Optimum design method for piezoelectric type sprayer for printing cells

An optimized design and cell printing technology, which is applied in computing, electrical digital data processing, special data processing applications, etc., can solve the problems of low maximum pressure of inkjet channel and clogging of nozzle holes, etc.

Inactive Publication Date: 2013-07-24
XIDIAN UNIV
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Problems solved by technology

[0007] The purpose of the present invention is to avoid the shortcomings of the above-mentioned prior art, and to provide a piezoelectric nozzle optimization design method based on the integration of structure and control, so as to solve the problem of spraying whe

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  • Optimum design method for piezoelectric type sprayer for printing cells
  • Optimum design method for piezoelectric type sprayer for printing cells
  • Optimum design method for piezoelectric type sprayer for printing cells

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Embodiment Construction

[0046] refer to figure 1 , the present invention is used for the optimization design method of the piezoelectric nozzle of cell printing, comprises the following steps:

[0047] Step 1, for a piezoelectric nozzle whose structural shape is preset, the initial structural parameter d of the nozzle, the initial control parameter p of the nozzle and the characteristics of the injected liquid are set.

[0048] The structure of the piezoelectric nozzle is referred to figure 2 , which is mainly composed of piezoelectric actuator, ink storage tank, ink jet channel and nozzle. connected; piezoelectric actuators of equal length are distributed on one side of the pressure pipe;

[0049] The initial structural parameters d of the nozzle, including the length l of the piezoelectric actuator 1 , width w 1 , height h 1 , the length of the pressure pipe l 2 , width w 2 , height h 2 , the length of the connecting pipe l 3 , width w 3 , height h 3 , nozzle length l n , the nozzle in...

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Abstract

The invention discloses an optimum design method for a piezoelectric type sprayer for printing cells. The optimum design method is mainly utilized to solve the problems that a spraying hole is easily plugged and the survival rate of cells is low when a present piezoelectric type sprayer is used for printing the cells. The method comprises the following steps: solving a speed of an appointed node on the basis of a structural limited element model of a piezoelectric actuator; establishing a computational fluid dynamic model of the sprayer and solving according to an initial parameter and the obtained speed to obtain a condition for drop forming and the pressure of each part in the sprayer; solving a pressure wave period according to the obtained pressure, correspondingly adjusting a voltage pulse width and solving a corresponding result again; and by aiming at the demand of a user on the drop forming, establishing an optimized mathematical model and utilizing a value optimizing algorithm to solve to obtain a design parameter which meets the demand of the user and has the minimal passage maximum pressure and design the piezoelectric type sprayer. According to the optimum design method, the problems that the spraying hole is plugged and the survival rate of cells is low when the piezoelectric type sprayer is used for printing a high-viscosity cell solution are solved, and the electromechanical integrated design of the sprayer is realized.

Description

technical field [0001] The invention belongs to the technical field of mechanical structures, and relates to a printer nozzle, in particular to a method for optimizing the design of a piezoelectric nozzle for cell printing. The problem of pore clogging and can effectively improve the survival rate of cells. Background technique [0002] Cell printing technology is an organic combination of rapid prototyping technology and biomanufacturing technology, which can solve problems that are difficult to solve in traditional tissue engineering, and has broad development prospects in the basic and applied research of biomedicine. In traditional tissue engineering, the repair of damaged organs is mainly to attach cells to pre-designed biological scaffold materials after in vitro culture and expansion to form a "cell + scaffold" complex, and then implant them into the body. corresponding lesion site. The cell printing technology uses the principle of self-assembly of cells in develop...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 黄进范健宇徐荣泽张洁白诚胡飞飞
Owner XIDIAN UNIV
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