Water-jet guided laser coupling device

Abstract

The invention relates to the technical field of water-guided laser, and discloses a water-guided laser coupling device, and the device comprises a base which is internally provided with a water inlet channel and an annular flow channel, and the water inlet channel is communicated with the annular flow channel; the light-transmitting assembly is provided with a light-transmitting window, the light-transmitting window is embedded in the base, and the light-transmitting window is used for allowing laser to penetrate through; the supporting column is arranged in the base, a water outlet channel is formed in the supporting column, a nozzle piece is arranged at the top of the supporting column, and a nozzle opening of the nozzle piece is communicated with the water outlet channel and right faces the light inlet window; and the rectifying net is arranged between the light inlet window and the nozzle piece, a water passing gap exists between the rectifying net and the light inlet window, and the water passing gap communicates with the annular flow channel. The water flow is broken into small-scale vortexes when flowing through the rectification net from the water passing gap, the small-scale vortexes are gradually dissipated under the action of viscous dissipation, the turbulence of the water flow is further reduced, disturbance in the water flow is reduced, and the effective working range and the machining precision of the water-guided laser are improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of water-guided lasers, and in particular to a water-guided laser coupling device. Background Art

[0002] Water-Guided Laser (WGL) is a composite processing technology that combines a high-energy laser beam with a high-speed, fine water jet. It is widely used in micro-nano processing, superhard material cutting, semiconductor manufacturing, and high-precision machining. Its core principle is to use a high-speed water jet as an optical waveguide. Under the premise of satisfying total internal reflection, it enables low-loss transmission of the laser light within the water jet, thereby maintaining the laser's high energy density and excellent directionality. Compared with traditional laser processing, WGL has significant advantages. The water jet can effectively remove molten material, avoiding surface deposition. It can also instantly cool the processing area, reducing the heat-affected zone and preventing damage such as cracks caused by thermal stress. Furthermore, it eliminates the need for frequent focus adjustments, improving processing efficiency and precision.

[0003] The key component of a water-guided laser is the water-guided laser coupling device. The water jet ejected from the water-guided laser coupling device forms a stable optical waveguide structure and guides the laser light into the water jet. When the laser incident angle is less than the critical angle for total internal reflection (the angle at which total internal reflection occurs), the laser beam is transmitted within the water jet by total internal reflection. This maintains the laser's high energy density and low divergence angle, while avoiding the tedious prioritization of focus required in traditional laser processing.

[0004] As a waveguide medium for laser transmission, the length of the stable section of the water jet directly determines the effective processing distance of the water-guided laser. The stability of the water jet is affected by many factors, including surface tension, inertial force, viscous shear stress, and initial disturbances. Among them, the initial disturbance mainly comes from the instability of the flow state inside the cavity. In particular, the presence of turbulence will significantly aggravate the initial disturbance of the water jet, shorten its stable section length, and thus limit the effective processing range of the water-guided laser. Therefore, how to build a more stable and low-turbulence flow environment inside the water-guided laser coupling device has become the key to improving the stability of the water jet. Although existing technologies improve water flow stability by optimizing the number and distribution of flow channels, there are still obvious deficiencies in suppressing large-scale eddies. Although the multi-channel structure helps to evenly distribute the water flow, due to the lack of effective turbulence suppression methods, it cannot fundamentally eliminate the disturbance caused by turbulence, resulting in a limited length of the stable section of the water jet. Summary of the Invention

[0005] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical elements or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0006] The embodiments of the present disclosure provide a water-guided laser coupling device, which can reduce the turbulence of water flow, thereby reducing disturbances in the water flow and increasing the length of the stable section of the water jet.

[0007] The water-guided laser coupling device of the embodiment of the present disclosure includes:

[0008] The base is provided with a water inlet channel and an annular flow channel, and the water inlet channel is connected with the annular flow channel;

[0009] A light-transmitting component is provided with a light-transmitting window and the light-transmitting window is embedded in the base, and the light-transmitting window is used for allowing the laser to pass through;

[0010] A support column is provided inside the base, a water outlet channel is provided inside the support column, a nozzle member is provided on the top of the support column, a nozzle of the nozzle member is connected to the water outlet channel and faces the light-transmitting window;

[0011] The rectifying net is arranged between the light-transmitting window and the nozzle member, and a water-passing gap exists between the rectifying net and the light-transmitting window, and the water-passing gap is communicated with the annular flow channel.

