CN201157904Y - Quantitative powder adding device of laser powder sintering rapid forming machine - Google Patents

Abstract

The utility model discloses a ration of laser powder sintering rapid prototyping machine adds powder device, including the powder feeding control mechanism who sets up the powder feeding section of thick bamboo in the frame and set up in the powder dropping mouth department that adds a powder section of thick bamboo, its characterized in that: the powder feeding control mechanism comprises a powder feeding base body and a motor arranged on the powder feeding base body, a channel communicated with a powder falling port of the powder feeding cylinder is arranged on the powder feeding base body, one section of the inner wall of the channel is an arc surface, a rotary roller driven by the motor and matched with the arc surface to control powder feeding is arranged in the channel, and a powder conveying groove is formed in the rotary roller. The utility model overcomes above-mentioned technique is not enough, provides a simple structure, can add powder, the quantitative powder feeding device of the laser powder sintering rapid prototyping machine of accurate control powder feeding by ration.

Description

Quantitative powder feeding device for laser powder sintering rapid prototyping machine

[technical field]

The utility model relates to a quantitative powder adding device of a laser powder sintering rapid prototyping machine.

[Background technique]

Laser rapid prototyping (Laser Rapid Prototyping: LRP) is a new manufacturing technology based on discrete/stacking principles, using computer technology, laser technology, automatic control, polymer technology, etc. to manufacture. The computer first inputs the three-dimensional part data designed by the CAD/CAM software into the program of the machine tool, and the computer controls the laser beam to scan the powder raw materials step by step, and the scanned area is sintered and solidified, and a three-dimensional entity designed by the CAD/CAM software is gradually obtained. Model-like prototype parts.

The applicant submitted six patents to the National Patent Office on February 3, 2008, the titles are: a laser powder sintering rapid prototyping machine with preheating function, a laser powder sintering rapid prototyping machine with constant temperature function, The utility model is one of the laser powder sintering rapid prototyping machine with powder added on the upper part, the quantitative powder adding device of the laser powder sintering rapid prototyping machine, the new laser powder sintering rapid prototyping machine, and the laser powder sintering rapid prototyping machine. The powder adding device of some laser powder sintering rapid prototyping machines cannot accurately control the amount of powder added. Generally, the actual amount of powder added is much more than the required amount of powder added, which causes the problem of powder waste.

[utility model content]

The utility model overcomes the disadvantages of the above-mentioned technologies, and provides a quantitative powder adding device of a laser powder sintering rapid prototyping machine with simple structure, quantitative powder feeding and precise control of powder feeding.

In order to achieve the above object, the utility model adopts the following technical solutions:

The quantitative powder feeding device of the laser powder sintering rapid prototyping machine includes a powder feeding cylinder arranged on the frame and a powder feeding control mechanism arranged at the powder feeding port of the powder feeding cylinder, and is characterized in that: the powder feeding control mechanism includes The powder-feeding base body and the motor arranged on the powder-feeding base body are provided with a channel communicating with the powder drop opening of the powder feeding cylinder on the powder-feeding base body. A section of the inner wall of the channel is an arc surface, and a The motor drives and cooperates with the circular arc surface to control the rotating roller for adding powder, and a powder conveying groove is arranged on the rotating roller.

The quantitative powder feeding device of the laser powder sintering rapid prototyping machine as described above is characterized in that: there are several powder conveying grooves, which are evenly arranged around the rotating roller.

The quantitative powder feeding device of the laser powder sintering rapid prototyping machine as described above is characterized in that: the powder conveying groove of the rotating roller is a strip-shaped arc groove.

The above-mentioned laser powder sintering rapid prototyping machine with powder added to the upper part is characterized in that: the powder row seat body is composed of a left seat body, a right seat body, and a connecting plate connecting the left seat body and the right seat body from the ends .

The quantitative powder adding device of the laser powder sintering rapid prototyping machine as described above is characterized in that: a rotating shaft is provided at one end of the rotating roller, and a mounting hole for placing the rotating shaft is provided on the connecting plate at the end; The other end is provided with a shaft, and the shaft passes through the connecting plate at this end to be connected with the motor shaft.

The beneficial effects of the utility model are: 1. Control the number of turns or the angle of rotation of the rotating roller, and the laser powder sintering rapid prototyping machine can be conveniently quantitatively added powder through the cooperation of the powder delivery groove and the arc surface of the inner wall of the channel. 2. The utility model has simple structure and high powder adding efficiency.

