系统,该系统包括箱体及其支撑框架、X向运动机构、承载结构、粉腔、三维图像分层离散机构、铺粉机构以及压电式嗔头,其中: [0006] According to an aspect of the present invention, there is provided a piezoelectric 3D printing system, the system comprising a housing and a support frame, X direction movement mechanism, the bearing structure, powder chamber, means a discrete layered three-dimensional image, powder spreading means and piezoelectric anger head, wherein:

[0007] 所述X向运动机构安装在支撑框架上,包括步进电机、沿着X轴方向设置且相互平行的两个同步带,以及横跨在所述平行同步带之间并与所述步进电机相联接的传动轴,该传动轴的两端分别安装有同步带轮,由此带动与之相连的所述平行同步带执行X轴方向的运动; [0007] The X direction moving mechanism mounted on the support frame, comprises a stepper motor, and is disposed along the X-axis direction parallel to each other two belt and spanning between the belt and parallel to the a stepper motor coupled to the drive shaft, the shaft ends are attached to the timing belt pulleys, whereby movement of the drive belt associated therewith is performed in parallel the X-axis direction;

[0008] 所述承载结构的两侧分别联接在所述平行同步带上,用于承载所述压电式喷头和铺粉机构; [0008] both sides of the bearing structure are respectively coupled in parallel to said belt, for carrying the head and dusting piezoelectric bodies;

[0009] 所述粉腔设置在箱体内位于所述承载结构之下,包括储粉腔和成型腔,分别用于存放构成三维图像实体的粉末材料; [0009] The powder chamber is provided in the housing located below said bearing structure, comprising a powder storage chamber and a molding chamber, respectively, for storing a powder material constituting the three-dimensional image of the entity;

[0010] 所述三维图像分层离散机构用于将需要成型的三维图像按照一定层高而离散成一系列的连续二维片状图像; [0010] The three dimensional image will require a hierarchical discrete means for forming in a certain story into a series of discrete and continuous two-dimensional sheet-like images;

[0011] 所述铺粉机构设置在所述承载结构上随其X向运动而运动,并按照所述三维图像分层离散机构所设定的层高依次将相应高度的粉末材料从所述储粉腔推动转移到成型腔; [0011] The dusting means disposed on said carrier with which the X-direction movement structure moves, and the three-dimensional image according to the hierarchical set of discrete means sequentially storey height of the respective powder material from the reservoir powder is transferred to the chamber pushing the molding cavity;

[0012] 所述压电式喷头设置在所述承载结构上随其X向运动而运动,同时可沿着垂直于X轴方向的Y轴方向往复移动,用于向被所述铺粉机构依次推至成型腔的粉末材料分别喷射作为粘结剂的溶液,由此执行对粉末材料的粘结成型。 [0012] The piezo head is provided with an X in the carrier structure is moved to the movement, and can reciprocate along the Y-axis direction perpendicular to the X-axis direction, to be used for the dusting means sequentially push the powder material into the molding cavity are injected as a binder solution, thereby performing the bonding of the powder molding material.

[0013] 通过本发明的以上技术构思,由于采用压电式喷头作为粘结剂溶液的喷射机构, 与热泡式喷头结构相比,喷射时无需加热溶液,由此可以喷射更多种类的溶液,并可以通过调整溶液中的粘结成分来达到满意的粘结强度;由于将喷头及铺粉机构装载在承载机构上,一方面能够使得功能组件的结构布置更为紧凑,方便与X向运动机构的联接和运动,另一方面还能够弥补压电式喷头的支撑结构刚度不足的缺点,从而保证打印喷射的正常进行;另外,由于承载结构Y向的尺寸较大,若采用单侧驱动,容易出现非驱动侧响应慢于驱动侧的现象,相应影响打印精度,本发明中采用双侧同步带驱动模式,可以很好地解决上述问题。 [0013] Through the above technical concept of the present invention, since the piezoelectric nozzle injection mechanism binder solution as compared with the thermal bubble nozzle structure, without heating the injection solution, whereby more kinds of solutions may be injected , and by adjusting the adhesive component solution to achieve satisfactory bonding strength; Since the dusting nozzle and means mounted on the support means, on the one hand so that the structure can be more compact arrangement of the functional components, to facilitate the movement of the X and movement of the coupling mechanism, on the other hand is also possible to make up for the shortcoming of the supporting structural rigidity of the piezoelectric nozzle, so as to ensure normal printing injected; in addition, due to the large size of the bearing structure Y direction, the use of a single-sided drive, non-driving side is prone to slow response to the driving side of the phenomenon, corresponding impact printing precision, the present invention uses double-sided timing belt drive mode, you can solve the above problems.

[0014] 作为进一步优选地,所述铺粉机构包括直流电机和通过联轴器与该直流电机相联接的铺粉辊筒,所述铺粉辊筒的两端具有片状挡粉板,由此在直流电机的驱动下将粉末材料从所述储粉腔推动转移到成型腔。 [0014] As a further preferably, the powder spreading means comprises a DC motor and a DC motor through a coupling coupled with the plated powder roll, laying the two ends of the sheet-like powder having a stop roller plate powder from this DC motor is driven in the powder material from the powder reservoir chamber to promote transfer of the molding cavity.

