A nozzle structure for water guided laser

Abstract

The utility model discloses a nozzle structure for water guide laser, specifically relates to water guide laser processing technical field, including setting in the water guide frame body of focusing mirror group bottom and nozzle main part, nozzle main part fixedly arranged at the bottom of water guide frame body, the inside fixed setting of water guide frame body has the laser incidence ring, the bottom fixed setting of laser incidence ring has the coupling through block, the inside of nozzle main part has the steady flow channel and the water outlet channel in proper order along the axial direction, the surface of coupling through block is provided with a plurality of water inlet through -hole that communicates with laser incidence ring, the lower surface of nozzle main part is provided with the thread groove, and the inside screw thread connection of thread groove has the thread ring. The utility model can make the water flow more accurate laser, reduce energy loss, improve the transmission efficiency of water guide laser, and the thread ring is connected with the nozzle main part through the thread groove, and the water nozzle head can be quickly disassembled and replaced, and can adapt to the water flow form of different processing scenes.

Description

Technical Field

[0001] This utility model relates to the field of water-guided laser processing technology, and more specifically, to a nozzle structure for water-guided lasers. Background Technology

[0002] Water-guided laser processing technology is an advanced technology that uses high-pressure water flow as the transmission medium for laser, precisely delivering laser energy to the surface of the workpiece to achieve processing operations such as cutting and drilling. In this technology system, the nozzle serves as the jetting component of the high-pressure water flow and the coupling channel for the laser. Its structural design directly determines the stability of the water flow, the transmission efficiency of the laser, and the final processing accuracy.

[0003] In existing technologies, the connection between laser nozzles and optical modules is mostly achieved through screw fastening, snap-fitting, clamping, etc. These methods have problems such as assembly errors or poor assembly consistency caused by nozzle replacement, which can lead to changes in the positional relationship between the laser focus and the sapphire nozzle, greatly affecting nozzle life and processing accuracy. A search revealed that Chinese patent CN222199237U discloses a water-guided laser nozzle. This mechanism achieves radial pre-positioning through the precise fit of the shaft and hole structures. Furthermore, the magnetic fasteners provide a constant axial attraction force, and the force remains unchanged after disassembly and assembly, ensuring that the laser focus is always in the predetermined position after each replacement, maintaining the balance between the coupling factor and the focal point. Secondly, the annular clamp structure, in conjunction with the third fastener, allows for quick disconnection or fixation by simply tightening or loosening the bolts during disassembly and assembly. The nozzle kit is equipped with quick connectors for high-pressure water and auxiliary gas, eliminating the need for repeated disassembly of pipelines and shortening replacement time.

[0004] However, in actual use, when water flows inside the nozzle, the internal channel structure is cylindrical, which easily generates eddies or turbulence, making it difficult to achieve precise envelopment of the laser by the water flow, which can easily cause laser energy loss and reduce transmission efficiency. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a nozzle structure for water-guided lasers to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A nozzle structure for a water-guided laser includes a water-guided frame body and a nozzle body disposed at the bottom of a focusing lens assembly. The nozzle body is fixedly disposed at the bottom of the water-guided frame body. A laser incident ring is fixedly disposed inside the water-guided frame body. A coupling block is fixedly disposed at the bottom of the laser incident ring. The nozzle body has a flow stabilizing channel and a water outlet channel sequentially opened along the axial direction inside. The coupling block has multiple water inlet holes that communicate with the laser incident ring on its surface. The lower surface of the nozzle body has a threaded groove. A threaded ring is threadedly connected inside the threaded groove. A water spray nozzle is fixedly installed at one end of the threaded ring.

[0007] By adopting the above technical solution: the laser incident ring and the coupling block work together, combined with the design of the water inlet hole, the water flow can more accurately wrap the laser, reduce energy loss, improve the transmission efficiency of the water-guided laser, and the threaded ring and the nozzle body are connected by a threaded groove, which facilitates quick disassembly and replacement of the water nozzle head, and can adapt to the needs of different processing scenarios for water flow patterns and sizes, reducing maintenance costs.

[0008] As a further description of the above technical solution: the laser incident ring, coupling block, flow stabilizing channel and water outlet channel are coaxially arranged, the water guide frame body has a cavity inside, and the inner diameter of the inner cavity of the coupling block gradually decreases from the end near the laser incident ring to the end near the flow stabilizing channel, forming a funnel-shaped structure; An upper sealing protrusion is fixedly provided on the outer wall of the nozzle body near the water spray nozzle head, and a lower sealing recess is fixedly provided on the outer wall of the water spray nozzle head near the nozzle body. The upper sealing protrusion and the lower sealing recess are inserted into each other.

