Automatic cleaning device for electron beam cladding powder feeding nozzle

Abstract

The utility model discloses an automatic cleaning device for an electron beam cladding powder feeding nozzle, which comprises a powder feeding head used for conveying metal powder to an irradiation track of an electron beam, and the conveying track of the metal powder is obliquely arranged relative to the irradiation track of the electron beam; the powder cleaning head is arranged on a powder feeding nozzle of the powder feeding head in a sleeving and rotating mode, and the powder cleaning head rotates relative to the powder feeding head through a driving assembly; the connecting seat is provided with a plurality of mounting positions for detachably mounting the powder feeding head, and the mounting positions are arranged around the central axis of the connecting seat at equal angles. According to the powder feeding nozzle, the risk that the powder feeding nozzle is blocked due to the fact that metal powder adheres to the powder feeding nozzle can be reduced, stability of powder feeding is guaranteed, and therefore the electron beam cladding machining effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of cleaning equipment, in particular to an automatic cleaning device for an electron beam cladding powder feeding nozzle. Background Art

[0002] Electron beam cladding technology refers to the use of high-speed electron beams to partially melt the surface of the workpiece, and in the process of instant cooling and solidification, the molten metal powder or wire is sprayed onto the surface of the workpiece to form a special coating. This coating has the characteristics of high strength, high hardness and abrasion resistance, which can effectively improve the service life and performance of the workpiece.

[0003] In the electron beam cladding process, the feeding method of metal powder can be divided into side-axis powder feeding, coaxial circumferential powder feeding and center powder feeding. Among them, side-axis powder feeding is to separate the powder conveying device and the electron beam, and generally use the outer powder feeding tube. During the long and uninterrupted electron beam cladding process, the metal powder gradually sticks to the powder feeding nozzle due to reasons such as the metal powder being ejected too high, the powder feeding nozzle working distance being too low, the powder feeding nozzle surface being too rough or contaminated, and even causing the powder feeding nozzle to be blocked, thereby hindering the output of the metal powder, causing the mass of powder entering the molten pool on the workpiece surface to be reduced, and affecting the dilution rate and thickness of the electron beam cladding layer. Utility Model Content

[0004] The utility model aims to provide an automatic cleaning device for an electron beam cladding powder feeding nozzle, which can reduce the risk of clogging of the powder feeding nozzle due to adhesion of metal powder on the powder feeding nozzle, ensure the stability of powder feeding, and thus ensure the effect of electron beam cladding processing.

[0005] The technical solution adopted by the utility model to solve the above problems is:

[0006] An automatic cleaning device for an electron beam cladding powder feeding nozzle comprises:

[0007] A powder feeding head, which is used to feed metal powder to the irradiation track of the electron beam, wherein the feeding track of the metal powder is inclined relative to the irradiation track of the electron beam;

[0008] The powder cleaning head is sleeved and rotatably arranged on the powder feeding nozzle of the powder feeding head, and the powder cleaning head is rotated relative to the powder feeding head by a driving component;

[0009] The connecting seat is provided with a plurality of mounting positions for detachably mounting the powder supply head, and the mounting positions are arranged at equal angles around the central axis of the connecting seat.

[0010] As a further improvement of the above technical solution, the powder feeding head also includes a powder feeding pipe, which is a hollow structure with an opening at the bottom end. A powder feeding channel is provided in the cavity of the powder feeding pipe, and a powder feeding pipe joint is provided on the top of the powder feeding pipe. The powder feeding nozzle is installed on the bottom end of the powder feeding pipe through a sealing joint. A powder outlet channel is provided on the powder feeding nozzle along its axial direction, and the powder outlet channel, the powder feeding channel and the powder feeding pipe joint are connected in sequence.

[0011] As a further improvement of the above technical solution, the driving assembly includes a driving seat, which is sleeved and detachably mounted on the powder feeding head, a motor is mounted on the driving seat, a coupling is provided on the output shaft of the motor, the powder cleaning head is rotatably connected to the driving seat through a sliding bearing, and a transmission connection is achieved between the coupling and the sliding bearing through a rubber ring, which is wound around the coupling and the sliding bearing.

[0012] As a further improvement of the above technical solution, a plurality of through holes are provided on the side surface of the powder cleaning head.

[0013] As a further improvement of the above technical solution, the powder delivery pipe is provided with a liquid inlet channel and a liquid outlet channel, both of which are connected to the cavity of the powder delivery pipe, and water pipe joints are provided at two opposite positions on the side surface of the top end of the powder delivery pipe, and the two water pipe joints are respectively connected to the liquid inlet channel and the liquid outlet channel.

