Laser cladding head adaptive to protection of inner wall of slim hole

Abstract

The laser cladding head comprises a light guide cylinder, one end of the light guide cylinder is rotationally connected with a mounting part, the center of the end, away from the light guide cylinder, of the mounting part is fixedly connected with one end of a rotating connector, and the outer wall of the side, close to the rotating connector, of the mounting part is fixedly connected with a light emitting and powder feeding connector; a plurality of connecting pipes are fixedly connected to the outer wall of the bright dipping powder feeding connector. The end, away from the rotary connector, of the installation part is fixedly sleeved with an outer gear ring, the outer gear ring is in meshed connection with a driving gear, the driving gear is fixedly connected with an output shaft of a micro servo motor, the micro servo motor is fixedly installed outside the light guide cylinder, and a supporting assembly is arranged on the outer wall of the side, close to the installation part, of the light guide cylinder. The supporting assembly is connected with an adjusting screw rod through a thread structure, one end of the adjusting screw rod is fixedly connected with an output shaft of a micro forward and reverse motor, and the micro forward and reverse motor is fixedly installed outside the light guide cylinder.

Description

Technical Field

[0001] The invention relates to the technical field of laser cladding, in particular to a laser cladding head suitable for protecting the inner wall of a pore. Background Art

[0002] Laser cladding technology refers to a process in which a set coating material is placed on the surface of the coated substrate, and it is melted together with a thin layer on the substrate surface by laser irradiation. After solidification, a surface coating with extremely low dilution and metallurgical bonding with the substrate material is formed, thereby significantly improving the wear resistance, corrosion resistance, heat resistance, oxidation resistance and electrical properties of the substrate material surface.

[0003] Inner hole laser cladding is a new type of green and environmentally friendly inner wall metal surface modification technology. The existing inner hole cladding laser head can refer to the Chinese utility model patent with the authorization announcement number CN215799897U, which discloses an inner hole cladding laser head. "Its structure includes: lens, extension tube, focusing mirror, cooling tube. The lens is installed in the extension tube to reflect the laser beam in the laser fiber. The focusing mirror concentrates the laser beam and irradiates it to the part to be processed of the workpiece to heat the part to be processed. The extension tube can be adjusted in length by telescoping, so that deep hole parts of different depths can be processed. The cooling tube is arranged on the extension tube, mainly to dissipate heat for the focusing mirror and the lens. Otherwise, the lens will overheat during use and affect the effect of refraction or reflection of the laser beam. At the same time, the appropriate processing temperature is conducive to improving the service life of the equipment."

[0004] When the above-mentioned equipment is in use, an extension tube is used to assist in telescoping to adjust the laser irradiation, and a cooling tube is used to assist the device in heat dissipation. However, during the use of the above-mentioned device, when the powder feeding head is inserted into a deep hole, it will collide with the hole wall, which is prone to collision and wear of the powder feeding head, powder feeding blockage or impact on the powder feeding effect. At the same time, it is not convenient to adjust the cladding angle. For this reason, we propose a laser cladding head that is suitable for protecting the inner wall of fine holes to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a laser cladding head suitable for protecting the inner wall of a fine hole, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a laser cladding head adapted to the protection of the inner wall of a fine hole, comprising a light guide tube, one end of the light guide tube is rotatably connected to a mounting portion, the mounting portion is fixedly connected to one end of a rotary joint at the center of one end away from the light guide tube, a light output and powder delivery joint is fixedly connected to the outer wall of one side of the mounting portion close to the rotary joint, and a plurality of connecting tubes are fixedly connected to the outer walls of the light output and powder delivery joint;

[0007] One end of the mounting portion away from the rotary joint is fixedly sleeved with an external gear ring, the external gear ring is meshedly connected to a driving gear, the driving gear is fixedly connected to the output shaft of a micro servo motor, the micro servo motor is fixedly mounted outside the light guide tube, a support assembly is provided on the outer wall of one side of the light guide tube close to the mounting portion, the support assembly is connected to an adjusting screw via a threaded structure, one end of the adjusting screw is fixedly connected to the output shaft of the micro forward and reverse motor, the micro forward and reverse motor is fixedly mounted outside the light guide tube.

