Laser cladding nozzle with airflow protection

Abstract

The utility model belongs to the technical field of laser cladding nozzles, and particularly relates to a laser cladding nozzle with airflow protection, which comprises a nozzle and a pipeline, the pipeline is arranged on the outer surface of the nozzle, and a feeding device is arranged in the pipeline. The feeding device comprises a feeding plate, and the feeding plate is fixedly connected to the inner wall of the pipeline. Through the arrangement of the steering device, the reciprocating screw sleeve is stressed and does reciprocating rectilinear motion on the circumferential surface of the reciprocating screw rod through the telescopic rod, so that the scraping plate fixed on the circumferential surface of the reciprocating screw sleeve is stressed to move along with the motion of the reciprocating screw sleeve and scrapes the top of the feeding plate back and forth; it is guaranteed that no residual powder exists at the top of the feeding plate, it is guaranteed that the powder fully falls into the nozzle and is sprayed out, and the problems that a scraper blade cannot be stressed to scrape back and forth at the top of the feeding plate, no residual powder exists at the top of the feeding plate, and consequently it cannot be guaranteed that the powder fully falls into the nozzle and is sprayed out are solved.

Description

Technical Field

[0001] This utility model belongs to the field of laser cladding nozzle technology, specifically relating to a laser cladding nozzle with airflow protection. Background Technology

[0002] Laser cladding is a novel surface modification technology that uses a laser beam to heat the surface of the cladding material and substrate, thereby fusing the required special material onto the workpiece surface. Compared with commonly used technologies such as surfacing and plasma spraying (coating), laser cladding technology has a series of outstanding features: the cladding layer has a fine and dense structure, higher hardness, and better corrosion resistance and wear resistance; the cladding layer and the substrate are metallurgically bonded.

[0003] Chinese patent publication number CN 222351613 U discloses a laser cladding nozzle with coaxial atmosphere protection, including a housing. An upper water inlet pipe is fixedly installed on the right side of the housing, and an upper water outlet pipe is fixedly connected to the side of the housing away from the upper water inlet pipe. Air inlet pipes are evenly distributed on the outer wall of the housing. A powder inlet pipe is installed on one side of the air inlet pipe, and one end of the powder inlet pipe is fixedly connected to the outer wall of the housing. A lower water outlet pipe is fixedly installed on the right side of the lower end of the housing, and a lower water inlet pipe is fixedly connected to the end of the housing away from the lower water outlet pipe.

[0004] However, the current laser cladding nozzle with coaxial atmosphere protection has the following problems: it cannot make the scraper scrape back and forth on the top of the feed plate, and it cannot ensure that there is no residual powder on the top of the feed plate, which means that the powder cannot be fully dropped into the nozzle and sprayed out. Therefore, we propose a laser cladding nozzle with airflow protection. Utility Model Content

[0005] The purpose of this invention is to provide a laser cladding nozzle with airflow protection, which can solve the problem in related technologies that the scraper cannot be subjected to force to scrape back and forth on the top of the feed plate, and cannot ensure that there is no residual powder on the top of the feed plate, thus preventing the powder from falling into the nozzle and being sprayed out.

[0006] The specific technical solution adopted by this utility model is as follows:

[0007] A laser cladding nozzle with airflow protection includes a nozzle and a pipe. The pipe is disposed on the outer surface of the nozzle, and a feeding device is disposed inside the pipe. The feeding device includes a feeding plate, which is fixedly connected to the inner wall of the pipe. A rotating shaft is rotatably connected to the top of the feeding plate. A first bevel gear is fixedly connected to the circumferential surface of the rotating shaft. A reciprocating screw is rotatably connected to the circumferential surface of the pipe. A reciprocating threaded sleeve is threadedly connected to the circumferential surface of the reciprocating screw. A scraper is fixedly connected to the circumferential surface of the reciprocating threaded sleeve.

