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Melt extrusion device, 3D printer, 3D printer control method and application

A 3D printer and melt extrusion technology, applied in the field of 3D printing, can solve the problems that cannot meet the material composition ratio point by point, line by line, layer by layer, the melt contains more bubbles, and the direction of extrusion is twisted, so as to facilitate the mixing of materials Effects of plasticizing, avoiding heavier instability, extending range

Pending Publication Date: 2021-02-26
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of the above defects or improvement needs of the prior art, the present invention provides a melt extrusion device, a 3D printer, a 3D printer control method and its application, the purpose of which is to control the material composition ratio point by point, line by line and layer by layer in the printing process in real time, Realize the complex structure-function integrated forming of composite materials and heterogeneous gradient materials, thereby solving the problem that the extruded melt in the prior art contains many bubbles, the density is not high, and the arbitrary distortion of the extrusion direction cannot be controlled, and it cannot meet the requirements. The technical problem of controlling the proportion of material composition point by point by line by layer

Method used

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  • Melt extrusion device, 3D printer, 3D printer control method and application
  • Melt extrusion device, 3D printer, 3D printer control method and application
  • Melt extrusion device, 3D printer, 3D printer control method and application

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Embodiment Construction

[0050] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0051] An embodiment of the present invention provides a melt extrusion device for melt extrusion of raw materials for 3D printers. The melt extrusion device 2 includes a screw assembly 2A, a nozzle assembly 2B connected to the screw assembly 2A, and the screw assembly 2A includes a shell body and at least two screws 2C arranged in the casing, the threads of adjacent screw 2C are engaged with ea...

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Abstract

The invention discloses a melt extrusion device, a 3D printer, a 3D printer control method and application. The melt extrusion device is used for melt extrusion of raw materials of the 3D printer, themelt extrusion device comprises a screw assembly and a spray head assembly connected with the screw assembly, the screw assembly comprises a shell and at least two screws arranged in the shell, threads of the adjacent screws are meshed with each other, the raw materials are evenly mixed and melted through homodromous rotation of the screws, and the molten raw materials are extruded through the spray head assembly. According to the melt extrusion device, the 3D printer, the 3D printer control method and application, the at least two screws are meshed with each other and rotate in the same direction, the raw materials are gradually molten under rotary shearing of the screws, the shearing rate and shearing stress of a melt at the meshed position are large, good back mixing is generated, andthe distribution mixing capacity of the multiple raw materials is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of 3D printing, and more specifically relates to a melting extrusion device, a 3D printer, a 3D printer control method and an application thereof. Background technique [0002] In recent years, 3D printing technology has developed rapidly. According to different forming methods, it can be mainly divided into fused deposition modeling (FDM), selective laser melting (SLM), laser cladding forming (LENS), selective laser sintering (SLS), optical Solidification forming (SLA), three-dimensional printing forming (3DP), etc. Among them, FDM technology has been widely used because of its low cost, simple principle and small size of equipment. At present, FDM technology mainly uses thermoplastic polymer wires such as PLA and ABS as raw materials, which are sent into the high-temperature melting chamber at 200-240°C by the wire feeding mechanism, and finally sprayed out by the nozzle at a specific position of the hot ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/118B29C64/209B29C64/295B29C64/232B29C64/236B29C64/336B29C64/343B29C64/314B29C64/393B33Y30/00B33Y40/10B33Y50/02
CPCB33Y30/00B33Y50/02B29C64/118B29C64/209B29C64/232B29C64/236B29C64/295B29C64/314B29C64/336B29C64/343B29C64/393B33Y40/10
Inventor 魏青松南亚琪孙殷昊李继康冯琨皓李辽毅曹子怡
Owner HUAZHONG UNIV OF SCI & TECH
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