[0008] Preferably, the light output and powder feeding joint is tilted toward the rotating joint.

[0009] Preferably, a light delivery channel is provided through the center of the light output and powder delivery connector, one end of which is connected to the interior of the mounting portion, and a plurality of powder delivery channels are provided on the outer side of the center of the light output and powder delivery connector, one end of which is fixedly connected to a connecting pipe.

[0010] Preferably, the interior of the mounting portion is hollow and a reflector is fixedly mounted inside the mounting portion.

[0011] Preferably, one end of the mounting portion is fixedly connected to a connecting ring, the connecting ring is rotatably sleeved on the end of the light guide tube, and the outside of the connecting ring is fixedly sleeved on an external gear ring.

[0012] Preferably, the support assembly includes a fixed ring, a hinge port 1, a support connecting rod, a guide connecting rod, a hinge port 2, and a movable ring. The fixed ring is fixedly sleeved on a side of the light guide tube close to the mounting portion. A plurality of hinge ports 1 are provided on the circumferential side of the fixed ring. The two sides of the hinge port 1 are respectively hinged to one end of the support connecting rod, and the other end of the support connecting rod is respectively hinged to one side of the guide connecting rod. One end of the guide connecting rod is hinged to a hinge port 2, and the hinge port 2 is provided on the circumferential side of the movable ring. The movable ring is slidably sleeved on the outside of the light guide tube, and one side of the movable ring is connected to the adjusting screw through a threaded structure.

[0013] Preferably, the end of the adjusting screw away from the micro forward and reverse motor is coaxially fixedly connected with an anti-slip disk, the hinge interface 1 and the hinge interface 2 are arranged in a one-to-one correspondence, the hinge interface 1 and the hinge interface 2 are evenly distributed around the circumference, and the length of the guide connecting rod is greater than twice the length of the supporting connecting rod.

[0014] Compared with the prior art, the beneficial effects of the present invention are: through the setting of the support component, when the light output powder feeding connector is deep into the hole, the light output powder feeding connector is prevented from contacting the hole wall, and the light output powder feeding connector is prevented from collision and wear, thereby ensuring the cladding effect; at the same time, the support component supports the light guide tube, which is convenient for subsequent laser cladding operations; the micro servo motor transmission drives the mounting part to rotate in a circle, and the mounting part then drives the light output powder feeding connector to rotate synchronously in a circle, thereby facilitating 360-degree laser cladding operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention;

[0016] Figure 2 It is a structural schematic diagram of another viewing angle of the present invention;

[0017] Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention.

[0018] In the figure: light guide tube 1, support assembly 2, fixing ring 21, hinge interface 1 22, support connecting rod 23, guide connecting rod 24, hinge interface 2 25, movable ring 26, adjusting screw 3, anti-slip disk 31, micro forward and reverse motor 4, micro servo motor 5, driving gear 6, external gear ring 7, mounting part 8, connecting ring 81, rotating joint 9, light output powder delivery joint 10, powder delivery channel 101, light delivery channel 102, connecting tube 11, reflector 12. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Example 1

[0021] Reference Figure 1 , 2 , which is the first embodiment of the present invention, and provides a laser cladding head adapted to the protection of the inner wall of a fine hole, comprising a light guide tube 1, one end of the light guide tube 1 is rotatably connected to a mounting portion 8, the mounting portion 8 is fixedly connected to one end of a rotary joint 9 at the center of one end away from the light guide tube 1, a light output and powder feeding joint 10 is fixedly connected to the outer wall of the mounting portion 8 on one side close to the rotary joint 9, and a plurality of connecting tubes 11 are fixedly connected to the outer walls of the light output and powder feeding joint 10;

[0022] One end of the mounting portion 8 away from the rotary joint 9 is fixedly sleeved with the outer gear ring 7, the outer gear ring 7 is meshedly connected to the driving gear 6, the driving gear 6 is fixedly connected to the output shaft of the micro servo motor 5, the micro servo motor 5 is fixedly mounted outside the light guide tube 1, and a support assembly 2 is provided on the outer wall of the light guide tube 1 on one side close to the mounting portion 8. The support assembly 2 is connected with an adjusting screw 3 through a threaded structure, one end of the adjusting screw 3 is fixedly connected to the output shaft of the micro forward and reverse motor 4, and the micro forward and reverse motor 4 is fixedly mounted outside the light guide tube 1.