[0015] 通过将铺粉机构设置为配置有片状挡粉板的辊筒状结构,并将其与独立的直流电机相联接,可以通过辊筒结构的旋转将推积的粉末适当扬起,减少铺粉阻力,同时铺粉辊筒可以平整已经铺过的粉末平面;此外,铺粉辊筒在随着承载结构的X向移动而移动的过程中,片状挡粉板可以防止粉末在移动过程中从两端落下,以提高粉末移动的精度并避免浪费。 [0015] By dusting mechanism is provided to block the powder is disposed a sheet roll plate-like structure, and with a separate DC motor coupled, can push the product by the rotation of roller tube structure suitable powder raised, reduce dusting resistance, while the powder spreading roll can have a flat plane paved powder; in addition, during the powder spreading roller bearing structure X as the mobile moves, the sheet stopper plate may prevent the powder in the powder movement during falling from both ends, in order to improve the powder movement accuracy and avoid wasting.

[0016] 作为进一步优选地,所述压电式喷头连接有溶液供应装置,该溶液供应装置用于贮存及向压电式喷头补充作为粘结剂的溶液。 [0016] As a further preferably, the piezo head is connected to the solution supply means, the supply means for storing the solution as a binder solution was added and the piezoelectric nozzle.

[0017] 通过给压电式喷头添加打印溶液供应装置,能够保证在成型过程中有足够量的打印溶液,同时可以针对不同的三维图像类型方便地更换或添加其他种类的打印溶液,提高操作便利性和效率。 [0017] By adding to the piezo head printing solution supply device, to ensure a sufficient amount of the printing solution during the molding process, and can easily replace or add other kinds of print solution for three-dimensional images of different types, to improve the operating convenience and efficiency.

[0018] 作为进一步优选地,所述粉腔还包括回收腔,该回收腔紧贴着所述成型腔设置在其一侧,由上表面开口的箱体构成且其底部具有可开合的抽板,用于回收成型腔多余的粉末材料。 [0018] As a further preferably, the powder recovery chamber further comprises a cavity, the cavity close to the recovery of the forming cavity disposed on one side, by the upper surface of the case opening and its bottom constituted retractable pumping plate, the material forming the chamber for recovering excess powder. [0019] 通过紧贴着成型腔来设置箱体结构的回收腔,可以通过简单操作即回收粉末材料,此外,由于回收腔的箱体底部具有可开合的抽板,方便将收集的多余粉末取出。 [0019] By forming cavity is set close to the recovery chamber box structure, i.e., can be recovered by a simple operation of powder material, in addition, since the recovery chamber having a bottom housing opening and closing the pumping plate can facilitate the collected excess powder take out.

[0020] 作为进一步优选地,所述三维打印系统还包括刮粉装置,该刮粉装置安装在所述回收腔处例如为海绵材料、柔性刮板等,用于对运动至此位置的铺粉辊筒表面上的粉末执行擦除和清洁操作。 [0020] As further preferred that the three-dimensional printing system further comprising doctor means, the doctor means is mounted in said recovery chamber at a sponge material, for example, the flexible scraper, powder spreading roller pair for moving to this position powder on the surface of the cylinder cleaning operation and perform an erase.

[0021] 通过设置刮粉装置,可以有效擦除和清洁铺粉辊筒表面上的残余粉末,相应提高各个层高的二维图像的成型精度。 [0021] By providing the doctor device can be effectively erase residual powder on the roll surface cleaning and dusting, improve molding accuracy corresponding two-dimensional image of the respective storey.

[0022] 作为进一步优选地,所述支撑框架由带孔角钢或带孔槽钢焊接而成,由此方便地在框架上安装支撑横梁结构,并将粉腔、X向运动机构等部件通过支撑横梁结构而得到固定,并可以通过调节螺纹连接位置来调整各个部件的位置。 [0022] As further preferred that the support frame by welding or perforated angle formed apertured channel, thereby easily mounting the support structure on the frame cross member, and the powder cavity, X direction by the support member moving mechanism, etc. beam structure obtained is fixed, and the position of each member may be adjusted by adjusting the position of the threaded connection.

[0023] 作为进一步优选地,所述储粉腔和成型腔的底壁分别由带孔压板构成,在该带孔压板的下部分别设置有负压吸附机构,该负压吸附机构包括由带凹腔的底板、带孔盖板和完成两者之间密封的第一密封圈共同形成的腔体,与所述带凹腔的底板相连的抽真空装置,覆盖在所述带孔盖板上的滤网,以及完成所述滤网、带孔盖板和带孔压板之间密封的第 [0023] As a further preferably, the bottom wall of the powder reservoir chamber and the forming chamber is constituted by a perforated platen respectively, are provided at a lower portion of the perforated platen has vacuum adsorption mechanism, the vacuum suction means comprises a recess with bottom plate chamber, a perforated cover and complete the seal between the first sealing ring cavity formed together with the floor of the cavity with a vacuum pump connected to the means overlying the perforated cover filter, and the filter is completed, the seal between the perforated plate and the second perforated platen

二密封圈。 Two seals.

[0024] 通过上述构造的负压吸附机构,对于各个用于存放成型粉末的储粉腔或成型腔而言,抽真空装置抽出空气造成腔体内形成负压,并通过带孔盖板和带孔压板的孔以及滤网, 将储粉腔或成型腔内的粉末材料负压吸附压实,由此能够增加三维图像实体的致密度起到提高打印精度的效果。 [0024] The vacuum adsorption mechanism through the above-described configuration, in terms of the molding powder for each reservoir for storing powder molding cavity or cavities, resulting in air evacuation means for withdrawing a negative pressure cavity, and through the perforated plate and perforated platen hole and the filter, the powder reservoir chamber or vacuum molding a powder material compacting adsorption chamber, thereby increasing the density of the three-dimensional image of the entity of the effects of improving printing accuracy.

