A powder feeder

Abstract

The utility model provides a kind of powder feeder, comprising: control cabinet body;Powder disc transmission assembly, two the powder disc transmission assembly symmetry is installed on control cabinet body upper end, two the powder disc transmission assembly inside are movably installed powder disc;Powder disc assembly, two the powder disc assembly is respectively installed in two powder disc transmission assembly upper end, the powder disc assembly lower end and powder disc upper end between adhere to powder scraping block and suction block, the powder scraping block and suction block are all with corresponding powder disc assembly intercommunication arrangement;Powder storage barrel assembly, two the powder storage barrel assembly is respectively intercommunication installed in two powder disc assembly upper end, two the powder storage barrel assembly upper portion annular end is all intercommunication and is set to powder storage barrel air inlet pipe, two the powder storage barrel assembly inside are all installed stirring assembly, this design realizes to powder and carries out stable, uniform, continuous quantitative conveying operation, effectively reduces the defect probability of subsequent processing position, effectively guarantees powder feeding effect and processing quality.

Description

Technical Field

[0001] This utility model is a powder feeder, belonging to the field of additive manufacturing technology. Background Technology

[0002] Laser cladding is fundamental in laser remanufacturing technology. Laser cladding utilizes a high-energy-density laser beam to generate a rapid condensation process, forming an alloy cladding layer on the substrate surface that is fused with the substrate and has completely different composition and properties. When the laser strikes the substrate surface, the high temperature causes localized melting of the substrate, forming a molten pool. Alloy powder falls into the molten pool, melts, and simultaneously cools rapidly, forming the cladding layer together with the substrate. The quality of the cladding layer depends not only on the material properties and laser process parameters but also on the uniformity of the powder falling into the molten pool. The function of the powder feeder is to uniformly and accurately deliver powder to the processing area according to process requirements; therefore, the performance of the powder feeder directly affects the quality of the cladding layer.

[0003] Variations in powder feeding quality can affect the probability of defects such as uneven cladding layer thickness and low bonding strength. With the increasing applications of laser cladding, higher and higher demands are being placed on the performance of powder feeders. In particular, the large-scale use of metal powders requires powder feeders to uniformly and continuously transport powders of different materials and mixed powders from different materials over long distances, necessitating the development of new powder feeders suitable for these requirements. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a powder feeder to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a powder feeder, comprising:

[0006] Control cabinet;

[0007] Two powder tray drive assemblies are provided, and the two powder tray drive assemblies are symmetrically installed on the upper end of the control cabinet. A powder feeding tray is movably installed in each of the two powder tray drive assemblies.

[0008] Two powder feeding tray assemblies are provided. The two powder feeding tray assemblies are respectively installed on the upper end of two powder tray transmission assemblies. A powder scraper and a powder suction block are attached between the lower end of the powder feeding tray assembly and the upper end of the powder feeding tray. The powder scraper and the powder suction block are both connected to the corresponding powder feeding tray assembly, and the powder suction block is located to the right of the powder scraper.

[0009] Two powder storage tank assemblies are provided. The two powder storage tank assemblies are respectively connected and installed on the upper end of two powder feeding tray assemblies. The upper annular end of each of the two powder storage tank assemblies is connected to a powder storage tank air inlet pipe. A stirring assembly is installed inside each of the two powder storage tank assemblies.

[0010] Furthermore, the powder storage tank assembly includes a metal tank body, an outer heating plate is fitted onto the annular end of the metal tank body, a top plate is installed on the upper end of the metal tank body, and the top plate is located above the outer heating plate. The top plate has an annular structure, and a powder storage tank air inlet pipe is provided at the annular end of the top plate. The powder storage tank air inlet pipe is connected to the metal tank body through the top plate.

[0011] The lower end of the metal barrel is connected to a funnel-shaped barrel neck, the diameter of which gradually decreases from top to bottom. A connecting cylinder is connected to the lower end of the funnel-shaped barrel neck, and a powder discharge pipe is connected to the lower annular end of the funnel-shaped barrel neck. The opening end of the powder discharge pipe is equipped with a first plug plunger.

[0012] Furthermore, the mixing assembly includes a powder storage tank adapter plate, which is installed on the upper end of the top plate of the tank body. A connecting block is provided in the middle of the upper end of the powder storage tank adapter plate. A first reducer is installed on the upper end of the connecting block. A power motor is provided on the upper end of the first reducer, and the output shaft of the power motor is connected to the input shaft of the first reducer. The upper end of the powder storage tank adapter plate is recessed downward to form a feeding port, and the feeding port penetrates the powder storage tank adapter plate. A tank cover knob is installed on the feeding port, and the tank cover knob is located on the outside of the connecting block.

[0013] The upper end of the powder storage tank adapter plate is rotatably connected to the transfer flange sleeve, and the transfer flange sleeve is located inside the connecting block. The annular end of the transfer flange sleeve is sealed to the connecting block through the first sealing element. The lower end of the transfer flange sleeve extends to the lower side of the powder storage tank adapter plate. The output shaft of the first reducer passes through the connecting block and is connected to the transfer flange sleeve. The lower end of the transfer flange sleeve is equipped with a stirring rack shaft through a coupling. The lower end of the stirring rack shaft passes through the top plate of the tank body and extends into the metal tank body. A drive shaft is installed at the lower end of the stirring rack shaft. Multiple stirring racks are equidistantly arranged at the annular end of the drive shaft. Both the stirring racks and the drive shaft are located inside the metal tank body.

[0014] Furthermore, the powder feeding tray assembly includes a powder feeding tray cavity top plate, the upper surface of the powder feeding tray cavity top plate is recessed downward to form a first mounting hole and a second mounting hole, and both the first mounting hole and the second mounting hole penetrate through the powder feeding tray cavity top plate. The first mounting hole is located to the left of the second mounting hole, and the lower end of the powder feeding tray cavity top plate is in contact with the upper end of the powder scraping block and the upper end of the powder suction block.

