A fluid direct writing device

Abstract

A Fluid direct writing device is provided with a spray head, a spray head fixture, a sliding table, a guide pipe, a rotating needle core, a drill chuck, an insulating connection rod, a servo motor, a fixing plate, a direct-current power supply, a collection device, a centering block and a circular capillary pipe; the circular capillary pipe is embedded into a micropore of the spray head, and a spinning solution is added into an inner cavity of the spray head; after the centering block and the spray head are matched, the guide pipe is embedded in, the guide pipe is fixed by the spray head fixture, and the spray head fixture is fixed to the sliding table and used for slightly adjusting the stretching distance of a needle tip; the sliding table is fixed to a fixing plate; the rotating needle core penetrates through the circular capillary pipe and is clamped by the drill chuck, the drill chuck is connected with the servo motor through the insulating connection rod, and the servo motor is fixed to the fixing plate; the collection device is arranged under the spray head and connected with a ground wire; the servo motor drives the rotating needle core to rotate, so that the solution is gathered to the needle tip, generates jet flow under the action of electric field force generated by the direct current power supply and is deposited on the collection device through solvent evaporation and curing. Accordingly, continuous, quantitative and rapid response of fluid is achieved, and direct writing is more precise and more stable.

Description

technical field [0001] The invention relates to a fluid direct writing device, in particular to a continuous high-precision fluid direct writing device not limited to the fields of electrospinning, jet printing, direct writing and 3D printing. Background technique [0002] At present, the electronic industry is developing more and more rapidly, and the manufacturing technology of some flexible electronic products has attracted more and more people's attention. Nanofibers have the advantages of good surface effect and small size effect, and can be widely used in some flexible electronics fields. Therefore, the preparation method of nanofibers has also become the focus of attention. In 1934, Formhals invented a device that uses electrostatic repulsion to produce fibers, which is recognized as the beginning of the preparation of fibers by electrospinning technology. Electrospinning is to use electrostatic field to act on viscoelastic fluid to generate spinning jet, and the cha...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of slow response of the existing fluid direct writing liquid supply, difficult spraying of high-concentration solutions, unstable jet flow, etc., to provide the embedded capillary tube in the nozzle system, which can increase the stability of solution transportation and make the solution shear The thinning is more sufficient, the viscosity of the direct writing fluid is higher, the solution transportation can be quantitatively regulated by controlling the rotational speed, and the response speed is fast; the rotating needle core nozzle can effectively constrain the needle tip solution and improve the stability and accuracy of the jet flow Fluid direct writing device

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