[0025] 作为进一步优选地,所述储粉腔和成型腔分别包括粉腔升降机构,该粉腔升降机构由步进电机、与该步进电机相联接的蜗轮减速器、以及与所述蜗轮减速器相联接的丝杆螺母副构成。 [0025] As further preferred that the powder reservoir chamber and a cavity forming cavity include powder lifting mechanism, the lifting mechanism powder chamber by the stepping motor, the stepping motor with a worm reducer coupled, and the worm wheel Vice screw nut constituting the reduction gear coupled.

[0026] 通过上述构造,步进电机驱动蜗轮减速器,然后通过丝杆螺母副来带动成型腔底壁和储粉腔底壁精密地上下运动。 [0026] With the above configuration, the stepper motor driving a worm reducer, the molding cavity and to drive the bottom wall and the bottom wall of the reservoir chamber powders precisely moved up and down by a screw nut. 此外,涡轮减速器可以保证竖直方向的自锁,而且一定的减速倍数可以实现每次运动足够小的间距。 Further, the turbine speed reducer can ensure self-locking in the vertical direction, and constant deceleration multiples each movement can be achieved sufficiently small pitch.

[0027] 作为进一步优选地,所述三维打印成型系统还包括有自动化控制装置,该自动化控制装置用于对整个三维打印成型系统操作过程中的三维图像分层离散、三维方向上的运动控制、抽真空装置以及温度控制等统一进行控制,由此实现对整个三维打印过程的无人值守式工作。 [0027] As a further preferred, the 3D printing system further comprises automatic control means, means for the automatic control of the entire three-dimensional discrete image forming operation of the system during a layered three-dimensional printing, the three-dimensional motion control direction, vacuum means and temperature control are uniformly controlled, thereby realizing work unattended entire three-dimensional printing process.

[0028] 按照本发明的另一方面,还提供了相应的三维打印方法,该方法包括: [0028] According to another aspect of the present invention there is also provided a corresponding three-dimensional printing, the method comprising:

[0029] 通过三维图像分层离散机构将需要成型的三维图像以一定的层厚离散成一系列连续的二维片状图像; [0029] The three-dimensional image by means of discrete layered three-dimensional image will require a constant thickness of molded into a series of successive discrete two-dimensional image of a sheet;

[0030] 在X向运动机构带动下,铺粉机构按照所述三维图像分层离散机构所设定的层高依次将相应高度的粉末材料从所述储粉腔推动转移到成型腔; [0030] In the X-direction moving mechanism, driven by the powder spreading mechanism according layered three-dimensional image set of discrete means sequentially storey height of the respective powder material from the powder reservoir to the chamber to promote transfer of the molding cavity;

[0031] X向运动机构将喷头带入成型腔上方的打印区域,并根据二维片状图像信息带动压电式喷头沿X向运动,所述压电式喷头自身沿垂直于X轴方向的Y向运动并选择性地喷射作为粘结剂的溶液,由此按照二维片状图像信息将粉末材料粘结成型; [0031] X motion mechanism to bring the print head over the region of the shaping cavity, and drive two-dimensional image information of the sheet-like piezoelectric nozzle to the movement along the X piezo head itself direction perpendicular to the X-axis direction, Y and selectively ejected as a binder solution of motion, whereby a two-dimensional image information of the sheet-like adhesive material forming the powder;

[0032] X向运动机构及承载结构返回初始位置,准备下一个二维片状图像的打印,然后重复进行以上步骤如此循环,直到所有二维片状图像都打印完成。 [0032] X movement mechanism, and is returned to the initial position of the bearing structure, in preparation for a two-dimensional sheet-like print image, then the above procedure is repeated and so on, until all the images are two-dimensional sheet-like printing is completed. [0033] 总体来说,本发明对比现有技术有如下的有益效果:该系统中通过压电式喷嘴喷射产生微滴,喷射时无需加热溶液,可以喷射更多种类的溶液,将三维打印成型技术应用在生物、制药等新兴领域;并可以通过调整溶液中的粘结成分来达到满意的粘结强度。 [0033] In general, the present invention comparative prior art has the following advantageous effects: the system by a piezoelectric injector nozzle to produce droplets, without heating the injection solution, the solution can be sprayed more kinds of the 3D printing application in the emerging field of biological, pharmaceutical and the like; and may be achieved by adjusting the satisfactory adhesive strength of the adhesive component solution. 将喷头及铺粉机构装载在承载机构上,能够使得功能组件的结构布置更为紧凑,方便与X向运动 The nozzle and dusting means mounted on the support means, such that the functional components can be arranged in a more compact configuration, to facilitate movement of the X

机构的联接;此外,X向运动采用双侧驱动模式,运动精度更高,成型质量好。 Coupling means; in addition, X using the bilateral movement of the drive mode, the higher motion accuracy, forming a good quality. 附图说明 [0034] 图I是按照本发明的三 三维打印成型系统的总体结构示意图;[0035] 图2是按照本发明的三 三维打印成型系统的立体示意图;[0036] 图3是按照本发明的三 三维打印成型系统中的铺粉机构的结构示意图;[0037] 图4是按照本发明的三 三维打印成型系统中的X向运动机构及承载结构的示意图;[0038] 图5是按照本发明的三 三维打印成型系统中的粉腔升降机构的结构示意图;[0039] 图6是按照本发明的三维打印成型系统中的负压吸附机构的结构示意图。 BRIEF DESCRIPTION [0034] FIG. I is a schematic view of an overall structure of a printing system formed in accordance with the present invention, the three-dimensional; [0035] FIG. 2 is a perspective view of the printing three-dimensional molding system according to the invention; [0036] FIG. 3 in accordance with the present three-dimensional invention print schematic configuration dusting means forming system; [0037] FIG. 4 is a schematic view of molding system in X-direction movement mechanism and the bearing arrangement of a printing three-dimensional according to the invention; [0038] Figure 5 is three-dimensional schematic view of the present invention is a printing powder lift mechanism chamber forming system; [0039] FIG. 6 is a schematic view of the vacuum adsorption mechanism formed in accordance with the three-dimensional printing system of the present invention. 具体实施方式 [0040] 为了使本发明的目的、技术方案及优点更加清楚明白,以下结合附图及实施例,对 DETAILED DESCRIPTION [0040] To make the objectives, technical solutions and advantages of the present invention will become more apparent, the following embodiments and the accompanying drawings, of

