阅读说明：本技术 一种全方位调节加压的同轴送粉喷嘴装置 (All-round pressurized coaxial powder feeding nozzle device of adjusting ) 是由 张元� 刘剑峰 于 2021-10-07 设计创作，主要内容包括：本发明提供了一种可以根据不同材料的金属粉末和加压工件对空气加压范围进行调节的同轴送粉喷嘴装置。本发明涉及了一种全方位调节加压的同轴送粉喷嘴装置,包括空气加压部分、支撑连接部分和喷粉控制部分。其特征在于空气加压部分负责承载透镜与加压空气调节板和连接支撑连接部分,支撑连接装置负责连接空气加压部分和喷压控制部分,并且承载保护透镜,喷粉控制部分通过与支撑连接部分和空气加压部分的配合完成对工件的加工。本发明通过空气加压部分的调节板对实现了对加压控制的无级调节,具有加压材料和加工工件广泛、调节范围大、加压效果良好和操作简单等优点。(The invention provides a coaxial powder feeding nozzle device which can adjust the air pressurization range according to metal powder and a pressurization workpiece made of different materials. The invention relates to a coaxial powder feeding nozzle device capable of adjusting and pressurizing in all directions, which comprises an air pressurizing part, a support connecting part and a powder spraying control part. The device is characterized in that the air pressurizing part is responsible for bearing the lens, the pressurized air adjusting plate and the connecting and supporting connecting part, the supporting and connecting device is responsible for connecting the air pressurizing part and the spray pressure control part and bearing the protective lens, and the spray pressure control part is matched with the supporting and connecting part and the air pressurizing part to complete the processing of the workpiece. The invention realizes the stepless regulation of the pressurization control through the regulating plate pair of the air pressurization part, and has the advantages of wide pressurization material and processing workpiece, large regulation range, good pressurization effect, simple operation and the like.)

1. The coaxial powder feeding nozzle device capable of comprehensively regulating and pressurizing comprises an air pressurizing part, a supporting connecting part and a powder spraying control part, and is characterized in that the supporting connecting part is responsible for bearing stress and connecting the rest parts, the powder spraying control part, a laser control part, the air pressurizing part and a cooling protection part are matched with each other to process a workpiece, the coaxial powder feeding nozzle device is responsible for bearing a lens, a pressurized air regulating plate and a connecting and supporting connecting part, the supporting connecting device is responsible for connecting the air pressurizing part and the powder spraying control part and bearing the protection lens, and the powder spraying control part is matched with the supporting connecting part and the air pressurizing part to complete processing of the workpiece.

2. The coaxial powder feeding nozzle device with omni-directional regulation and pressurization as claimed in claim 1, further characterized in that: the air pressurizing shell (1) can adjust the pressurizing areas of different pressurizing metal powder materials and processing workpieces through an adjusting plate (10), and realizes the all-dimensional pressurizing of the metal powder, wherein a protective lens (8) is arranged below the refraction lens (6) to prevent the metal powder from polluting the lens.

3. The coaxial powder feeding nozzle device capable of omni-directionally adjusting and pressurizing as claimed in claim 2, further characterized in that: the adjusting plate (10) is four annular trapezoidal adjusting metal sheets with two ends extending out, the four metal sheets are mutually meshed to seal pressurized air, and the four metal sheets are connected with the air pressurizing shell (1) in a hinge connection mode.

Technical Field

The invention relates to the field of laser metal additive, in particular to a coaxial powder feeding nozzle device capable of adjusting and pressurizing in an all-around manner.

Background

At present, 3D printing technology at home and abroad is mature day by day, and machinable products gradually turn to high-precision and high-strength fields such as medical treatment, aerospace, military and the like from the aspects of home, life, movement and the like, so that higher requirements on the quality of machined parts are also required, the existing printing equipment is difficult to guarantee the strength of workpieces on the premise of meeting the precision of the workpieces, and higher requirements on the adjusting capacity of the printing equipment are also required due to different materials used for machining and different machined workpieces.