[0015] The powder feeding tray cavity has a powder outlet transition plate at its upper end, and the lower end of the powder outlet transition plate passes through the first mounting hole. A powder feeding pipe is provided in the middle of the upper end of the powder outlet transition plate, and the lower end of the powder feeding pipe extends to the lower end of the powder outlet transition plate. A second plug plunger is fitted at the upper end of the powder feeding pipe. A powder storage tank guide block is installed at the upper end of the powder feeding tray cavity, and the lower end of the powder storage tank guide block passes through the second mounting hole. The powder storage tank guide block has a hollow structure and is connected to the lower end of the connecting cylinder.

[0016] Furthermore, the upper end of the powder feeding tray is recessed downward to form an annular groove, the lower end of the powder suction block is equipped with a first guide strip, and the first guide strip is located in the annular groove. A V-shaped groove is opened at the front end of the powder suction block, and the V-shaped groove is arranged to be wider at the front and narrower at the back. The upper end of the powder suction block is recessed downward to form a first groove. The bottom end of the first groove is recessed downward to form a through hole. The lower end of the first guide strip is recessed upward to form a first waist groove, and the upper end of the first waist groove is connected to the lower end of the through hole. The opening of the first waist groove is connected to the V-shaped groove. The lower end of the powder outlet transition plate extends into the first groove, and the powder outlet transition plate is sealed to the first groove.

[0017] The lower end of the powder scraper is equipped with a second guide strip, which is located in the annular groove. The upper end of the powder scraper is recessed downward to form a second groove. The bottom end of the second groove is recessed downward to form a through groove. The lower end of the second guide strip is recessed upward to form a second waist groove. The upper end of the second waist groove is connected to the lower end of the through groove. The rear end of the second waist groove extends to the rear end of the second guide strip. The lower end of the powder storage bucket guide block extends into the second groove, and the powder storage bucket guide block is sealed to the second groove.

[0018] Furthermore, the powder tray transmission assembly includes a powder feeding tray cavity, which is located at the upper end of the control cabinet and extends into the control cabinet. A top plate is installed at the upper end of the powder feeding tray cavity. The powder feeding tray, the powder scraper, and the powder suction block are all located within the powder feeding tray cavity. A second reducer is installed at the lower end of the powder feeding tray cavity. A brushless DC motor is installed at the lower end of the second reducer, and the output shaft of the brushless DC motor is connected to the input shaft of the second reducer. The output shaft of the second reducer is connected to a first-stage floating T-shaped transition shaft via an axial keyway. A compression spring is installed between the upper end of the output shaft of the second reducer and the top end of the inner part of the first-stage floating T-shaped transition shaft.

[0019] The outer end of the primary floating T-shaped transition shaft is fitted with a secondary floating stepped shaft. The upper end of the secondary floating stepped shaft is connected to the lower end of the powder feeding tray. An annular fixing member is installed in the middle of the bottom end of the powder feeding tray cavity, and the annular fixing member is located on the lower side of the powder feeding tray. The annular fixing member is fitted on the annular end of the secondary floating stepped shaft. The upper and lower ends of the annular fixing member are sealed to the annular end of the secondary floating stepped shaft through a second sealing member. The upper end of the compression spring passes through the primary floating T-shaped transition shaft and is connected to the top end of the secondary floating stepped shaft.

[0020] Furthermore, the bottom of the powder feeding disc cavity is recessed downwards to form an annular discharge groove, which is located outside the annular fixing member. The cross-section of the annular discharge groove is V-shaped. An air inlet pipe is installed on the upper end of the top plate of the powder feeding disc cavity, and the air inlet pipe penetrates through the top plate of the powder feeding disc cavity. The bottom of the powder feeding disc cavity is recessed upwards to form a bottom powder discharge port, which is located outside the second reducer. The upper end of the bottom powder discharge port is connected to the lower end of the annular discharge groove, and a plug is installed inside the bottom powder discharge port.

[0021] Furthermore, the upper surface of the powder feeding tray cavity top plate is recessed downward to form two observation ports, and the observation ports penetrate through the powder feeding tray cavity top plate. The two observation ports are arranged symmetrically, and a transparent plate is provided in each of the two observation ports.

[0022] Furthermore, a powder-breaking rod is installed at the lower end of the top plate of the powder feeding tray cavity, and the lower end of the powder-breaking rod extends into the annular groove. The powder-breaking rod is located in front of the powder suction block and in front of the powder scraping block.

[0023] The beneficial effects of this utility model are:

[0024] Gas can be supplied into the metal barrel, thereby applying downward pressure to the powder inside. Under this downward pressure, the powder inside the metal barrel is forced along the funnel-shaped neck, connecting cylinder, powder storage guide block, second groove, through groove, and second waist groove into the annular groove on the powder feeding disc. Simultaneously, using components such as a brushless DC motor and a second reducer, the powder feeding disc is driven to rotate, causing the powder in the annular groove to rotate, thereby continuously supplying powder into the first waist groove of the powder suction block. The gas supplied into the metal barrel also enters the first waist groove along with the powder, forming a powder-carrying gas. Under the action of the powder-carrying gas, the powder in the first waist groove is pushed along the through hole and the first groove. The trough is pressed into the powder feeding pipe, thus completing the powder feeding operation. At this time, the powder scraper and the powder suction block are in a "non-bolt-locked" state, but are pressed by the top plate of the powder feeding disc cavity, and the powder scraper and the powder suction block are in a friction state with the powder feeding disc. Moreover, during the rotation of the powder feeding disc, the powder scraper and the powder suction block are in a stationary state, and with the assistance of the annular groove on the powder feeding disc, the powder is conveyed in one direction, and the powder in the annular groove accurately reaches the first waist groove, preventing the powder from being carried away from the powder outlet area. This achieves stable, uniform, continuous quantitative powder feeding, effectively reducing the probability of defects in subsequent processing positions, and effectively ensuring the powder feeding effect and processing quality. Attached Figure Description

[0025] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0026] Figure 1 This is a schematic diagram of the structure of a powder feeder according to the present invention;

[0027] Figure 2 This is a cross-sectional view of a powder storage tank assembly in a powder feeder according to the present invention.

