Powder feeder for laser cladding processing

Abstract

The utility model discloses a powder feeder of laser cladding processing, including sheet metal box (1), be equipped with drive motor (2) in sheet metal box (1), the upper end of sheet metal box (1) is equipped with fixed base (3), be equipped with the powder disc (4) of drive motor (2) output end connection in fixed base (3), be equipped with the powder slide (5) on the powder disc (4), a pair of the scraper (6) that scrape even powder is fitted on the powder slide (5). The utility model discloses through the direct positioning cooperation of inlet and outlet component and scraper, simplifies the installation flow, reduces the installation difficulty.

Description

Technical Field

[0001] This utility model relates to the field of laser cladding equipment, and in particular to a powder feeder for laser cladding processing. Background Technology

[0002] With the continuous development of laser cladding technology, the powder feeder, as a core component of laser cladding machine tools, plays a crucial role in the efficiency and uniformity of powder feeding due to its performance and ease of installation.

[0003] Currently, the Chinese utility model patent CN210974875U discloses a dual-groove scraper-type powder feeder, which adopts a structural design including a powder cylinder, connecting parts, a fixing plate, a scraper, a powder feeding turntable, a powder outlet nozzle, and a motor assembly. However, this powder feeder has certain shortcomings in practical applications. The scraper relies on the fixing plate for positional fixation, which requires precise control of the fixing plate's installation position and accuracy when installing the powder cylinder and powder outlet nozzle. The interconnected installation requirements of multiple components not only significantly increase the overall installation complexity but also increase the difficulty of controlling the installation accuracy between components. If any component is installed incorrectly, it can easily affect the powder feeding stability and uniformity of the feeder, thereby reducing the quality and efficiency of laser cladding processing. Utility Model Content

[0004] The purpose of this invention is to provide a powder feeder for laser cladding processing. This invention simplifies the installation process and reduces installation difficulty by directly positioning and engaging the feeding and discharging components with the scraper.

[0005] The technical solution of this utility model is as follows: A powder feeder for laser cladding processing includes a sheet metal box, a drive motor inside the sheet metal box, a fixed base at the upper end of the sheet metal box, a powder tray connected to the output end of the drive motor inside the fixed base, a powder slide on the powder tray, a pair of scrapers for scraping the powder evenly fitted on the powder slide, a positioning groove on the scraper, and a material hole at the bottom of the positioning groove; a pressure plate on the fixed base, a discharge nozzle, a powder cylinder, and an air nozzle for powder conveying are provided on the pressure plate, the discharge ends of the powder cylinder and the discharge nozzle are both embedded in the positioning groove, and the discharge end of the powder cylinder is aligned with the material hole. After the air nozzle introduces carrier gas, the powder mixes with the carrier gas through the material hole to form a gas-solid flow and is discharged from the discharge nozzle.

[0006] In the powder feeder for laser cladding processing described above, the bottom of the sheet metal box is provided with a connecting seat that moves synchronously with the external machine tool motion system.

[0007] In the aforementioned powder feeder for laser cladding, the scraper comprises a block, the positioning groove is disposed on the upper surface of the block, and the lower surface of the block has a protrusion with a pressing groove communicating with the material hole inside the protrusion.

[0008] In the aforementioned powder feeder for laser cladding, the powder cylinder includes a base mounted on a pressure plate, a main body of the powder cylinder on the base, and a cover at the upper end of the main body of the powder cylinder; the end of the base is embedded in a positioning groove in a scraper on one side.

[0009] In the aforementioned powder feeder for laser cladding, the base has a pressure stabilizing channel connected to an external air pressure system, and the inner end of the pressure stabilizing channel is fitted with a metal tube extending to the upper part of the material cylinder body.

[0010] In the aforementioned powder feeder for laser cladding, the powder channel inside the base is a conical channel that is wider at the top and narrower at the bottom.

[0011] In the aforementioned powder feeder for laser cladding, the side of the sheet metal box has a handle and louvers.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] 1. In this utility model, the discharge ends of the powder cylinder and the discharge nozzle are directly embedded in the positioning groove of the scraper and precisely correspond to the material hole. There is no need for indirect positioning through the fixing plate, which eliminates the calibration steps of the fixing plate and multiple components in the traditional structure. During installation, it is only necessary to align and embed the powder cylinder, the discharge nozzle and the scraper groove to complete the positioning of the components. The positioning groove realizes the direct cooperation between the powder cylinder, the discharge nozzle and the scraper, avoiding the chain error caused by the installation deviation of the fixing plate, simplifying the installation process and reducing the installation difficulty.