[0014] As a further improvement of the above technical solution, the coupling is exposed on the drive seat, a dust baffle for shielding the coupling is provided at the bottom end of the drive seat, and a sealing ring is provided between the sliding bearing and the drive seat.

[0015] As a further improvement of the above technical solution, the connecting seat includes a first connecting plate and a second connecting plate, the diameter of the first connecting plate is larger than the diameter of the second connecting plate and the two are coaxially arranged, the first connecting plate and the second connecting plate are both annular and several relative positions on the two are provided with a first fastening seat to form an installation position, and a fastener compatible with the first fastening seat is provided on the powder feeding head.

[0016] As a further improvement of the above technical solution, a steam baffle is provided between the first connecting disk and the second connecting disk. The steam baffle and the second connecting disk are coaxially arranged and connected by a plurality of support columns, and the support columns are arranged at equal angles around the central axis of the second connecting disk.

[0017] As a further improvement of the above technical solution, two opposite positions on the first connecting plate are provided with second fastening seats for installing the electron gun.

[0018] Compared with the prior art, the utility model has the following advantages and effects:

[0019] (1) The utility model realizes that the powder cleaning head can rotate relative to the powder feeding head through the structural setting between the powder cleaning head and the powder feeding head and the driving effect of the driving component on the powder cleaning head, so that the metal powder adhering to the powder feeding nozzle can be knocked off by the powder cleaning head or blown off by the wind force generated by the rotation of the powder cleaning head, thereby reducing the risk of clogging of the powder feeding nozzle due to the adhesion of metal powder on the powder feeding nozzle, ensuring the stability of powder feeding, and thus ensuring the effect of electron beam cladding processing.

[0020] (2) The utility model provides a plurality of mounting positions on the connecting seat so that a plurality of powder feeding heads with powder cleaning heads can be installed on the connecting seat, thereby satisfying the operator's need to increase the amount of powder to be fed for the same metal powder or to feed different metal powders simultaneously, thereby improving the flexibility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The utility model is a structural schematic diagram of an automatic cleaning device for an electron beam cladding powder feeding nozzle.

[0022] Figure 2 The utility model is a structural schematic diagram of the side surface of an automatic cleaning device for an electron beam cladding powder feeding nozzle.

[0023] Figure 3 yes Figure 2 The structural schematic diagram of the powder cleaning head and the powder feeding head is shown in.

[0024] Figure 4 yes Figure 3 A schematic cross-sectional view of the structure of the drive assembly shown in FIG.

[0025] Figure 5 yes Figure 3 The schematic cross-sectional view of the structure of the powder feeding head is shown in FIG.

[0026] Figure 6 yes Figure 2 The structural schematic diagram of the connecting socket is shown in FIG.

[0027] Among them, the powder feeding head 1, the powder feeding nozzle 11, the powder feeding pipe 12, the powder feeding channel 13, the powder feeding pipe joint 14, the sealing joint 15, the powder outlet channel 16, the liquid inlet channel 17, the liquid outlet channel 18, the water pipe joint 19, the powder cleaning head 2, the through hole 21, the connecting seat 3, the first connecting plate 31, the second connecting plate 32, the first fastening seat 33, the fastener 34, the second fastening seat 35, the driving component 4, the driving seat 41, the motor 42, the coupling 43, the sliding bearing 44, the rubber ring 45, the mounting position 5, the dust baffle 61, the sealing ring 62, the steam baffle 71, and the support column 72. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and through examples. The following examples are provided to explain the present invention, but the present invention is not limited to the following examples.

[0029] See also Figure 1-Figure 6 The present embodiment provides an automatic cleaning device for an electron beam cladding powder feeding nozzle, comprising a powder feeding head 1, a powder cleaning head 2 and a connecting seat 3. The powder feeding head 1 is used to transport metal powder to the irradiation track of the electron beam. The transport track of the metal powder is inclined relative to the irradiation track of the electron beam. The powder cleaning head 2 is sleeved and rotatably arranged on the powder feeding nozzle 11 of the powder feeding head 1. The powder cleaning head 2 is rotated relative to the powder feeding head 1 by a driving component 4. A plurality of mounting positions 5 for detachably mounting the powder feeding head 1 are provided on the connecting seat 3, and each mounting position 5 is arranged at equal angles around the central axis of the connecting seat 3.