[0028] Figure 3 This is an assembly diagram of the top plate of the powder feeding disc cavity and the powder feeding disc cavity in a powder feeder according to the present invention;

[0029] Figure 4 This is a perspective view of a powder storage tank assembly in a powder feeder according to the present invention.

[0030] Figure 5 This is a perspective view of the stirring component in a powder feeder according to the present invention;

[0031] Figure 6 This is a cross-sectional view of the stirring assembly in a powder feeder according to the present invention;

[0032] Figure 7 This is a perspective view of a powder tray transmission assembly in a powder feeder according to the present invention.

[0033] Figure 8This is a bottom view of the powder tray transmission assembly in a powder feeder according to the present invention.

[0034] Figure 9 This is a perspective view of the top plate of the powder feeding tray cavity in a powder feeder according to the present invention;

[0035] Figure 10 This is a perspective view of the powder tray cavity in a powder feeder according to the present invention;

[0036] Figure 11 This is a perspective view of the powder feeding tray in a powder feeder according to the present invention;

[0037] Figure 12 This is a perspective view of a powder scraper block in a powder feeder according to the present invention;

[0038] Figure 13 This is a perspective view of a powder-absorbing block in a powder feeder according to the present invention;

[0039] Figure 14 This is a cross-sectional view of the powder feeding disc cavity in a powder feeder according to the present invention;

[0040] Figure 15 This is an assembly drawing of the top plate of the powder feeding disc cavity, the powder feeding disc, and the powder breaking rod in a powder feeder of this utility model;

[0041] In the picture:

[0042] 1-Control cabinet;

[0043] 2-Agitator assembly, 201-Power motor, 202-First reducer, 203-Connecting block, 204-Powder storage tank adapter plate, 205-Agitator frame shaft, 206-Drive shaft, 207-Agitator frame, 208-Coupling, 209-Transfer flange sleeve, 210-First seal;

[0044] 3-Powder storage bin assembly, 301-Powder storage bin air inlet pipe, 302-External heating plate, 303-Metal bin body, 304-Funnel-shaped bin neck, 305-Connecting cylinder, 306-Bin body top plate, 307-Powder discharge pipe, 308-Bin lid knob;

[0045] 4-Powder feeding tray assembly, 401-Powder storage bucket guide block, 402-Powder feeding tray cavity top plate, 4021-Observation port, 4022-Powder feeding tray cavity air inlet pipe, 4023-First mounting hole, 4024-Second mounting hole, 403-Powder outlet transition plate, 404-Powder feeding pipe;

[0046] 405-Powder suction block, 4051-First groove, 4052-V-shaped groove, 4053-First guide bar, 4054-Through hole, 4055-First waist groove, 406-Powder feeding tray, 4061-Annular groove, 407-Powder scraping block, 4071-Through groove, 4072-Second groove, 4073-Second guide bar, 4074-Second waist groove, 408-Bottom powder discharge port, 409-Powder breaking rod;

[0047] 5-Powder tray drive assembly, 501-Brushless DC motor, 502-Second reducer, 503-Powder tray cavity, 504-Second seal, 505-Compression spring, 506-Annular fastener, 507-Secondary floating stepped shaft, 508-First-stage floating T-type transition shaft. Detailed Implementation

[0048] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0049] Example 1: As Figures 1-14 As shown, this utility model provides a technical solution: a powder feeder, including: a control cabinet 1, two powder tray transmission assemblies 5 symmetrically installed on the upper end of the control cabinet 1, the control cabinet 1 provides a mounting carrier for the powder tray transmission assemblies 5 and other components, the powder tray transmission assembly 5 includes a powder feeding tray cavity 503, a second reducer 502 and a brushless DC motor 501, the powder feeding tray cavity 503 is located on the upper end of the control cabinet 1, and the lower end of the powder feeding tray cavity 503 extends into the control cabinet 1, the powder feeding tray 406, the powder scraper 407 and the powder suction block 405 are all located in the powder feeding tray cavity 503, the powder feeding tray cavity 503 provides installation space for the powder feeding tray 406 and other components;

[0050] The fixing part of the second reducer 502 is installed on the lower end of the powder feeding tray cavity 503. The fixing part of the brushless DC motor 501 is set on the lower end of the second reducer 502, and the output shaft of the brushless DC motor 501 is connected to the input shaft of the second reducer 502. The brushless DC motor 501 and the second reducer 502 are used together to drive the powder feeding tray 406 to rotate. The output shaft of the second reducer 502 is connected to the first-stage floating T-type transition shaft 508 through an axial keyway. The first-stage floating T-type transition shaft 508 provides a mounting carrier for components such as the compression spring 505. The second-stage floating stepped shaft 507 is fitted on the outer end of the first-stage floating T-type transition shaft 508, and the upper end of the second-stage floating stepped shaft 507 is connected to the lower end of the powder feeding tray 406. The first-stage floating T-type transition shaft 508 and the powder feeding tray 406 are connected through the second-stage floating stepped shaft 507.

[0051] The annular fixing member 506 located on the lower side of the powder feeding tray 406 is installed on the middle of the bottom end inside the powder feeding tray cavity 503, and the annular fixing member 506 is fitted on the annular end of the secondary floating step shaft 507. The upper and lower ends of the annular fixing member 506 are sealed to the annular end of the secondary floating step shaft 507 through the second sealing member 504. The annular fixing member 506 is used to position and install the secondary floating step shaft 507, and the two second sealing members 504 make the upper and lower ends of the annular fixing member 506 sealed to the secondary floating step shaft 507. The second sealing member 504 can be annular rubber gaskets.