[Description of drawings]

Below in conjunction with accompanying drawing and embodiment of the present utility model, further describe in detail:

Fig. 1 is the explosion diagram of the utility model;

Fig. 2 is a structural diagram of the cooperation between the powder row seat body and the rotating roller of the utility model;

Figure 3 is an exploded view of the powder feeding control mechanism of the present invention.

[Detailed ways]

As shown in Figure 1-3, the utility model is a quantitative powder feeding device for a laser powder sintering rapid prototyping machine, which includes a powder feeding cylinder 1 arranged on the frame and a powder feeding nozzle arranged at the powder dropping port of the powder feeding cylinder 1. The powder control mechanism 2, the powder adding control mechanism 2 includes a powder row seat body 21 and a motor 23 arranged on the powder row seat body 21, and a powder drop port communicated with the powder feeding cylinder 1 is provided on the powder row seat body 21 Channel 200, a section of the inner wall of the channel 200 is an arc surface 201, and a rotating roller 22 driven by a motor 23 and cooperating with the arc surface 201 to control powder addition is set in the channel 200, and the rotating roller 22 is evenly arranged around the rotating roller 22. There is one powder delivery tank 221 or several same powder delivery tanks 221.

When the laser powder sintering rapid prototyping machine needs to add powder, the controller controls the motor 23 to rotate according to the program, and the rotation of the motor 23 drives the rotating roller 22 to rotate. The cooperation between the rotating roller 22 and the arc surface 201 will drive the laser powder from the powder The powder inlet at the top of the base 21 is transported to the powder outlet at the bottom of the powder row base 21 and enters the passage 200 . If it is a powder conveying trough 221, by controlling the number of rotations of the rotating roller 22 to quantitatively add powder to the laser powder sintering rapid prototyping machine; if there are multiple same powder conveying grooves 221, by controlling the rotation of the rotating roller 22 Quantitatively add powder to the laser powder sintering rapid prototyping machine; in this way, quantitative can be easily realized according to needs.

In the present invention, the powder conveying groove 221 of the rotating roller 22 is a strip-shaped arc groove. The powder row seat body 21 is made up of a left seat body 211, a right seat body 212 and a connecting plate 213 connecting the left seat body 211 and the right seat body 212 from the ends. One end of the rotating roller 22 is provided with a rotating shaft 3, and the connecting plate at this end is provided with a mounting hole 4 for placing the rotating shaft 3; the other end of the rotating roller 22 is provided with a shaft 5, and the shaft 5 passes through the connection of this end. The plate is connected to the motor shaft.

Claims (5)

1. The quantitative powder feeding device of the laser powder sintering rapid prototyping machine includes a powder feeding cylinder (1) arranged on the frame and a powder feeding control mechanism (2) arranged at the powder feeding port of the powder feeding cylinder (1) , is characterized in that: the powder adding control mechanism (2) includes a powder row seat (21) and a motor (23) arranged on the powder row seat (21), and a powder row seat (21) is provided with a The passage (200) connected to the powder drop port of the powder adding cylinder (1), a section of the inner wall of the passage (200) is an arc surface (201), and the passage (200) is driven by a motor (23) and connected to the arc surface. The surface (201) cooperates to control the rotating roller (22) for adding powder, and the rotating roller (22) is provided with a powder conveying groove (221). 2. The quantitative powder feeding device of the laser powder sintering rapid prototyping machine according to claim 1, characterized in that there are several powder conveying grooves (221), which are evenly arranged around the rotating roller (22). 3. The quantitative powder feeding device of the laser powder sintering rapid prototyping machine according to claim 1, characterized in that: the powder conveying groove (221) of the rotating roller (22) is a strip-shaped arc groove. 4. The laser powder sintering rapid prototyping machine with powder added on the top according to claim 1, characterized in that: the powder row seat (21) consists of a left seat (211), a right seat (212) and a left seat (211), right seat body (212) form from the connecting plate (213) that end is connected together. 5. The quantitative powder feeding device of the laser powder sintering rapid prototyping machine according to any one of claims 1 to 4, characterized in that: a rotating shaft (3) is provided at one end of the rotating roller (22), and the end is connected to A mounting hole (4) for placing the rotating shaft (3) is arranged on the plate; a shaft (5) is arranged at the other end of the rotating roller (22), and the shaft (5) passes through the connecting plate at the end to be connected with the motor shaft.

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