A continuous powder supply device for laser rapid prototyping

Abstract

The invention relates to a continuous powder supply device for laser rapid prototyping, which belongs to the technical field of laser sintering powder supply devices, and provides a continuous powder supply device for laser rapid prototyping, which is simple in structure, easy to use, capable of continuous powder supply, and avoids powder pollution. The technical scheme adopted is to set a powder supply cylinder in the molding cavity, a lifting bottom plate is set inside the powder supply cylinder, a lifting oil cylinder is set on the bottom of the lifting bottom plate, a material delivery port is provided on the side wall of the molding cavity, and a Sealing cover, the sealing cover is provided with a feed port, the bottom of the feed port is provided with a collection box, the bottom of the collection box is provided with a conveying belt, and the drive rollers on both sides of the conveying belt are respectively fixed on the inner wall of the molding cavity and sealed. On the inner wall of the cover, the outside of the sealed cover is provided with a driving motor for driving the belt, and the lifting cylinder and the driving motor are respectively connected and controlled with the main control system; the invention is widely used in the continuous powder supply of laser rapid prototyping.

Description

technical field [0001] The invention relates to a laser rapid prototyping continuous powder supply device, belonging to the technical field of laser sintering powder supply devices. Background technique [0002] 3D printing rapid prototyping technology uses 3D CAD data to accumulate layers of materials into solid prototypes through rapid prototyping machines. It integrates computer technology, mechanical engineering, CAD / CAM technology, material science, laser technology, and reverse engineering and layered manufacturing technology, providing an efficient and low-cost means for the rapid realization of parts prototype and new design ideas. Its main advantages are: ① Reduce the cost of new product development. ②Diversification of new products does not increase costs. ③ Instant production. ④The design space is unlimited. ⑤ Zero-skill manufacturing. ⑥It does not take up space and is portable. ⑦Reduce waste by-products. ⑧ exact physical copy. Therefore, the development o...

AI Technical Summary

Problems solved by technology

The lower powder supply is relatively mature and widely used, but there are still the following problems: ①The preparation process of the powder supply tank is complicated. Most of the powder supply tanks are mainly processed after casting. Once formed, the size and shape of the powder supply tank will be difficult. When changing, if the size of the formed part is larger and a larger powder supply cylinder is required, a larger casting is required, which is not only difficult to process, but also wastes materials and costs more

②It is difficult to continuously supply powder. During the forming process, if the forming powder is not enough, it is difficult to continuously supply powder. It is necessary to open the forming cavity to add powder, which is not only time-consuming, but also easily causes powder pollution

③It is difficult to heat the formed powder in real time, and the powder preheating efficiency is low

④ Only one material can be formed, and it is difficult to prepare products formed from a variety of different powders

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