[0008] Preferably, a telescopic rod is fixedly connected to the circumferential surface of the reciprocating screw sleeve, a fan blade assembly is fixedly connected to the circumferential surface of the rotating shaft, and a second bevel gear is fixedly connected to the circumferential surface of the reciprocating screw. This design allows the fan blade assembly to rotate according to the airflow.

[0009] Preferably, the telescopic rod is fixedly connected to the circumferential surface of the pipe, and there are two telescopic rods, which are symmetrical to each other along the vertical central axis of the pipe. This design helps the telescopic rod to limit the movement of the reciprocating threaded sleeve.

[0010] Preferably, the pipe is provided with an adjustment device, which includes a connecting cylinder that is fixedly inserted through the circumference of the pipe. A rotating rod is rotatably connected to the outer surface of the connecting cylinder, and an adjustment plate is fixedly connected to the circumference of the rotating rod. This design is beneficial because the rotating rod can drive the adjustment plate to rotate when subjected to force.

[0011] Preferably, a connecting block is fixedly connected to the circumferential surface of the rotating rod, and a rectangular groove is formed on the outer surface of the connecting cylinder. One end of a spring is fixedly connected to the inner wall of the rectangular groove, and a locking block is fixedly connected to one end of the spring. This design facilitates the connection block to contact the locking block and lock the connection block.

[0012] Preferably, the rectangular groove is located on the movement trajectory of the card block, and the number of card blocks is set to several, and they are arranged in a circular array on the circumferential surface of the connecting cylinder. The card blocks are slidably connected to the inner wall of the rectangular groove. This design is beneficial for the card blocks to slide on the inner wall of the rectangular groove.

[0013] Preferably, the scraper is T-shaped, and there are two scrapers arranged opposite each other along the vertical central axis of the feed plate. This design helps the scrapers to scrape the material on the top of the feed plate into the nozzle.

[0014] The technical effects achieved by this utility model are as follows:

[0015] 1. This utility model, through the setting of the steering device, causes the reciprocating thread sleeve to be subjected to force and make reciprocating linear motion on the circumferential surface of the reciprocating thread screw through the telescopic rod. This causes the scraper fixed on the circumferential surface of the reciprocating thread sleeve to be subjected to force and move along with the movement of the reciprocating thread sleeve, and scrapes back and forth on the top of the feed plate to ensure that there is no residual powder on the top of the feed plate, and to ensure that the powder fully falls into the nozzle and is sprayed out.

[0016] 2. By setting up an auxiliary device, this utility model enables the connecting block to rotate continuously with the rotating rod. The connecting block no longer contacts the locking block, and the locking block can be ejected by the spring force to lock the connecting block. This allows the operator to manually adjust the powder flow rate by rotating the rotating rod, making the powder flow rate better controlled by the operator and improving the operator's work efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the entire utility model;

[0018] Figure 2 This is a cross-sectional schematic diagram of the structure at the pivot of this utility model;

[0019] Figure 3 This is a utility model Figure 2 Enlarged schematic diagram of the structure at point A;

[0020] Figure 4 This is a three-dimensional schematic diagram of the structure at the connecting cylinder of this utility model;

[0021] Figure 5 This is a utility model Figure 4 A three-dimensional magnified schematic diagram of the structure at point B.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1. Nozzle; 2. Pipe; 3. Feeding device; 31. Feeding plate; 32. Rotating shaft; 33. First bevel gear; 34. Reciprocating screw; 35. Reciprocating sleeve; 36. Scraper; 37. Telescopic rod; 38. Fan blade assembly; 39. Second bevel gear; 4. Adjusting device; 41. Connecting cylinder; 42. Rotating rod; 43. Adjusting plate; 44. Connecting block; 45. Rectangular groove; 46. Spring; 47. Locking block. Detailed Implementation

