WO2023283874A1 - 一种保持 3d 打印液面高度恒定的装置和方法 - Google Patents

一种保持 3d 打印液面高度恒定的装置和方法 Download PDF

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Publication number
WO2023283874A1
WO2023283874A1 PCT/CN2021/106459 CN2021106459W WO2023283874A1 WO 2023283874 A1 WO2023283874 A1 WO 2023283874A1 CN 2021106459 W CN2021106459 W CN 2021106459W WO 2023283874 A1 WO2023283874 A1 WO 2023283874A1
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WO
WIPO (PCT)
Prior art keywords
printing
liquid level
printing platform
liquid
volume
Prior art date
Application number
PCT/CN2021/106459
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English (en)
French (fr)
Inventor
彭冲
Original Assignee
深圳摩方新材科技有限公司
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Application filed by 深圳摩方新材科技有限公司 filed Critical 深圳摩方新材科技有限公司
Priority to PCT/CN2021/106459 priority Critical patent/WO2023283874A1/zh
Priority to EP21949661.9A priority patent/EP4371737A1/en
Publication of WO2023283874A1 publication Critical patent/WO2023283874A1/zh
Priority to US18/489,881 priority patent/US20240042688A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B29C64/227—Driving means
    • B29C64/232—Driving means for motion along the axis orthogonal to the plane of a layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/10—Processes of additive manufacturing
    • B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
    • B29C64/124—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B29C64/245—Platforms or substrates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B29C64/255—Enclosures for the building material, e.g. powder containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/30—Auxiliary operations or equipment
    • B29C64/307—Handling of material to be used in additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y10/00—Processes of additive manufacturing

Definitions

  • the application belongs to the technical field of 3D printing, and in particular relates to a precision control applied in the process of high-precision photocuring 3D printing.
  • high-precision light-curing 3D printing mostly adopts the scheme of the optical machine on the top and the liquid tank on the bottom.
  • the purpose is to use a thinner release film, or even a self-leveling method, so that the pattern can be more accurately projected on the photosensitive resin.
  • the printing platform With the scheme of optical machine on top, the printing platform will gradually lower and more and more immerse in the liquid tank as the printing progresses, as shown in the left figure of Figure 1.
  • the volume of the sample 301 that has just started printing Small the volume of printing liquid discharged is small, and the height of the release film or liquid surface 501 is low at the beginning of printing.
  • the height of the sample 302 after printing for a period of time continues to increase.
  • the support rod of the printing platform 2 is continuously immersed in the liquid tank 1, and the printing liquid 4 in the liquid tank is discharged to cause the release film or the liquid level 502 to rise after printing a certain height, so that: 1.
  • the release film or liquid surface 501 deviates from the focal plane at the beginning of printing, which further leads to blurring of the projection pattern and greatly reduces the printing accuracy in the XY format; 2.
  • the liquid level continues to rise, increasing the error in the Z direction of the print height.
  • the technical problem to be solved by the present invention is to provide a device and method for keeping the 3D printing liquid level constant in order to solve the above-mentioned error problem caused by the change of the 3D printing liquid level in the prior art.
  • a device for keeping the height of the 3D printing liquid level constant comprising:
  • the printing platform is used to carry the printed samples.
  • the printing platform extends into the liquid tank and can be raised and lowered by the printing lifting device;
  • the liquid level balance block extends into the liquid tank
  • the linkage mechanism is respectively connected to the printing platform and the liquid level balance weight, and can drive the liquid level balance weight to rise when the printing platform is lowered; and the volume of the printing platform and the liquid level balance weight The volumes are in a corresponding relationship, and the volume immersed in the printing liquid when the printing platform is lowered is equal to the volume that the liquid level balance block rises and leaves the printing liquid.