[0052] Compression spring 505 is disposed between the upper end of the output shaft of the second reducer 502 and the inner top end of the first-stage floating T-shaped transition shaft 508. The upper end of compression spring 505 passes through the first-stage floating T-shaped transition shaft 508 and is connected to the inner top end of the second-stage floating stepped shaft 507. Through compression spring 505, upward thrust is applied to both the first-stage floating T-shaped transition shaft 508 and the second-stage floating stepped shaft 507.

[0053] An annular discharge groove is formed by a downward-facing indentation at the bottom of the powder feeding tray cavity 503. The cross-section of the annular discharge groove located outside the annular fixing member 506 is V-shaped. The annular discharge groove is used to collect scattered powder. The air inlet pipe 4022 of the powder feeding tray cavity is installed on the upper end of the top plate 402 of the powder feeding tray cavity and penetrates the top plate 402 of the powder feeding tray cavity. Gas is delivered into the powder feeding tray cavity 503 through the air inlet pipe 4022 to assist in the discharge of fallen powder.

[0054] A bottom powder discharge port 408 is formed by an upward indentation at the lower end of the powder feeding disc cavity 503, and the bottom powder discharge port 408 is located outside the second reducer 502. The upper end of the bottom powder discharge port 408 is connected to the lower end of the annular discharge trough. The powder collected in the annular discharge trough is discharged through the bottom powder discharge port 408. A plug is installed in the bottom powder discharge port 408 to seal the bottom powder discharge port 408.

[0055] Two powder feeding tray assemblies 4 are respectively installed on the upper ends of the two powder feeding tray cavities 503. The powder feeding tray assembly 4 includes a powder feeding tray cavity top plate 402, a powder outlet transition plate 403, and a powder storage tank guide block 401. The powder feeding tray cavity top plate 402 is installed on the upper end of the powder feeding tray cavity 503. Through the powder feeding tray cavity top plate 402, on the one hand, the opening of the powder feeding tray cavity 503 is sealed, and on the other hand, the powder outlet transition plate 403 and other components are provided with an installation carrier.

[0056] A first mounting hole 4023 and a second mounting hole 4024 are recessed downward on the upper end of the top plate 402 of the powder feeding tray cavity. Both the first mounting hole 4023 and the second mounting hole 4024 penetrate the top plate 402 of the powder feeding tray cavity. The first mounting hole 4023 is located to the left of the second mounting hole 4024. The first mounting hole 4023 provides installation space for the powder outlet transition plate 403, and the second mounting hole 4024 provides installation space for the powder storage bucket guide block 401.

[0057] An annular groove 4061 is formed by a downward recess on the upper end of the powder feeding tray 406. The annular groove 4061 is used to transport powder. The lower end of the powder scraper block 407 is in contact with the upper end of the powder feeding tray 406, and the upper end of the powder scraper block 407 is in contact with the lower end of the top plate 402 of the powder feeding tray cavity. The powder scraper block 407 provides a processing carrier for components such as the second guide bar 4073. The second guide bar 4073, located in the annular groove 4061, is installed on the lower end of the powder scraper block 407. The second guide bar 4073 is used to position and install the powder scraper block 407 and the powder feeding tray 406.

[0058] A second groove 4072 is formed by recessing the upper end of the powder scraper block 407 downwards. The second groove 4072 provides working space for powder feeding. A through groove 4071 is formed by recessing the bottom end of the second groove 4072 downwards. The through groove 4071 connects the second groove 4072 and the second waist groove 4074. A second waist groove 4074 is formed by recessing the lower end of the second guide bar 4073 upwards. The upper end of the second waist groove 4074 is connected to the lower end of the through groove 4071. The rear end of the second waist groove 4074 extends to the rear end of the second guide bar 4073. Powder feeding is performed into the annular groove 4061 through the second waist groove 4074.

[0059] The lower end of the powder suction block 405 is in contact with the upper end of the powder feeding tray 406, and the upper end of the powder suction block 405 is in contact with the lower end of the top plate 402 of the powder feeding tray cavity. The powder suction block 405 is located to the right of the powder scraper block 407. The powder suction block 405 provides a processing carrier for components such as the first guide bar 4053. The first guide bar 4053 located in the annular groove 4061 is installed on the lower end face of the powder suction block 405. The powder suction block 405 and the powder feeding tray 406 are positioned and installed through the first guide bar 4053. A V-shaped groove 4052 is opened at the front end of the powder suction block 405, and the V-shaped groove 4052 is arranged to be wider at the front and narrower at the back. The powder entering the first waist groove 4055 is collected through the V-shaped groove 4052.

[0060] A first groove 4051 is formed by recessing the upper end of the powder suction block 405 downwards, providing working space for powder discharge. A through hole 4054 is formed by recessing the bottom end of the first groove 4051 downwards, allowing the first groove 4051 and the first waist groove 4055 to be connected through the through hole 4054. A first waist groove 4055 is formed by recessing the lower end of the first guide strip 4053 upwards, with the upper end of the first waist groove 4055 connected to the lower end of the through hole 4054. The opening of the first waist groove 4055 is connected to the V-shaped groove 4052, allowing the powder in the annular groove 4061 to enter the through hole 4054 through the first waist groove 4055.

[0061] The powder outlet transition plate 403 is set on the upper end of the top plate 402 of the powder feeding tray cavity, and the lower end of the powder outlet transition plate 403 passes through the first mounting hole 4023. The lower end of the powder outlet transition plate 403 extends into the first groove 4051, and the powder outlet transition plate 403 is sealed to the first groove 4051. The powder outlet transition plate 403 provides a mounting carrier for the powder feeding pipe 404. The powder feeding pipe 404 is set on the middle of the upper end of the powder outlet transition plate 403, and the lower end of the powder feeding pipe 404 extends to the lower end of the powder outlet transition plate 403. Powder is conveyed outward through the powder feeding pipe 404. The second plug plunger is assembled on the upper end of the powder feeding pipe 404. The opening at the upper end of the powder feeding pipe 404 is sealed by the second plug plunger.

