Ultrasonic detection 3D printer capable of avoiding powder interference

Abstract

The invention discloses an ultrasonic detection 3D printer capable of avoiding powder interference. The ultrasonic detection 3D printer comprises a forming box, a forming platform, a feeding device, agas adjusting device and a material scraping device, wherein a sweeping and shooting detection mechanism is arranged at the upper part of the forming box, the material scraping device comprises a material scraping air cylinder arranged on the side face of the forming box, the material scraping air cylinder is connected with a material scraping movable block, and a horizontal moving powder clearing air pipe is arranged on the material scraping movable block; and the powder clearing air pipe is connected with a material scraping block which can penetrate into the forming box, the material scraping block is a cavity block with a lower opening port, the powder clearing air pipe penetrates into the cavity block and is provided with powder clearing air holes, and the other end of the powder clearing air pipe is connected with a powder clearing air pump. According to the ultrasonic detection 3D printer, the material scraping block is designed into the cavity block with the opening port at the lower part, the powder clearing air pipe is arranged inside the cavity and communicates with the powder clearing air pump, the powder clearing air holes are formed in the part of the cavity block, loose powder left after material scraping is carried out can be sucked away, and the interference generated to the ultrasonic detection is avoided.

Description

technical field [0001] The invention relates to the field of SLM3D printing and molding, in particular to an ultrasonic detection 3D printer capable of avoiding powder interference. Background technique [0002] With the rapid development of science and technology, SLM (Selective laser melting) 3D printing technology is already a mature technology, which can be applied to the molding of parts with various complex shapes and structures. [0003] Most of the existing SLM3D printing equipment includes a forming platform, a scraping device, a feeding device, a gas regulating device and a laser scanner. The laser scanner performs selective laser melting on a layer of metal powder according to a specific trajectory to form A layer of metal sheet is stacked layer by layer until the product is printed. The above equipment is used for printing. In order to ensure that each layer of metal sheet does not contain pores, an ultrasonic detection device will be added for the detection of p...

AI Technical Summary

Problems solved by technology

[0003] Most of the existing SLM3D printing equipment includes a forming platform, a scraping device, a feeding device, a gas regulating device and a laser scanner. The laser scanner performs selective laser melting on a layer of metal powder according to a specific trajectory to form A layer of metal sheet is stacked layer by layer until the product is printed. The above equipment is used for printing. In order to ensure that each layer of metal sheet does not contain pores, an ultrasonic detection device will be added for the detection of pores. It and laser The scanners together form a scanning detection device; however, in the actual printing process, even after scraping, there will still be a small part of the powder in a scattered state, which will affect the detection accuracy of the ultrasonic detection device

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