  • the linkage mechanism includes:
  • the synchronous belt is installed on the synchronous belt installation assembly, when one side of the synchronous belt moves in the first direction, the other side moves in the second direction opposite to the first direction; one side of the synchronous belt passes through the
  • the balance weight connecting piece is connected to the liquid level balance weight, and the other side of the timing belt is connected to the printing platform through the printing platform connecting piece.
  • the synchronous belt installation assembly includes an upper fixed pulley and a lower fixed pulley; both the balance weight connector and the printing platform connector are connecting rods.
  • the printing platform includes a platen and a lifting section vertically fixed on one side of the platen;
  • Both the lifting section and the liquid level balance weight are cylindrical.
  • the cross-sectional area of the lifting section is S 1
  • the cross-sectional area of the liquid level balance block is S 2
  • the movement of one side of the synchronous belt speed v 1 , the other side moves at speed v 2 ;
  • the device for keeping the 3D printing liquid level constant in the present invention further includes a balancing weight lifting guide rail, and a slider is provided on the balancing weight lifting guide rail, and the sliding block is connected with the balancing weight connecting piece.
  • a balancer loosening knob is provided at the connection between the slider and the balance weight connecting piece, which is used to loosen the connection between the balance weight connecting piece and the timing belt .
  • the balance weight connecting piece is connected with the liquid level balance weight through the disassembly knob of the balancer.
  • the device for keeping the 3D printing liquid level constant in the present invention also includes a printing platform Z-axis support plate, a printing platform Z-axis, and the printing platform is connected to the printing platform Z-axis support through the printing platform Z-axis On the board; the printing platform Rx leveling mechanism and the printing platform Ry leveling mechanism are fixed on the slider of the Z axis of the printing platform, and the Z axis of the printing platform is used to precisely control the position of the printing platform.
  • a method for keeping the height of the 3D printing liquid level constant comprising the steps of:
  • a liquid level balance block is provided to extend into the liquid tank
  • a linkage mechanism is provided, which is respectively connected to the printing platform and the liquid level balance block, and can drive the liquid level balance block to rise when the printing platform descends; and the volume of the printing platform and the liquid level balance The volume of the block is in a corresponding relationship, and the volume immersed in the printing liquid when the printing platform is lowered is equal to the volume that the liquid level balance block rises and leaves the printing liquid.
  • the liquid level does not change during the printing process, which ensures the accuracy of the print height in the Z direction.
  • Fig. 1 is a schematic diagram of the position of the printing platform and the change of the liquid level before and after the sample is printed by the 3D printer in the prior art;
  • Fig. 2 is a schematic structural diagram of the device for keeping the height of the 3D printing liquid level constant according to the embodiment of the present application;
  • Fig. 3 is a schematic diagram of the cross-sectional structure of the lifting section and the liquid level balance weight of the embodiment of the present application;
  • Fig. 4 is a schematic three-dimensional structure diagram of the device for keeping the height of the 3D printing liquid level constant according to the embodiment of the present application.
  • connection should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application based on specific situations.
  • This embodiment provides a device for keeping the height of the 3D printing liquid level constant, as shown in Figure 2, including:
  • Liquid tank 1 used to store printing liquid
  • the printing platform 2 is used to carry the printed samples, the printing platform 2 protrudes into the liquid tank 1, and can be raised and lowered under the drive of the printing lifting device;
  • the liquid level balance block 6 extends into the liquid tank 1;
  • the linkage mechanism is respectively connected to the printing platform 2 and the liquid level balance block 6, and can drive the liquid level balance block 6 to rise when the printing platform 2 descends; and the volume of the printing platform 2 and the The volume of the liquid level balance block 6 is in a corresponding relationship, satisfying that the volume immersed in the printing liquid when the printing platform 2 is lowered is equal to the volume of the liquid level balance block 6 rising and leaving the printing liquid.
  • the device for keeping the height of the 3D printing liquid level constant in this embodiment due to the decline of the printing platform, the volume immersed in the printing liquid is equal to the volume of the printing liquid that the liquid level balance block rises to ensure 3D printing. During the process, no matter how much the printing platform lifts, the liquid level remains at a fixed height.
