CN-224209129-U - Selective Laser Melting (SLM) forming directional heating device for aluminum alloy

CN224209129UCN 224209129 UCN224209129 UCN 224209129UCN-224209129-U

Abstract

The utility model discloses an SLM forming directional heating device for selective laser melting of aluminum alloy, which relates to the technical field of selective laser melting and comprises an operation bin, wherein a main controller is arranged on the lateral surface of the operation bin, a thermal imaging structure and a sintering forming laser mechanism are arranged on the upper end surface of the operation bin, an operation table is arranged on the inner bottom surface of the operation bin, a dust removing mechanism is further arranged on the back surface of the operation bin, a detachable dust collecting bin is arranged on the lateral surface of the dust removing mechanism.

Inventors

ZHOU QINGBO
LENG JINFENG
Cai Xinbi
LIU ZHAOPING
ZHOU XUFENG

Assignees

宁波石墨烯创新中心有限公司

Dates

Publication Date: 20260508
Application Date: 20241216

Claims (5)

1. The directional heating device for the Selective Laser Melting (SLM) forming of the aluminum alloy comprises an operation bin (100), wherein a main controller (400) is arranged on the lateral surface of the outside of the operation bin (100), a thermal imaging structure (500) and a sintering forming laser mechanism (200) are arranged on the upper end surface of the operation bin, an operation table (101) is arranged on the bottom surface of the inside of the operation bin (100), an opening (102) is formed in the inner wall, close to the bottom surface, of the back surface of the operation bin (100), and the directional heating device is characterized in that a dust removing mechanism (300) is further arranged on the back surface of the operation bin (100), and a detachable side opening plate (301) is arranged on the lateral surface of the dust removing mechanism (300); The dust removing device is characterized in that a directional heating mechanism (600) is further arranged in the dust removing mechanism (300), a negative pressure aspirator (303) is arranged at the lower end of the directional heating mechanism (600), a dust collecting bin (302) is arranged on one side of the negative pressure aspirator (303), a total collecting head (305) is arranged on the other side of the negative pressure aspirator (303), a total power supply (304) is arranged on one side of the total collecting head (305), the total power supply (304) provides power for the negative pressure aspirator (303) and the directional heating mechanism (600), the side surface of the total collecting head (305) is communicated with one end of an absorbing pipe (306), and the other end of the absorbing pipe (306) is communicated with the directional heating mechanism (600); The directional heating mechanism (600) comprises a cover plate (601), wherein the rear end of the cover plate (601) is movably connected with a screw rod (607) through a movable joint (603), one end of the screw rod (607) is connected with the output end of a motor (602), a plurality of suction ports (604) are formed in the upper end face of the cover plate (601), a plurality of heating resistor strips (605) are arranged on the bottom face of the cover plate, and a potentiometer integration (606) is arranged on the side face of the cover plate (601).
2. The Selective Laser Melting (SLM) forming and directional heating device of claim 1, wherein the cover plate (601) moves along a screw rod (607), and when the cover plate (601) is in a contracted state, the front end of the cover plate (601) is placed in the opening (102).
3. The Selective Laser Melting (SLM) forming and directional heating device of aluminum alloy according to claim 1, wherein after all the cover plates (601) extend along the screw rod (607), the bottom surfaces of the cover plates (601) can completely cover the operating platform (101).
4. The Selective Laser Melting (SLM) forming directional heating device of aluminum alloy according to claim 1, wherein a plurality of heating resistor strips (605) on the bottom surface of the cover plate (601) are respectively connected with the main power supply (304) in parallel, a plurality of potentiometers are arranged in the potentiometer integration (606), the number of the potentiometers is consistent with that of the heating resistor strips (605), and one potentiometer is arranged in a serial circuit between each heating resistor strip (605) and the main power supply (304).
5. The Selective Laser Melting (SLM) forming directional heating device of aluminum alloy according to claim 1, wherein a channel which is communicated with the suction port (604) and the suction tube (306) is arranged in the cover plate (601).

Description

Selective Laser Melting (SLM) forming directional heating device for aluminum alloy Technical Field The utility model relates to the technical field of selective laser melting, in particular to an SLM forming directional heating device for selective laser melting of aluminum alloy. Background The SLM forming technology is to utilize high energy density laser beam to scan under the control of computer program, to selectively melt the pre-laid metal powder layer and combine with the matrix metallurgy, then to continuously spread powder layer by layer and scan, finally to finish the manufacturing process of the three-dimensional metal parts. The device can be used for manufacturing metal parts with complex shapes, has good mechanical properties and high precision of molded parts, has important application in the fields of medical treatment, aerospace, product research and development and the like, such as manufacturing of medical implants, manufacturing of special parts of aeroengines, manufacturing of dies with cooling channels and the like, and can realize special requirements of light weight and the like through design of special structures in the aerospace field. In the SLM forming process, the formed piece is cooled slowly at a larger size or a thick wall part, but cooled quickly at a smaller size or a thin wall part, so that uneven temperature distribution inside the formed piece easily causes buckling deformation of the formed piece, reduces product performance, and even becomes a waste piece. Particularly, when forming thin-wall complex parts, the formed parts are easy to warp and deform due to uneven temperature distribution in the formed parts, and the yield is reduced. The patent number CN205888083U discloses a selective laser melting SLM forming directional heating device, belongs to the technical field of laser melting SLM forming, and provides a selective laser melting SLM forming directional heating device which has a simple structure, is convenient to use, can ensure uniform temperature distribution and prevents a formed part from warping and deforming caused by uneven temperature distribution in a forming process; the utility model is widely used for directional heating of SLM forming. The above-mentioned patent has the defect that the directional heating laser in the above-mentioned device cannot process the directional heating function of a plurality of printing pieces at the same time, or the situation that part of printing pieces still have uneven cold and heat to cause warping deformation can be caused when the directional heating of a plurality of printing pieces is processed. Secondly, in the long-term printing process, dust raised when the scraper spreads powder can affect laser under the action of a wind field, so that the energy when the dust reaches a sintering layer is weakened, and printing failure is caused. Disclosure of utility model Some simplifications or omissions may be made in this section as well as in the description of the utility model and in the title of the utility model, which may not be used to limit the scope of the utility model. The present utility model has been made in view of the above-mentioned or existing problems occurring in the prior art. Therefore, the utility model aims to provide an aluminum alloy Selective Laser Melting (SLM) forming directional heating device which solves the problem of processing directional heating of a plurality of printing pieces and processes dust generated in the printing process. The technical scheme includes that the directional heating device for forming the SLM by using the laser melting of the aluminum alloy selective area comprises an operation bin, wherein a main controller is arranged on the lateral surface of the operation bin, a thermal imaging structure and a sintering forming laser mechanism are arranged on the upper end surface of the operation bin; The dust removing mechanism is internally provided with a directional heating mechanism, the lower end of the directional heating mechanism is provided with a negative pressure aspirator, one side of the negative pressure aspirator is provided with a dust collecting bin, the other side of the negative pressure aspirator is provided with a total collecting head, one side of the total collecting head is provided with a total power supply, and the total power supply provides power for the negative pressure aspirator and the directional heating mechanism; the side surface of the main collecting head is communicated with one end of the suction pipe, and the other end of the suction pipe is communicated with the directional heating mechanism; The directional heating mechanism comprises a cover plate, wherein the rear end of the cover plate is movably connected with a screw rod through a movable joint, one end of the screw rod is connected with the output end of a motor, a plurality of suction ports are arranged on the upper end face of the cover plate, a plurality of heating