Device and method for polymer three-dimensional product additional material manufacturing
An additive manufacturing and polymer technology, applied in the field of devices for additive manufacturing of polymer three-dimensional products, can solve the problems of reducing the number of repeated use of uncured powder materials, high requirements for temperature distribution uniformity, and high equipment manufacturing costs. The effect of eliminating equipment manufacturing costs, relaxing requirements, and easy cleaning
Active Publication Date: 2019-03-26
陈勃生 +1
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Problems solved by technology
Its main advantages are: it can manufacture objects with complex shapes, which is suitable for personalized customization; the main disadvantages are: SLS technology needs to use laser and galvanometer system, and the equipment manufacturing cost is high; because the technology adopts "layered heat curing" when forming In order to avoid deformation during layered cooling, the working temperature of the forming space has to be raised to near the melting point of the material, and the high-temperature baking greatly reduces the number of repeated uses of the unsolidified powder material; the forming room has high requirements on the uniformity of temperature distribution, and the temperature control The technology is complex and the equipment manufacturing cost is high; in order to avoid the high temperature oxidation of polymerized powder materials, atmosphere protection is required, so the equipment manufacturing cost is high
POLYJET technology has special requirements for nozzles, and the cost is relatively high
Method used
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[0054] Please refer to the attached figure 1 , the device mainly includes:
[0055] Material peripheral constraint upper part (4), material peripheral constraint lower part (6), material substrate (5), lifting platform (7), horizontally movable powder coating device (1), horizontally movable nozzle matrix (3) .
[0056] attached figure 1 Among them, (2) is a polymer powder aggregate with dual characteristics of magnetic conductivity and conductivity. It is composed of polymer powder infiltrated by a suspension of particles with dual characteristics of magnetic conductivity and conductivity. It has the same shape as the manufactured three-dimensional product but The size is slightly larger; (8) is a polymer powder material, which is surrounded by the upper part (4) of the material peripheral constraint, the lower part of the material peripheral constraint (6) and the material substrate (5).
[0057] Please refer to the attached figure 2 , the technical solution is divided ...
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Abstract
The invention discloses a device and method for polymer three-dimensional product additional material manufacturing. The device is mainly composed of a material periphery restraint upper part, a periphery restraint lower part, a material base plate, a lifting table, a powder coating device, a sprayer matrix and a high-frequency alternating electromagnetic energy radiation device. The method comprises the steps that polymer powder spreading is conducted, magnetic conductive and electric conductive particle suspension liquid is sprayed to the selected area on the polymer powder, and after the process is repeatedly conducted several times, a polymer powder aggregate with the dual characters of magnetic conductivity and electric conductivity is formed through stacking, the high-frequency alternating magnetic field is applied to the whole aggregate, the temperature of the aggregate is increased, inner polymer powder is fused, and a polymer three-dimensional product is manufactured after cooling.
Description
technical field [0001] The invention relates to the technical field of additive manufacturing of polymer products, in particular to a device and method for additive manufacturing of polymer three-dimensional products. Background technique [0002] Additive manufacturing is a new type of polymer manufacturing technology, mainly including powder bed fusion (SLS), multi-jet fusion (MJF), fused deposition (FFF), light curing (SLA) and material direct injection (POLYJET) and other technologies. Its main advantages are: it can manufacture objects with complex shapes, which is suitable for personalized customization; the main disadvantages are: SLS technology needs to use laser and galvanometer system, and the equipment manufacturing cost is high; because the technology adopts "layered heat curing" when forming In order to avoid deformation during layered cooling, the working temperature of the forming space has to be raised to near the melting point of the material, and the high-t...
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IPC IPC(8): B29C64/245B29C64/255B29C64/165B33Y30/00B33Y10/00
CPCB29C64/165B29C64/245B29C64/255B33Y10/00B33Y30/00
Inventor 陈勃生陈叶
Owner 陈勃生