CN213652650U

CN213652650U - Laser cladding device

Info

Publication number: CN213652650U
Application number: CN202022769594.6U
Authority: CN
Inventors: 邹斌华
Original assignee: Ningbo Leisu Laser Industry Co ltd
Current assignee: Ningbo Leisu Laser Industry Co ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-07-09
Anticipated expiration: 2030-11-25

Abstract

The utility model discloses a laser cladding device, which comprises a handheld laser spray gun and a powder feeder, wherein the spray gun comprises a gun body and a nozzle, a laser channel is arranged in the gun body, a collimating lens, a focusing lens and a protective lens are sequentially arranged in the laser channel, the outlet end of the gun body is provided with the nozzle, a powder joint is arranged on the nozzle and is connected with the powder feeder, and a cooling channel is arranged in the wall of the gun body corresponding to the position of at least one of the collimating lens, the focusing lens and the protective lens; powder feeder is including the storage powder section of thick bamboo that is used for storing the powder, the powder dish, the apron and be used for driving the rotatory drive assembly of powder dish, this laser cladding device improves the structure, improve the heat dissipation in order to prolong the live time, and improve powder feeder structure, through the unloading scraper blade, the ejection of compact scraper blade carries out one-way blocking to the powder that falls into, make the powder along fixed direction and under the drive of air current, transport and transmit between the two, can effectively avoid the powder gathering, and guarantee the powder of great weight and export fast, make and send the powder even.

Description

Laser cladding device

Technical Field

The utility model relates to the field of welding technology, concretely relates to laser cladding device.

Background

The laser cladding is a new surface modification technology, and is a technological method for obviously improving the wear-resisting, corrosion-resisting, heat-resisting, oxidation-resisting and electric properties of the surface of a base layer by placing a selected coating material on the surface of a cladded base body in different material adding modes, melting the selected coating material and a thin layer on the surface of the base body simultaneously through laser irradiation, and forming a surface coating with extremely low dilution degree after rapid solidification, wherein the surface coating is metallurgically combined with the base body. The key point of the process method is synchronous feeding, namely, laser and a melted material are synchronously transmitted to a processing and forming position, and the metal material is continuously, accurately and uniformly thrown into a focusing light spot which scans on a processing surface according to a preset track, so that accurate coupling of the laser and the melted material is realized.

The existing laser cladding powder feeder is easy to have the phenomena of uneven powder feeding or powder blockage when the rotating speed of a powder disc is too high, and has the defect of short service life caused by poor heat dissipation of a gun body, so that improvement is needed.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical defect, the utility model provides a following technical scheme:

a laser cladding device comprises a handheld laser spray gun and a powder feeder, wherein the spray gun comprises a gun body and a nozzle, a laser channel is arranged in the gun body, a collimating lens, a focusing lens and a protective lens are sequentially arranged in the laser channel, the nozzle is arranged at the outlet end of the gun body, a powder joint is arranged on the nozzle and is connected with the powder feeder, and a cooling channel is arranged in the wall of the gun body corresponding to the position of at least one of the collimating lens, the focusing lens and the protective lens;

the powder feeder comprises a powder storage cylinder for storing powder, a powder disc, a cover plate and a driving assembly for driving the powder disc to rotate, wherein the powder disc is installed on an output shaft of the driving assembly, an annular powder feeding groove is formed in the upper surface of the powder disc, the cover plate is installed at the top of the powder disc, the powder storage cylinder is installed on the cover plate, the powder disc and the cover plate are matched and sealed to form a powder feeding cavity, an air supply opening, a powder inlet and a powder outlet are formed in the cover plate and are respectively communicated with the powder feeding cavity, the air supply opening is communicated with an air supply system through an air supply pipe, the powder inlet is communicated with the powder storage cylinder, the powder outlet is communicated with a powder joint through a powder supply pipe, a discharging scraper and a discharging scraper which can slide relative to the powder disc are symmetrically installed on the annular powder feeding groove, the discharging scraper is communicated with the powder inlet and the powder outlet, the discharging scraper is communicated with the powder outlet through the annular powder supply groove, and the powder in the powder storage cylinder sequentially passes, The blanking scraper blade falls into the annular powder conveying groove, the powder is transferred to the discharging scraper blade along with the rotating powder disc and is blocked by the discharging scraper blade, the powder does not rotate along with the powder disc, and the powder is led out from the powder outlet through the powder conveying pipe along with the airflow conveyed into the powder conveying cavity.