本发明进行进一步详细说明。 The present invention is further described in detail. 应当理解,此处所描述的具体实施例仅仅用以解释本发明,并不用于限定本发明。 It should be understood that the specific embodiments described herein are only intended to illustrate the present invention and are not intended to limit the present invention.

[0041] 请同时参见图I至图2,本发明的三维打印成型系统包括压电式喷头10、粉腔22、 铺粉机构20、承载结构21、X向运动机构11、负压吸附机构12、粉腔升降机构14、刮粉装置19、箱体及其支撑框架23以及自动化控制装置(未图示)等组件。 [0041] Please also see FIG. 2 to FIG I, a three-dimensional molding system according to the present invention comprises a piezoelectric printing head 10, the powder chamber 22, powder spreading mechanism 20, the bearing structure 21, X 11 to the movement mechanism, vacuum adsorption mechanism 12 powder chamber elevating mechanism 14, 19, the housing means and the support frame 23 and the doctor automated control means (not shown) or the like assembly.

[0042] 压电式喷头10由压电式喷墨打印机改造而成,保留了喷墨打印机的压电式喷头、 喷头运动机构(即Y向运动机构)及其驱动装置,并添加打印溶液供应装置9,保证在成型过程中有足够量的打印溶液。 [0042] The transformation of the piezoelectric head 10 of a piezoelectric ink jet printer by the retention of piezoelectric ink jet printer head, the head moving mechanism (i.e., Y-direction movement mechanism) and the drive means, and adding a print solution supply means 9, to ensure a sufficient amount of the printing solution during the molding process. Y向运动机构采用的是步进电机带动同步带,圆柱导轨导向, 光栅检测方式,带动压电式喷头沿Y向运动。 Y movement mechanism using the stepping motor is driven by a timing belt, the cylindrical guide rail, detecting the raster mode, driving piezo head motion in the Y direction. 压电式喷头10基于压电式喷墨打印机的设计, 降低了三维打印成型设备的费用;通过压电式喷嘴喷射产生微滴,喷射时无需加热溶液,可以喷射更多种类的溶液;此外,通过将粘结成分混合在粉末中,打印溶液供应装置9中的水基溶液喷射到粉末表面将打印区域的粉末粘结成型,可以在粉末中添加充足的粘结成分, 达到满意的粘结强度。 Piezo head 10 is designed based on piezoelectric inkjet printer, reducing the cost of 3D printing apparatus; produced by a piezoelectric droplet jet nozzle, without heating the injection solution, a solution may be injected more kinds; Furthermore, by mixing the ingredients in the powder bonded, print solution supply means 9 in the water-based solution is sprayed onto the surface of the powder molding powder adhesive print area, sufficient bonding component may be added in the powder, to achieve a satisfactory bond strength .

[0043] 粉腔22包括储粉腔13和成型腔17。 [0043] The powder chamber 22 includes a powder reservoir chamber 13 and the molding cavity 17. 储粉腔13与成型腔17均是由两个没有上下表面长方体侧壁和作为底壁的带孔压板46(图6示出)构成,形成可以盛放粉末材料的容器。 Powder storage chamber 13 of the molding chamber 17 are upper and lower surfaces of the side walls and a rectangular bottom wall perforated platen 46 (shown FIG. 6), and a powder material accommodating container may be formed by two no. 为了便于对多余的粉末材料进行回收,还可以包括回收腔16。 To facilitate the recovery of excess powder material may further include recovering chamber 16. 该回收腔16由一个上表面开口的箱体构成,紧贴着成型腔17以回收成型腔多余的粉末材料,底部有可开合的抽板,方便将收集的多余粉末取出。 The recovered from the housing chamber 16 constituting a upper surface of the opening, close to the molding cavity 17 the material to recover a powder of excess molding cavity, the bottom plate can be opened and closed draw, to facilitate the collection of excess powder removed.

[0044] 承载结构21是一个箱体结构,用于承载铺粉机构20、压电式喷头10,使其紧凑地布置在一起,方便与X向运动机构11相连接并在其带动下沿X向运动,可以完成铺粉机构20的平动,也可以与Y向运动协同完成压电式喷头的XY向扫描动作。 [0044] The carrying structure is a box structure 21, 20 for carrying the powder spreading means, piezoelectric nozzle 10, arranged together so compact, easy to connect and its lead in the X-direction moving mechanism 11 and the X the movement may be accomplished dusting translation mechanism 20 may be collaboratively piezoelectric nozzle to the XY scanning operation to the movement of the Y. 承载结构21同时弥补改造后的喷墨打印机刚度不足,保证打印喷射的正常进行。 Insufficient rigidity of the carrier jet printer 21 at the same time to make up the transformation of the structure, to ensure normal printing injection.