[0023] The laser beam is in the light guide tube 1, and enters the light delivery channel 102 of the light-emitting powder delivery joint 10 through the refraction of the reflector 12. Finally, the laser beam passes through the light delivery channel 102 and is set at the processing position. The connecting pipe 11 is connected to one end of the rotary joint 9 through the pipeline, and the other end of the rotary joint 9 is connected to the powder delivery equipment through the pipeline. When the inner wall of the pore needs to be laser clad, the micro forward and reverse motor 4 is powered on, and the micro forward and reverse motor 4 drives the fixed adjustment screw 3 to rotate, and the adjustment screw 3 drives the support assembly 2 to work. The circular area formed by the support assembly 2 protrudes from the light-emitting powder delivery joint 10, and then When penetrating into the fine hole, the end of the supporting component 2 will contact the wall of the fine hole, and protect the light-emitting powder feeding connector 10 to avoid contacting the wall of the hole, prevent the light-emitting powder feeding connector 10 from collision and wear, and ensure the cladding effect. During cladding, the micro servo motor 5 is powered on to drive the fixed active gear 6 to rotate, and the active gear 6 drives the meshing external gear ring 7 to rotate, and the external gear ring 7 drives the fixed mounting part 8 to rotate in a circle, and the mounting part 8 then drives the fixed light-emitting powder feeding connector 10 to rotate synchronously in a circle, and the light-emitting powder feeding connector 10 then performs a 360-degree cladding operation on the wall of the fine hole.

[0024] Example 2

[0025] Reference Figure 1-3 , which is the second embodiment of the present invention, and this embodiment is based on the previous embodiment. Specifically, the light output powder feeding joint 10 is tilted toward the direction of the rotary joint 9. The tilted setting can perform cladding operation on the hole wall at the position of the rotary joint 9.

[0026] Specifically, a light delivery channel 102 is provided through the center of the light output powder delivery connector 10, one end of which is connected to the interior of the mounting portion 8, and a plurality of powder delivery channels 101 are respectively opened on the outer side of the center of the light output powder delivery connector 10, one end of each of which is fixedly connected to a connecting pipe 11.

[0027] The connecting pipe 11 is connected to one end joint of the rotating joint 9 through a pipeline, and the other end joint of the rotating joint 9 is connected to the powder feeding equipment through a pipeline. Then, when the mounting part 8 rotates in a circle, the pipeline connected to the connecting pipe 11 can rotate in a synchronous circle, and the pipeline connected to the powder feeding equipment remains in a fixed position.

[0028] Specifically, the interior of the mounting portion 8 is hollow and a reflector 12 is fixedly mounted inside the mounting portion 8 .

[0029] The laser beam is in the light guide tube 1 and enters the light delivery channel 102 of the light output and powder delivery connector 10 through the refraction of the reflector 12. Finally, the laser beam passes through the light delivery channel 102 and is set at the processing position.

[0030] Specifically, one end of the mounting portion 8 is fixedly connected to a connecting ring 81 , the connecting ring 81 is rotatably sleeved to the end of the light guide tube 1 , and the outside of the connecting ring 81 is fixedly sleeved to the outer gear ring 7 .

[0031] Specifically, the support assembly 2 includes a fixed ring 21, a hinge port 22, a support connecting rod 23, a guide connecting rod 24, a hinge port 25, and a movable ring 26. The fixed ring 21 is fixedly sleeved on one side of the light guide tube 1 close to the mounting portion 8. A plurality of hinge ports 22 are provided on the circumferential side of the fixed ring 21. The two sides of the hinge port 22 are respectively hinged to one end of the support connecting rod 23, and the other end of the support connecting rod 23 is respectively hinged to one side of the guide connecting rod 24. One side end of the guide connecting rod 24 is hinged to the hinge port 25. The hinge port 25 is provided on the circumferential side of the movable ring 26. The movable ring 26 is slidably sleeved on the outside of the light guide tube 1, and one side of the movable ring 26 is connected to the adjusting screw 3 through a threaded structure.