This laser cladding device improves the structure, installs cooling body on the spray gun, improves the heat dissipation in order to prolong the live time to improve powder feeder structure, carry out one-way the blockking through unloading scraper blade, ejection of compact scraper blade to the powder that falls into, make the powder along fixed direction and under the drive of air current, transport between the two and pass on, can effectively avoid the powder gathering, and guarantee the powder of great weight and export fast, make and send the powder even.

Further, the bottom one end of unloading scraper blade is equipped with and send the cooperation of powder groove to inlay the first baffle of establishing with the annular, and the bottom other end of unloading scraper blade is equipped with first uncovered, and the bottom one end of ejection of compact scraper blade is equipped with the second uncovered, and the bottom other end of ejection of compact scraper blade is equipped with and send the cooperation of powder groove to inlay the second baffle of establishing with the annular, and the second is uncovered to be close to first uncovered setting, and the direction of first baffle, first uncovered setting is unanimous with the direction of rotation of powder dish.

Further, be equipped with decompression support piece in the powder storage section of thick bamboo, decompression support piece includes support ring and support column, and the support ring inlays to establish and fixes in the powder storage section of thick bamboo, is equipped with the back taper funnel on the support ring, and on the back taper funnel was worn to locate by the lower extreme of support column, the upper end and the powder storage section of thick bamboo of support column were fixed.

Further, still include the control box, be equipped with the PLC touch-sensitive screen on the control box and be used for detecting gas flow's among the blast pipe gas flowmeter, the powder dish rotates to be installed on the control box, and drive assembly installs in the control box.

Further, still be equipped with the puddler in the powder storage cylinder, install the agitator motor who rotates with the puddler and be connected on the powder storage cylinder.

Further, the drive assembly is a servo motor, a speed reducer is installed on an output shaft of the servo motor and connected with a coupler, the powder disc is connected with the coupler through a rotating shaft, a scraper seat is installed at the upper end of the rotating shaft through a bearing, and the blanking scraper and the discharging scraper are installed on the scraper seat respectively.

Furthermore, a powder outlet cavity channel is arranged in the peripheral side wall of the outlet end of the nozzle, and a powder joint is arranged at the inlet of the powder outlet cavity channel, so that the butt joint is convenient.

Furthermore, a cooling channel is arranged in the wall of the inlet end part of the nozzle, so that the heat dissipation is improved.

Further, a protective gas joint is arranged on the gun body and communicated with the laser channel so as to protect the cladding surface and improve the quality.

Further, the rifle body is the two-section type, and first section is the angle with the second section and is connected, and sets up collimating lens, refraction lens in the first section, sets up focusing lens, protection lens in the second section, satisfies different demands, conveniently grips.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the laser cladding device improves the structure, improves the heat dissipation, and ensures the rapid output of powder with larger weight, so that the powder feeding is uniform.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a block diagram of the present invention;

FIG. 2 is an enlarged view of part A;

FIG. 3 is a perspective view of the powder pan;

FIG. 4 is a perspective view of the cover plate;

wherein the reference numerals are:

1. a powder storage cylinder; 2. a powder tray; 2a, an annular powder feeding groove; 3. a cover plate; 3a, an air supply port; 3b, a powder inlet; 3c, a powder outlet; 4. an air supply pipe; 5. a powder feeding pipe; 6. blanking scraper plates; 6a, a first baffle; 7. a discharging scraper plate; 7a, a second baffle plate; 8. a support ring; 9. a support pillar; 10. an inverted cone-shaped funnel; 11. a control box; 12. a PLC touch screen; 13. a gas flow meter; 14. a stirring rod; 15. a stirring motor; 16. a squeegee base; 100. a gun body; 101. a first stage; 102. a second stage; 103. powder joint; 104. a collimating lens; 105. a refractive lens; 106. a focusing lens; 107. protecting the lens; 108. a shielding gas joint; 109. a nozzle; 110. a cooling channel; 111. a water inlet joint; 112. a water outlet joint; 113. and (4) discharging the powder cavity channel.

Detailed Description

The invention will be further explained with reference to the drawings and the specific embodiments.

Example 1

Referring to fig. 1, 2, 3 and 4, the laser cladding apparatus includes a handheld laser spray gun and a powder feeder, specifically, as shown in fig. 1, the powder feeder and the spray gun are shown, and a laser generating device and a shielding gas storage device are omitted.