[0030] Before use, the user can select an appropriate number of powder feeding heads 1 to be installed on the mounting position 5 of the connecting seat 3 according to the conveying requirements of the metal powder. During the electron beam cladding process, the metal powder is obliquely conveyed to the irradiation track of the electron beam by the powder feeding head 1, and melted and falls onto the cladding workpiece under the bombardment of the electron beam. In this process, the powder cleaning head 2 is rotated relative to the powder feeding head 1 by the driving component 4, so that the metal powder that is falsely adhered to the powder feeding nozzle 11 can be knocked off by the powder cleaning head 2 or blown off by the wind force generated by the rotation of the powder cleaning head 2, thereby cleaning the metal powder that is falsely adhered to the powder feeding nozzle 11, reducing the risk of clogging of the powder feeding nozzle 11, and ensuring the smoothness of the electron beam cladding operation.

[0031] See also Figure 2 , Figure 3 A plurality of through holes 21 are provided on the side of the powder cleaning head 2, so that the metal powder cleaned from the powder feeding nozzle 11 by the powder cleaning head 2 can be discharged from the space between the powder cleaning head 2 and the powder feeding nozzle 11 through the through holes 21, thereby reducing the risk of metal powder accumulating in the space between the powder cleaning head 2 and the powder feeding nozzle 11 and affecting the rotation of the powder cleaning head 2, and also improving the visual effect of the appearance of the powder cleaning head 2.

[0032] See also Figure 3 , Figure 4The driving assembly 4 includes a driving seat 41, which is sleeved and detachably mounted on the powder feeding head 1, and a motor 42 is mounted on the driving seat 41. A coupling 43 is arranged on the output shaft of the motor 42. The powder cleaning head 2 is rotatably connected to the driving seat 41 through a sliding bearing 44. The coupling 43 and the sliding bearing 44 are connected by a rubber ring 45, and the rubber ring 45 is wound around the coupling 43 and the sliding bearing 44. When in use, the motor 42 drives the powder cleaning head 2 to rotate relative to the powder feeding nozzle 11 through the coupling 43, the rubber ring 45 and the sliding bearing 44 in sequence, so that the powder cleaning head 2 can be cleaned up by the wind force generated during the rotation or the metal powder that is virtually adhered to the powder feeding nozzle 11 that is contacted, thereby reducing the risk of blockage of the air outlet of the powder feeding nozzle 11.

[0033] See also Figure 3 The coupling 43 is exposed on the driving seat 41, and a dust baffle 61 for shielding the coupling 43 is provided at the bottom end of the driving seat 41. A sealing ring 62 is provided between the sliding bearing 44 and the driving seat 41, which reduces the risk of dust generated during electron beam cladding entering the driving seat 41 and adhering to the coupling 43, the rubber ring 45 and the sliding bearing 44, thereby affecting the driving effect of the motor 42 on the powder cleaning head 2, thereby ensuring the stability of the cleaning effect of the device.

[0034] See also Figure 3 , Figure 5 The powder delivery head 1 also includes a powder delivery tube 12, which is a hollow structure with an opening at the bottom end. A powder delivery channel 13 is provided in the cavity of the powder delivery tube 12, and a powder delivery tube joint 14 is provided on the top of the powder delivery tube 12. The powder delivery nozzle 11 is installed on the bottom end of the powder delivery tube 12 through a sealing joint 15. A powder outlet channel 16 is provided on the powder delivery nozzle 11 along its axial direction. The powder outlet channel 16, the powder delivery channel 13 and the powder delivery tube joint 14 are connected in sequence, which ensures the accuracy of metal powder transportation. The assembled structure of the powder delivery head 1 reduces the manufacturing difficulty of the powder delivery channel 13 and the powder outlet channel 16 in the powder delivery head 1, and when the powder delivery nozzle 11 is damaged, it is convenient to disassemble and replace, which ensures the utilization rate of the powder delivery tube 12.

[0035] See also Figure 5 The powder delivery tube 12 is provided with a liquid inlet channel 17 and a liquid outlet channel 18, both of which are connected to the cavity of the powder delivery tube 12. Two opposite positions on the side surface of the top of the powder delivery tube 12 are provided with water pipe joints 19, and the two water pipe joints 19 are respectively connected to the liquid inlet channel 17 and the liquid outlet channel 18. When in use, external water can enter the cavity of the powder delivery tube 12 through the liquid inlet channel 17, and then be discharged through the liquid outlet channel 18, so as to realize the circulation of water in the powder delivery tube 12, thereby achieving a cooling effect, reducing the temperature of the powder delivery tube 12 during the electron beam cladding process, and ensuring smooth powder delivery.

[0036] See also Figure 2 , Figure 6 The connecting seat 3 includes a first connecting disk 31 and a second connecting disk 32. The diameter of the first connecting disk 31 is larger than the diameter of the second connecting disk 32 and the two are coaxially arranged, which ensures the inclined arrangement of the powder feeding head 1, so that the metal powder can be obliquely transported to the irradiation track of the electron beam. The first connecting disk 31 and the second connecting disk 32 are both annular and several relative positions on the two are provided with a first fastening seat 33 to form a mounting position 5. The powder feeding head 1 is provided with a fastener 34 adapted to the first fastening seat 33, so that the fastener 34 on the powder feeding head 1 can be connected to the corresponding first fastening seat 33 by bolts, thereby realizing the detachable installation of the powder feeding head 1 on the connecting seat 3.