[0045] 刮粉装置19由一块安装在回收腔16上的例如海绵等柔性材料构成,当铺粉辊筒29 (图3示出)运动到此位置时,转动并与之产生摩擦,将附着在表面的粉末擦除,保持表面光洁。 A flexible material such as a sponge [0045] 19 by the doctor means is mounted on a configuration of the recovery chamber 16, the powder pawn roller 29 (shown in FIG. 3) during movement to this position, and with the rotation of the friction, will be attached to erasing powder surface, keeping the surface finish.

[0046] 支撑框架23包采用有孔角钢或者带孔槽钢焊接而成,可以方便地在框架上安装支撑横梁24,并将粉腔升降机构14、粉腔22和X向运动机构11等模块通过支撑横梁24固定,且可以通过调节螺纹连接位置调整各模块的位置。 [0046] The support frame 23 has a bag with holes or perforated angle channel welded, supporting beams can be easily mounted on the frame 24, and the elevating mechanism 14 dust chamber, the chamber 22 and the powder X-direction movement mechanism 11 and other modules cross member 24 is fixed by the support, and each module can adjust the position by adjusting the position of the threaded connection.

[0047] 请参见图3,示出了铺粉机构20的一个实施例。 [0047] Referring to Figure 3, there is shown a dusting mechanism 20 embodiment. 如图3所示,带减速器的直流电机25通过联轴器27带动铺粉辊筒29转动。 As shown in FIG. 3, the DC motor 29 with a reducer 25 rotates dusting roller 27 driven through the coupling. 铺粉辊筒29两端设置片状挡粉板28,防止粉末从两端落下。 Powder spreading the sheet-like roller 29 is provided at both ends of stopper plate 28 powder, to prevent the powder falling from the ends. 带减速器的直流电机25和铺粉辊筒29分别通过电机支座26和两个辊筒支座30固定在承载结构21上。 DC motor reducer 25 and rollers 29 are dusting by a motor holder 26 and the two support rollers 30 is fixed to the bearing structure 21. 在三维打印成型的铺粉过程中,通过铺粉辊筒29的平动,将粉末材料从储粉腔13推至成型腔17 ;通过铺粉辊筒29的转动,将堆积的粉末适当扬起,减小铺粉阻力;同时铺粉辊筒29可以平整已经铺过的粉末平面。 In dusting 3D printing process, the powder spreading roll 29 of the translation, the powder material from the powder reservoir chamber 13 is pushed to the forming chamber 17; dusting rotated by the roller 29, the powder deposited suitably raised reduced powder spreading resistance; dusting while roll 29 may be a flat plane has paved powder.

[0048] 请参见图4,示出了X向运动机构11的一个实施例。 [0048] Referring to Figure 4, shows an X-movement mechanism 11 to one embodiment of the embodiment. 如图4所示,步进电机31通过联轴器与一根横跨两侧沿X向的圆导轨35的传动轴36相联,传动轴36两端分别各安装一个同步带轮32,两个同步带轮各带动一条齿形同步带34,每条同步带分别通过连接块33 与承载结构21的该侧相联。 4, via a coupling 31 with a circular cross rail along the X direction on both sides of the drive shaft 35 of stepper motor 36 linked to the two ends of each shaft 36 are mounted a belt wheel 32, two a belt wheel of each drive a toothed belt 34, respectively, through which each belt block 33 is connected to the side structure 21 of the associated carrier. 如此,形成了从承载结构21两侧同时同步驱动的X向运动机构。 Thus, both sides of the carrier 21 is formed from a structure while being synchronized to the movement of an X-drive mechanism. 避免了由于单侧驱动带来的非驱动侧响应慢于驱动侧对成型精度的不良影响。 Avoid the adverse effect on the molding precision due to one-sided non-driving side of the drive to bring slower response to the driving side. 双侧驱动的X向运动机构11通过两侧的圆导轨35导向。 Bilateral drive the X-direction movement mechanism 11 by circular guide rail 35 on both sides.

[0049] 请参见图5,示出了粉腔升降机构14的一个实施例。 [0049] Referring to FIG 5, there is shown a lifting mechanism 14 dust chamber embodiment. 如图5所示,步进电机37通过联轴器38与蜗轮减速器44的蜗杆相连,蜗轮减速器44的蜗轮轴与丝杠螺母副42的螺母刚性连接,如此,将步进电机37的转动传递到螺母的转动。 As shown, the stepping motor 537 through the worm reducer coupling 38 and the worm wheel 44 is connected to worm gear shaft and the nut rigidly connected to the worm wheel 42 of the screw nut 44, and so, the stepping motor 37 the rotation is transmitted to the rotating nut. 蜗轮减速器44固定在支板39 上,蜗轮轴和螺母在竖直方向上不能运动,故螺母的转动带动丝杠螺母副42的丝杠在竖直方向上运动。 The worm gear 44 fixed to the support plate 39, the worm wheel shaft and the nut can not move in the vertical direction, so that the driven rotation of the spindle nut screw nut 42 is moved in the vertical direction. 丝杠与丝杆两侧的两根圆柱轴40通过上连接板45和下连接板41刚性连接, 与圆柱轴40配合的直线轴承43固定在支板39上,通过圆柱轴40和直线轴承43的配合导向,保证丝杠是在竖直方向上移动。 The two sides of the cylinder axis of the threaded screw 40 by the connecting plate 45 and the lower connecting plate 41 is rigidly connected to a cylindrical shaft 40 with a linear bearing 43 is fixed on the support plate 39 by a cylindrical shaft 40 and the linear bearings 43 mating guide, to ensure that the screw is moved in the vertical direction. 负压吸附机构12固定在上连接板45上,与丝杆一起在竖直方向运动。 Vacuum adsorption mechanism 12 is fixed to the coupling plate 45, movement in the vertical direction together with the screw. 支板39固定在支撑横梁24上,支撑横梁24固定在支撑框架23上,可通过螺纹连接方便地调节位置和高度。 Support plate 39 is fixed on the support beam 24, support beam 24 is fixed on the support frame 23 can easily adjust the height and position by means of a threaded connection.