[0032] Furthermore, one end of the adjusting screw 3 away from the micro forward and reverse motor 4 is coaxially fixedly connected with an anti-slip disk 31, the hinge interface 1 22 and the hinge interface 2 25 are arranged in a one-to-one correspondence, and at least three hinge interfaces 1 22 and hinge interfaces 2 25 are evenly distributed around the circumference, and the length of the guide connecting rod 24 is greater than twice the length of the supporting connecting rod 23.

[0033] The micro forward and reverse motor 4 is powered on and works, and the micro forward and reverse motor 4 drives the fixed adjusting screw 3 to rotate, and the adjusting screw 3 drives the supporting assembly 2 to work, and the movable ring 26 of the supporting assembly 2 moves toward the fixed ring 21, and the movable ring 26 drives the hinged guide link 24 to swing from a direction away from the outer wall of the light guide tube 1. When the guide link 24 swings, the hinged support link 23 supports the guide link 24, so that a triangular structure is formed between the support link 23, the guide link 24 and the outer wall of the light guide tube 1, and multiple guide links 24 are unfolded, and the circular area formed between the multiple guide links 24 protrudes the light-emitting powder feeding connector 10, and then when penetrating into the fine hole, the end of the guide link 24 will contact the wall of the fine hole, thereby protecting the light-emitting powder feeding connector 10, avoiding the light-emitting powder feeding connector 10 from contacting the hole wall, and preventing the light-emitting powder feeding connector 10 from collision and wear, thereby ensuring the cladding effect.

[0034] Example 3

[0035] Reference Figure 1-3, which is the third embodiment of the present invention. This embodiment is based on the above two embodiments. When in use, the laser beam enters the light delivery channel 102 of the light output powder delivery joint 10 through the refraction of the reflector 12 in the light guide tube 1. Finally, the laser beam passes through the light delivery channel 102 and is arranged at the processing position. The connecting pipe 11 is respectively connected to one end joint of the rotary joint 9 through the pipeline, and the other end joint of the rotary joint 9 is connected to the powder delivery equipment through the pipeline. When the inner wall of the pore needs to be laser clad, the micro forward and reverse motor 4 is powered on to work, the micro forward and reverse motor 4 drives the fixed adjustment screw 3 to rotate, and the adjustment screw 3 drives the support assembly 2 to work, and the movable ring 26 of the support assembly 2 moves toward the fixed ring 21, and the movable ring 26 drives the hinged guide link 24 to swing from the direction away from the outer wall of the light guide tube 1. When the guide link 24 swings, the hinged support link 23 is on the guide The connecting rod 24 is supported to form a triangular structure between the supporting connecting rod 23, the guiding connecting rod 24 and the outer wall of the light guide tube 1, and multiple guiding connecting rods 24 are unfolded, and the circular area formed between the multiple guiding connecting rods 24 protrudes the light-emitting powder feeding joint 10, and then when penetrating into the fine hole, the end of the guiding connecting rod 24 will contact the wall of the fine hole, and the light-emitting powder feeding joint 10 is protected to avoid the light-emitting powder feeding joint 10 from contacting the hole wall, and to prevent the light-emitting powder feeding joint 10 from collision and wear, thereby ensuring the cladding effect. During cladding, the micro servo motor 5 is powered on to drive the fixed active gear 6 to rotate, and the active gear 6 drives the meshing outer gear ring 7 to rotate, and the outer gear ring 7 drives the fixed mounting part 8 to rotate in a circle, and the mounting part 8 then drives the fixed light-emitting powder feeding joint 10 to rotate synchronously in a circle, and the light-emitting powder feeding joint 10 then performs a 360-degree cladding operation on the hole wall of the fine hole.

