High-precision laser cladding powder feeding equipment capable of adding powder without shutdown

Abstract

The utility model discloses high-precision laser cladding powder feeding equipment capable of adding powder without shutdown, and belongs to the technical field of laser cladding. The high-precision laser cladding powder feeding equipment capable of adding powder without shutdown comprises a control table and further comprises a powder feeding assembly, the powder feeding assembly is located above the control table and comprises an upper powder barrel, a transfer powder barrel, a lower powder barrel, a powder cavity, a speed reducer, a motor, a powder disc and a supporting assembly, a rotating shaft is arranged in the powder disc, and the speed reducer is connected with the motor. The problems that when a powder disc works, inclination is prone to occurring, and after powder is added into a powder feeder, powder carrying argon is prone to being mixed with air, so that argon is not pure are solved. The four supporting assemblies are additionally arranged below the powder disc, the situation that the powder disc inclines can be prevented, a traditional single powder barrel is improved to be in the form that the upper powder barrel, the middle powder barrel and the lower powder barrel are connected, the interior of the upper powder barrel is subjected to gas washing, then powder in the upper powder barrel is conveyed into the lower powder barrel, and therefore the purity of argon is improved.

Description

Technical Field

[0001] This utility model relates to the field of laser cladding technology, specifically a high-precision laser cladding powder feeding device that can add powder without stopping the machine. Background Technology

[0002] Laser cladding is a surface modification technology that involves adding cladding material to the surface of a substrate and then using a high-energy-density laser beam to fuse it together with a thin layer on the substrate surface, forming a metallurgically bonded cladding layer. The powder delivery during laser cladding directly affects the quality of the cladding process. Currently, the market mainly uses a gas-carrying scraper-type powder feeder for powder delivery during the cladding process. The scraper-type powder feeder can precisely control the powder output by adjusting the rotation speed of the turntable. At the same time, the high-purity argon gas used to carry the powder can effectively protect the molten pool. Laser cladding technology can be used for surface modification of gas turbine blades, rolls, gears, etc.; surface repair of rotors, molds, etc.; and rapid prototyping, such as using the layer-by-layer sintering and stacking of metal powders to quickly create models.

[0003] However, existing air scraper-type powder feeders have the following problems:

[0004] 1. In the powder feeder, the powder tray is supported only by the drive shaft during operation, and the powder tray also rotates through the drive shaft. This causes the powder tray to tilt towards the powder cylinder when the powder load is large, which obstructs the rotation of the powder tray and creates a gap between the scraper and the powder tray, affecting the powder transfer efficiency.

[0005] 2. The powder needs to enter the powder cylinder and then the powder chamber. Due to the size limitation of the powder cylinder, frequent powder addition is required when processing large workpieces. The powder addition process will introduce air, which will cause overlapping of the cladding and affect the cladding quality.

[0006] 3. After the powder feeder enters the powder chamber, it can only determine whether there is powder blockage by detecting the air pressure. It cannot directly detect whether there is powder remaining, and there is a possibility of misjudgment during the detection process.

[0007] Therefore, to address the issue of insufficient existing requirements, a high-precision laser cladding powder feeding device capable of continuous powder feeding was proposed. Utility Model Content

[0008] The purpose of this invention is to provide a high-precision laser cladding powder feeding device that can add powder without stopping the machine. By setting four additional support components below the powder tray, the powder tray is prevented from tilting. The traditional single powder cylinder is improved into a form in which an upper powder cylinder, a transfer powder cylinder and a lower powder cylinder are connected. The powder inside the upper powder cylinder is purged before being transferred to the lower powder cylinder, thereby avoiding the influence of air on the cladding process and solving the problems in the prior art.

[0009] To achieve the above objectives, this utility model provides the following technical solution: a high-precision laser cladding powder feeding device capable of continuous powder feeding, comprising a control console and a powder feeding assembly. The powder feeding assembly is located above the control console and includes an upper powder cylinder, a transfer powder cylinder, a lower powder cylinder, a powder cavity, a reducer, a motor, a powder tray, and a support assembly. A rotating shaft is provided inside the powder tray, a pressure plate is provided at the upper end of the rotating shaft, and the lower end of the rotating shaft is connected to the reducer. The reducer is connected to the motor. The powder tray and the support assembly are both located inside the powder cavity, with the support assembly located below the powder tray. A distance sensor and a powder outlet are provided above the powder cavity, and a fixed base is provided inside the powder cavity.