  • the linkage mechanism includes:
  • the synchronous belt 9 is installed on the synchronous belt installation assembly, and when one side of the synchronous belt 9 moves in the first direction, the other side moves in the second direction opposite to the first direction; the synchronous belt 9 is One side of the synchronous belt 9 is connected to the printing platform 2 through the printing platform connecting piece 11 through the balance weight connecting piece 10 to the liquid level balancing weight 6 .
  • the device for keeping the 3D printing liquid level constant in this embodiment includes an upper fixed pulley 7 and a lower fixed pulley 8;
  • the connectors 11 are all connecting rods.
  • the device for keeping the 3D printing liquid level constant in this embodiment includes a platen 21 and a lifting section 22 vertically fixed on one side of the platen 21;
  • Both the lifting section 22 and the liquid level balancing weight 6 are cylindrical. Under this setting, it is easier to calculate the volume of the lifting section 22 and the liquid level balancing weight 6 per unit height, which is convenient for linkage.
  • the cross-sectional area of the lifting section 22 is S 1
  • the cross-sectional area of the liquid level balance weight 6 is S 2
  • the moving speed of one side of the synchronous belt 9 is v 1
  • the device for keeping the 3D printing liquid level constant in this embodiment as shown in FIG.
  • the balance weight connector 10 is connected. The stability and precision of the lifting movement of the liquid level balance weight 6 can be guaranteed.
  • the device for keeping the 3D printing liquid level constant in this embodiment as shown in FIG.
  • the connection of the balance weight connector 10 and the synchronous belt 9. This setting is used to solve the problem that it is difficult to take out the printing platform 2 after printing the sample when the printing platform 2 drops to the lowest position and the liquid level balance weight 6 rises to the highest position.
  • the device for keeping the 3D printing liquid level constant in this embodiment makes the liquid level balance block 6 detachable, and when the liquid tank 1 is installed, the liquid level balance block 6 can be installed or disassembled according to specific conditions, so as to avoid installation difficulties.
  • the device for keeping the 3D printing liquid level constant in this embodiment is connected to the Z-axis support plate 24 of the printing platform; the Rx leveling mechanism 25 of the printing platform and the Ry leveling mechanism 23 of the printing platform are fixed on the slider of the Z-axis 26 of the printing platform, and the Z-axis 26 of the printing platform is used for accurate Control the position of print platform 2.
  • the device for keeping the height of the 3D printing liquid level constant in this embodiment Arrange the upper fixed pulley 7 and the lower fixed pulley 8 (blocked in the figure) up and down, and then the synchronous belt 9 is installed between the two pulleys.
  • the device for keeping the 3D printing liquid level constant in this embodiment as shown in FIG. Disassembly structure.