The invention improves the mass density and the strength of the 3D printing workpiece by the characteristics of adjustability, high efficiency, stability and the like on the premise of ensuring the original processing precision of the laser metal additive, and can adjust different processing materials and workpieces. In the process of processing, the invention realizes the dead-angle-free air pressurization of the metal powder, ensures the processing precision of the workpiece to the maximum extent in the pressurization process, improves the use efficiency of materials and saves the processing cost.

Disclosure of Invention

The invention provides a coaxial powder feeding nozzle device capable of adjusting and pressurizing in all directions, which is used for improving the mass density and the strength of a processed product on the premise of ensuring the precision of different processed workpieces and processed materials;

in order to realize the processing purpose, the basic technical scheme is as follows:

the air pressurizing device is added outside the coaxial powder feeding nozzle device, the adjusting plate is added in the air pressurizing device, and relative displacement is realized between the adjusting plate and the air pressurizing shell, so that the air pressurizing range is adjusted to meet the processing requirements of different processing workpieces;

when the metal powder pressurizing device works, the air pressurizing device can enable air to pressurize metal powder in all directions, so that the pressurizing effect is more sufficient.

Drawings

FIG. 1 is a front sectional view of a coaxial powder feeding nozzle device with all-directional pressure adjustment.

FIG. 2 is a top view of a coaxial powder feeding nozzle device with all-directional pressure adjustment.

FIG. 3 is a lower view of a coaxial powder feeding nozzle device with omni-directional adjustment and pressurization.

FIG. 4 is a schematic axial view of a coaxial powder feeding nozzle device with all-directional adjustment and pressurization.

Fig. 5 is a front view of the adjustment plate.

Fig. 6 is a rear view of the adjustment plate.

Wherein: 1 air pressurizing shell, 2 powder spraying channel, 3 protective gas channel, 4 water cooling channel, 5 pressurizing channel, 6 refracting lens, 7 connecting sleeve, 8 protective lens, 9 nozzle and 10 adjusting plate

The specific implementation mode is as follows:

the matching relationship and the function of the parts of the invention are explained below with the accompanying drawings:

as shown in fig. 1, 2, 3, and 4: the air pressurization shell 1 is connected with the sleeve 7 through threads; the powder spraying channel 2, the protective gas channel 3 and the water cooling channel 4 are fixedly connected with a nozzle 9; the air pressurizing shell 1 is connected with the pressurizing channel 5 through threads; the connecting sleeve 7 is connected with the nozzle 9 through threads; a refractive lens 6 and a protective lens 8 are placed over the connecting sleeve 7 and the nozzle 9, respectively.

As shown in fig. 1, 5, and 6: the air pressurizing shell 1 is connected with the adjusting plate 10 through a hinge; the adjusting plates 10 are fitted to each other by means of both side protruding portions.

The working mode of the invention is explained below with the attached drawings:

as shown in fig. 1, 2, 3, and 4: the laser light is irradiated to the processing surface through the protective lens 8 after being refracted by the refractive lens 6, wherein the protective lens 8 can prevent the refractive lens 6 from being polluted when metal powder is processed, and the lens is convenient to clean due to the fact that no fixing device is arranged. The metal powder is sprayed out through the four powder spraying channels 2, and meanwhile, the shielding gas is also sprayed out from the four shielding gas channels 3, so that the sprayed metal powder is prevented from being dispersed. The lower end of the water cooling channel 4 is closed, and cold water can enter from any two adjacent channels and flow out from the other two channels after passing through the nozzle 9. Pressurized air enters the cavity of the air pressurizing housing 1 through the pressurizing passage 5 to pressurize the ejected metal powder.

As shown in fig. 1, 5, and 6: the adjusting plate 10 is a trapezoidal metal sheet with four annular two ends extending out, the sealing performance of a pressurizing environment is guaranteed in a meshing mode, the angle of the outer wall of the pressurizing environment and the angle of the outer wall of the air pressurizing shell 1 are adjusted in a hinge connection mode, the adjusting plate can be attached to the pressurizing outer wall before machining, after the pressurizing cavity is filled with air, the air pressurizing range is adjusted through manual adjustment of the adjusting plate according to the difference between machined metal powder materials and machined parts.