Cladding nozzle structure for laser cladding equipment

Abstract

The utility model discloses a cladding nozzle structure for laser cladding equipment, and relates to the technical field of cladding nozzles, the cladding nozzle structure comprises a nozzle body, the outer side of the nozzle body is movably connected with a powder spraying sleeve, one side of the nozzle body is movably connected with a moving ring, two sides of one end of the moving ring are fixedly connected with positioning blocks, and the two sides of the other end of the moving ring are fixedly connected with the powder spraying sleeve. A pulling assembly is arranged on one side of the moving ring, a first fixing ring is fixedly connected to one side of the powder spraying sleeve, and a positioning groove is formed in the first fixing ring. By the adoption of the structure, the driving assembly is installed on one side of the nozzle body, the driving assembly is used for driving the installation frame to rotate, the installation frame drives the scraping strip to rotate, the inner wall of an annular powder sleeve formed between the nozzle body and the powder spraying sleeve can be cleaned, and powder waste caused by the fact that a small amount of powder adheres to the inner wall of a powder channel is avoided; and the production cost is reduced, powder channel blockage caused by accumulated powder is also avoided, and the cladding work continuity is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of cladding nozzles, in particular to a cladding nozzle structure for laser cladding equipment. Background Art

[0002] Laser cladding equipment is a high-precision processing equipment, mainly used for surface modification technology. It uses a high-energy-density laser beam to eject the cladding material from the cladding nozzle onto the surface of the substrate, and melts it together with the thin layer on the surface of the substrate to form a metallurgically bonded additive cladding layer.

[0003] For example, the Chinese patent publication number CN212505067U discloses a laser cladding nozzle, comprising a nozzle body, a vertically penetrating laser channel is provided in the center of the nozzle body, and a powder spray sleeve is detachably provided on the outer side of the nozzle body; an annular flange is provided in the inner cavity of the powder spray sleeve, the upper part of the nozzle body is a boss structure, and the lower part is a nozzle structure, the boss structure is supported on the annular flange, and the nozzle structure passes through the annular flange and forms a conical head at the lower end; a powder outlet channel is formed between the inner wall of the powder spray sleeve at the lower end of the annular flange and the inner wall of the nozzle structure, the top of the powder outlet channel is an annular gas-powder mixing chamber, and the bottom is a conical annular powder channel; the powder spray sleeve is provided with a powder spray interface connected to the gas-powder mixing chamber; a sealing ring is provided between the top surface of the annular flange and the bottom surface of the boss structure.

[0004] The above-mentioned annular gas-powder mixing chamber is set in the powder outlet channel to improve the mixing uniformity of the powder, but the existing cladding nozzle structure still has some defects that need to be improved. Specifically, when the powder is introduced into the annular powder channel formed between the nozzle body and the powder spray sleeve, although most of the powder can pass through smoothly, a small amount of powder will inevitably adhere to the inner wall of the powder spray sleeve, which not only leads to powder waste and increases production costs, but the powder accumulated for a long time may also cause blockage of the powder channel, affecting the continuity and quality of the cladding process. In addition, the nozzle body and the powder spray sleeve are fixed with screws. This fixing method not only makes the disassembly of the nozzle cumbersome and time-consuming, but also easily causes the nozzle to work unstable due to the loosening of the screws, thereby affecting the accuracy and reliability of the cladding effect. Utility Model Content

[0005] In view of the problems mentioned in the background technology, the purpose of the present invention is to provide a cladding nozzle structure for laser cladding equipment to solve the problems in the background technology.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] A cladding nozzle structure for laser cladding equipment includes a nozzle body, a powder spraying sleeve movably connected to the outer side of the nozzle body, a moving ring movably connected to one side of the nozzle body, positioning blocks are fixedly connected on both sides of one end of the moving ring, a pulling assembly is provided on one side of the moving ring, a first fixing ring is fixedly connected to one side of the powder spraying sleeve, a positioning groove is provided on the first fixing ring, the positioning block is movably connected to the positioning groove, an external thread is provided on one side of the nozzle body, an internal thread is provided on one side of the powder spraying sleeve, the external thread is threadedly connected to the internal thread, a driving assembly is provided on the inner side of the powder spraying sleeve on the nozzle body, the inner wall of the powder spraying sleeve is slidably connected to a scraper strip through the driving assembly, and two scrapers are provided, one side of one scraper strip is movably connected to the outer side of the nozzle body, and one side of the other scraper strip is movably connected to the inner side of the powder spraying sleeve, and powder spraying interfaces are provided on both sides of the powder spraying sleeve.

