A 3D printed pneumatically controlled extrusion component

Abstract

The invention relates to a 3D printing pneumatically controlled extrusion assembly, including a 3D printer main board, a signal processing main board, a pressurized gas module, a pressure reducing valve, a pneumatic solenoid valve and an extrusion head; the 3D printer main board sends intermittent stepper motor pulse signals , the signal processing main board converts the intermittent stepper motor pulse control signal into a continuous extrusion motion control signal; the pressurized gas module provides the first pressurized gas, and the pressure reducing valve converts the first pressurized gas into the second pressurized gas pressurized gas; the pneumatic solenoid valve controls the opening or closing of the second pressurized gas according to the continuous extrusion movement control signal; the extrusion head controls the extrusion speed of the 3D printing material according to the pressure of the second pressurized gas. In the present invention, the control of the stepping motor is switched to the control of the pneumatic solenoid valve, so as to realize high-precision, fast-response pneumatic control extrusion printing.

Description

technical field [0001] The invention relates to the technical field of 3D printing control, in particular to a 3D printing pneumatic control extrusion component. Background technique [0002] 3D printing is a kind of rapid prototyping technology. It is a technology based on digital model files and using bondable materials such as powdered metal or plastic wires to construct objects by layer-by-layer printing. Its most prominent advantage is that it can directly generate parts of any shape from computer graphics data without machining or any molds, thereby greatly shortening the product development cycle and improving productivity. [0003] However, most of the desktop and industrial 3D printers currently on the market mainly print plastic filaments. The main reason is that the extruder can only adapt to a single linear filament, such as PLA, TPU and ABS. [0004] For 3D gel printing and paste printing, due to the limitations of desktop and industrial 3D printer control syst...

AI Technical Summary

Problems solved by technology

In the patent CN110744814A and the patent CN111216357A, although the control method of pneumatic and stepping motor screw linkage is proposed, it cannot overcome the defects such as the slow response speed of the screw extrusion method and the piston extrusion method, and it is often impossible to switch between frequent pauses and extrusion. Response, so the application in the field of 3D printing is very limited

Compared with it, pneumatic control is simpler and quicker, but as shown in patent CN111267337A, the pneumatic control system is complicated and requires a unique control system. Therefore, the common pneumatic control 3D printers that can print gels and pastes are expensive, and The printing function is single and cannot be compatible with traditional wire 3D printers, and requires unique design and programming software to complete printing

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