Printing nozzle of 3D printer

Abstract

The invention discloses a printing nozzle of a 3D printer. The printing nozzle of the 3D printer comprises a frame; a feed port is formed in the top of the frame; a material pipe and a throat pipe arearranged below the feed port; elastic pieces are mounted on two sides of the material pipe in a staggered manner; rubber wheels are elastically mounted at the ends, near the material pipe, of the elastic pieces; a limiting mechanism is arranged between the rubber wheels; the limiting mechanism comprises a driving wheel, and multiple V-shaped wheels connected with the driving wheel through transmission modules; an extrusion head is mounted at the bottom of the throat pipe; and a temperature adjusting module is mounted on the outer side of the lower part of the throat pipe. The printing nozzleof the 3D printer can adjust distances from the rubber wheels to the V-shaped wheels according to the thicknesses of strips, and realizes positioning and limiting of the strips through leading the strips between two wheel bodies of the V-shaped wheels by the rubber wheels.

Description

technical field [0001] The invention relates to a printing nozzle of a 3D printer, which belongs to the technical field of 3D printing equipment. Background technique [0002] 3D printer is a kind of printer, which uses three-dimensional printing, that is, rapid prototyping technology. It is based on a digital model file, using powdered metal or plastic and other bondable materials to construct objects by layer-by-layer printing. Technology; traditional mold manufacturing, industrial design and other fields are used to make models, and are gradually being used in the direct production of some products; Chinese patent application number: 201621044721.3 discloses a 3D printer consumable extrusion mechanism with adjustable torque, It includes a feeding device and a stepping motor, the feeding device includes a third housing with a feed slot and a discharge interface, a feeding roller and a feeding gear that are relatively arranged in the third housing, and the stepping motor an...

AI Technical Summary

Problems solved by technology

[0002] 3D printer is a kind of printer, which uses three-dimensional printing, that is, rapid prototyping technology. It is based on a digital model file, using powdered metal or plastic and other bondable materials to construct objects by layer-by-layer printing. Technology; traditional mold manufacturing, industrial design and other fields are used to make models, and are gradually being used in the direct production of some products; Chinese patent application number: 201621044721.3 discloses a 3D printer consumable extrusion mechanism with adjustable torque, It includes a feeding device and a stepping motor, the feeding device includes a third housing with a feed slot and a discharge interface, a feeding roller and a feeding gear that are relatively arranged in the third housing, and the stepping motor and The feeding gear is driven and connected, and there is also a converter between the stepper motor and the feeding device that changes the torque of the feeding gear by switching the gear transmission path by flipping the position of the switch; by switching the gear transmission path to change the torque, it solves the problem of when feeding If the wire torque is too small, the motor will lose steps and shake violently, which will cause the problem of abnormal wire output from the heating head, which can improve the surface quality and internal quality of the printed part; but the torque-adjustable 3D printer consumable extrusion mechanism in the above technical solution It is impossible to limit the position of the material strip before extrusion, which may easily lead to deviation of the material strip, resulting in blockage of the extrusion head and failure to discharge the material

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