  • This embodiment provides a method for keeping the 3D printing liquid level constant, including steps:
  • a liquid level balance block 6 is provided to extend into the liquid tank 1;
  • a linkage mechanism is provided to connect the printing platform 2 and the liquid level balance block 6 respectively, which can drive the liquid level balance block 6 to rise when the printing platform 2 descends; and the volume of the printing platform 2 and The volume of the liquid level balance block 6 is in a corresponding relationship, so that the volume immersed in the printing liquid when the printing platform 2 is lowered is equal to the volume of the liquid level balance block 6 rising and leaving the printing liquid.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Optics & Photonics (AREA)

Abstract

本申请涉及一种保持3D打印液面高度恒定的装置，包括：液槽，用于存放打印液；打印平台，用于承载打印的样品，打印平台伸入于液槽内，并在打印升降装置的带动下能够升降；液面平衡块，伸入于液槽内；联动机构，分别连接打印平台和液面平衡块，能够在打印平台下降时带动液面平衡块升高；且打印平台的体积和液面平衡块的体积成对应关系，满足打印平台的下降而浸入打印液的体积等于液面平衡块升高而离开打印液的体积。本发明的有益效果是：利用平衡块的体积平衡设备排液体积，确保3D打印过程中，无论打印平台升降多少，液面高度总维持在一个固定高度不变化。

Description

一种保持3D打印液面高度恒定的装置和方法 技术领域
本申请属于3D打印技术领域，尤其是涉及一种应用于高精度光固化3D打印过程中的精度控制。
 背景技术
目前高精度光固化3D打印多采用光机在上、液槽在下的方案，其目的是可以采用更薄的离型膜，甚至采用自流平的方式，使图案更精准的投射到光敏树脂上，以便于得到更高的精度。采用光机在上的方案，打印平台会随着打印的进行，逐步降低、越来越多的浸入液槽中，如图1左边的图所示，打印开始时，刚开始打印的样品301体积小，排开的打印液体积少，刚开始打印时的离型膜或液面501高度较低，随着打印的继续，如图1右边的图所示，打印一段时间的样品302高度不断增大，打印平台2的支撑杆不断浸入液槽1内，排开液槽内的打印液4导致打印一定高度后的离型膜或液面502升高，使：1.原本处于焦面的刚开始打印时的离型膜或液面501偏离焦面，进一步导致投影图案模糊，使打印XY幅面内的精度大大降低；2.液面不断升高，增大了打印件高度Z方向的误差。
 技术问题
本发明要解决的技术问题是：为解决现有技术中3D打印液面高度变化导致产生的上述误差的问题，从而提供一种保持3D打印液面高度恒定的装置和方法。
 技术解决方案
本发明解决其技术问题所采用的技术方案是：
一种保持3D打印液面高度恒定的装置，包括：
液槽，用于存放打印液；
打印平台，用于承载打印的样品，所述打印平台伸入于所述液槽内，并在打印升降装置的带动下能够升降；
液面平衡块，伸入于所述液槽内；
联动机构，分别连接所述打印平台和所述液面平衡块，能够在所述打印平台下降时带动所述液面平衡块升高；且所述打印平台的体积和所述液面平衡块的体积成对应关系，满足所述打印平台的下降而浸入打印液的体积等于所述液面平衡块升高而离开打印液的体积。
