Active mixing and passive mixing 3D printing nozzle

Abstract

The invention provides an active mixing and passive mixing 3D printing nozzle. The active mixing and passive mixing 3D printing nozzle comprises a feeding chamber, a mixing chamber, a stirring chamberand a nozzle, wherein the feeding chamber, the mixing chamber, the stirring chamber and the nozzle are sequentially arranged from top to bottom. The feeding chamber is in communication with the mixing chamber through three upper pipelines. The mixing chamber communicates with the stirring chamber through three lower pipelines. The nozzle communicates with the bottom of the stirring chamber. A stirrer is arranged in the stirring chamber. The stirrer is driven to rotate by a motor fixed above the feeding chamber. The three upper pipelines and the three lower pipelines are arranged in a staggered mode. Three feeding ports are uniformly arranged on the side wall of the feeding chamber. A compressed air inlet is formed in the upper portion of the feeding chamber. Compressed air enters the feeding chamber from the compressed air inlet, so that a printing material in the feeding chamber sequentially enters the mixing chamber and the stirring chamber. By means of the active mixing and passivemixing 3D printing nozzle, single-nozzle multi-material printing can be achieved, and active mixing and passive mixing are combined, so that the purposes of reducing the cost, saving the volume and improving the printing quality and the printing precision are achieved.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing, and in particular relates to an active and passive hybrid 3D printing nozzle. Background technique [0002] Multi-material 3D printing can manufacture products with multiple functions or multiple physical properties at one time. Since these products are all integrated manufacturing, it can also reduce the number of parts and avoid assembly problems. Designers do not need to consider the limitations of traditional processing during the design process, and realize the integrated free design of products in the true sense. It provides convenience for product innovation and diversity. Although 3D printing technology has made great breakthroughs compared with traditional manufacturing, most of the 3D printers on the market can only print single-material structures. Existing multi-material 3D printers generally have multiple nozzles, which have many shortcomings and limitations: (1) The...

AI Technical Summary

Problems solved by technology

Although 3D printing technology has made a great breakthrough compared with traditional manufacturing, most of the 3D printers on the market can only print single-material structures.

Existing multi-material 3D printers generally have multiple nozzles, which have many shortcomings and limitations: (1) The number of nozzles that can be installed is limited; (2) The types and quantities of materials that can be printed are limited; (3) Multiple nozzles The structure and operation are relatively complicated; (4) the whole equipment is bulky and expensive

At present, multi-material 3D printers with single nozzles tend to mix unevenly, resulting in thick transition areas and chaotic colors.

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