An anti-stick powder device for selective laser melting equipment
A technology of selective laser melting and equipment, which is applied to the improvement of process efficiency, additive manufacturing, additive processing, etc., can solve the problem that the anti-splash device cannot be used in selective laser melting technology, so as to reduce the risk of damage to parts and improve surface quality and the effect of precision
Inactive Publication Date: 2020-12-08
JILIN UNIV
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Problems solved by technology
Therefore, the anti-splash device in the above patent cannot be used for selective laser melting technology
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[0016] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0017] like figure 1 , figure 2 As shown, an anti-adhesive powder device for selective laser melting equipment includes an anti-adhesive powder baffle 4 arranged in the molding chamber of the selective laser melting equipment, a slider 3 for fixing the baffle, and a sliding block 3 that is connected and matched. A screw guide rail 1 capable of moving the baffle, a motor drive system 5 and a computer control system 6 arranged outside the molding room. The anti-adhesive powder device is partly installed in the forming room of the selective laser melting equipment, and the airflow generated by the protective gas in the forming room is along the negative direction of the X axis.
[0018] There is a detachable connection between the anti-sticking powder baffle plate...
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The invention relates to rapid prototype manufacturing technology, and provides an anti-adhesive powder device in selective laser melting equipment. The invention includes a screw guide rail, a guide rail bracket, a slider, an anti-sticking powder baffle, a motor drive system and a computer control system. The two ends of the anti-adhesive powder baffle are respectively fixed on the slider by bolts. The two sliders are engaged with the guide rail of the screw rod, and the guide rail is connected with the motor drive system. The motor drive system is controlled by the computer control system. The two make the baffle follow the laser beam. The scan path moves towards the area that has been printed. Since the laser beam scans the powder material during the printing process, there is a certain impact on the powder, and the protective gas is blown from the air inlet device on one side of the molding chamber to the other side, under the action of the air flow, the powder particles generated by the splash will be blown To the area that has been printed, sticking powder will appear. The anti-adhesive powder baffle device can effectively avoid this problem and improve the surface quality and precision of the selective laser melting parts.
Description
technical field [0001] The invention belongs to the field of rapid prototype manufacturing, and in particular relates to an anti-adhesive powder device of selective laser melting equipment. Background technique [0002] Rapid prototyping technology can automatically and quickly transform the CAD model into a prototype with a certain structure and performance or directly manufacture it into parts. The principle of selective laser melting is to spread a layer of powder material on the substrate, scan the metal powder with a laser beam according to a certain trajectory and speed, and the irradiated powder material will melt and solidify rapidly. The height, then repeat the above process until the entire part is formed. This process can be used to quickly manufacture parts with complex shapes and good performance. Controlling the surface accuracy of formed parts is one of the key processes of selective laser melting technology, and the phenomenon of surface sticking powder wil...
Claims
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IPC IPC(8): B22F3/105B33Y30/00
CPCB33Y30/00B22F10/00B22F12/224B22F10/28Y02P10/25
Inventor 王文权李雅倩史子木
Owner JILIN UNIV