Automatic electrostatic spinning device

Abstract

The invention discloses an automatic electrostatic spinning device. A spinning needle head and a spinning solution feed device are connected with a transversing mechanism; the transversing mechanism is provided with an adjustable lead limit switch for controlling width of non-weaving cloth; the transversing mechanism and a fiber collecting device are respectively connected with a computer control device; the fiber collecting device is provided with a collecting mechanism and a lifting mechanism, and can adjust distance between a receiving electrode and the collecting mechanism by the lifting mechanism, so as to adjust fineness of the non-weaving cloth and set length and thickness of the cloth; transverse speed and collecting speed of the spinning device are matched, so that the non-weaving cloth can be continuously and evenly weaved, and polymer solution can be added during weaving. The automatic electrostatic spinning device is provided with an automatic control device, thereby facilitating weaving, reducing human resource, saving time, and improving production efficiency.

Description

Technical field: [0001] The invention relates to an electrostatic spinning device, in particular to an automatic electrostatic spinning device. Background technique: [0002] Electrospinning technology began in the 1930s and is a commonly used method for the direct production of nanofibers. The method has short technological process and simple operation, and its products are mostly used in high-tech fields such as high-efficiency filter materials, biomedical materials, and chemical sensors. In recent years, in order to improve the production efficiency of electrospinning, people have done more research on the spinning device. A multi-nozzle electrospinning device for coaxial composite continuous nano / micro fibers. In the multi-nozzle electrospinning system, the nanofibers ejected from the peripheral nozzles are electrostatically repelled by the nanofibers with the same charge ejected from the adjacent nozzles. , causing the nanofibers ejected from the surrounding nozzles t...

AI Technical Summary

Problems solved by technology

A multi-nozzle electrospinning device for coaxial composite continuous nano / micro fibers. In the multi-nozzle electrospinning system, the nanofibers ejected from the peripheral nozzles are electrostatically repelled by the nanofibers with the same charge ejected from the adjacent nozzles. , causing the nanofibers ejected from the surrounding nozzles to scatter and affect the volatilization of the solvent. Therefore, the arrangement of the nozzles in the current multi-needle electrospinning device is relatively sparse. Generally, the distance between two adjacent nozzles is 10-20 cm, which greatly restricts the output. Improvement and complex process, difficult to control; for the production of high-efficiency continuous electrospinning nanofiber nonwovens, using sputtering or liquid supply, by dripping the polymer solution from a uniform distributor on a metal roller, The metal drum is charged with high voltage and rotates at a certain speed. The spinning solution produces Taylor cones on the surface of the metal drum under the combined action of electrostatic force, gravity, and centrifugal force, thereby spinning

However, the experiment found that the sputtering solution supply method will cause the solution to splash when the solution drops on the metal drum, especially when the solution viscosity is low, the droplets will directly splash to the fiber receiving net, which not only affects the production, but also Will affect the quality of fiber nonwovens

In addition, it is difficult for the sputtering supply device to control the distribution of the solution on the surface of the metal drum, which will cause uneven distribution of the solution, resulting in the distribution of Taylor cones, and finally make the distribution of fibers deposited on the fiber receiving net uneven, and the width, thickness, length None adjustable

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