As shown in fig. 2, in this embodiment, the spray gun includes a gun body 100 and a nozzle 109, for convenient holding, the gun body adopts a two-stage structure, the first stage 101 is fixed to the second stage 102 in an angular connection, such as 60 °, a laser channel is opened in the gun body in a penetrating manner from the head end to the tail end, a collimating lens 104 and a refracting lens 105 are sequentially installed in the laser channel of the first stage, a focusing lens 106 and a protective lens 107 are sequentially installed in the second stage, the nozzle is installed at the outlet end of the gun body, a powder cavity 113 is opened in the peripheral side wall of the outlet end of the nozzle, a powder cavity is opened in a surrounding manner with the center of the outlet of the nozzle as the center of the circle, a powder connector 103 is installed at the inlet of each powder cavity, in this embodiment, a cooling channel 110 is spirally extended in the wall of the gun body where the refracting lens and the focusing lens are located, for example, a water inlet connector 112 and a water outlet connector, furthermore, cooling channels may be provided in the nozzle inlet end wall.

In another embodiment, a shielding gas joint 108 may be installed on the gun body and communicated with the laser channel to shield the cladding surface, for example, a shielding gas joint is installed on the outer wall of the gun body behind the nozzle and connected to an external gas storage device, for example, argon gas is used for shielding.

In the embodiment, the powder feeder comprises a powder storage cylinder 1 for storing powder, a powder disc 2, a cover plate 3 and a driving component for driving the powder disc 2 to rotate, the powder disc 2 is installed on an output shaft of the driving component, an annular powder feeding groove 2a is arranged on the upper surface of the powder disc 2, the cover plate 3 is installed on the top of the powder disc 2, the powder storage cylinder 1 is installed on the cover plate 3, a powder feeding cavity is formed by matching and sealing the powder disc 2 and the cover plate 3, an air feeding port 3a, a powder feeding port 3b and a powder discharging port 3c which are respectively communicated with the powder feeding cavity are arranged on the cover plate 3, the air feeding port 3a is communicated with an air feeding system through an air feeding pipe 4, the powder feeding port 3b is communicated with the powder storage cylinder 1, the powder discharging port 3c is communicated with a laser cladding head through a powder feeding pipe 5, a discharging scraper 6 and a discharging scraper 7 which can slide relative to the powder disc 2 are symmetrically arranged on the annular powder feeding groove 2a, the discharging scraper 6 is communicated with the powder feeding port 3, the blanking scraper 6 is communicated with the discharging scraper 7 through the annular powder feeding groove 2a, powder in the powder storage cylinder 1 sequentially falls into the annular powder feeding groove 2a through the powder inlet 3b and the blanking scraper 6 under the action of gravity, the powder is transferred to the discharging scraper 7 along with the rotating powder disc 2 and is blocked by the discharging scraper 7, the powder does not rotate along with the powder disc 2, and the powder is led out from the powder outlet 3c through the powder feeding pipe 4 along with air flow sent into the powder feeding cavity.

Specifically, the powder storage cylinder 1 is a transparent cylinder. Store up and be equipped with decompression support piece in the powder section of thick bamboo 1, decompression support piece includes support ring 8 and support column 9, and support ring 8 inlays to establish and fixes in storing up powder section of thick bamboo 1, is equipped with back taper funnel 10 on the support ring 8, and on back taper funnel 10 was worn to locate by the lower extreme of support column 9, the upper end and the powder section of thick bamboo 1 of storing up of support column 9 were fixed. Avoid a large amount of powder to gather in the discharge gate of storing up powder section of thick bamboo 1 fast, avoid blockking up the discharge gate, and can reach the powder loading volume 20 kilograms.

The powder storage cylinder 1 is also internally provided with a stirring rod 14, and the powder storage cylinder 1 is provided with a stirring motor 15 which is rotatably connected with the stirring rod 14. Prevent the powder from gathering and realize smooth powder feeding.

Specifically, the stirring rod 14 is located at the upper part of the inverted cone funnel 10 or is arranged on the inverted cone funnel 10 in a penetrating way.

Preferably, the bottom one end of unloading scraper blade 6 is equipped with and send the cooperation of powder groove 2a with the annular to inlay first baffle 6a of establishing, the bottom other end of unloading scraper blade 6 is equipped with first uncovered, the bottom one end of ejection of compact scraper blade 7 is equipped with the second uncovered, the bottom other end of ejection of compact scraper blade 7 is equipped with and send the cooperation of powder groove 2a with the annular to inlay second baffle 7a of establishing, the second is uncovered to be close to first uncovered setting, first baffle 6a, the direction of first uncovered setting is unanimous with the direction of rotation of powder dish 2.

