Extrusion type three-dimensional (3D) printing concrete extrusion system

Abstract

The invention discloses an extrusion type three-dimensional (3D) printing concrete extrusion system, and relates to the technical field of 3D printing mechanical equipment. The extrusion type 3D printing concrete extrusion system comprises a horizontally-arranged material extruding bin, wherein the top end of the middle of the material extruding bin is communicated with a feeding pipe; an extruder is movably arranged in the material extruding bin; an arc-shaped groove is formed in one side of the extruder; the center line of the arc-shaped groove coincides with the horizontal center line of the material extruding bin; the two ends of the extruder are fixedly connected with extruder rods respectively; the ends, away from the extruder, of the extruder rods are arranged in extruder rod fixing pipes in a penetrating mode respectively; the ends, away from the extruder rods, of the extruder rod fixing pipes are fixedly arranged on the inner walls of the two ends of the material extruding bin; the bottoms of the two ends of the material extruding bin communicate with the two ends of a conveying pipe of a U-shaped structure correspondingly; the bottom of the conveying pipe communicates with a discharging pipe; a motor is arranged on one side of the material extruding bin; an output shaft of the motor is connected with a Z-shaped transmission rod; and the tail end of the Z-shaped transmission rod is arranged in the arc-shaped groove in a sliding mode. According to the extrusion type 3D printing concrete extrusion system provided by the invention, uniform and stable extrusion of printable materials is achieved through reciprocating motion of the extruder.

Description

technical field [0001] The invention relates to the technical field of 3D printing machinery and equipment, in particular to an extrusion 3D printing concrete extrusion system. Background technique [0002] As a new construction technology, concrete 3D printing technology has become the trend of the times leading technological innovation in the field of construction. Currently, the 3D printer extrusion system uses a screw shaft to extrude concrete materials. The design of the extrusion system largely determines the material discharge method and the performance of the material and structure. Using the extrusion method of the spiral stirring shaft, there are many bubbles and voids inside the material, and it is difficult to effectively solve the problem of printing quality. [0003] The patent with the publication number CN208133209U proposes a concrete 3D printing extrusion head, which mainly includes a motor, a fixed cover, a feeding pipe, a spiral stirring shaft, a nozzle,...

AI Technical Summary

Problems solved by technology

However, in the process of practical engineering application, more attention is paid to the fact that cement-based materials can be printed with high quality under the premise of meeting the printability. Existing equipment is difficult to meet the above requirements

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