Broadband piezoelectric vibrating scraper, spraying type 3D printing of broadband piezoelectric vibrating scraper, and printing method

A piezoelectric vibration and 3D printing technology, applied in 3D object support structure, coating device, processing and manufacturing, etc., can solve the problem of easy residual air bubbles, affecting the quality of slurry molding, and uneven surface flatness and surface finish of sprayed slurry. Good and other problems, to achieve the effect of reducing friction and high finish

Active Publication Date: 2017-05-31
PEKING UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main problems in the spraying and painting process of the existing spraying or melt painting 3D printers are: (1) the problem of precise control of the thickness of the sprayed slurry layer at the micron scale; (2) the thickness of the slurry in the spraying proc

Method used

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  • Broadband piezoelectric vibrating scraper, spraying type 3D printing of broadband piezoelectric vibrating scraper, and printing method
  • Broadband piezoelectric vibrating scraper, spraying type 3D printing of broadband piezoelectric vibrating scraper, and printing method
  • Broadband piezoelectric vibrating scraper, spraying type 3D printing of broadband piezoelectric vibrating scraper, and printing method

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Embodiment Construction

[0037] The present invention will be further elaborated below through specific embodiments in conjunction with the accompanying drawings.

[0038] Such as figure 1 Shown in (a), the piezoelectric vibrating scraper of the present embodiment comprises: piezoelectric element 11, vibrating blade 12, handle of a knife 13 and cutter head 14; Wherein, piezoelectric element 11 is bonded on vibrating blade 12 by epoxy resin respectively On both sides of the surface, a layered composite structure of sandwich structure is formed; the knife handle 13 of the vibrating blade is used to fix the scraper; the top of the vibrating blade 12 is equipped with a knife head 14; the piezoelectric element 11 is connected to an external drive system. Such as figure 1 As shown in (b), the top of the vibrating blade can be equipped with cutter heads of different shapes, such as triangular, cylindrical or wedge-shaped cutter heads. Such as figure 1 As shown in (c), the polarization of the piezoelectric...

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Abstract

The invention discloses a broadband piezoelectric vibrating scraper, spraying type 3D printing of the broadband piezoelectric vibrating scraper, and a printing method. According to the piezoelectric vibrating scraper disclosed by the invention, a tool bit in high-frequency vibration scraps the surface of size, and an ultrasonic shock effect is generated, so that bubbles in the size are effectively removed; besides, through the high-frequency vibration of the tool bit, the friction between the tool bit and the surface of the size is effectively reduced, so that the effect of flatting the surface of the size is achieved, and high smooth finish is obtained; the vibration amplitude and the working frequency of the piezoelectric vibrating scraper can be comprehensively adjusted according to materials, viscosity or granularity and the like of the spray size to obtain the best scraping and coating effect; and through the precise control of the vertical distance between the tool bit and a 3D printer moving platform, the layer thickness of a printed layer is precisely controlled, and the control of the thickness of the printed layer in micrometer scale is realized. The piezoelectric vibrating scraper provided by the invention well makes up for deficiencies of a conventional piezoelectric sprayer in the aspects of the control of the thickness of the printed layer, size shaping quality, the smooth finish of the surface of the printing size, and the like.

Description

technical field [0001] The invention relates to 3D printing additive manufacturing technology, in particular to a piezoelectric vibration scraper applied to spraying 3D printing additive manufacturing and its spraying 3D printing and printing method. Background technique [0002] 3D printing (3D printing) is an emerging technology that is rapidly developing in the manufacturing field. 3D printing is a form of additive manufacturing. Its concept is different from the traditional removal-type manufacturing method, and it has advantages in many aspects. Relying on the cutting-edge technology in multiple disciplines, 3D printers have been applied in the fields of electronics industry, biomedicine, medical equipment, education, etc., and have broad development prospects. Taking a spraying or melt painting 3D printing technology as an example, its main process includes: using computer software to design a three-dimensional structure pattern, and then using a 3D printing molding de...

Claims

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Application Information

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IPC IPC(8): B29C64/112B29C64/188B29C64/205B29C64/214B33Y30/00B33Y10/00
Inventor 董蜀湘余洋沈心怡陈曦吴金根
Owner PEKING UNIV
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