[0008] As an optimal technical solution, the pulling assembly includes a second fixed ring, which is fixedly connected to the side of the nozzle body away from the powder spray sleeve. Springs are fixedly connected on both sides of one end of the second fixed ring, and one end of the spring is fixedly connected to one end of the movable ring.

[0009] As a preferred technical solution, one side of the upper end of the movable ring is fixedly connected to a pull rod, and an end of the pull rod away from the first fixed ring is fixedly connected to a pull block.

[0010] As a preferred technical solution, the drive assembly includes a motor, which is fixedly connected to the inner side of the nozzle body, and the output end of the motor is fixedly connected to a small gear, one side of the small gear is meshed with a large gear, and the large gear is rotatably connected to one side of the nozzle body. Connecting rods are fixedly connected on both sides of the lower end of the large gear, and a connecting ring is fixedly connected to the end of the connecting rod away from the large gear, and a scraper strip is arranged on the outside of the connecting ring.

[0011] As a preferred technical solution, one end of the scraper strip is fixedly connected to a mounting bracket, and one side of the mounting bracket is fixedly connected to the connecting ring.

[0012] As an optimal technical solution, slots are provided on both sides of the lower portion of the mounting bracket, one side of the mounting bracket is inserted into the inside of the slot, a locking rod is threadedly connected to the connecting ring, and the locking rod extends into the inside of the slot, and one side of the locking rod is threadedly connected to one side of the mounting bracket.

[0013] In summary, the present invention has the following beneficial effects:

[0014] First, in the present invention, a driving assembly is installed on one side of the nozzle body, and the driving assembly drives the mounting frame to rotate, and the mounting frame drives the scraper to rotate, so that the inner wall of the annular powder sleeve formed between the nozzle body and the powder spray sleeve can be cleaned, thereby preventing a small amount of powder from adhering to the inner wall of the powder channel and causing powder waste, reducing production costs, and preventing accumulated powder from clogging the powder channel, thereby ensuring the continuity of the cladding work;

[0015] Second, in the present invention, an external thread is provided on the nozzle body and an internal thread is provided on the powder spray sleeve, so that the nozzle body and the flat powder spray sleeve are connected and fixed, and then the movable ring is driven to move by pulling the assembly, so that the positioning block on the movable ring is inserted into the positioning groove of the first fixed ring. Therefore, it is not only convenient to quickly disassemble and assemble the nozzle, but also prevent the nozzle body and the powder spray sleeve from loosening, ensuring that the two are tightly connected so that the nozzle can work stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the nozzle body structure of the utility model;

[0018] Figure 3 This utility model Figure 2 A schematic diagram of the enlarged structure at point A;

[0019] Figure 4 This is a schematic diagram of the structure of the powder spraying sleeve of the utility model;

[0020] Figure 5 It is a schematic diagram of the local structure of the drive component of the utility model.

[0021] Figure markings: 1. Nozzle body; 2. Powder spray sleeve; 3. Moving ring; 4. Positioning block; 5. First fixed ring; 6. Positioning groove; 7. Pulling assembly; 71. Second fixed ring; 72. Spring; 73. Pull rod; 74. Pull block; 8. External thread; 9. Internal thread; 10. Powder spray interface; 11. Mounting frame; 12. Scraper strip; 13. Driving assembly; 131. Motor; 132. Small gear; 133. Large gear; 134. Connecting rod; 135. Connecting ring; 14. Slot; 15. Locking rod. DETAILED DESCRIPTION

[0022] Example

[0023] refer to Figures 1 to 5, a cladding nozzle structure for laser cladding equipment of this embodiment includes a nozzle body 1, a powder spraying sleeve 2 is movably connected to the outside of the nozzle body 1, and an annular powder sleeve is formed between the powder spraying sleeve 2 and the nozzle body 1, a movable ring 3 is movably connected to one side of the nozzle body 1, and positioning blocks 4 are fixedly connected to both sides of one end of the movable ring 3, and a pulling component 7 is provided on one side of the movable ring 3, a first fixed ring 5 is fixedly connected to one side of the powder spraying sleeve 2, a positioning groove 6 is provided on the first fixed ring 5, and the positioning block 4 is movably connected to the positioning groove 6, an external thread 8 is provided on one side of the nozzle body 1, and an internal thread 9 is provided on one side of the powder spraying sleeve 2, and the external thread 8 is threadedly connected to the internal thread 9, and the upper position of the nozzle body 1 is fixedly connected to the first fixed ring 5. A driving assembly 13 is provided on the inner side of the powder spray sleeve 2, and the inner wall of the powder spray sleeve 2 is slidably connected to a scraper 12 through the driving assembly 13, and there are two scrapers 12, one side of one scraper 12 is movably connected to the outer side of the nozzle body 1, and one side of the other scraper 12 is movably connected to the inner side of the powder spray sleeve 2. Powder spray interfaces 10 are provided on both sides of the powder spray sleeve 2. Through the above arrangement, a small amount of powder is prevented from adhering to the inner wall of the powder channel to cause powder waste, thereby reducing production costs, and avoiding accumulated powder from causing blockage of the powder channel, ensuring the continuity of the cladding work, not only facilitating the quick disassembly and assembly of the nozzle, but also preventing the nozzle body 1 and the powder spray sleeve 2 from loosening, ensuring that the two are tightly connected to ensure stable operation of the nozzle.