[0036] It should be noted that the specific models and specifications of the micro forward and reverse motor, micro servo motor, rotary joint, and reflector need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laser cladding head adapted for protecting the inner wall of a fine hole, comprising a light guide tube (1), characterized in that: One end of the light guide tube (1) is rotatably connected to a mounting portion (8), the mounting portion (8) is fixedly connected to one end of a rotating joint (9) at a center away from one end of the light guide tube (1), a light output and powder delivery joint (10) is fixedly connected to an outer wall of a side of the mounting portion (8) close to the rotating joint (9), and a plurality of connecting tubes (11) are respectively fixedly connected to the outer walls of the light output and powder delivery joint (10); One end of the mounting portion (8) away from the rotary joint (9) is fixedly sleeved with an external gear ring (7), the external gear ring (7) is meshedly connected to a driving gear (6), the driving gear (6) is fixedly connected to an output shaft of a micro servo motor (5), the micro servo motor (5) is fixedly mounted outside the light guide tube (1), a support assembly (2) is provided on an outer wall of a side of the light guide tube (1) close to the mounting portion (8), the support assembly (2) is connected to an adjusting screw (3) via a threaded structure, one end of the adjusting screw (3) is fixedly connected to an output shaft of a micro forward and reverse motor (4), the micro forward and reverse motor (4) is fixedly mounted outside the light guide tube (1).

2. A laser cladding head adapted for protecting the inner wall of a fine hole according to claim 1, characterized in that: The light output and powder feeding joint (10) is arranged to be inclined toward the direction of the rotary joint (9).

3. The laser cladding head adapted for protecting the inner wall of a fine hole according to claim 1, characterized in that: A light delivery channel (102) is provided through the center of the light output powder delivery connector (10), one end of the light delivery channel (102) is connected to the inside of the mounting portion (8), and a plurality of powder delivery channels (101) are respectively provided outside the center of the light output powder delivery connector (10), and one end of each of the powder delivery channels (101) is fixedly connected to a connecting pipe (11).

4. The laser cladding head adapted for protecting the inner wall of a fine hole according to claim 1, characterized in that: The interior of the mounting portion (8) is hollow and a reflector (12) is fixedly mounted inside the mounting portion (8).

5. The laser cladding head adapted for protecting the inner wall of a fine hole according to claim 1, characterized in that: One end of the mounting portion (8) is fixedly connected to a connecting ring (81), the connecting ring (81) is rotatably sleeved on the end of the light guide tube (1), and the outside of the connecting ring (81) is fixedly sleeved on the outer gear ring (7).

6. The laser cladding head adapted for protecting the inner wall of a fine hole according to claim 1, characterized in that: The support assembly (2) comprises a fixed ring (21), a hinge joint 1 (22), a support connecting rod (23), a guide connecting rod (24), a hinge joint 2 (25), and a movable ring (26). The fixed ring (21) is fixedly sleeved on a side of the light guide tube (1) close to the mounting portion (8). A plurality of hinge joints 1 (22) are provided on the peripheral side of the fixed ring (21). The two sides of the hinge joint 1 (22) are respectively hinged to one end of the support connecting rod (23). The other end of the support connecting rod (23) is respectively hinged to one side of the guide connecting rod (24). One end of one side of the guide connecting rod (24) is hinged to hinge joint 2 (25). The hinge joint 2 (25) is provided on the peripheral side of the movable ring (26). The movable ring (26) is slidably sleeved on the outside of the light guide tube (1). One side of the movable ring (26) is connected to the adjusting screw (3) through a threaded structure.

7. The laser cladding head adapted for protecting the inner wall of a fine hole according to claim 6, characterized in that: The end of the adjusting screw rod (3) away from the micro forward and reverse motor (4) is coaxially fixedly connected with an anti-slip disk (31), the hinge interface 1 (22) and the hinge interface 2 (25) are arranged in a one-to-one correspondence, and at least three hinge interfaces 1 (22) and hinge interfaces 2 (25) are evenly distributed around the circumference, and the length of the guide connecting rod (24) is greater than twice the length of the supporting connecting rod (23).

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