[0012] In some embodiments, the base includes a first base and a second base, and the first base is buckled into the second base; a first accommodating cavity is provided inside the first base, and a water inlet channel, an annular flow channel and a second accommodating cavity are provided inside the second base, the top of the light-transmitting component and the support column are both located inside the first accommodating cavity, and the rest of the support column is located inside the second accommodating cavity.

[0013] In some embodiments, the light-transmitting assembly includes a pressing block and a light-transmitting window;

[0014] The side wall of the first accommodating cavity is provided with a circle of supporting flanges, the edge portion of the light-transmitting window is in contact with the supporting flanges, and the pressing block is provided with a light-transmitting hole, and the light-transmitting hole of the pressing block is directly facing the light-transmitting window;

[0015] The pressing block is fixedly connected to the side wall of the first accommodating cavity and presses and fixes the light-transmitting window to the supporting flange.

[0016] In some embodiments, the outer periphery of the pressing block is threadedly connected to the side wall of the first accommodating cavity, and the light-transmitting hole of the pressing block is a non-circular hole.

[0017] In some embodiments, the second accommodating cavity includes a flow channel space located at the top of the second base body, an axial hole adapted to the side wall of the support column, the flow channel space is provided with a plurality of flow channel walls, and the plurality of flow channel walls are spaced apart and arranged circumferentially around the support column;

[0018] The space between the flow channel wall and the side wall of the flow channel space, the space between adjacent flow channel walls, and the space between the flow channel wall and the side wall of the support column together constitute an annular flow channel.

[0019] In some embodiments, the plurality of flow channel walls are divided into a first group of flow channel walls and a second group of flow channel walls;

[0020] A plurality of flow channel walls in the first group of flow channel walls are spaced apart along a first circumference around the support column, and a plurality of flow channel walls in the second group of flow channel walls are spaced apart along a second circumference around the support column;

[0021] The center of the first circle and the center of the second circle are both located on the central axis of the support column, and the diameter of the second circle is larger than the diameter of the first circle;

[0022] The circumferential gaps between the flow channel walls in the first group of flow channel walls are arranged alternately with the circumferential gaps between the flow channel walls in the second group of flow channel walls.

[0023] In some embodiments, the first base is provided with a first bolt through hole, and the first bolt through hole runs from the top to the bottom of the first base;

[0024] A first threaded hole corresponding to the first bolt through hole is provided on the top of the second base body, and the first base body and the second base body are connected by bolts provided in the first bolt through hole and the first threaded hole.

[0025] In some embodiments, the base further includes a connecting member, and the side wall of the first base and the side wall of the second base are both connected to the connecting member.

[0026] In some embodiments, the water-guided laser coupling device also includes a support bracket, which is provided with a receiving groove running through its body; the support bracket is arranged at the top of the support column, the receiving groove of the support bracket is connected to the water outlet channel, and the nozzle member is embedded in the receiving groove of the support bracket.

[0027] In some embodiments, a card block is provided on the edge of the rectifying net, and a card slot is provided on the top edge of the support column; the rectifying net is arranged on the top of the support bracket and is opposite to the water inlet end of the nozzle part, and the card block of the rectifying net is embedded in the card slot on the top edge of the support column.

[0028] The water-guided laser coupling device provided in the embodiments of the present disclosure can achieve the following technical effects:

[0029] The water-guided laser coupling device provided by the embodiment of the present disclosure is achieved by arranging a rectifying net between the light-transmitting window and the nozzle member, and forming a water-passing gap between the rectifying net and the light-transmitting window. The water-passing gap is so narrow that only a small amount of water can pass through, which reduces the turbulence of the water flow and improves the stability of the water flow. When the water flows through the rectifying net from the water-passing gap, the larger-scale vortices in the water flow are broken into smaller-scale vortices. The small-scale vortices gradually dissipate under the action of viscous dissipation, further reducing the turbulence of the water flow and reducing the disturbance in the water flow. Since the turbulence of the water flow is effectively controlled, the water jet flowing out of the nozzle member is smoother and continuous, and the length of its stable section is significantly extended, ensuring that the laser beam can maintain a stable transmission state over a longer distance, thereby improving the effective working range and processing accuracy of the water-guided laser.