[0024] refer to Figure 2 The pulling assembly 7 includes a second fixing ring 71, which is fixedly connected to the side of the nozzle body 1 away from the powder spray sleeve 2. One end of the second fixing ring 71 is fixedly connected to a spring 72 on both sides. One end of the spring 72 is fixedly connected to one end of the moving ring 3. One side of the upper end of the moving ring 3 is fixedly connected to a pull rod 73, and the end of the pull rod 73 away from the first fixing ring 5 is fixedly connected to a pull block 74; by setting the pulling assembly 7, when it is necessary to make the moving ring 3 drive the positioning block 4 to move, the pull block 74 is used to drive the pull rod 73 to move, so that the pull rod 73 drives the moving ring 3 to move. When the pull block 74 is released, multiple springs 72 reset the moving ring 3, and the positioning block 4 can be inserted into the positioning groove 6 of the first fixing ring 5, so that the nozzle body 1 is fixedly connected to the powder spray sleeve 2.

[0025] refer to Figure 3 and Figure 5The drive assembly 13 includes a motor 131, which is fixedly connected to one side of the interior of the nozzle body 1. The output end of the motor 131 is fixedly connected to a small gear 132, and one side of the small gear 132 is meshed with a large gear 133. The large gear 133 is rotatably connected to one side of the nozzle body 1. Both sides of the lower end of the large gear 133 are fixedly connected to a connecting rod 134. The end of the connecting rod 134 away from the large gear 133 is fixedly connected to a connecting ring 135, and the scraper 12 is arranged on the outside of the connecting ring 135; by setting the drive assembly 13, the motor 131 is used to drive the small gear 132 to rotate, so that the small gear 132 drives the large gear 133 to rotate, and the large gear 133 is fixed to the connecting ring 135 through the connecting rod 134. The scraper 12 is provided on both sides of the connecting ring 135, which can drive the scraper 12 to move, so as to continuously clean the inner wall of the powder spray sleeve 2 and the outer wall of the nozzle body 1, reduce powder adhesion, avoid clogging between the powder spray sleeve 2 and the nozzle body 1, and provide protection for the continuous operation of the nozzle.

[0026] refer to Figure 3 One end of the scraper strip 12 is fixedly connected to the mounting bracket 11, and one side of the mounting bracket 11 is fixedly connected to the connecting ring 135. Slots 14 are provided on both sides of the lower order of the mounting bracket 11. One side of the mounting bracket 11 is inserted into the inside of the slot 14, and a locking rod 15 is threadedly connected to the connecting ring 135, and the locking rod 15 extends into the inside of the slot 14. One side of the locking rod 15 is threadedly connected to one side of the mounting bracket 11; by setting the mounting bracket 11 and the connecting ring 135 to be fixed, the scraper strip 12 is fixed on the connecting ring 135, so that the connecting ring 135 can drive the scraper strip 12 to rotate, and by opening a slot 14 under the connecting ring 135, after one side of the mounting bracket 11 is inserted into the slot 14, the locking rod 15 is used to fix the mounting bracket 11 to the slot 14, which is convenient for subsequent disassembly and replacement of the mounting bracket 11, thereby replacing the scraper strip 12.