Specifically, the drive assembly is servo motor, installs the speed reducer on servo motor's the output shaft, and the speed reducer is connected the shaft coupling, and powder dish 2 passes through the pivot with the shaft coupling to be connected, and the upper end of pivot is installed through the bearing and is scraped board seat 16, and unloading scraper blade 6, ejection of compact scraper blade 7 are installed respectively on scraping board seat 16.

Preferably, the powder disc device further comprises a control box 11, a PLC touch screen 12 and a gas flowmeter 13 are arranged on the control box 11, the powder disc 2 is rotatably installed on the control box 11, and the driving assembly is installed in the control box 11.

The PLC touch screen 12 is used for controlling the rotating speed of the stirring motor 15 and the servo motor so as to control the powder feeding amount and the gas flow, and the related parameters can be manually set so as to realize uniform powder feeding; a power supply for controlling the stirring motor 15 and the servo motor is arranged in the control box 11, and a switch for controlling the on-off of the power supply and an electromagnetic valve for controlling the powder feeding and air feeding are arranged on the control box 11.

The powder feeding process comprises the following steps: the powder falls into the blanking scraper 6 on the powder disc 2 from the powder storage cylinder 1 under the action of self gravity and the stirring rod 14, the powder is transferred into the discharging scraper 7 under the action of rotation of the powder disc 2 and the blocking of the first baffle 6a, and the powder is conveyed into the powder joint from the powder conveying pipe 5 along with the loaded airflow under the blocking of the second baffle 7a and is conveyed to the laser spot from the powder outlet cavity channel.

Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a laser cladding device, includes handheld laser spray gun and powder feeder, and the spray gun includes the rifle body, nozzle, sets up laser channel in the rifle body, sets gradually collimating lens, focus lens, protection lens in the laser channel, and the exit end of the rifle body sets up the nozzle, sets up the powder joint on the nozzle, and the powder connects and send the powder feeder to be connected its characterized in that: a cooling channel is arranged in the gun body wall corresponding to the position of at least one of the collimating lens, the focusing lens and the protective lens;

2. The apparatus of claim 1, wherein: the bottom one end of unloading scraper blade is equipped with and send the cooperation of powder groove to inlay the first baffle of establishing with the annular, and the bottom other end of unloading scraper blade is equipped with first uncovered, and the bottom one end of ejection of compact scraper blade is equipped with the second uncovered, and the bottom other end of ejection of compact scraper blade is equipped with and send the cooperation of powder groove to inlay the second baffle of establishing with the annular, and the second is uncovered to be close to first uncovered setting, and the direction of first baffle, first uncovered setting is unanimous with the direction of rotation of powder dish.

3. The apparatus of claim 1, wherein: be equipped with decompression support piece in the powder storage cylinder, decompression support piece includes support ring and support column, and the support ring inlays to establish and fixes in the powder storage cylinder, is equipped with the back taper funnel on the support ring, and on the back taper funnel was worn to locate by the lower extreme of support column, the upper end and the powder storage cylinder of support column were fixed.

4. The apparatus of claim 1, wherein: the powder disc is rotatably installed on the control box, and the driving assembly is installed in the control box.

5. The apparatus of claim 1, wherein: still be equipped with the puddler in storing up the powder section of thick bamboo, store up and install the agitator motor who rotates with the puddler and be connected on the powder section of thick bamboo.

6. The apparatus of claim 1, wherein: the drive assembly is servo motor, installs the speed reducer on servo motor's the output shaft, and the speed reducer is connected the shaft coupling, and the powder dish is connected through the pivot with the shaft coupling, and the upper end of pivot is installed the scraper seat through the bearing, and unloading scraper blade, ejection of compact scraper blade are installed respectively on the scraper seat.

7. The apparatus of any one of claims 1-6, wherein: the side wall of the circumference of the outlet end of the nozzle is internally provided with a powder outlet cavity channel, and the inlet of the powder outlet cavity channel is provided with a powder joint.

8. The apparatus of claim 7, wherein: a cooling channel is arranged in the wall of the inlet end part of the nozzle.

9. The apparatus of any one of claims 1-6, wherein: the gun body is provided with a protective gas joint which is communicated with the laser channel.

10. The apparatus of any one of claims 1-6, wherein: the rifle body is the two-section type, and the first section is the angle with the second section and is connected, and sets up collimating lens, refraction lens in the first section, sets up focusing lens, protection lens in the second section.