[0010] Preferably, the intermediate powder cylinder is located between the upper powder cylinder and the lower powder cylinder, and a butterfly valve is installed inside the intermediate powder cylinder. A handle is installed on one side of the intermediate powder cylinder, and the butterfly valve is connected to the handle.

[0011] Preferably, the upper end of the powder cylinder is provided with a cover plate, the upper air inlet and the upper air outlet are respectively provided on both sides of the upper powder cylinder, the lower air inlet is provided on one side of the lower powder cylinder, the lower end of the lower powder cylinder is provided with a guide plate, and the lower powder cylinder and the powder chamber are connected through the guide plate.

[0012] Preferably, at least four support components are provided, all of which are installed inside the fixed base. Each support component includes a support base, a ball bearing, and a spring. The spring is located at the lower end of the support base, the ball bearing is located at the upper end of the support base, and the ball bearing is in contact with the bottom of the powder tray.

[0013] Preferably, the powder tray is located above the fixed base, the pressure plate is connected to the powder tray, the powder tray has a groove on its surface, and a powder receiving seat, a first scraper, a powder suction seat, and a second scraper are provided above the powder tray.

[0014] Preferably, the powder receiving seat is located below the powder cylinder, the first scraper is located below the powder receiving seat, the powder suction seat is located below the powder outlet, and the second scraper is located below the powder suction seat.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model features a fixed base and a powder tray inside the powder chamber. A rotating shaft passes through the fixed base and connects to the powder tray at its upper end, placing the powder tray above the fixed base. The fixed base contains four support components, with ball bearings at the upper end of each component contacting the bottom of the powder tray. These four components simultaneously support the powder tray, preventing it from tilting. A distance sensor is also installed above the powder chamber. The powder is located inside a groove on the powder tray surface. The distance sensor emits a laser beam aimed at the inside of the groove. When there is no powder, insufficient powder, or powder accumulation in the groove, the distance sensor detects changes in the powder height. If the height change exceeds a preset range, an alarm is triggered on the control panel, notifying personnel to handle the situation, thus improving feeding efficiency.

[0017] 2. This utility model improves the traditional single powder cylinder by connecting an upper powder cylinder, a transfer powder cylinder, and a lower powder cylinder. When powder is added to the upper powder cylinder, air enters the upper powder cylinder along with the powder. At this time, the upper air inlet and upper air outlet are opened, and argon gas enters the upper powder cylinder from the upper air inlet and exits from the upper air outlet, realizing the replacement of gas in the upper powder cylinder and ensuring the purity of the gas in the upper powder cylinder. Then, the powder enters the lower powder cylinder through the transfer powder cylinder. Since the lower powder cylinder is always in a sealed state and does not come into contact with the outside air, the purity of the argon gas carrying the powder is guaranteed, thus improving the quality of subsequent cladding. Attached Figure Description

[0018] Figure 1 This is the overall front view of the present invention;

[0019] Figure 2 This is a cross-sectional view of the powder feeding component of this utility model;

[0020] Figure 3 This is a partial structural diagram of the powder cavity of this utility model;

[0021] Figure 4 This is a partial structural diagram of the powder tray of this utility model.