[0062] A hollow powder storage bucket guide block 401 is installed on the upper end of the top plate 402 of the powder feeding tray cavity, and the lower end of the powder storage bucket guide block 401 passes through the second mounting hole 4024. The lower end of the powder storage bucket guide block 401 extends into the second groove 4072, and the powder storage bucket guide block 401 is sealed to the second groove 4072. Powder is conveyed into the second groove 4072 through the powder storage bucket guide block 401.

[0063] Two powder storage bin assemblies 3 are respectively connected and installed on the upper ends of the two powder storage bin guide blocks 401. The powder storage bin assembly 3 includes a top plate 306, an outer heating plate 302, a funnel-shaped neck 304, and a connecting cylinder 305. The connecting cylinder 305 is connected and installed on the upper end of the powder storage bin guide block 401. Through the connecting cylinder 305, the funnel-shaped neck 304 and the powder storage bin guide block 401 are in a connected state. The funnel-shaped neck 304 is connected and installed on the upper end of the connecting cylinder 305. The diameter of the funnel-shaped neck 304 gradually decreases from top to bottom. Through the funnel-shaped neck 304, the powder in the metal bin 303 is transported to the connecting cylinder 305.

[0064] The powder discharge pipe 307 is connected and installed on the lower annular end of the funnel-shaped neck 304. The powder remaining in the metal barrel 303 is discharged outward through the powder discharge pipe 307. The first plug plunger is assembled on the open end of the powder discharge pipe 307. The open end of the powder discharge pipe 307 is sealed through the first plug plunger. The metal barrel 303 is connected and installed on the upper end of the funnel-shaped neck 304. The powder is temporarily stored through the metal barrel 303.

[0065] An outer heating plate 302 is fitted onto the annular end of the metal barrel 303. The outer heating plate 302 heats the powder inside the metal barrel 303. The barrel top plate 306, located above the outer heating plate 302, is installed on the upper end of the metal barrel 303. The barrel top plate 306 has an annular structure. The barrel top plate 306 provides a mounting carrier for components such as the powder storage barrel air inlet pipe 301. The powder storage barrel air inlet pipe 301 is set on the annular end of the barrel top plate 306. The powder storage barrel air inlet pipe 301 is connected to the metal barrel 303 through the barrel top plate 306. Gas is delivered into the metal barrel 303 through the powder storage barrel air inlet pipe 301.

[0066] Two mixing components 2 are respectively installed inside two powder storage tank components 3. Each mixing component 2 includes a powder storage tank adapter plate 204, a connecting block 203, a power motor 201, a first reducer 202, a mixing frame shaft 205, a transmission shaft 206, and a mixing frame 207. The powder storage tank adapter plate 204 is installed on the upper end of the top plate 306 of the tank body. Through the powder storage tank adapter plate 204, the opening at the upper end of the top plate 306 of the tank body is sealed, and a mounting surface is provided for the connecting block 203. The body has a connecting block 203 located on the upper middle part of the powder storage tank adapter plate 204. The connecting block 203 provides an installation carrier for the first reducer 202. The fixing part of the first reducer 202 is installed on the upper end of the connecting block 203. The fixing part of the power motor 201 is located on the upper end of the first reducer 202, and the output shaft of the power motor 201 is connected to the input shaft of the first reducer 202. The first reducer 202 and the power motor 201 work together to drive the stirring rack 207 to rotate.

[0067] The transfer flange sleeve 209, located within the connecting block 203, is rotatably connected to the upper end of the powder storage tank adapter plate 204. The annular end of the transfer flange sleeve 209 is sealed to the connecting block 203 via the first sealing element 210. The lower end of the transfer flange sleeve 209 extends to the lower side of the powder storage tank adapter plate 204. The output shaft of the first reducer 202 passes through the connecting block 203 and is connected to the transfer flange sleeve 209. The mixing rack shaft 205 is positioned below the transfer flange sleeve 209 via a coupling 208. The bottom end of the mixing rack shaft 205 passes through the top plate 306 of the barrel and extends into the metal barrel 303. The intermediate flange sleeve 209 is used in conjunction with the coupling 208 to connect the first reducer 202 and the mixing rack shaft 205. The first seal 210 is used to seal the connection between the intermediate flange sleeve 209 and the connecting block 203. The first seal 210 can be an annular rubber ring. The mixing rack shaft 205 provides a mounting carrier for the drive shaft 206.

[0068] The drive shaft 206 is installed on the lower end of the stirring rack shaft 205 and is located inside the metal barrel 303. The drive shaft 206 provides a mounting carrier for the stirring rack 207. Multiple stirring racks 207 are equidistantly arranged on the annular end of the drive shaft 206 and are located inside the metal barrel 303. Multiple stirring racks 207 are used in conjunction to stir the powder inside the metal barrel 303.

[0069] Two observation ports 4021 are formed by a downward-facing recess on the upper end of the powder feeding tray cavity top plate 402, and the observation ports 4021 penetrate through the powder feeding tray cavity top plate 402. The two observation ports 4021 are symmetrically arranged, and the observation ports 4021 provide installation space for the transparent plates. The two transparent plates are respectively set in the two observation ports 4021, which allows direct observation of the powder feeding operation on the powder feeding tray 406, and ensures that the powder feeding tray cavity 503 is sealed. A feeding port is formed by a downward-facing recess on the upper end of the powder storage tank adapter plate 204, and the feeding port penetrates through the powder storage tank adapter plate 204. Powder is added into the metal tank body 303 through the feeding port. The tank cover knob 308 located on the outside of the connecting block 203 is assembled on the feeding port, and the feeding port is sealed by the tank cover knob 308.

[0070] In use, first split the gas supply line into two parts and connect them to the air inlet pipe 301 of the powder storage tank and the air inlet pipe 4022 of the powder delivery tray cavity, respectively. Then, remove the second plug plunger on the powder delivery pipe 404 and connect the powder delivery pipe 404 to the powder delivery line in the laser head. Then, remove the lid knob 308 and add powder into the metal barrel 303 through the feeding port. After adding, reassemble the lid knob 308 onto the feeding port to make the metal barrel 303 sealed.