[0024] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0025] like Figure 1-4 As shown, a laser cladding nozzle with airflow protection includes a nozzle 1 and a pipe 2. The pipe 2 is disposed on the outer surface of the nozzle 1, and a feeding device 3 is disposed inside the pipe 2. The feeding device 3 includes a feeding plate 31, which is fixedly connected to the inner wall of the pipe 2. A rotating shaft 32 is rotatably connected to the top of the feeding plate 31. A first bevel gear 33 is fixedly connected to the circumferential surface of the rotating shaft 32. A reciprocating screw 34 is rotatably connected to the circumferential surface of the pipe 2. A reciprocating sleeve 35 is threadedly connected to the circumferential surface of the reciprocating screw 34. A scraper 36 is fixedly connected to the circumferential surface of the reciprocating sleeve 35.

[0026] A telescopic rod 37 is fixedly connected to the circumferential surface of the reciprocating screw sleeve 35, a fan blade assembly 38 is fixedly connected to the circumferential surface of the rotating shaft 32, and a second bevel gear 39 is fixedly connected to the circumferential surface of the reciprocating screw 34. This design is beneficial for the fan blade assembly 38 to rotate according to the airflow.

[0027] The telescopic rod 37 is fixedly connected to the circumferential surface of the pipe 2. There are two telescopic rods 37, which are symmetrical about each other along the vertical central axis of the pipe 2. This design helps the telescopic rod 37 to limit the movement of the reciprocating threaded sleeve 35.

[0028] According to the above structure, when nozzle 1 starts to dispense powder, the powder enters nozzle 1 through pipe 2 and is evenly sprayed out. As the powder enters nozzle 1, it first passes through the various channels on the outer surface of feed plate 31. However, during this process, a large amount of powder also remains on top of feed plate 31. To ensure that the powder is evenly and completely sprayed out by nozzle 1, when the airflow flows in pipe 2, the fan blade assembly 38 rotates, driving the rotating shaft 32 to rotate, forcing the first bevel gear 33 to drive the second... The bevel gear 39 rotates accordingly, forcing the second bevel gear 39 to drive the reciprocating screw 34 to start rotating. When the reciprocating screw 34 rotates, it causes the reciprocating sleeve 35 to be subjected to force and make reciprocating linear motion on the circumferential surface of the reciprocating screw 34 through the telescopic rod 37. This causes the scraper 36 fixed on the circumferential surface of the reciprocating sleeve 35 to be subjected to force and move along with the movement of the reciprocating sleeve 35, and scrape the top of the feed plate 31 back and forth to ensure that there is no residual powder on the top of the feed plate 31, and to ensure that the powder falls fully into the nozzle 1 and is sprayed out.

[0029] like Figure 4-5 As shown, an adjustment device 4 is provided inside the pipe 2. The adjustment device 4 includes a connecting cylinder 41, which is fixedly inserted through the circumference of the pipe 2. A rotating rod 42 is rotatably connected to the outer surface of the connecting cylinder 41, and an adjustment plate 43 is fixedly connected to the circumference of the rotating rod 42. This design is beneficial to the fact that the rotating rod 42 can drive the adjustment plate 43 to rotate when subjected to force.

[0030] A connecting block 44 is fixedly connected to the circumferential surface of the rotating rod 42. A rectangular groove 45 is opened on the outer surface of the connecting cylinder 41. One end of a spring 46 is fixedly connected to the inner wall of the rectangular groove 45. A locking block 47 is fixedly connected to one end of the spring 46. This design is conducive to the connecting block 44 being able to contact the locking block 47 and lock the connecting block 44.

[0031] The rectangular groove 45 is located on the movement trajectory of the locking block 47. The number of locking blocks 47 is set to several, and they are arranged in a circular array on the circumferential surface of the connecting cylinder 41. The locking blocks 47 are slidably connected to the inner wall of the rectangular groove 45. This design is conducive to the locking blocks 47 being able to slide on the inner wall of the rectangular groove 45.

