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A plastic 3d printing device

A 3D printing and plastic technology, used in metal processing equipment, 3D object support structures, processing material handling, etc., can solve the problems of poor impact resistance and low bonding strength of components, and achieve enhanced bonding force, increased contact area, Strong binding effect

Active Publication Date: 2018-11-02
宜宾市创世纪机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] A notable feature of the melt extrusion molding (FDM) process is that the material is formed by layer-by-layer stacking, and the bonding strength between layers is not high, resulting in poor impact resistance of the component, which also limits its use as a structural part. A major reason to apply

Method used

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  • A plastic 3d printing device
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  • A plastic 3d printing device

Examples

Experimental program
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Effect test

example 1

[0044] According to the equipment and method proposed by the present invention, the 3D printing equipment of melt extrusion molding is used to manufacture the polylactic acid sample, and the impact strength of the 3D printed polylactic acid sample is tested with a cantilever beam impact testing machine according to the method of GB / T 1843-2008 , compared with splines produced by conventional melt extrusion (without spraying solvent).

[0045] Preparation parameters: The size of the prepared rectangular spline is 80*10*4mm. The layer thickness was 50 microns, and the spraying of solvent droplets was carried out each time the material was deposited to a thickness of 1.5 mm. The solvent is dimethylformamide, and the diameter of the corroded micropores is between 200-500 microns. The total area of ​​micropores corroded by each jet is 40% of the total area of ​​each layer of material. Superimpose layer by layer along the length direction to make 5 rectangular splines as a group. ...

example 2

[0047] Using the above method, a sample strip of polyvinyl alcohol was made and tested for comparison. The layer thickness was 40 microns, and solvent droplets were sprayed each time the material was deposited to a thickness of 1 mm. The solvent is dimethyl sulfoxide, and the micropore diameter is between 100-300 microns. The size, shape, and molding method of the spline are the same as in Example 1. The impact strength of the spline made by the device proposed by the invention is 7% higher than that of the spline made by the traditional method.

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Abstract

The invention discloses plastic 3D printing equipment. The plastic 3D printing equipment comprises a plastic supply device, a hot nozzle connected with the plastic supply device and a receiving base located below the hot nozzle; the plastic supply device is controlled by a control system to supply plastic to the hot nozzle, when the plastic passes through the hot nozzle, the plastic is heated to be in a molten state to be sprayed out and deposit on the receiving base, and the equipment further comprises a treatment agent supply device and a microhole spraying head connected with the treatment agent supply device; the treatment agent supply device is controlled by the control system to supply a treatment agent capable of corroding or dissolving plastic to the microhole spraying head, and the treatment agent is sprayed to the plastic depositing on the receiving base through the microhole spraying head and acts on the deposited plastic so as to form micro holes in the surface of the plastic; and the equipment is used for carrying out plastic 3D printing, and the interlayer bonding force of a 3D printing component can be obviously improved.

Description

technical field [0001] The invention relates to a plastic 3D printing device. Background technique [0002] Fusion extrusion molding (FDM) is one of the most common techniques used to produce plastic 3D parts. The materials used are generally filamentous thermoplastic materials, such as PLA, ABS, PC, nylon, etc. First, the filamentary material is heated and melted as it passes through the nozzle. The nozzle moves according to the cross-sectional profile and filling trajectory of the three-dimensional drawing of the part, and simultaneously extrudes the molten material. The material is bonded and solidified with the surrounding material, and then another layer is deposited on the solidified material. In this way of layer-by-layer superposition, three-dimensional parts are finally formed. This process does not use a laser, is simple to maintain, and has low cost. It is mostly used in the design and manufacture of models that do not require high precision and physical and ch...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C64/118B29C64/307B33Y10/00B33Y40/00
CPCB33Y10/00B33Y40/00
Inventor 闫国栋王长明
Owner 宜宾市创世纪机械有限公司