[0071] The power motor 201 is restarted, and under the transmission of the first reducer 202, the transfer flange sleeve 209 and the coupling 208 are rotated, which in turn causes the stirring rack shaft 205 to rotate, thereby causing the transmission shaft 206 to rotate, and in turn causing multiple stirring racks 207 to rotate, thereby stirring the powder in the metal barrel 303. The stirring rack 207 is made of stainless steel round bar bent into an irregular shape, which increases the contact area between the powder and the rotation process. Especially for powders with poor flowability, the stirring operation can accelerate their flow and break up powder clumps, so that the powder can be fed stably.

[0072] Simultaneously, the circuit of the peripheral heating plate 302 is turned on, thereby generating heat in the peripheral heating plate 302. The generated heat is conducted through the barrel wall of the metal barrel 303 to the powder inside the metal barrel 303, thereby preheating and drying the powder inside the metal barrel 303. This effectively prevents the powder inside the metal barrel 303 from agglomerating due to moisture, and achieves stirring and drying of the powder inside the metal barrel 303. This effectively reduces the probability of powder blockage during transportation and effectively ensures powder feeding effect and processing quality.

[0073] Then, gas is supplied into the metal barrel 303 through the air inlet pipe 301 of the powder storage barrel. The gas can be an inert gas, so that the gas pressure inside the metal barrel 303 is greater than the atmospheric pressure outside. Under the action of the gas pressure, a downward pressure can be applied to the powder inside the metal barrel 303. Under the action of the downward pressure, the powder inside the metal barrel 303 can be pressed into the powder storage barrel guide block 401 along the funnel-shaped barrel neck 304 and the connecting cylinder 305. Then, the powder inside the powder storage barrel guide block 401 is pressed into the second groove 4072 on the powder scraper block 407. Then, the powder in the second groove 4072 is pressed into the annular groove 4061 on the powder feeding plate 406 along the through groove 4071 and the second waist groove 4074.

[0074] Simultaneously, the brushless DC motor 501 is started, and under the transmission of the second reducer 502, it drives the first-stage floating T-shaped transition shaft 508 to rotate, thereby causing the second-stage floating stepped shaft 507 to rotate, which in turn causes the powder feeding tray 406 to rotate, thus causing the powder entering the annular groove 4061 to rotate. At this time, the powder continues to be conveyed into the annular groove 4061 through components such as the powder storage bucket guide block 401, and the powder is continuously conveyed into the annular groove 4061. The powder is spread out in the annular groove 4061, and then the powder in the annular groove 4061 is collected by the V-shaped groove 4052 and enters the first waist groove 4055.

[0075] At this time, the gas delivered into the metal barrel 303 will also enter the first waist groove 4055 along with the powder and form a powder-carrying gas. Under the action of the powder-carrying gas, the powder in the first waist groove 4055 is pressed into the powder feeding pipe 404 along the through hole 4054 and the first groove 4051. Then, the powder is transported to the powder feeding pipeline in the laser head through the powder feeding pipe 404, and then sprayed onto the working position to complete the processing operation. Thus, the entire powder transfer process is completed.

[0076] At this time, both the powder scraper block 407 and the powder suction block 405 are in a "non-bolt-locked" state. They are pressed by the top plate 402 of the powder feeding tray cavity, and both the powder scraper block 407 and the powder suction block 405 are in a state of friction with the powder feeding tray 406. During the rotation of the powder feeding tray 406, the powder scraper block 407 and the powder suction block 405 are in a stationary state. With the assistance of the annular groove 4061 on the powder feeding tray 406, the powder is conveyed in one direction, so that the powder on the annular groove 4061 accurately reaches the first waist groove 4055 and prevents the powder from being carried away from the powder outlet area. This achieves stable, uniform, and continuous quantitative conveying of powder, effectively reducing the probability of defects in subsequent processing positions and effectively ensuring the powder conveying effect and processing quality.

[0077] Furthermore, throughout the powder feeding process, the brushless DC motor 501 is used to make the speed of the powder feeding disc 406 adjustable, and the air flow rate delivered to the metal barrel 303 is controlled through the air inlet pipe 301 of the powder storage tank. Therefore, when conveying powders of different materials, the speed of the powder feeding disc 406 and the air flow rate delivered to the metal barrel 303 are adjusted to effectively ensure the accuracy of powder output repeatability. The power motor 201, stirring rack 207 and other components can also complete the mixing operation of powders of different materials, effectively ensuring the powder feeding effect and processing quality. In addition, the powder scraper 407 and the powder suction block 405 are both made of polytetrafluoroethylene, which has a low coefficient of friction and has a lubricating effect, thus facilitating the relative sliding friction between the powder scraper 407, the powder suction block 405 and the powder feeding disc 406. The powder feeding disc 406 is made of stainless steel, which increases its wear resistance in contact with the powder.

[0078] After installation, the first-stage floating T-shaped transition shaft 508 and the second-stage floating stepped shaft 507 form a floating structure, and the compression spring 505 will apply thrust to the first-stage floating T-shaped transition shaft 508 and the second-stage floating stepped shaft 507 in sequence, which can compensate for the gap between the rotating powder feeding disk 406, the powder suction block 405 and the powder scraping block 407 in real time, thereby assisting the powder feeding disk 406 and the top plate 402 of the powder feeding disk cavity to effectively clamp the powder suction block 405 and the powder scraping block 407, thereby ensuring the airtightness of the powder conveying channel formed by the first groove 4051, the through groove 4071 and the through hole 4054 in the powder suction block 405 and the powder scraping block 407;

[0079] When switching powder materials or emptying the metal barrel 303, the first plug on the powder discharge pipe 307 can be removed, and then gas can be supplied into the metal barrel 303 through the air inlet pipe 301 of the powder storage barrel, so that the powder remaining in the metal barrel 303 can be discharged along the funnel-shaped barrel neck 304 and the powder discharge pipe 307, thereby discharging the powder remaining in the metal barrel 303.