优选地，本发明的保持3D打印液面高度恒定的装置，所述联动机构包括：
同步带；
同步带安装组件；
平衡块连接件；
打印平台连接件；
所述同步带安装在所述同步带安装组件上，所述同步带一侧沿第一方向活动时，另一侧沿第一方向反方向的第二方向活动；所述同步带一侧通过所述平衡块连接件连接所述液面平衡块，所述同步带另一侧通过所述打印平台连接件连接所述打印平台。
优选地，本发明的保持3D打印液面高度恒定的装置，所述同步带安装组件包括上端固定滑轮和下端固定滑轮；所述平衡块连接件和打印平台连接件均为连接杆。
优选地，本发明的保持3D打印液面高度恒定的装置，所述打印平台包括台板和垂直固定在所述台板一侧的升降段；
所述升降段和所述液面平衡块均为柱形。
优选地，本发明的保持3D打印液面高度恒定的装置，所述升降段的横截面积为S 1，所述液面平衡块的横截面积为S 2，所述同步带一侧的移动速度为v 1，另一侧的移动速度为v 2；
S 1v 1=-S 2v 2。
优选地，本发明的保持3D打印液面高度恒定的装置，还包括平衡块升降导轨，所述平衡块升降导轨上设有滑块，所述滑块与所述平衡块连接件连接。
优选地，本发明的保持3D打印液面高度恒定的装置，所述滑块与所述平衡块连接件的连接处设有平衡器放松旋钮，用于松开平衡块连接件与同步带的连接。
优选地，本发明的保持3D打印液面高度恒定的装置，所述平衡块连接件与液面平衡块通过平衡器拆装旋钮连接。
优选地，本发明的保持3D打印液面高度恒定的装置，还包括打印平台Z轴支撑板、打印平台Z轴，所述打印平台通过所述打印平台Z轴连接到所述打印平台Z轴支撑板上；打印平台Rx调平机构和打印平台Ry调平机构固定于打印平台Z轴的滑块上，打印平台Z轴用于精确控制打印平台的位置。
一种保持3D打印液面高度恒定的方法，包括步骤：
提供液面平衡块，伸入所述液槽内；
并提供联动机构，分别连接所述打印平台和所述液面平衡块，能够在所述打印平台下降时带动所述液面平衡块升高；且所述打印平台的体积和所述液面平衡块的体积成对应关系，满足所述打印平台的下降而浸入打印液的体积等于所述液面平衡块升高而离开打印液的体积。
 有益效果
本发明的有益效果是：
利用平衡块的体积平衡设备排液体积，确保3D打印过程中，无论打印平台升降多少，液面高度总维持在一个固定高度不变化，达到了：
1.高精度3D打印（尤其是焦深10μm以内的高精度）时不离焦，确保打印件XY幅面内的精度；
2.打印过程液面不变化，保证了打印件高度Z方向的精度。
 附图说明
下面结合附图和实施例对本申请的技术方案进一步说明。
图1是现有技术中3D打印机打印样品前、后打印平台位置及液面变化示意图；
图2是本申请实施例的保持3D打印液面高度恒定的装置结构示意图；
图3是本申请实施例的升降段和液面平衡块横截面结构示意图；
图4是本申请实施例的保持3D打印液面高度恒定的装置三维结构示意图。
图中的附图标记为：
1　液槽
2　打印平台
4　打印液
6　液面平衡块
7　上端固定滑轮
8　下端固定滑轮
9　同步带
10　平衡块连接件
11　打印平台连接件
16　平衡器放松旋钮
17　平衡块升降导轨
18　滑轮支撑杆
20　平衡器拆装旋钮
21　台板
22　升降段
23　打印平台Ry调平机构；
24　Z轴支撑板；
25　打印平台Rx调平机构
26　打印平台Z轴轴
27　打印平台拆装旋钮
301　刚开始打印的样品
302  打印一段时间的样品
501　刚开始打印时的离型膜或液面
502　打印一定高度后的离型膜或液面。
 本发明的实施方式
需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
在本申请的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请保护范围的限制。此外，术语“第一”、“第二”等仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”等的特征可以明示或者隐含地包括一个或者更多个该特征。在本发明创造的描述中，除非另有说明，“多个”的含义是两个或两个以上。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以通过具体情况理解上述术语在本申请中的具体含义。
