3D printing system based on 4-PSS/PS parallel mechanism

Abstract

The invention discloses a 3D printing system based on a 4-PSS/PS parallel mechanism. The 3D printing system comprises a top plate and a bottom plate which are parallel to each other, the top plate andthe bottom plate are connected through a guide rail, a ball screw a is arranged in the guide rail in the axial direction, the ball screw a is sleeved with a slider, the slider and a branched chain are connected through a spherical pair, and the other end of the branched chain is connected with an upper platform through a spherical pair; in addition, the upper platform is also movably connected with a constrained branched chain, the constrained branched chain is sleeved with a cylinder barrel, the other end of the cylinder barrel is fixed to the top plate, and the lower surface of the upper platform is fixedly provided with a nozzle; and the bottom plate is provided with a moving platform moving along the X-axis or the Y-axis. The printing space of the 3D printer is increased. The attitudeof the nozzle in the space is controlled by the upper platform on the 4-PSS/PS parallel mechanism, it is guaranteed that the nozzle is always perpendicular to the complex surface of a printed object,the degree of fusion and smoothness of the printed materials during feeding of the nozzle is improved, and the print efficiency and print quality of the printed objects are further improved.

Description

technical field [0001] The invention belongs to the technical field of printers, and relates to a 3D printing system based on a 4-PSS / PS parallel mechanism. Background technique [0002] At present, the working structure of 3D printers is mostly a series mechanism, and the printing form is relatively simple. The disadvantages are: poor processing accuracy, extremely low production efficiency, and single shape of the printed object. When the shape of the printed object is complex or has a high-dimensional surface, The fusion of the printed object is poor, and the nozzle of the 3D printer cannot always be kept perpendicular to the surface of the printed object. Contents of the invention [0003] The purpose of the present invention is to provide a 3D printing system based on a 4-PSS / PS parallel mechanism, which can improve printing efficiency. [0004] P is the abbreviation of prismatic joint (moving joint), and S is the abbreviation of spherical joint (spherical joint). ...

AI Technical Summary

Problems solved by technology

[0002] At present, the working structure of 3D printers is mostly a series mechanism, and the printing form is relatively simple. The disadvantages are: poor processing accuracy, extremely low production efficiency, and single shape of the printed object. When the shape of the printed object is complex or has a high-dimensional surface, The fusion of the printed object is poor, and the nozzle of the 3D printer cannot always be kept perpendicular to the surface of the printed object, etc.

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