[0050] 请参见图6,示出了负压吸附机构12的一个实施例。 [0050] Referring to FIG. 6, there is shown a vacuum adsorption mechanism 12 embodiment. 如图6所示的结构,带凹腔的底板50、第一密封圈48和带孔盖板51形成一个腔体,带凹腔的底板50上有一个接口49 连接到抽真空装置,盖板51上覆盖一层滤网52,并由第二密封圈47完成滤网52、带孔盖板51和带孔压板46之间的密封。 Configuration shown in Figure 6, the bottom plate 50 with a cavity, a first seal 48 and the perforated plate form a cavity 51, the interface 49 is connected to a vacuum means 50 with the cavity plate, the cover plate 52 on the screen 51 covered by the second sealing ring 47 complete the seal 46 between the filter 52, cover plate 51 and perforated perforated platen. 带孔压板46用于承载储粉腔13或成型腔17内的粉末材料,抽真空装置抽出空气造成腔体内形成负压,并通过带孔盖板51和带孔压板46的孔以及滤网,将储粉腔13或成型腔17内的粉末材料负压吸附压实,提高三维打印成型部件的致密度。 Perforated platen 46 for carrying the powder reservoir chamber 13, or the powder material within the molding cavity 17, causing the vacuum means to draw air negative pressure cavity, and through the perforated plate 51 and screen 46 and the perforated hole of the pressure plate, the powder material 17 in the negative pressure chamber 13 or reservoir powder compaction molding cavity adsorption, improved 3D printing density member.

[0051] 此外,本发明的三维打印成型系统还包括有自动化控制装置,该自动化控制装置以运动控制卡为基础,计算机端控制单元集合了二维片状图像生成功能、流程控制、运动控制、喷墨打印机控制、铺粉电机控制、抽真空装置与温度控制等多项功能,实现对整个三维打印过程的无人值守式工作控制。 [0051] Further, the present invention is a three-dimensional printing system further includes forming automatic control means, the automatic control device based on the motion control card, the computer-side control unit set a two-dimensional sheet-like image generating function, process control, motion control, inkjet printer control, motor control dusting, vacuum and temperature control means and many other features, unattended operation control type for the entire three-dimensional printing process.

[0052] 下面将描述按照本发明的三维打印成型系统的相应成型方法。 [0052] The molding method will be appropriate to print a three-dimensional molding system in accordance with the present invention will be described.

[0053] 首先,当自动化控制装置开始运行时,将制件的三维图像以一定的层厚离散成一系列连续的二维片状图像。 [0053] First, when the control means starts the automatic operation, the three-dimensional image of the article at a constant thickness of a continuous series of two-dimensional discretized into a sheet-like image. 储粉腔升降机构带动储粉腔底壁上升一定高度,X向运动机构带动铺粉辊筒由储粉腔向成型腔平动,同时铺粉辊筒转动,将粉末材料从储粉腔添加到成型腔,并将成型腔内的粉末平面压实和平整。 Chu powder chamber elevating mechanism to drive the reservoir powder chamber bottom wall rises to a certain height, X driven dusting drum to the motion mechanism comprises a reservoir powder chamber to the translation molding cavity, while the powder spreading roll rotates, the powder material is added from a reservoir powder chamber to molding cavity, and the cavity forming powder compact and flat plane. X向运动机构将压式电喷头带入成型腔上方的打印区域,计算机调用原喷墨打印机的打印程序,根据每层二维片状图像的信息,控制压电式喷头的Y向运动;同时检测Y向运动情况,保持X向运动与Y向运动协调;同时原喷墨打印机的打印程序根据每层截面的信息,控制喷头选择性地喷射作为粘结剂的溶液。 X-direction movement mechanism, Pressure head into the print area above the molding cavity, the original computer program calls the print ink jet printer, a sheet according to the two-dimensional image information of each layer, controlling the piezoelectric nozzle to the motion Y; while Y-direction motion detection, the motion to the maintaining motion to the X coordinate and Y; inkjet printer print at the same time the original program information according to each section, the head control selectively as a binder solution was sprayed. 喷射有溶液的区域,粉末材料粘结在一起,没有喷射溶液的粉末在成型中起到支撑作用。 A solution in the region of the ejection powder material bonded together, no powder injection solutions play a supporting role in molding. 一层二维片状图像打印完成后,成型腔底壁在成型腔升降机构带动下下降一个层厚的距离。 After the sheet-like layer of the two-dimensional image printing is finished, the molding cavity from the bottom wall of a decrease in the thickness of the molding cavity driven lift mechanism. 压电式喷头和铺粉辊筒回到初始位置,准备下一层二维片状图像的打印。 And dusting piezo head rollers to the initial position, ready to print a two-dimensional layer in a sheet-like image. 然后重复进行以上过程,如此循环,直到所有二维片状图像都打印完成,制件的三维打印成型完成。 The above process is then repeated, and so on until all the images are two-dimensional sheet-like printing is completed, printing three-dimensional molded article is completed. 成型制件在粉腔中经过初期的固化后,除去未粘结粉末便可取出。 After curing the molded article after the initial, unbonded powder is removed in the dust chamber can be removed. 对制件进行相关后处理,进一步提高强度。 Parts related to post-treatment to further improve the strength.