[0022] In the diagram: 1. Control console; 2. Powder feeding assembly; 201. Upper powder cylinder; 2011. Upper air inlet; 2012. Upper air outlet; 2013. Cover plate; 202. Transfer powder cylinder; 2021. Handle; 2022. Butterfly valve; 203. Lower powder cylinder; 2031. Lower air inlet; 2032. Guide plate; 204. Powder chamber; 2041. Powder outlet; 2042. Fixing base; 205. Reducer; 206. Motor; 3. Distance sensor; 4. Powder tray; 401. Rotating shaft; 402. Pressure plate; 403. Groove; 404. Powder receiving base; 405. First scraper; 406. Powder suction base; 407. Second scraper; 5. Support assembly; 501. Support base; 502. Ball bearing; 503. Spring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] To address the issues of powder tray tilting during operation, impurities in the argon gas carried by the powder feeder due to mixing with air after powder addition, and misjudgments in the powder feeder's detection of powder blockage, please refer to [link to relevant documentation]. Figure 1-4 This utility model provides an embodiment of a high-precision laser cladding powder feeding device that can add powder without stopping the machine. The device includes a control console 1 and a powder feeding assembly 2, located above the control console 1. The powder feeding assembly 2 includes an upper powder cylinder 201, a transfer powder cylinder 202, a lower powder cylinder 203, a powder cavity 204, a reducer 205, a motor 206, a powder tray 4, and a support assembly 5. A rotating shaft 401 is installed inside the powder tray 4. A pressure plate 402 is installed at the upper end of the rotating shaft 401, and the lower end of the rotating shaft 401 is connected to the reducer 205. The reducer 205 is connected to the motor 206. The powder tray 4 and the support assembly 5 are both located inside the powder cavity 204, with the support assembly 5 located below the powder tray 4. A ranging sensor 3 and a powder outlet 2041 are installed on the top of the powder cavity 204, and a fixed base 2042 is installed inside the powder cavity 204.

[0025] At least four support components 5 are provided, all of which are installed inside the fixed base 2042. Each support component 5 includes a support base 501, a ball bearing 502, and a spring 503. The spring 503 is located at the lower end of the support base 501, and the ball bearing 502 is located at the upper end of the support base 501. The ball bearing 502 is in contact with the bottom of the powder tray 4. The spring 503 continuously provides an upward thrust to the ball bearing 502 to ensure the effectiveness of the support component 5. The four support components 5 support the powder tray 4 at the same time, thereby preventing powder from accumulating on one side of the powder tray 4 and causing the powder tray 4 to tilt. This ensures that the powder tray 4 is always in a stable rotation state, further improving the powder conveying efficiency.

[0026] The upper powder cylinder 201 is provided with a cover plate 2013 at its upper end. The upper powder cylinder 201 is provided with an upper air inlet 2011 and an upper air outlet 2012 on its two sides respectively. The lower powder cylinder 203 is provided with a lower air inlet 2031 on one side. The lower powder cylinder 203 is provided with a guide plate 2032 at its lower end. The lower powder cylinder 203 is connected to the powder chamber 204 through the guide plate 2032. The intermediate powder cylinder 202 is located between the upper powder cylinder 201 and the lower powder cylinder 203. The intermediate powder cylinder 202 is provided with a butterfly valve 2022 inside. The intermediate powder cylinder 202 is provided with a handle 2021 on one side. The butterfly valve 2022 is connected to the handle 2021.

[0027] The traditional single powder cylinder is improved to a configuration where an upper powder cylinder 201, a transfer powder cylinder 202, and a lower powder cylinder 203 are connected. When powder is added to the upper powder cylinder 201, air enters the upper powder cylinder 201 along with the powder. At this time, the upper air inlet 2011 and the upper air outlet 2012 are opened, and argon gas enters the upper powder cylinder 201 through the upper air inlet 2011 and exits through the upper air outlet 2012, thus achieving gas replacement in the upper powder cylinder 201 and ensuring the purity of the argon gas inside the upper powder cylinder 201. Afterward, the powder enters the lower powder cylinder 203 through the transfer powder cylinder 202. Since the lower powder cylinder 203 is always sealed and does not come into contact with the outside air, the purity of the argon gas carrying the powder is guaranteed, further improving the quality of subsequent cladding.

[0028] The powder tray 4 is located above the fixed base 2042. The pressure plate 402 is connected to the powder tray 4. A groove 403 is provided on the top of the powder tray 4. A powder receiving seat 404, a first scraper 405, a powder suction seat 406, and a second scraper 407 are provided on the top of the powder tray 4. The powder receiving seat 404 is located below the lower powder cylinder 203. The first scraper 405 is located below the powder receiving seat 404. The powder suction seat 406 is located below the powder outlet 2041. The second scraper 407 is located below the powder suction seat 406.

[0029] The powder is located inside the groove 403 on the surface of the powder tray 4. The ranging sensor 3 emits a ranging laser that is aimed at the inside of the groove 403. When there is no powder, little powder, or powder accumulation in the groove 403, the ranging sensor 3 senses the change in the height of the powder in the groove 403. If the height change exceeds the preset range, the control panel 1 will sound an alarm and notify personnel to handle the situation. Compared with the traditional method of detecting air pressure to determine whether there is powder blockage, this method reduces the phenomenon of false judgment and further improves the feeding efficiency.

