Large volume syringe pump extruder for desktop 3D printers.
Large volume syringe pump extruder for desktop 3D printers.
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DOI：
10.1016/j.ohx.2018.02.001
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发表时间：
2018-04
期刊：
影响因子：
2.2
通讯作者：
Feinberg AW
中科院分区：
文献类型：
--
作者：
Pusch K;Hinton TJ;Feinberg AW
注射器泵挤出机需要广泛的3D打印应用，包括生物打印，嵌入式打印和食品打印。然而，注射器的质量成为大多数打印平台的主要挑战，需要在速度，分辨率和/或体积方面做出妥协。为了解决这些问题，我们设计了一种注射器泵大容量挤出机（LVE），它与低成本、开源的3D打印机兼容，并在PrintrBot Simple Metal上展示了它的性能。LVE的主要方面包括：(1)它是开源的，与开源硬件和软件兼容，使其价格低廉，并广泛应用于3D打印社区；(2)它使用一个标准的60毫升注射器作为墨水库，有效地增加了普通生物打印机的打印体积；(3)它能够收缩和高速运动；(4)它可以使用直径小至100微米的喷嘴打印流体。当与悬浮水凝胶的自由形式可逆嵌入（FRESH） 3D打印方法结合使用时，可以打印复杂形状/物体。通过使用海藻酸盐作为模型生物材料墨水来制造参数化CAD模型和标准校准对象，证明了LVE的打印性能。
Syringe pump extruders are required for a wide range of 3D printing applications, including bioprinting, embedded printing, and food printing. However, the mass of the syringe becomes a major challenge for most printing platforms, requiring compromises in speed, resolution and/or volume. To address these issues, we have designed a syringe pump large volume extruder (LVE) that is compatible with low-cost, open source 3D printers, and herein demonstrate its performance on a PrintrBot Simple Metal. Key aspects of the LVE include: (1) it is open source and compatible with open source hardware and software, making it inexpensive and widely accessible to the 3D printing community, (2) it utilizes a standard 60 mL syringe as its ink reservoir, effectively increasing print volume of the average bioprinter, (3) it is capable of retraction and high speed movements, and (4) it can print fluids using nozzle diameters as small as 100 µm, enabling the printing of complex shapes/objects when used in conjunction with the freeform reversible embedding of suspended hydrogels (FRESH) 3D printing method. Printing performance of the LVE is demonstrated by utilizing alginate as a model biomaterial ink to fabricate parametric CAD models and standard calibration objects.