[0009] By adopting the above technical solution, through coaxial design and optimized sealing structure, the laser coupling effect and structural sealing performance are further improved, ensuring the stable operation of the water-guided laser.

[0010] As a further description of the above technical solution: a sealing groove is provided on the lower surface of the water guide frame body, and a dustproof sealing gasket is fixedly installed inside the sealing groove. The dustproof sealing gasket is located on the top of the upper sealing protrusion of the nozzle body. The inner diameter of the nozzle gradually decreases from the inlet end to the outlet end, forming a conical spray structure.

[0011] By adopting the above technical solution, the dustproof sealing and water jet performance of the device are further improved through the dual sealing design and conical jet structure, ensuring the processing effect of water-guided laser.

[0012] The technical effects and advantages of this utility model are as follows: This invention features a coupling block designed as a single-ended tapering funnel, coupled with coaxially arranged components such as a laser incident ring and a flow stabilizing channel, enabling precise convergence and acceleration of water flow, thus enhancing the coupling efficiency between the laser and water flow. Secondly, the water nozzle employs a conical spray structure to achieve secondary acceleration of the water flow and secondary focusing of the laser, significantly improving processing accuracy. Furthermore, the invention utilizes a double-sealing structure with a lower sealing concave frame, an upper sealing convex strip, a dustproof sealing gasket, and a sealing groove, combined with threaded connection positioning, greatly improving sealing reliability, effectively preventing impurities from entering, and ensuring channel cleanliness. In addition, the water flow also serves as a cooling and slag removal function, balancing processing quality and efficiency. The overall structure is compact and easy to maintain. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the overall front view of the present invention.

[0015] Figure 3 This is a schematic diagram of the overall side cross-sectional structure of this utility model.

[0016] Figure 4 This is a schematic diagram of the overall frontal cross-sectional structure of this utility model.

[0017] Figure 5 This is a schematic diagram showing the overall frontal cross-sectional details of this utility model.

[0018] The attached diagram is labeled as follows: 1. Water guide frame body; 2. Nozzle body; 3. Laser incident ring; 4. Coupling block; 5. Flow stabilizing channel; 6. Water outlet channel; 7. Water inlet hole; 8. Threaded groove; 9. Threaded ring; 10. Water spray nozzle; 11. Upper sealing protrusion; 12. Lower sealing recess; 13. Sealing groove; 14. Dustproof sealing gasket. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] The embodiments disclosed in this application are as follows: Figure 1-5 The nozzle structure shown includes a water guide frame body 1 and a nozzle body 2 disposed at the bottom of the focusing lens assembly. The nozzle body 2 is fixedly disposed at the bottom of the water guide frame body 1. A laser incident ring 3 is fixedly disposed inside the water guide frame body 1. A coupling block 4 is fixedly disposed at the bottom of the laser incident ring 3. The nozzle body 2 has a flow stabilizing channel 5 and a water outlet channel 6 sequentially opened along the axial direction inside. The coupling block 4 has multiple water inlet holes 7 that communicate with the laser incident ring 3 on its surface. The lower surface of the nozzle body 2 has a threaded groove 8. The threaded groove 8 is threadedly connected to a threaded ring 9. One end of the threaded ring 9 is fixedly provided with a water spray nozzle 10. When the high-pressure water supply equipment is turned on, high-pressure water is injected into the interior through a high-pressure water pipe that runs through one end of the water guide frame body 1. Then it flows to multiple water inlet holes 7 on the surface of the coupling block 4. The water inlet holes 7 are connected to the laser incident ring 3. After the high-pressure water is diverted through the water inlet holes 7, it enters the cavity formed by the laser incident ring 3 and the coupling block 4. During this process, it makes initial contact with the laser that is subsequently incident. At the same time, with the help of the funnel-shaped structure of the coupling block 4, which gradually decreases in diameter from one end to the other, the water flow initially converges and accelerates, preparing for efficient coupling with the laser in the future. The high-pressure water that has been gathered enters the flow stabilizing channel 5 inside the nozzle body 2. The flow stabilizing channel 5 is set along the axial direction, which can effectively eliminate eddies and fluctuations in the water flow and make the water flow form a uniform and stable columnar flow. Then the stable water flow enters the water outlet channel 6 for further acceleration, providing power for jetting. The laser beam generated by the external laser generator is focused by the focusing lens group at the top of the water guide frame body 1 and then vertically incident on the laser incident ring 3 inside the water guide frame body 1. The laser incident ring 3 provides precise incident guidance for the laser, ensuring that the laser propagates along the axial direction. After passing through the laser incident ring 3, the laser enters the funnel-shaped chamber of the coupling block 4. At this time, the high-pressure water flow is entering the chamber from the water inlet hole 7 and converging and accelerating. Since the laser incident ring 3, the coupling block 4, the flow stabilizing channel 5 and the water outlet channel 6 are coaxially arranged, and the water guide frame body 1 has a cavity inside, the laser can be accurately injected into the converging water flow. With the help of the difference in refractive index between water and air, the laser is confined inside the water flow and forms total reflection, realizing the efficient coupling of the laser and the water flow.