[0080] After the powder is discharged from the metal barrel 303, gas continues to be introduced into the metal barrel 303, thereby causing the residual powder in components such as the connecting cylinder 305 to enter the powder feeding disc cavity 503. At the same time, gas is supplied into the powder feeding disc cavity 503 through the air inlet pipe 4022, causing the powder to fall into the annular discharge trough. Then, the plug is opened, allowing the powder in the annular discharge trough to be discharged through the bottom powder discharge port 408. This effectively removes the residual powder, effectively reducing the probability of contamination of the powder added later due to the residual powder, and effectively ensuring the powder feeding effect and processing quality.

[0081] Example 2: Figure 15 As shown, the powder breaking rod 409, which extends into the annular groove 4061 at its lower end, is installed on the lower end of the top plate 402 of the powder feeding disc cavity. The powder breaking rod 409 is located in front of the powder suction block 405 and in front of the powder scraping block 407. The powder breaking rod 409 breaks the powder moving in the annular groove 4061.

[0082] During the continuous entry of powder into the annular groove 4061, the powder feeding disc 406 can be rotated using a brushless DC power supply and a second reducer 502, thereby conveying the powder from the scraper block 407 to the suction block 405. At this time, the powder breaking rod 409 rotates relative to the powder feeding disc 406, causing the powder in the annular groove 4061 to pass through the powder breaking rod 409 during rotation. The powder breaking rod 409 then breaks up the powder in the annular groove 4061, and the broken powder continues to be conveyed towards the suction block 405. This process effectively reduces the probability of powder agglomeration in the annular groove 4061 caused by air pressure, thus ensuring the powder feeding effect and processing quality.

[0083] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A powder feeder, characterized in that, include: Control cabinet (1); Two powder tray drive assemblies (5) are provided. The two powder tray drive assemblies (5) are symmetrically installed on the upper end of the control cabinet (1). The powder feeding tray (406) is movably installed in both powder tray drive assemblies (5). Two powder feeding tray assemblies (4) are provided. The two powder feeding tray assemblies (4) are respectively installed on the upper end of two powder tray transmission assemblies (5). The lower end of the powder feeding tray assembly (4) and the upper end of the powder feeding tray (406) are fitted with a powder scraper (407) and a powder suction block (405). The powder scraper (407) and the powder suction block (405) are both connected to the corresponding powder feeding tray assembly (4), and the powder suction block (405) is located to the right of the powder scraper (407). Two powder storage tank assemblies (3) are provided. The two powder storage tank assemblies (3) are respectively connected and installed on the upper end of two powder feeding tray assemblies (4). The upper annular ends of the two powder storage tank assemblies (3) are connected to the powder storage tank air inlet pipe (301). The two powder storage tank assemblies (3) are each equipped with a stirring assembly (2).

2. The powder feeder according to claim 1, characterized in that: The powder storage tank assembly (3) includes a metal tank body (303), an outer heating plate (302) is fitted on the annular end of the metal tank body (303), a tank top plate (306) is installed on the upper end of the metal tank body (303), and the tank top plate (306) is located on the upper end of the outer heating plate (302). The tank top plate (306) has an annular structure, and a powder storage tank air inlet pipe (301) is provided on the annular end of the tank top plate (306). The powder storage tank air inlet pipe (301) is connected to the metal tank body (303) through the tank top plate (306). The lower end of the metal barrel body (303) is connected to a funnel-shaped barrel neck (304), the diameter of which gradually decreases from top to bottom. The lower end of the funnel-shaped barrel neck (304) is connected to a connecting cylinder (305), and the lower annular end of the funnel-shaped barrel neck (304) is connected to a powder discharge pipe (307), and the open end of the powder discharge pipe (307) is fitted with a first plug plunger.

3. The powder feeder according to claim 2, characterized in that: The stirring assembly (2) includes a powder storage tank adapter plate (204), which is installed on the top plate (306) of the tank body. A connecting block (203) is provided in the middle of the upper end of the powder storage tank adapter plate (204). A first reducer (202) is installed on the upper end of the connecting block (203). A power motor (201) is provided on the upper end of the first reducer (202), and the output shaft of the power motor (201) is connected to the input shaft of the first reducer (202). The upper end of the powder storage tank adapter plate (204) is recessed downward to form a feeding port, and the feeding port passes through the powder storage tank adapter plate (204). A lid knob (308) is installed on the feeding port, and the lid knob (308) is located outside the connecting block (203). The upper end of the powder storage tank adapter plate (204) is rotatably connected to the intermediate flange sleeve (209), and the intermediate flange sleeve (209) is located inside the connecting block (203). The annular end of the intermediate flange sleeve (209) is sealed to the connecting block (203) through the first sealing element (210). The lower end of the intermediate flange sleeve (209) extends to the lower side of the powder storage tank adapter plate (204). The output shaft of the first reducer (202) passes through the connecting block (203) and is connected to the intermediate flange sleeve (209). Next, the lower end of the transfer flange sleeve (209) is provided with a stirring rack shaft (205) through a coupling (208), and the lower end of the stirring rack shaft (205) passes through the top plate (306) of the barrel and extends into the metal barrel (303). The lower end of the stirring rack shaft (205) is equipped with a drive shaft (206), and multiple stirring racks (207) are equidistantly arranged at the annular end of the drive shaft (206). The stirring racks (207) and the drive shaft (206) are all located inside the metal barrel (303).