[0014] 2. The powder track on the powder tray fits into a pair of scrapers. As the powder tray rotates, the scrapers can simultaneously scrape the powder in the powder track to prevent powder from accumulating and clumping.

[0015] 3. The pressure stabilizing channel inside the base is connected to an external air pressure system. The metal tube extends to the upper part of the barrel body, which can balance the air pressure inside the barrel in real time, so that the powder can fall smoothly in a stable air pressure environment and avoid problems such as poor powder flow or blockage caused by air pressure changes. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the mounting bracket;

[0018] Figure 3 This is a schematic diagram of a powder tray;

[0019] Figure 4 This is a schematic diagram of a powder chute.

[0020] Figure 5 This is a schematic diagram of the feed hole;

[0021] Figure 6 This is a schematic diagram of a metal tube.

[0022] The markings in the attached diagram are as follows: 1-Sheet metal box, 2-Drive motor, 3-Fixed base, 4-Powder tray, 5-Powder chute, 6-Scraper, 7-Positioning groove, 8-Material hole, 9-Pressure plate, 10-Discharge nozzle, 11-Powder cylinder, 12-Air nozzle, 13-Connecting seat, 14-Block, 15-Protrusion, 16-Pressure groove, 17-Base, 18-Main body of cylinder, 19-Cover, 20-Pressure stabilizing channel, 21-Metal pipe, 22-Handle, 23-Louvre. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0024] Example: A powder feeder for laser cladding processing, including a sheet metal box 1, as shown in the attached diagram. Figure 1 As shown, the bottom of the sheet metal box 1 is equipped with a connecting seat 13 that moves synchronously with the external machine tool motion system. The entire powder feeder moves synchronously with the machine tool motion system, shortening the powder feeding distance and ensuring the stability of powder feeding. The side of the sheet metal box 1 has a handle 22 and louvers 23. The handle on the side of the sheet metal box facilitates equipment handling, and the louver design can accelerate the heat dissipation of the drive motor. The drive motor 2 is installed inside the sheet metal box 1, and a fixed seat 3 is installed at the top of the sheet metal box 1, as shown in the attached figure. Figure 2 As shown, a powder tray 4 connected to the output end of the drive motor 2 is installed inside the mounting base 3, as shown in the attached diagram. Figure 3 As shown, the drive motor will rotate the powder tray 4, which has a powder slide 5, as shown in the attached diagram. Figure 4 As shown, a pair of scrapers 6 for scraping and evenly distributing powder are fitted onto the powder chute 5. The scrapers 6 have positioning grooves 7, and the bottom of the positioning grooves 7 has material holes 8, as shown in the attached diagram. Figure 5 As shown; a pressure plate 9 is installed on the fixed base 3, and the pressure plate is installed on the fixed base by screws. The pressure plate 9 is provided with a discharge nozzle 10 and a powder cylinder 11. The discharge ends of the powder cylinder 11 and the discharge nozzle 10 are both embedded in the positioning groove 7. There are two scrapers: one feeding scraper that cooperates with the discharge end of the powder cylinder, and one discharging scraper that cooperates with the discharge nozzle. Both the discharge end of the powder cylinder and the discharge nozzle are connected to the pressure plate by screws, and the discharge ends of the powder cylinder 11 and the discharge nozzle 10 correspond to the material hole 8. The pressure plate 9 is also provided with an air supply nozzle 12 for powder conveying. After the air supply nozzle is filled with a carrier gas (such as argon), the airflow passes through the pressing groove on the lower surface of the scraper and communicates with the material hole, forming a gas-solid mixture flow when the powder falls, and flows out from the discharge nozzle. In order to observe the powder in the powder chute, a transparent window is provided on the pressure plate.

[0025] The scraper 6 includes a block 14, the positioning groove 7 is provided on the upper surface of the block 14, and the lower surface of the block 14 has a protrusion 15. The protrusion 15 has a pressing groove 16 that communicates with the material hole 8. The pressing groove is combined with the powder channel. The powder falls into the powder slide and pressing groove through the material hole on the scraper. As the powder tray rotates, the powder is pressed evenly in the powder slide.

[0026] The powder cylinder 11 includes a base 17 mounted on a pressure plate 9, a main body 18 on the base 17, and a cover 19 at the upper end of the main body 18. The end of the base 17 is embedded in a positioning groove 7 in a scraper 6 on one side. Unscrewing the cover allows powder to be added into the main body of the powder cylinder, which is fed by gravity. The powder channel inside the base 17 is a conical channel that is wider at the top and narrower at the bottom, using the conical surface to guide the powder to fall in a concentrated manner, reducing the adhesion of powder in the channel.

