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Direct-current pulse-controlled molten drop deposition 3D printing device and printing method

A pulse control, 3D printing technology, applied in the field of 3D printing, can solve the problems of difficulty in improving printing speed and efficiency, large influence of external factors on droplets, slow response speed of melt droplets, etc. Fast, easy-to-manipulate effects

Inactive Publication Date: 2017-01-11
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the technical defects of the above droplet injection methods mainly include: complex device, large droplet influence by external factors, insufficient surface precision of deposited parts; slow response speed of melt droplet formation process, low injection frequency, and difficulty in improving printing speed and efficiency

Method used

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  • Direct-current pulse-controlled molten drop deposition 3D printing device and printing method
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  • Direct-current pulse-controlled molten drop deposition 3D printing device and printing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Taking aluminum alloy material as an example, the specific steps are as follows:

[0033] Step 1, using computer-aided software to design a three-dimensional part model to be printed, and then performing hierarchical processing on the part model, so as to obtain contour data and filling data of each layer;

[0034] Step 2: Weigh 50.0g of ZL102 aluminum alloy raw material and put it into the crucible, heat it with nickel-chromium electric heating wire, control the temperature to rise to 650°C, so that the sample is fully melted into a uniform melt;

[0035] Step 3: Open the nozzle head, connect the pulse high-voltage generator to 220V power supply and adjust the output voltage to 5.6kV to make the voltage polarity positive, generate a rectangular pulse voltage, and ground the receiving platform.

[0036] Step 4: Turn on the three-dimensional movement device of the forming workbench, adjust the distance between the control nozzle and the workbench to 2cm, and start to fal...

Embodiment 2

[0039] Taking the isotactic polypropylene material as an example, the specific steps are as follows:

[0040] Step 1, using computer-aided software to design a three-dimensional part model to be printed, and then performing hierarchical processing on the part model, so as to obtain contour data and filling data of each layer;

[0041] Step 2, weighing 100 g of isotactic polypropylene particles into a crucible in an induction furnace, and heating to 290° C. through a heating furnace to fully melt the sample into a uniform liquid state;

[0042] Step 3: Open the nozzle head, connect the pulse high-voltage generator to 220V power supply and adjust the output voltage to 5.1kV to make the voltage polarity positive, generate a rectangular pulse voltage, and ground the receiving platform.

[0043] Step 4: Turn on the three-dimensional movement device of the forming workbench, adjust the distance between the control nozzle and the workbench to 2cm, and start to fall at a certain frequen...

Embodiment 3

[0046] Taking ABS plastic as an example, the specific steps are as follows:

[0047] Step 1, using computer-aided software to design a three-dimensional part model to be printed, and then performing hierarchical processing on the part model, so as to obtain contour data and filling data of each layer;

[0048] Step 2, weighing 150 grams of raw material ABS plastic into the crucible in the induction furnace, heating the temperature to 220°C through the heating furnace control, so that the sample is fully melted into a uniform liquid state;

[0049] Step 3: Open the nozzle head, connect the pulse high-voltage generator to 220V power supply and adjust the output voltage to 6kV to make the voltage polarity positive, generate a rectangular pulse voltage, and ground the receiving platform.

[0050] Step 4: Turn on the three-dimensional movement device of the forming workbench, adjust the distance between the control nozzle and the workbench to 2cm, and start to fall at a certain fre...

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Abstract

The invention relates to a direct-current pulse-controlled molten drop deposition 3D printing device and a printing method. Rectangular pulse high voltage is generated through a direct-current high-voltage pulse generator, melt is stimulated to spray liquid drops instantly by connecting an upper electrode with a lower electrode, and with cooperation with three-dimensional movement of a forming substrate, the molten drops are deposited point by point and layer by layer to form a three-dimensional part. The direct-current pulse-controlled molten drop deposition 3D printing device is simple in structure, easy to control, high in melt liquid drop formation response frequency, and high in printing speed, and can be used for manufacturing parts in any complex shapes, and conducting diversified printing. In addition, materials are melted through a heating crucible, the temperature application range is wide, and the requirement for the types of the materials is low; material adaptability is high, for example, reliable 3D printing of various high polymer materials, metallic aluminum, tin and other materials can be achieved through the device; and printing efficiency and quality are high.

Description

technical field [0001] The invention belongs to the technical field of 3D printing, and relates to a droplet deposition 3D printing device controlled by direct current pulses and a 3D printing method using the device. Background technique [0002] Droplet deposition manufacturing technology, as a new type of 3D printing forming technology, is to use the part CAD information to control the generation of uniform droplet through the computer control system, and to control the deposition on the substrate point by point and layer by layer to manufacture a three-dimensional small parts. material manufacturing technology. This technology can directly form complex three-dimensional structures, realize the simultaneous forming of multiple materials, and complete the printing of parts combined with different materials. It is characterized by the absence of expensive laser systems, low operating costs, high reliability, and a wide selection of materials. It has become a new developme...

Claims

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Application Information

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IPC IPC(8): B29C64/118B29C64/20B29C64/273B29C64/295B29C64/393B22F3/115B33Y10/00B33Y30/00B33Y50/02
CPCB22F3/115B33Y10/00B33Y30/00B33Y50/02
Inventor 李焕勇张家豪
Owner NORTHWESTERN POLYTECHNICAL UNIV
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