[0027] Principle and advantages of use: The powder spray sleeve 2 is connected to the external thread 8 of the nozzle body 1 through the internal thread 9, and the movable ring 3 drives the positioning block 4 to be inserted into the positioning groove 6 of the first fixed ring 5, so that the nozzle body 1 and the powder spray sleeve 2 are firmly fixed to prevent the connection between the two from loosening, ensuring the stable operation of the nozzle, and the powder enters the annular powder channel formed between the nozzle body 1 and the powder spray sleeve 2 and is sprayed out. In this process, the motor 131 drives the small gear 132 to rotate, the small gear 132 drives the large gear 133 to rotate, the large gear 133 drives the connecting rod 134 to rotate the connecting ring 135, and the connecting ring 135 drives the mounting bracket 11 is rotated to move the scrapers 12 on both sides of the mounting frame 11, so that the inner wall of the annular powder sleeve formed between the nozzle body 1 and the powder spray sleeve 2 can be cleaned to avoid a small amount of powder adhering to the inner wall of the powder channel and causing powder waste, thereby reducing production costs and avoiding the accumulation of powder causing blockage of the powder channel, thereby ensuring the continuity of the cladding work. When the powder spray sleeve 2 needs to be disassembled from the nozzle body 1 for cleaning, the pull block 74 drives the pull rod 73 to move, and the pull rod 73 drives the movable ring 3 to move, and the positioning block 4 leaves the positioning groove 6. The powder spray sleeve 2 can be removed by rotating it, which is convenient for the maintenance work of the powder spray sleeve 2 and the nozzle body 1.

Claims

1. A cladding nozzle structure for laser cladding equipment, comprising a nozzle body (1), characterized in that: The outer side of the nozzle body (1) is movably connected to a powder spray sleeve (2), one side of the nozzle body (1) is movably connected to a moving ring (3), one end of the moving ring (3) is fixedly connected to both sides with positioning blocks (4), one side of the moving ring (3) is provided with a pulling assembly (7), one side of the powder spray sleeve (2) is fixedly connected to a first fixing ring (5), the first fixing ring (5) is provided with a positioning groove (6), the positioning block (4) is movably connected to the positioning groove (6), one side of the nozzle body (1) is provided with an external thread (8), the powder spray sleeve (2) An internal thread (9) is provided on one side of the nozzle body (1), and the external thread (8) is threadedly connected to the internal thread (9). A driving assembly (13) is provided on the inner side of the powder spray sleeve (2) on the nozzle body (1). The inner wall of the powder spray sleeve (2) is slidably connected to a scraper (12) through the driving assembly (13). There are two scrapers (12), one side of which is movably connected to the outer side of the nozzle body (1), and one side of the other scraper (12) is movably connected to the inner side of the powder spray sleeve (2). Powder spray interfaces (10) are provided on both sides of the powder spray sleeve (2).

2. The cladding nozzle structure for laser cladding equipment according to claim 1, characterized in that: The pulling assembly (7) comprises a second fixing ring (71), the second fixing ring (71) being fixedly connected to a side of the nozzle body (1) away from the powder spray sleeve (2), one end of the second fixing ring (71) being fixedly connected to both sides thereof with a spring (72), one end of the spring (72) being fixedly connected to one end of the moving ring (3).

3. The cladding nozzle structure for laser cladding equipment according to claim 2, characterized in that: One side of the upper end of the movable ring (3) is fixedly connected to a pull rod (73), and one end of the pull rod (73) away from the first fixed ring (5) is fixedly connected to a pull block (74).

4. The cladding nozzle structure for laser cladding equipment according to claim 1, characterized in that: The driving assembly (13) comprises a motor (131), the motor (131) being fixedly connected to one side of the interior of the nozzle body (1), the output end of the motor (131) being fixedly connected to a small gear (132), one side of the small gear (132) being meshedly connected to a large gear (133), and the large gear (133) being rotatably connected to one side of the nozzle body (1).

5. The cladding nozzle structure for laser cladding equipment according to claim 4, characterized in that: Both sides of the lower end of the large gear (133) are fixedly connected to connecting rods (134), one end of the connecting rod (134) away from the large gear (133) is fixedly connected to a connecting ring (135), and the scraper (12) is arranged on the outside of the connecting ring (135).

6. The cladding nozzle structure for laser cladding equipment according to claim 2, characterized in that: One end of the scraper strip (12) is fixedly connected to a mounting frame (11), and one side of the mounting frame (11) is fixedly connected to a connecting ring (135).

7. The cladding nozzle structure for laser cladding equipment according to claim 6, characterized in that: Slots (14) are provided on both sides of the lower portion of the mounting frame (11), one side of the mounting frame (11) is inserted into the interior of the slot (14), a locking rod (15) is threadedly connected to the connecting ring (135), and the locking rod (15) extends into the interior of the slot (14), and one side of the locking rod (15) is threadedly connected to one side of the mounting frame (11).

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