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Powder scraping device for high-temperature printing system

A printing system and high-temperature technology, applied in the field of additive manufacturing, can solve the problems of thermal deformation and uneven scraping accuracy, and achieve the effect of improving scraping efficiency, improving scraping accuracy, and occupying a small space

Active Publication Date: 2021-04-09
NAT INST CORP OF ADDITIVE MFG XIAN
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems that the existing powder scraping device cannot uniformly scrape powder, thermal deformation and low powder scraping accuracy in high temperature environment, so as to provide a powder scraping device for high temperature printing system

Method used

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  • Powder scraping device for high-temperature printing system
  • Powder scraping device for high-temperature printing system

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Embodiment Construction

[0028] The content of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] The invention provides a powder scraping device for a high-temperature printing system. The device is used in large-scale electron beam selective melting (EBSM) equipment, and is used to efficiently, uniformly and accurately spread metal powder on a powder bed and compact it. Get ready for printing. The powder scraping and compacting device of the present invention can cooperate with continuous and uninterrupted printing to realize high-efficiency production and make it possible to realize rapid printing of large-sized and complex parts. At the same time, when the device is used in large-scale electron beam selective melting (EBSM) equipment, it has a compact structure, takes up little space, and saves space in a vacuum printing room, thereby saving equipment cost and vacuuming time.

[0030] Such as figure 1 A...

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Abstract

The invention provides a powder scraping device for a high-temperature printing system. The problems that an existing powder scraping device cannot uniformly scrape powder in a high-temperature environment, thermal deformation exists, and the powder scraping precision is low are solved. The powder scraping device comprises a supporting frame and a scraper assembly. A cooling cavity is formed in the supporting frame and used for cooling the scraper assembly. The scraper assembly is arranged at the bottom end of the supporting frame and comprises a scraper seat, a compaction cutter and n scrapers. The scraper seat is arranged at the bottom end of the supporting frame, the length direction of the scraper seat is set to be the X direction, the width direction is set to be the Y direction, and the height direction is set to be the Z direction. The scraper and the compaction cutter are sequentially arranged at the bottom end of the scraper seat in the Y direction; the scraper is of a comb-tooth-shaped structure and comprises a plurality of scraping strips arranged in the X direction; the compaction cutter is of a U-shaped plate structure, and a plurality of U-shaped slits distributed in the X direction are formed in a U-shaped plate, so that the compaction cutter forms a U-shaped comb tooth structure; and the powder pressing arc surface of the compaction cutter is lower than the powder scraping end surface of the scraper in the Z direction.

Description

technical field [0001] The invention belongs to the field of additive manufacturing, and in particular relates to a powder scraping device for a high-temperature printing system. Background technique [0002] Electron beam selective melting (EBSM) metal 3D printing uses electron beams as the energy source to manufacture solid parts by melting metal powder layer by layer in a high vacuum environment. Due to the high power of the electron beam and the high energy absorption rate of the material to the electron beam, EBSM technology has the advantages of high product density, low oxygen content, low thermal stress, not easy to deform and crack, low price of powder consumables, unformed powder can be recycled, With the characteristics of high printing efficiency, it has unique advantages and application value in 3D printing of metal materials, especially refractory and refractory metal materials, and is widely used in orthopedics, aerospace and other fields. [0003] The proces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F12/67B22F10/28B33Y30/00
CPCB33Y30/00Y02P10/25
Inventor 王志翔卢秉恒王红宇赵纪元
Owner NAT INST CORP OF ADDITIVE MFG XIAN
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