[0021] Reference Figure 2-3 As shown, the laser incident ring 3, coupling block 4, flow stabilizing channel 5 and water outlet channel 6 are coaxially arranged. The water guide frame body 1 has a cavity inside. The inner diameter of the cavity of the coupling block 4 gradually decreases from the end near the laser incident ring 3 to the end near the flow stabilizing channel 5, forming a funnel-shaped structure. An upper sealing protrusion 11 is fixedly provided on the outer wall of the nozzle body 2 near the water nozzle head 10, and a lower sealing recess 12 is fixedly provided on the outer wall of the water nozzle head 10 near the nozzle body 2. The upper sealing protrusion 11 and the lower sealing recess 12 are inserted into each other. The threaded ring 9 with the water nozzle 10 is threaded and fixed through the threaded groove 8 on the surface of the nozzle body 2. During the process, it is ensured that the inlet of the water nozzle 10 is precisely aligned with the water outlet channel 6 of the nozzle body 2. At the same time, the lower sealing recess 12 on the surface of the water nozzle 10 is inserted and matched with the upper sealing protrusion 11 on the surface of the nozzle body 2 to form the first sealing line. Moreover, the dustproof sealing gasket 14 is set in the sealing groove 13 on the surface of the water guide frame body 1 to achieve the second sealing, preventing impurities from entering the internal channel during the processing and affecting the accuracy.

[0022] Reference Figure 4-5 As shown, a sealing groove 13 is provided on the lower surface of the water guide frame body 1, and a dustproof sealing gasket 14 is fixedly installed inside the sealing groove 13. The dustproof sealing gasket 14 is located on the top of the upper sealing protrusion 11 of the nozzle body 2. The inner diameter of the nozzle 10 gradually decreases from the inlet end to the outlet end, forming a conical spray structure; After the equipment has been completely shut down, the threaded ring 9 and the water nozzle 10 can be disassembled through the threaded groove 8 to clean the residual waste residue at the outlet and internal channel of the water nozzle 10. At the same time, the integrity of sealing components such as the upper sealing convex strip 11 and the lower sealing concave frame 12 can be checked to ensure the sealing effect during the next operation. Moreover, the threaded ring 9 is connected to the nozzle body 1 through the threaded groove, which facilitates quick disassembly and replacement of the water nozzle 10. It can adapt to the needs of different processing scenarios for water flow patterns and sizes, and reduce maintenance costs.