[0054] 本领域的技术人员容易理解,以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等,均应包含在本发明的保护范围之内。 [0054] Those skilled in the art will readily appreciate, the above-described preferred embodiment of the present invention only but are not intended to limit the present invention, any modifications within the spirit and principle of the present invention, equivalent substitutions, and improvements, etc., should be included within the scope of the present invention.

Claims (10)

1. 一种压电式三维打印成型系统,该系统包括箱体及其支撑框架、X向运动机构(11)、 承载结构(21)、粉腔(22)、三维图像分层离散机构、铺粉机构(20)以及压电式喷头(10),其中:所述X向运动机构(11)安装在支撑框架上,包括步进电机(31)、沿着X轴方向设置且相互平行的两个同步带(34),以及横跨在所述平行同步带(34)之间并与所述步进电机(31)相联接的传动轴(36),该传动轴(36)的两端分别安装有同步带轮(32),由此带动与之相连的所述平行同步带(34)执行X轴方向的运动;所述承载结构(21)的两侧分别联接在所述平行同步带(34)上,用于承载所述压电式喷头(10)和铺粉机构(20);所述粉腔(22)设置在箱体内位于所述承载结构(21)之下,包括储粉腔(13)和成型腔(17),分别用于存放构成三维图像实体的粉末材料;所述三维图像分层离散机构用于将需 A piezoelectric 3D printing system, the system comprising a housing and a support frame, X direction movement mechanism (11), carrying structure (21), the powder chamber (22), a layered three-dimensional image discrete means, SHOP powder mechanism (20) and the piezo head (10), wherein: the X-direction movement mechanism (11) mounted on the support frame, comprises a stepper motor (31), disposed along the X-axis direction parallel to each other and two a belt (34), and across the drive shaft (36) between said parallel belt (34) and with said stepping motor (31) coupled to both ends of the shaft (36) respectively attached belt wheel (32), whereby the drive belt connected thereto in parallel (34) performs the movement of the X-axis direction; both sides of the carrier structure (21) are coupled in parallel to said belt ( 34), for carrying the piezoelectric head (10) and a powder spreading means (20); said powder chamber (22) disposed in the housing on the carrier structure (21) below, comprising a powder reservoir chamber (13) and molding cavities (17), respectively, the powder material constituting the entity for storing three-dimensional image; means a discrete stratification of the three-dimensional image required for 成型的三维图像按照一定层高而离散成一系列的连续二维片状图像;所述铺粉机构(20)设置在所述承载结构(21)上随其X向运动而运动,并按照所述三维图像分层离散机构所设定的层高依次将相应高度的粉末材料从所述储粉腔(13)推动转移到成型腔(17);所述压电式喷头(10)设置在所述承载结构(21)上随其X向运动而运动,同时可沿着垂直于X轴方向的Y轴方向往复移动,用于向被所述铺粉机构(20)依次推至成型腔(17) 的粉末材料分别喷射作为粘结剂的溶液,由此执行对粉末材料的粘结成型。 Shaped according to a certain three-dimensional image into a series of discrete storey and a continuous sheet-like two-dimensional images; the dusting means (20) disposed on said carrier structure (21) with an X-direction movement motion, and in accordance with the means layered three-dimensional image set of discrete storey height of the respective sequentially powder material from the powder reservoir chamber (13) to promote the transfer of the molding cavity (17); said piezo head (10) is provided in the with the bearing structure (21) which moves forward movement X, at the same time reciprocally movable along a vertical Y-axis direction in the X-axis direction, to be used for the dusting means (20) are sequentially pushed into the molding cavity (17) the powder material are injected as a binder solution, thereby performing the bonding of the powder molding material.
2.如权利要求I所述的压电式三维打印成型系统,其特征在于,所述铺粉机构(20)包括直流电机(25)和通过联轴器与该直流电机(25)相联接的铺粉辊筒(29),所述铺粉辊筒(29)的两端具有片状挡粉板(28),由此在直流电机的驱动下将粉末材料从所述储粉腔(13)推动转移到成型腔(17)。 A piezoelectric I three-dimensional printing according to claim molding system, wherein said powder spreading means (20) comprises a DC motor (25) and the DC motor via a coupling (25) is coupled powder spreading roller (29), both ends of the powder spreading roller (29) having a sheet-like powder stopper plate (28), thereby driving the DC motor in the powder material from the powder reservoir chamber (13) to promote the transfer molding cavities (17).
3.如权利要求I或2所述的压电式三维打印成型系统,其特征在于,所述压电式喷头(10)连接有溶液供应装置(9),该溶液供应装置(9)用于贮存及向压电式喷头(10)补充作为粘结剂的溶液。 3. I or a piezoelectric 3D printing system according to claim 2, wherein said piezoelectric head (10) is connected to a solution supplying means (9), and the solution supplying means (9) for piezo head and the reservoir (10) was added as a binder.
4.如权利要求1-3任意一项所述的压电式三维打印成型系统,其特征在于,所述粉腔(22)还包括回收腔(16),该回收腔(16)紧贴着所述成型腔(17)设置在其一侧,由上表面开口的箱体构成且其底部具有可开合的抽板,用于回收成型腔(17)多余的粉末材料。 4. The piezoelectric any of claims 1-3 one of the three-dimensional printing molding system, wherein said powder chamber (22) further comprises a recovery chamber (16), the recovery chamber (16) close to the said molding cavity (17) is provided at one side thereof, the housing constituted by the upper surface of the opening and its bottom plate can be opened and closed draw, for recovering the molding cavity (17) of excess powder material.
