Novel spray head for 3D printer

Abstract

The invention discloses a novel spray head for a 3D printer. The novel spray head comprises a spray nozzle and an upper cover arranged on the top surface of the spray nozzle, wherein the spray nozzle comprises a cylindrical spray nozzle body and a conical spray nozzle head arranged at the bottom end of the cylindrical spray nozzle body; a spraying cavity is arranged in the cylindrical spray nozzle body; a material blocking hole is formed in the center of the cylindrical spray nozzle body; three feeding holes are uniformly formed in the side wall of the cylindrical spray nozzle body; feeding tubes are arranged in the feeding holes; a material blocking needle is arranged in the material blocking hole; a concave cavity with an opening in bottom surface is formed in the upper cover; an electromagnet is arranged in the concave cavity; and under the action of the electromagnet, the top of the material blocking needle lifts in the material blocking hole, so that the bottom end of the material blocking needle is movably blocked in a spray nozzle hole of the conical spray nozzle head. The novel spray head is simple in structure; by virtue of three feeding tubes, three base-color raw materials can be simultaneously fed, operation and replacement are simple, convenient and quick, and therefore, printing efficiency is greatly improved; and moreover, the material blocking needle is arranged, so that drainage and wire-drawing can be prevented, and therefore, use stability is greatly improved, applicability is high and practicability is high.

Description

technical field [0001] The invention relates to the technical field of nozzles for 3D printers, in particular to a novel nozzle for 3D printers. Background technique [0002] With the rise of the 3D printing industry, today's 3D printers not only require the stability of the machine's performance, but also require economical, portable, and simple structures for production and use. The premise of stable performance of 3D printers is a reliable nozzle extrusion system, which can be used for long-term uninterrupted normal discharge and accumulation in various environments. However, although the nozzle structures of printers currently on the market are various in specifications and colorful in shape, there are still some defects and deficiencies. This type of structure has the following problems: [0003] At present, most of the nozzles adopt a one-in-one-out structure. Every time a product of a different color is to be printed, the material must be replaced once, which is ver...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the nozzles adopt a one-in-one-out structure. Every time a product of a different color is to be printed, the material must be replaced once, which is very inconvenient and greatly restricts the printing efficiency.

2. At present, there are also color-mixing nozzles on the market, but they all have a two-in-one-out structure. Although they can bring out some different colors, they have great constraints, such as uneven colors and color differences.

[0004] There are defects or deficiencies in the original technology (compared to the technical progress of the present invention): Every time a product of a different color is printed, the material must be replaced once, which is very inconvenient and seriously affects the printing efficiency

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