3D drawing pen

Abstract

The invention discloses a 3D drawing pen which is small in size and long in service life. The 3D drawing pen comprises a pen shell, a feeding device, a heating device and a control chip; a feeding opening is formed in the pen shell; the feeding device comprises a feeding motor, a transmission mechanism and a feeding mechanism, the feeding motor is arranged along the vertical direction of the pen shell, a one-head worm is arranged on a rotating shaft of the feeding motor and is connected with the transmission mechanism, and the feeding mechanism comprises a feeding gear and an assisting wheel; the transmission mechanism is connected with the feeding gear, and a wire feeding gap is arranged between the feeding gear and the assisting wheel; the heating device comprises a spraying head and a heating cavity, and the feeding motor and the heating cavity are both electrically connected with the control chip; and the pen shell comprises a head cover, a shell body and a tail cover, the head cover is of a conic structure with holes in two ends, arc-shaped radiating holes are formed in the surface of the head cover, the shell body is of a cylindrical cavity structure, a power socket is arranged at an opening part of the top of the shell body, and a ventilation opening is further arranged on the top face of the tail cover.

Description

technical field [0001] The invention relates to the technical field of a 3D drawing pen, in particular to a 3D drawing pen with small volume and long service life. Background technique [0002] With the rapid development of 3D printing technology, 3D printing technology is more and more widely used in people's daily life. 3D printing pen is popular as a tool that can conveniently construct three-dimensional models. It can be used for graffiti A personalized three-dimensional model can also cultivate the user's spatial imagination. [0003] Worm drive is a kind of transmission that transmits motion and power between two axes that are interlaced in space. The angle between the two axes can be any value, and the commonly used one is 90°. Worm drives are used to transmit motion and power between staggered shafts. The worm with only one helix is ​​called a single-head worm, that is, the worm rotates once and the turbine rotates one tooth. If there are two helixes on the worm, i...

AI Technical Summary

Problems solved by technology

In order to take care of the horizontally installed motor, either the whole drawing pen is very thick and difficult to hold, which affects the ease of use and aesthetics, or the size of the motor is reduced, which will result in a small motor selection, resulting in increased cost and / or Insufficient driving force, more importantly, the motor will lead to heavy weight of the drawing pen, unstable center of gravity, poor sense of balance, and errors are easy to occur during operation; in addition, the feeding motor is usually connected to the transmission device through a double-headed worm, but the transmission is relatively small , it is easy to cause insufficient driving force of the motor, or the motor needs to provide greater power; in addition, the transmission mechanism and the feeding mechanism of the feeding device are usually fixed by a single-sided fixing plate, which is likely to cause unbalanced transmission and tilt to one side. The transmission mechanism and the feeding mechanism cause wear and tear, which reduces its service life; in addition, because the 3D drawing pen uses heating to melt the consumables, it generates a lot of heat, and if it is not warmed up in time, it is easy to cause damage to its own parts and reduce its service life.

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