[0037] A steam baffle 71 is provided between the first connection disk 31 and the second connection disk 32. The steam baffle 71 and the second connection disk 32 are coaxially arranged and connected by a plurality of support columns 72, and the support columns 72 are arranged at equal angles around the central axis of the second connection disk 32. The steam baffle 71 is provided to reduce the range of the steam generated during the electron beam cladding process that drifts toward the electron gun along the electron beam irradiation trajectory, and to reduce the influence of the steam on the irradiation direction and stability of the electron beam, thereby ensuring the cladding effect of the electron beam.

[0038] See also Figure 6 Two opposite positions on the first connection plate 31 are provided with second fastening seats 35 for installing the electron gun, which facilitates the installation of the electron gun on the first connection plate 31.

[0039] The above contents described in this specification are merely examples of the present utility model. Those skilled in the art of the present utility model may make various modifications or additions to the specific embodiments described, or replace them in similar ways, as long as they do not deviate from the contents of the present utility model specification or exceed the scope defined in the claims, they shall all fall within the protection scope of the present utility model.

Claims

1. An automatic cleaning device for an electron beam cladding powder feeding nozzle, characterized in that: include: A powder feeding head, which is used to feed metal powder to the irradiation track of the electron beam, wherein the feeding track of the metal powder is inclined relative to the irradiation track of the electron beam; The powder cleaning head is sleeved and rotatably arranged on the powder feeding nozzle of the powder feeding head, and the powder cleaning head is rotated relative to the powder feeding head by a driving component; A connecting seat, on which a plurality of mounting positions for detachably mounting a powder feeding head are provided, wherein the mounting positions are arranged at equal angles around the central axis of the connecting seat; The powder delivery head further comprises a powder delivery tube, which is a hollow structure with an opening at the bottom end. A powder delivery channel is arranged in the cavity of the powder delivery tube, a powder delivery tube joint is arranged on the top end of the powder delivery tube, a powder delivery nozzle is installed on the bottom end of the powder delivery tube through a sealing joint, a powder outlet channel is arranged on the powder delivery nozzle along its axial direction, and the powder outlet channel, the powder delivery channel and the powder delivery tube joint are connected in sequence; A plurality of through holes are provided on the side of the powder cleaning head; The driving assembly includes a driving seat, which is sleeved and detachably mounted on the powder feeding head. A motor is mounted on the driving seat, and a coupling is provided on the output shaft of the motor. The powder cleaning head is rotatably connected to the driving seat through a sliding bearing. The coupling and the sliding bearing are connected in transmission through a rubber ring, which is wound around the coupling and the sliding bearing.

2. The automatic cleaning device for the electron beam cladding powder feeding nozzle according to claim 1 is characterized in that: The powder delivery pipe is provided with a liquid inlet channel and a liquid outlet channel, both of which are connected to the cavity of the powder delivery pipe. Two opposite positions on the side surface of the top of the powder delivery pipe are provided with water pipe joints, which are respectively connected to the liquid inlet channel and the liquid outlet channel.

3. The automatic cleaning device for the electron beam cladding powder feeding nozzle according to claim 1 is characterized in that: The coupling is exposed on the driving seat, a dustproof baffle for shielding the coupling is arranged at the bottom end of the driving seat, and a sealing ring is arranged between the sliding bearing and the driving seat.

4. The automatic cleaning device for the electron beam cladding powder feeding nozzle according to claim 1 is characterized in that: The connecting seat includes a first connecting plate and a second connecting plate. The diameter of the first connecting plate is larger than the diameter of the second connecting plate and the two are coaxially arranged. The first connecting plate and the second connecting plate are both annular and several relative positions on the two are provided with a first fastening seat to form an installation position. The powder feeding head is provided with a fastener that is compatible with the first fastening seat.

5. The automatic cleaning device for the electron beam cladding powder feeding nozzle according to claim 4 is characterized in that: A steam baffle is provided between the first connection disk and the second connection disk. The steam baffle and the second connection disk are coaxially arranged and connected via a plurality of support columns, and the support columns are arranged at equal angles around the central axis of the second connection disk.

6. The automatic cleaning device for the electron beam cladding powder feeding nozzle according to claim 4 is characterized in that: Two opposite positions on the first connection plate are each provided with a second fastening seat for installing the electron gun.

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