5.如权利要求1-4任意一项所述的压电式三维打印成型系统,其特征在于,所述三维打印系统还包括刮粉装置(19),该刮粉装置(19)由海绵材料构成安装在所述回收腔(16) 处,用于对运动至此位置的铺粉辊筒表面上的粉末执行擦除和清洁操作。 5. The three-dimensional piezoelectric any one of claims 1-4 as the print forming system, wherein the three-dimensional printing system further comprising doctor means (19), the doctor means (19) of a sponge material configuration mounted at said recovery chamber (16) for performing an erase operation and cleaning of the powder on the roller surface of the powder spreading movement to this position.
6.如权利要求I所述的压电式三维打印成型系统,其特征在于,所述支撑框架由带孔角钢或带孔槽钢焊接而成。 I 6. Piezoelectric dimensional printing as claimed in claim molding system, characterized in that the support frame by welding or perforated angle formed apertured channel.
7.如权利要求I所述的压电式三维打印成型系统,其特征在于,所述储粉腔(13)和成型腔(17)的底壁分别由带孔压板(46)构成,在该带孔压板(46)的下部分别设置有负压吸附机构,该负压吸附机构包括由带凹腔的底板(50)、带孔盖板(51)和完成两者之间密封的第一密封圈(48)共同形成的腔体,与所述带凹腔的底板(50)相连的抽真空装置,覆盖在所述带孔盖板(51)上的滤网(52),以及完成所述滤网(52)、带孔盖板(51)和带孔压板(46)之间密封的第二密封圈(47)。 As claimed in claim piezoelectric printing three-dimensional molding system of claim I, wherein the powder reservoir chamber (13) and molding cavities (17), respectively a bottom wall (46) is constituted by a perforated platen, in which a lower perforated plate (46) are provided with a vacuum suction means, the suction means comprises a vacuum sealed by a bottom plate with a first cavity (50), a perforated cover plate (51) and complete the seal between the ring (48) together form a cavity, the bottom plate (50) with said cavity connected to a vacuum device, the screen cover (52) on the perforated plate (51), and the complete the filter (52), a seal between the perforated plate (51) and the perforated plate (46) a second sealing ring (47).
8.如权利要求I所述的压电式三维打印成型系统,其特征在于,所述储粉腔(13)和成型腔(17)分别包括粉腔升降机构,该粉腔升降机构由步进电机(37)、与该步进电机(37)相联接的蜗轮减速器(44)、以及与所述蜗轮减速器(44)相联接的丝杆螺母副(42)构成。 8. The piezoelectric 3D printing system of claim I, wherein the powder reservoir chamber (13) and molding cavities (17) each comprising a powder chamber lifting mechanism, the lifting mechanism by a stepping powder chamber a motor (37), the stepping motor with a worm reducer (37) coupled (44), and said worm gear (44) coupled to a screw nut (42) configured.
9.如权利要求I所述的压电式三维打印成型系统,其特征在于,所述三维打印成型系统还包括有自动化控制装置,该自动化控制装置用于对整个三维打印成型系统操作过程中的三维图像分层离散、三维方向上的运动控制、抽真空装置以及温度控制等统一进行控制, 由此实现对整个三维打印过程的无人值守式工作。 9. The piezoelectric I three-dimensional printing according to claim molding system, wherein said 3D printing system further comprises automatic control means for the automatic control of the entire apparatus for forming a three-dimensional printing process operation of the system discrete layered three-dimensional image, a three-dimensional direction of the motion control, vacuum and temperature control means are uniformly controlled, thereby realizing work unattended entire three-dimensional printing process.
10.一种使用如权利要求1-9任意一项所述的系统执行三维打印成型的方法,该方法包括:通过三维图像分层离散机构将需要成型的三维图像以一定的层厚离散成一系列连续的二维片状图像;在X向运动机构(11)的带动下,铺粉机构(20)按照所述三维图像分层离散机构所设定的层高依次将相应高度的粉末材料从所述储粉腔(13)推动转移到成型腔(17);X向运动机构(11)将喷头(10)带入成型腔(17)上方的打印区域,并根据二维片状图像信息带动压电式喷头(10)沿X向运动,所述压电式喷头(10)自身沿垂直于X轴方向的Y 向运动并选择性地喷射作为粘结剂的溶液,由此按照二片状维图像信息将粉末材料粘结成型;X向运动机构(11)及承载结构(21)返回初始位置,准备下一个二维片状图像的打印, 然后重复进行以上步骤如此循环,直到所有二维片状图像都打印完成 Use as claimed in claim 10. A system according to any one of claims 1-9 3D printing method is performed, the method comprising: three-dimensional image by means of discrete layered three-dimensional image will require a constant thickness of molded into a series of discrete continuous two-dimensional sheet-like images; X driven forward motion mechanism (11), the powder spreading means (20) in accordance with said three-dimensional image of a hierarchical set of discrete means sequentially storey height of the respective powder material from the said powder storage chamber (13) to promote the transfer of the molding cavity (17); X-direction movement mechanism (11) the head (10) into the molding cavity (17) above the print area, and to drive the sheet-like pressure-dimensional image information in accordance with electric head (10) movement along the X direction, the piezoelectric head (10) itself along the vertical as a binder solution and selectively injected into the movement in the Y X-axis direction, whereby in accordance with the two-dimensional sheet-like image information of the powder bonding material is molded; X-moving mechanism to return to the initial position (11) and the carrying structure (21), the next sheet-like two-dimensional image is printed, and then repeating the above steps to prepare this cycle until all two-dimensional sheet print-like images are completed
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