4. The powder feeder according to claim 2, characterized in that: The powder feeding tray assembly (4) includes a powder feeding tray cavity top plate (402). The upper end of the powder feeding tray cavity top plate (402) is recessed downward to form a first mounting hole (4023) and a second mounting hole (4024). Both the first mounting hole (4023) and the second mounting hole (4024) penetrate through the powder feeding tray cavity top plate (402). The first mounting hole (4023) is located to the left of the second mounting hole (4024). The lower end of the powder feeding tray cavity top plate (402) is in contact with the upper end of the powder scraper block (407) and the upper end of the powder suction block (405). The powder feeding tray cavity top plate (402) is provided with a powder outlet transition plate (403) at the upper end, and the lower end of the powder outlet transition plate (403) passes through the first mounting hole (4023). A powder feeding pipe (404) is provided in the middle of the upper end of the powder outlet transition plate (403), and the lower end of the powder feeding pipe (404) extends to the lower end of the powder outlet transition plate (403). A second plug plunger is installed at the upper end of the powder feeding pipe (404). A powder storage bucket guide block (401) is installed at the upper end of the powder feeding tray cavity top plate (402), and the lower end of the powder storage bucket guide block (401) passes through the second mounting hole (4024). The powder storage bucket guide block (401) has a hollow structure, and the powder storage bucket guide block (401) is connected to the lower end of the connecting cylinder (305).

5. The powder feeder according to claim 4, characterized in that: The powder feeding tray (406) has a downward-facing concave annular groove (4061) on its upper end. A first guide strip (4053) is installed on the lower end face of the powder suction block (405), and the first guide strip (4053) is located in the annular groove (4061). A V-shaped groove (4052) is opened at the front end of the powder suction block (405), and the V-shaped groove (4052) is arranged to be wider at the front and narrower at the back. The upper end of the powder suction block (405) has a downward-facing concave first groove (4051), and the bottom of the first groove (4051) is... The end face is recessed downward to form a through hole (4054), and the lower end face of the first guide bar (4053) is recessed upward to form a first waist groove (4055). The upper end of the first waist groove (4055) is connected to the lower end of the through hole (4054). The opening of the first waist groove (4055) is connected to the V-shaped groove (4052). The lower end of the powder outlet transition plate (403) extends into the first groove (4051), and the powder outlet transition plate (403) is sealed to the first groove (4051). The lower end of the scraper block (407) is equipped with a second guide strip (4073), and the second guide strip (4073) is located in the annular groove (4061). The upper end of the scraper block (407) is recessed downward to form a second groove (4072). The bottom end of the second groove (4072) is recessed downward to form a through groove (4071). The lower end of the second guide strip (4073) is recessed upward to form a second waist groove (4074). The upper end of the second waist groove (4074) is connected to the lower end of the through groove (4071). The rear end of the second waist groove (4074) extends to the rear end of the second guide strip (4073). The lower end of the powder storage bucket guide block (401) extends into the second groove (4072), and the powder storage bucket guide block (401) is sealed to the second groove (4072).

6. The powder feeder according to claim 5, characterized in that: The powder tray transmission assembly (5) includes a powder feeding tray cavity (503), which is located at the upper end of the control cabinet (1), and the lower end of the powder feeding tray cavity (503) extends into the control cabinet (1). A powder feeding tray cavity top plate (402) is installed at the upper end of the powder feeding tray cavity (503). The powder feeding tray (406), the powder scraper (407), and the powder suction block (405) are all located inside the powder feeding tray cavity (503). A first powder feeding tray (406), a powder scraper (407), and a powder suction block (405) are installed at the lower end of the powder feeding tray cavity (503). Two reducers (502) are provided with a brushless DC motor (501) at the lower end of the second reducer (502), and the output shaft of the brushless DC motor (501) is connected to the input shaft of the second reducer (502). The output shaft of the second reducer (502) is connected to the first-stage floating T-type transition shaft (508) through an axial keyway. A compression spring (505) is provided between the upper end of the output shaft of the second reducer (502) and the top end of the inner part of the first-stage floating T-type transition shaft (508). The outer end of the primary floating T-shaped transition shaft (508) is fitted with a secondary floating stepped shaft (507). The upper end of the secondary floating stepped shaft (507) is connected to the lower end of the powder feeding tray (406). An annular fixing member (506) is installed in the middle of the bottom of the powder feeding tray cavity (503), and the annular fixing member (506) is located on the lower side of the powder feeding tray (406). The annular fixing member (506) is fitted on the annular end of the secondary floating stepped shaft (507). The upper and lower ends of the annular fixing member (506) are sealed to the annular end of the secondary floating stepped shaft (507) through the second sealing member (504). The upper end of the compression spring (505) passes through the primary floating T-shaped transition shaft (508) and is connected to the top end of the secondary floating stepped shaft (507).

7. The powder feeder according to claim 6, characterized in that: The bottom of the powder feeding disc cavity (503) is recessed downward to form an annular discharge groove, which is located outside the annular fixing member (506). The cross-section of the annular discharge groove is V-shaped. The upper end of the top plate (402) of the powder feeding disc cavity is equipped with a powder feeding disc cavity air inlet pipe (4022), which penetrates the top plate (402) of the powder feeding disc cavity. The lower end of the powder feeding disc cavity (503) is recessed upward to form a bottom powder discharge port (408), which is located outside the second reducer (502). The upper end of the bottom powder discharge port (408) is connected to the lower end of the annular discharge groove, and a plug is installed inside the bottom powder discharge port (408).

8. The powder feeder according to claim 7, characterized in that: The top plate (402) of the powder feeding tray cavity has a downward recessed upper end to form two observation ports (4021), and the observation ports (4021) penetrate through the top plate (402) of the powder feeding tray cavity. The two observation ports (4021) are arranged symmetrically, and a transparent plate is provided in each of the two observation ports (4021).

9. The powder feeder according to claim 5, characterized in that: A powder-breaking rod (409) is installed at the lower end of the top plate (402) of the powder feeding tray cavity, and the lower end of the powder-breaking rod (409) extends into the annular groove (4061). The powder-breaking rod (409) is located in front of the powder suction block (405) and in front of the powder scraping block (407).

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