Rigid leveling mechanism for printing platform of 3D printer

Abstract

The invention discloses a rigid leveling mechanism for a printing platform of a 3D printer. When leveling need to be conducted, the printing platform is taken down at first, small screws and lock nuts are unscrewed, and three leveling screws are moderately adjusted, so that a base plate is relatively parallel to a printing head; the small screws and the lock nuts are screwed, and then, the printing platform is placed on the base plate after upper and lower magnets attract mutually, so that the printing platform is relatively parallel to the printing head. In the leveling process, the base plate cannot be vibrated or shaken when the leveling screws are screwed or unscrewed, and thus a planometer can quickly work conveniently. After the base plate is leveled, the base plate is fundamentally not staggered relative to the leveling screws in the small screw screwing process, and the effect that the base plate is parallel to the printing head relatively can be ensured after the small screws are screwed. According to the rigid leveling mechanism for the printing platform of the 3D printer, the rigid leveling mechanism is formed by improving a traditional leveling mechanism for a printing platform of a 3D printer, the printing platform cannot be vibrated or shaken in the printing process after leveling and locking are conducted, and the size precision and surface flatness of a printed product are improved advantageously; and in addition, leveling operation is convenient, the economical and practical effects are achieved, the structure is simple, and the design is reasonable.

Description

technical field [0001] The invention belongs to the technical field of 3D printers, and in particular relates to a rigid leveling mechanism of a printing platform in a 3D printer. Background technique [0002] The core of 3D printing is to convert the complex 3D shape of the required workpiece into a simple combination of 2D sections through slicing, and directly form the 3D workpiece on the computer-controlled additive manufacturing equipment according to the 3D computer-aided design (CAD) model of the workpiece. . At present, the existing 3D printers can be divided into five types: 1. In-container photopolymerization (SLA) molding machines, which use laser beams to solidify liquid photosensitive resins; 2. Powder bed sintering / melting (SLS / SLM / EBM) Molding machine, using laser beam / electron beam sintering / melting powder to form; 3. Sheet lamination (LOM) molding machine, using laser beam, carving knife or ultrasonic to shape the sheet; 4. Binder jetting (3DP) Molding mac...

AI Technical Summary

Problems solved by technology

The most popular on the market is material extrusion (FDM) molding machine, also known as fused deposition molding machine. For 3D printers based on this principle, the printing platform leveling method usually adopts the soft leveling method of screws and springs. There is a certain degree of vibration and jitter in this leveling method, which will affect the printed product, increase the size error of the product, and make the surface rough

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