[0032] The scraper 36 is T-shaped, and there are two scrapers 36, which are positioned relative to each other along the vertical central axis of the feed plate 31. This design is beneficial for the scraper 36 to scrape the material at the top of the feed plate 31 into the nozzle 1.

[0033] According to the above structure, in order to control the feed flow rate in the feeding device 3, the operator can rotate the rotating rod 42, causing the rotating rod 42 to rotate on the outer surface of the connecting cylinder 41. This forces the adjusting plate 43 fixed on the circumference of the rotating rod 42 to be offset by the rotation of the rotating rod 42, thereby controlling the powder output flow rate in the feeding device 3. When the operator rotates the rotating rod 42, the connecting block 44 also rotates, causing the connecting block 44 to contact the locking block 47. This forces the locking block 47 to slide on the inner wall of the rectangular groove 45. As the connecting block 44 continues to rotate with the rotating rod 42, the connecting block 44 no longer contacts the locking block 47. The locking block 47 can be ejected by the elastic force of the spring 46, locking the connecting block 44. This allows the operator to manually adjust the powder output flow rate by rotating the rotating rod 42, making the powder output flow rate better controlled by the operator and improving the operator's work efficiency.

[0034] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A laser cladding nozzle with gas flow protection, characterized by: It includes a nozzle (1) and a pipe (2), the pipe (2) being disposed on the outer surface of the nozzle (1), and a feeding device (3) being disposed inside the pipe (2). The feeding device (3) includes a feeding plate (31), which is fixedly connected to the inner wall of the pipe (2). A rotating shaft (32) is rotatably connected to the top of the feeding plate (31). A first bevel gear (33) is fixedly connected to the circumferential surface of the rotating shaft (32). A reciprocating screw (34) is rotatably connected to the circumferential surface of the pipe (2). A reciprocating threaded sleeve (35) is threadedly connected to the circumferential surface of the reciprocating screw (34). A scraper (36) is fixedly connected to the circumferential surface of the reciprocating threaded sleeve (35).

2. A laser cladding nozzle with gas flow protection according to claim 1, characterized in that: The reciprocating screw sleeve (35) is fixedly connected to a telescopic rod (37) on its circumference, the rotating shaft (32) is fixedly connected to a fan blade assembly (38) on its circumference, and the reciprocating screw (34) is fixedly connected to a second bevel gear (39) on its circumference.

3. A laser cladding nozzle with gas flow protection according to claim 2, characterized in that: The telescopic rod (37) is fixedly connected to the circumferential surface of the pipe (2). There are two telescopic rods (37), which are symmetrical to each other along the vertical central axis of the pipe (2).

4. A laser cladding nozzle with gas flow protection according to claim 1, characterized in that: An adjustment device (4) is provided inside the pipe (2). The adjustment device (4) includes a connecting cylinder (41). The connecting cylinder (41) is fixedly inserted through the circumference of the pipe (2). A rotating rod (42) is rotatably connected to the outer surface of the connecting cylinder (41). An adjustment plate (43) is fixedly connected to the circumference of the rotating rod (42).

5. A laser cladding nozzle with gas flow protection according to claim 4, characterized in that: A connecting block (44) is fixedly connected to the circumferential surface of the rotating rod (42). A rectangular groove (45) is opened on the outer surface of the connecting cylinder (41). One end of a spring (46) is fixedly connected to the inner wall of the rectangular groove (45). A locking block (47) is fixedly connected to one end of the spring (46).

6. A laser cladding nozzle with gas flow protection according to claim 5, characterized in that: The rectangular groove (45) is located on the movement trajectory of the locking block (47). The number of locking blocks (47) is set to several, and they are arranged in a circular array on the circumferential surface of the connecting cylinder (41). The locking blocks (47) are slidably connected to the inner wall of the rectangular groove (45).

7. A laser cladding nozzle with gas flow protection according to claim 1, characterized in that: The scraper (36) is T-shaped, and there are two scrapers (36) that are aligned with each other along the vertical central axis of the feed plate (31).

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