[0023] Working principle of this utility model: This utility model is a nozzle structure for water-guided lasers. When in use, the threaded ring 9 with the water nozzle 10 is threaded and fixed through the threaded groove 8 on the surface of the nozzle body 2. During the process, it is ensured that the inlet of the water nozzle 10 is precisely aligned with the water outlet channel 6 of the nozzle body 2. At the same time, the lower sealing concave frame 12 on the surface of the water nozzle 10 is inserted and matched with the upper sealing protrusion 11 on the surface of the nozzle body 2 to form the first sealing line. Moreover, the dustproof sealing gasket 14 is set in the sealing groove 13 on the surface of the water guide frame body 1 to achieve the second sealing, preventing impurities from entering the internal channel during the processing and affecting the accuracy. When the high-pressure water supply equipment is turned on, high-pressure water is injected into the interior through a high-pressure water pipe that runs through one end of the water guide frame body 1. Then it flows to multiple water inlet holes 7 on the surface of the coupling block 4. The water inlet holes 7 are connected to the laser incident ring 3. After the high-pressure water is diverted through the water inlet holes 7, it enters the cavity formed by the laser incident ring 3 and the coupling block 4. During this process, it makes initial contact with the laser that is subsequently incident. At the same time, with the help of the funnel-shaped structure of the coupling block 4, which gradually decreases in diameter from one end to the other, the water flow initially converges and accelerates, preparing for efficient coupling with the laser in the future. The high-pressure water that has been gathered enters the flow stabilizing channel 5 inside the nozzle body 2. The flow stabilizing channel 5 is set along the axial direction, which can effectively eliminate eddies and fluctuations in the water flow and make the water flow form a uniform and stable columnar flow. Then the stable water flow enters the water outlet channel 6 for further acceleration, providing power for jetting. The laser beam generated by the external laser generator is focused by the focusing lens group at the top of the water guide frame body 1 and then vertically incident on the laser incident ring 3 inside the water guide frame body 1. The laser incident ring 3 provides precise incident guidance for the laser, ensuring that the laser propagates along the axial direction. After passing through the laser incident ring 3, the laser enters the funnel-shaped chamber of the coupling block 4. At this time, the high-pressure water flow is entering the chamber from the water inlet 7 and converging and accelerating. Since the laser incident ring 3, the coupling block 4, the flow stabilizing channel 5 and the water outlet channel 6 are coaxially arranged, and the water guide frame body 1 has a cavity inside, the laser can be accurately injected into the converging water flow. By taking advantage of the difference in refractive index between water and air, the laser is confined inside the water flow and forms total reflection, thus achieving efficient coupling between the laser and the water flow. High-pressure water carrying a laser enters the nozzle 10 through the outlet channel 6. The nozzle 10 adopts a conical spray structure that gradually decreases in size from the inlet to the outlet. During this process, the water flow is further compressed and accelerated, while the internal laser beam is further focused, improving processing accuracy. The high-speed, high-pressure water-guided laser beam is ejected from the outlet of the nozzle 10, directly acting on the surface of the workpiece to be processed. The laser energy is precisely transferred to the processing area through the water flow carrier, realizing processing operations such as material cutting and drilling. The water flow also cools the processing area and washes away processing waste, improving processing quality and efficiency. After the equipment has been completely shut down, the threaded ring 9 and the water nozzle 10 can be disassembled through the threaded groove 8 to clean the residual waste residue at the outlet and internal channel of the water nozzle 10. At the same time, the integrity of sealing components such as the upper sealing convex strip 11 and the lower sealing concave frame 12 can be checked to ensure the sealing effect during the next operation. Moreover, the threaded ring 9 is connected to the nozzle body 1 through the threaded groove, which facilitates quick disassembly and replacement of the water nozzle 10. It can adapt to the needs of different processing scenarios for water flow patterns and sizes, and reduce maintenance costs.

[0024] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A nozzle structure for a water-guided laser, comprising a water-guided frame body (1) and a nozzle body (2) disposed at the bottom of a focusing lens assembly, characterized in that: The nozzle body (2) is fixedly installed at the bottom of the water guide frame body (1), and a laser incident ring (3) is fixedly installed inside the water guide frame body (1). A coupling block (4) is fixedly installed at the bottom of the laser incident ring (3). The nozzle body (2) has a flow stabilizing channel (5) and a water outlet channel (6) sequentially opened along the axial direction inside. The coupling block (4) has multiple water inlet holes (7) connected to the laser incident ring (3) on its surface. The lower surface of the nozzle body (2) has a threaded groove (8). The threaded groove (8) is threaded with a threaded ring (9). One end of the threaded ring (9) is fixedly provided with a water spray nozzle (10).

2. The nozzle structure for water-guided lasers according to claim 1, characterized in that: The laser incident ring (3), coupling block (4), flow stabilizing channel (5) and water outlet channel (6) are coaxially arranged. The water guide frame body (1) has a cavity inside. The inner diameter of the cavity of the coupling block (4) gradually decreases from the end near the laser incident ring (3) to the end near the flow stabilizing channel (5), forming a funnel-shaped structure.

3. The nozzle structure for water-guided lasers according to claim 1, characterized in that: An upper sealing protrusion (11) is fixedly provided on the outer wall of the nozzle body (2) near the water nozzle head (10), and a lower sealing recess (12) is fixedly provided on the outer wall of the water nozzle head (10) near the nozzle body (2). The upper sealing protrusion (11) and the lower sealing recess (12) are inserted into each other.

4. The nozzle structure for water-guided lasers according to claim 3, characterized in that: A sealing groove (13) is provided on the lower surface of the water guide frame body (1), and a dustproof sealing gasket (14) is fixedly provided inside the sealing groove (13). The dustproof sealing gasket (14) is located on the top of the upper sealing protrusion (11) of the nozzle body (2).

5. The nozzle structure for water-guided lasers according to claim 1, characterized in that: The inner diameter of the nozzle (10) gradually decreases from the inlet end to the outlet end, forming a conical spray structure.

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