[0027] The base 17 has a pressure-stabilizing channel 20 connected to an external air pressure system. A metal tube 21 extending to the upper part of the barrel body 18 is embedded at the inner end of the pressure-stabilizing channel 20, as shown in the attached diagram. Figure 6 As shown. The pressure stabilizing channel inside the base is connected to an external air pressure system. The metal tube extends to the upper part of the barrel body, which can balance the air pressure inside the barrel in real time, so that the powder can fall smoothly in a stable air pressure environment and avoid problems such as poor powder flow or blockage caused by air pressure changes.

[0028] The working principle of this utility model is as follows: The drive motor 2 drives the powder tray 4 to rotate within the fixed base 3 through the output shaft. The connecting seat 13 at the bottom of the sheet metal box 1 is rigidly connected to the machine tool motion system, ensuring that the powder feeder moves synchronously with the laser head in three-dimensional motion, thus realizing dynamic powder feeding. The powder slide 5 on the powder tray 4 is engaged with a pair of scrapers 6. When the powder tray rotates, the scrapers 6 slide on the powder slide 5, evenly scraping the powder falling from the powder cylinder 11. The protrusion 15 on the lower surface of the scraper 6 forms a sealed pressing mechanism with the powder slide 5. The groove 16 ensures that the powder is compacted and evenly distributed in the chute; the discharge end of the powder cylinder 11 is embedded in the positioning groove 7 of the feed scraper and directly connected to the material hole 8 at the bottom of the groove. The powder falls into the powder chute 5 through the material hole 8 and is then transported to the discharge scraper by the rotating powder disc 4. The discharge nozzle 10 is also connected to the material hole 8 of the discharge scraper through the positioning groove 7, forming a closed conveying path of powder cylinder, feed scraper, powder chute, discharge scraper and discharge nozzle. The air nozzle 12 introduces carrier air to deliver the powder from the discharge nozzle 10.

Claims

1. A powder feeder for laser cladding processing comprising a sheet metal box (1), characterized in that: The sheet metal box (1) is internally provided with a driving motor (2), the upper end of the sheet metal box (1) is provided with a fixing seat (3), the fixing seat (3) is internally provided with a powder disc (4) connected with the output end of the driving motor (2), the powder disc (4) is provided with a powder chute (5), the powder chute (5) is fitted with a pair of scraping plates (6) for scraping uniform powder, the scraping plates (6) are provided with positioning grooves (7), the groove bottom of the positioning grooves (7) is provided with a material hole (8); the fixing seat (3) is provided with a pressing plate (9), the pressing plate (9) is provided with a discharge nozzle (10), a powder cylinder (11) and a gas feeding nozzle (12) for powder conveying, the discharge ends of the powder cylinder (11) and the discharge nozzle (10) are embedded in the positioning grooves (7), and the discharge end of the powder cylinder (11) is aligned with the material hole (8), after the gas feeding nozzle (12) is connected with carrier gas, the powder is mixed with the carrier gas through the material hole (8) to form a gas-solid flow and is discharged from the discharge nozzle (10).

2. The powder feeder for laser cladding processing according to claim 1, characterized in that: The bottom of the sheet metal box (1) is provided with a connecting seat (13) which moves synchronously with the machine tool movement system outside.

3. The powder feeder for laser cladding processing according to claim 1, characterized in that: The scraping plate (6) comprises a block body (14), the positioning groove (7) is arranged on the upper surface of the block body (14), the lower surface of the block body (14) is provided with a protrusion (15), the protrusion (15) is internally provided with a material pressing groove (16) communicated with the material hole (8).

4. The powder feeder for laser cladding processing according to claim 1, characterized in that: The powder cylinder (11) comprises a base (17) arranged on the pressing plate (9), the base (17) is provided with a material cylinder body (18), the upper end of the material cylinder body (18) is provided with a cover (19); the end of the base (17) is embedded in the positioning groove (7) of the scraping plate (6) on one side.

5. The powder feeder for laser cladding processing according to claim 4, characterized in that: The base (17) is internally provided with a stable pressure channel (20) connected with the gas pressure system outside, the inner end of the stable pressure channel (20) is embedded with a metal pipe (21) extending to the upper part of the material cylinder body (18).

6. The powder feeder for laser cladding processing according to claim 4, characterized in that: The powder channel in the base (17) is a conical channel which is wide at the top and narrow at the bottom.

7. The powder feeder for laser cladding processing according to claim 1, characterized in that: The side of the sheet metal box (1) is provided with a handle (22) and a louver (23).

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