下面将参考附图并结合实施例来详细说明本申请的技术方案。 实施例
本实施例提供一种保持3D打印液面高度恒定的装置，如图2所示，包括：
液槽1，用于存放打印液；
打印平台2，用于承载打印的样品，所述打印平台2伸入于所述液槽1内，并在打印升降装置的带动下能够升降；
液面平衡块6，伸入于所述液槽1内；
联动机构，分别连接所述打印平台2和所述液面平衡块6，能够在所述打印平台2下降时带动所述液面平衡块6升高；且所述打印平台2的体积和所述液面平衡块6的体积成对应关系，满足所述打印平台2的下降而浸入打印液的体积等于所述液面平衡块6升高而离开打印液的体积。
本实施例的保持3D打印液面高度恒定的装置，如图2所示，由于打印平台的下降而浸入打印液的体积等于所述液面平衡块升高而离开打印液的体积，确保3D打印过程中，无论打印平台升降多少，液面高度总维持在一个固定高度不变化。
优选地，本实施例的保持3D打印液面高度恒定的装置，如图2所示，所述联动机构包括：
同步带9；
同步带安装组件；
平衡块连接件10；
打印平台连接件11；
所述同步带9安装在所述同步带安装组件上，所述同步带9一侧沿第一方向活动时，另一侧沿第一方向反方向的第二方向活动；所述同步带9一侧通过所述平衡块连接件10连接所述液面平衡块6，所述同步带9另一侧通过所述打印平台连接件11连接所述打印平台2。
优选地，本实施例的保持3D打印液面高度恒定的装置，如图2所示，所述同步带安装组件包括上端固定滑轮7和下端固定滑轮8；所述平衡块连接件10和打印平台连接件11均为连接杆。
优选地，本实施例的保持3D打印液面高度恒定的装置，如图3所示，所述打印平台2包括台板21和垂直固定在所述台板21一侧的升降段22；
所述升降段22和所述液面平衡块6均为柱形，在该设置下，更加容易计算升降段22和液面平衡块6单位高度的体积，便于联动。如图3所示，所述升降段22的横截面积为S 1，所述液面平衡块6的横截面积为S 2，所述同步带9一侧的移动速度为v 1，另一侧的移动速度为v 2；满足S 1v 1=-S 2v 2时，满足所述打印平台2的下降而浸入打印液的体积等于所述液面平衡块6升高而离开打印液的体积。
优选地，本实施例的保持3D打印液面高度恒定的装置，如图4所示，还包括平衡块升降导轨17，所述平衡块升降导轨17上设有滑块，所述滑块与所述平衡块连接件10连接。能够保证液面平衡块6升降运动的平稳和精度。
优选地，本实施例的保持3D打印液面高度恒定的装置，如图4所示，所述滑块与所述平衡块连接件10的连接处设有平衡器放松旋钮16，用于松开平衡块连接件10与同步带9的连接。该设置用于解决打印平台2下降到最低处而液面平衡块6上升到最高处时，导致的打印完样品后取出打印平台2操作困难的问题。
优选地，本实施例的保持3D打印液面高度恒定的装置，如图4所示，所述平衡块连接件10与液面平衡块6通过平衡器拆装旋钮20连接。该结构使液面平衡块6可拆卸，在安装液槽1时，可以根据具体情况，安装或者拆卸液面平衡块6，避免安装困难。
优选地，本实施例的保持3D打印液面高度恒定的装置，如图4所示，还包括打印平台Z轴支撑板24、打印平台Z轴26，所述打印平台2通过所述打印平台Z轴26连接到所述打印平台Z轴支撑板24上；打印平台Rx调平机构25和打印平台Ry调平机构23固定于打印平台Z轴26的滑块上，打印平台Z轴26用于精确控制打印平台2的位置。
优选地，本实施例的保持3D打印液面高度恒定的装置，如图4所示，还包括滑轮支撑杆18，滑轮支撑杆18相对于打印平台Z轴支撑板24固定，滑轮支撑杆18一上一下布置上端固定滑轮7和下端固定滑轮8（图中被遮挡），然后同步带9安装在两个滑轮之间。
优选地，本实施例的保持3D打印液面高度恒定的装置，如图4所示，还在打印平台Z轴26上通过打印平台拆装旋钮27固定打印平台2，提供一种打印平台2可拆装结构。
本实施例提供一种保持3D打印液面高度恒定的方法，包括步骤：
提供液面平衡块6，伸入所述液槽1内；
并提供联动机构，分别连接所述打印平台2和所述液面平衡块6，能够在所述打印平台2下降时带动所述液面平衡块6升高；且所述打印平台2的体积和所述液面平衡块6的体积成对应关系，满足所述打印平台2的下降而浸入打印液的体积等于所述液面平衡块6升高而离开打印液的体积。