[0030] Working principle: After opening the cover plate 2013, add powder to the upper powder cylinder 201, then close the cover plate 2013. Argon gas enters the upper powder cylinder 201 from the upper air inlet 2011 and exits from the upper air outlet 2012, thus ensuring the purity of the argon gas in the upper powder cylinder 201. Then close the upper air outlet 2012 and open the lower air inlet 2031. At this time, open the butterfly valve 2022 until the powder is completely inside the lower powder cylinder 203, then close the butterfly valve 2022. Finally, the powder feeder feeds powder normally. When the distance sensor 3 detects that there is no powder, the powder is low, or the powder is piled up, the control panel 1 alarms and notifies personnel to handle the situation. The four support components 5 support the powder tray 4 at the same time, thus preventing the powder from piling up on one side of the powder tray 4 and causing the powder tray 4 to tilt. This ensures that the powder tray 4 is always in a stable rotating state, improving the powder conveying efficiency.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A high-precision laser cladding powder feeding device capable of continuous powder feeding, comprising a control console (1), characterized in that; It also includes a powder feeding assembly (2), which is located above the control panel (1). The powder feeding assembly (2) includes an upper powder cylinder (201), a transfer powder cylinder (202), a lower powder cylinder (203), a powder cavity (204), a reducer (205), a motor (206), a powder tray (4), and a support assembly (5). The powder tray (4) is equipped with a rotating shaft (401) inside. The upper end of the rotating shaft (401) is equipped with a pressure plate (402). The lower end of the rotating shaft (401) is connected to the reducer (205). The reducer (205) is connected to the motor (206). The powder tray (4) and the support assembly (5) are both located inside the powder cavity (204). The support assembly (5) is located below the powder tray (4). The powder cavity (204) is equipped with a distance sensor (3) and a powder outlet (2041). The powder cavity (204) is equipped with a fixed seat (2042).

2. The high-precision laser cladding powder feeding equipment capable of continuous powder feeding according to claim 1, characterized in that: The intermediate powder cylinder (202) is located between the upper powder cylinder (201) and the lower powder cylinder (203). A butterfly valve (2022) is installed inside the intermediate powder cylinder (202), and a handle (2021) is installed on one side of the intermediate powder cylinder (202). The butterfly valve (2022) is connected to the handle (2021).

3. The high-precision laser cladding powder feeding equipment capable of continuous powder feeding according to claim 1, characterized in that: The upper powder cylinder (201) is provided with a cover plate (2013) at its upper end. The upper powder cylinder (201) is provided with an upper air inlet (2011) and an upper air outlet (2012) on its two sides respectively. The lower powder cylinder (203) is provided with a lower air inlet (2031) on one side. The lower powder cylinder (203) is provided with a guide plate (2032) at its lower end. The lower powder cylinder (203) is connected to the powder chamber (204) through the guide plate (2032).

4. The high-precision laser cladding powder feeding equipment capable of continuous powder feeding according to claim 1, characterized in that: At least four support components (5) are provided, all of which are installed inside the fixed base (2042). The support component (5) includes a support base (501), a ball bearing (502) and a spring (503). The spring (503) is located at the lower end of the support base (501), and the ball bearing (502) is located at the upper end of the support base (501). The ball bearing (502) is in contact with the bottom of the powder tray (4).

5. The high-precision laser cladding powder feeding equipment capable of continuous powder feeding according to claim 1, characterized in that: The powder tray (4) is located above the fixed base (2042), the pressure plate (402) is connected to the powder tray (4), the powder tray (4) is provided with a groove (403), and the powder receiving seat (404), the first scraper (405), the powder suction seat (406) and the second scraper (407) are provided above the powder tray (4).

6. A high-precision laser cladding powder feeding device capable of continuous powder feeding according to claim 5, characterized in that: The powder receiving seat (404) is located below the lower powder cylinder (203), the first scraper (405) is located below the powder receiving seat (404), the powder suction seat (406) is located below the powder outlet (2041), and the second scraper (407) is located below the powder suction seat (406).

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