以上述依据本申请的理想实施例为启示，通过上述的说明内容，相关工作人员完全可以在不偏离本项申请技术思想的范围内，进行多样的变更以及修改。本项申请的技术性范围并不局限于说明书上的内容，必须要根据权利要求范围来确定其技术性范围。

Claims (10)

  1. 一种保持3D打印液面高度恒定的装置，其特征在于，包括：
    液槽（1），用于存放打印液；
    打印平台（2），用于承载打印的样品，所述打印平台（2）伸入于所述液槽（1）内，并在打印升降装置的带动下能够升降；
    液面平衡块（6），伸入于所述液槽（1）内；
    联动机构，分别连接所述打印平台（2）和所述液面平衡块（6），能够在所述打印平台（2）下降时带动所述液面平衡块（6）升高；且所述打印平台（2）的体积和所述液面平衡块（6）的体积成对应关系，满足所述打印平台（2）的下降而浸入打印液的体积等于所述液面平衡块（6）升高而离开打印液的体积。
  2. 根据权利要求1所述的保持3D打印液面高度恒定的装置，其特征在于，所述联动机构包括：
    同步带（9）；
    同步带安装组件；
    平衡块连接件（10）；
    打印平台连接件（11）；
    所述同步带（9）安装在所述同步带安装组件上，所述同步带（9）一侧沿第一方向活动时，另一侧沿第一方向反方向的第二方向活动；所述同步带（9）一侧通过所述平衡块连接件（10）连接所述液面平衡块（6），所述同步带（9）另一侧通过所述打印平台连接件（11）连接所述打印平台（2）。
  3. 根据权利要求2所述的保持3D打印液面高度恒定的装置，其特征在于，所述同步带安装组件包括上端固定滑轮（7）和下端固定滑轮（8）；所述平衡块连接件（10）和打印平台连接件（11）均为连接杆。
  4. 根据权利要求2所述的保持3D打印液面高度恒定的装置，其特征在于，所述打印平台（2）包括台板（21）和垂直固定在所述台板（21）一侧的升降段（22）；
    所述升降段（22）和所述液面平衡块（6）均为柱形。
  5. 根据权利要求4所述的保持3D打印液面高度恒定的装置，其特征在于，所述升降段（22）的横截面积为S 1，所述液面平衡块（6）的横截面积为S 2，所述同步带（9）一侧的移动速度为v 1，另一侧的移动速度为v 2；
    S 1v 1=-S 2v 2。
  6. 根据权利要求2-5任一项所述的保持3D打印液面高度恒定的装置，其特征在于，还包括平衡块升降导轨（17），所述平衡块升降导轨（17）上设有滑块，所述滑块与所述平衡块连接件（10）连接。
  7. 根据权利要求6所述的保持3D打印液面高度恒定的装置，其特征在于，所述滑块与所述平衡块连接件（10）的连接处设有平衡器放松旋钮（16），用于松开平衡块连接件（10）与同步带（9）的连接。
  8. 根据权利要求7所述的保持3D打印液面高度恒定的装置，其特征在于，所述平衡块连接件（10）与液面平衡块（6）通过平衡器拆装旋钮（20）连接。
  9. 根据权利要求1-5任一项所述的保持3D打印液面高度恒定的装置，其特征在于，还包括打印平台Z轴支撑板（24）、打印平台Z轴（26），所述打印平台（2）通过所述打印平台Z轴（26）连接到所述打印平台Z轴支撑板（24）上；打印平台Rx调平机构（25）和打印平台Ry调平机构（23）固定于打印平台Z轴（26）的滑块上，打印平台Z轴（26）用于精确控制打印平台（2）的位置。
  10. 一种保持3D打印液面高度恒定的方法，其特征在于，包括步骤：
    提供液面平衡块（6），伸入所述液槽（1）内；
    并提供联动机构，分别连接所述打印平台（2）和所述液面平衡块（6），能够在所述打印平台（2）下降时带动所述液面平衡块（6）升高；且所述打印平台（2）的体积和所述液面平衡块（6）的体积成对应关系，满足所述打印平台（2）的下降而浸入打印液的体积等于所述液面平衡块（6）升高而离开打印液的体积。
PCT/CN2021/106459 2021-07-15 2021-07-15 一种保持 3d 打印液面高度恒定的装置和方法 WO2023283874A1 (zh)

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