[0030] The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] One or more embodiments are exemplarily described by corresponding drawings. These exemplary descriptions and drawings do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation. In addition,

[0032] Figure 1 1 is a schematic structural diagram of a water-guided laser coupling device provided by an embodiment of the present disclosure;

[0033] Figure 2 The embodiment of the present disclosure provides Figure 1 A cross-sectional view at point A;

[0034] Figure 3 is an exploded view of a water-guided laser coupling device provided by an embodiment of the present disclosure;

[0035] Figure 4 is a structural schematic diagram of a second substrate provided by an embodiment of the present disclosure;

[0036] Figure 5 This is a schematic diagram of the assembly of a second base, a support column, a nozzle member, and a support bracket provided by an embodiment of the present disclosure;

[0037] Figure 6 The embodiment of the present disclosure provides Figure 5 Structural diagram after installing the rectifier network;

[0038] Figure 7 This is a schematic diagram of the assembly of a nozzle member and a support bracket provided by an embodiment of the present disclosure;

[0039] Figure 8 is a structural schematic diagram of a support column provided by an embodiment of the present disclosure;

[0040] Figure 9 It is a structural diagram of a rectifier network provided by an embodiment of the present disclosure.

[0041] Description of Figure Numbers:

[0042] 1 base;

[0043] 101 water inlet channel, 102 annular flow channel;

[0044] 11 first base, 111 first accommodating cavity, 112 first bolt through hole;

[0045] 12 second base, 121 second accommodating cavity, 122 first threaded hole, 123 flow channel wall;

[0046] 13 connecting piece, 131 second bolt through hole, 132 water pipe connecting hole;

[0047] 103 second threaded hole;

[0048] 2 light-transmitting components;

[0049] 21 pressing block, 211 light transmission hole, 22 light transmission window;

[0050] 3 support columns;

[0051] 301 water outlet channel, 31 flange, 32 first step, 33 second step, 34 slot;

[0052] 4 rectifier net, 41 clamp block, 42 ​​hollow hole;

[0053] 5 nozzle parts, 51 nozzles;

[0054] 6 support bracket, 61 receiving slot;

[0055] 7 bracket, 71 supporting plate, 72 fixing plate;

[0056] 100 water clearance. DETAILED DESCRIPTION

[0057] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The accompanying drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0058] In the description and claims of the embodiments of the present disclosure, as well as in the accompanying drawings, the terms "first," "second," and the like are used to distinguish similar items and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate to describe the embodiments of the present disclosure herein. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0059] Unless otherwise stated, the term "plurality" means two or more.

[0060] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B means: A or B.

[0061] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0062] The term "correspondence" may refer to an association relationship or a binding relationship. The correspondence between A and B means that there is an association relationship or a binding relationship between A and B.

[0063] Combine Figures 1 to 7 As shown, an embodiment of the present disclosure provides a water-guided laser coupling device, which includes a base 1, a light-transmitting component 2, a support column 3, and a rectifying net 4. A water inlet channel 101 and an annular flow channel 102 are provided inside the base 1, and the water inlet channel 101 is connected to the annular flow channel 102. The light-transmitting component 2 is provided with a light-transmitting window and the light-transmitting window is embedded in the base 1, and the light-transmitting window is used for allowing laser light to pass through. The support column 3 is provided inside the base 1, and a water outlet channel 301 is provided inside the support column 3. A nozzle member 5 is provided on the top of the support column 3, and a nozzle 51 of the nozzle member 5 is connected to the water outlet channel 301 and faces the light-transmitting window. The rectifying net 4 is provided between the light-transmitting window and the nozzle member 5, and a water gap 100 is provided between the rectifying net 4 and the light-transmitting window, and the water gap 100 is connected to the annular flow channel 102.

[0064] External laser light can be directed toward the light-transmitting window of the light-transmitting component 2, then pass through the light-transmitting window toward the nozzle 51 of the nozzle member 5 to form a laser beam, which is then emitted through the water outlet channel 301 of the support column 3. Simultaneously, water flows from the water inlet channel 101 of the base 1 into the annular flow channel 102, then flows through the annular flow channel 102 into the water gap 100, then passes through the rectifying network 4 from the water gap 100 and flows into the nozzle 51 of the nozzle member 5 to form a water jet, which is then emitted through the water outlet channel 301 of the support column 3. At this point, the water jet in the water outlet channel 301 of the support column 3 can form a stable optical waveguide structure, guiding the laser beam into the water jet, enabling low-loss transmission of the laser beam in the water jet, thereby maintaining high energy density and good directionality of the laser beam.

[0065] The water-guided laser coupling device provided by the embodiment of the present disclosure has a rectifying net 4 disposed between the light-transmitting window and the nozzle member 5, and a water-passing gap 100 is formed between the rectifying net 4 and the light-transmitting window. The water-passing gap is so narrow that only a small amount of water can pass through, which reduces the turbulence of the water flow and improves the stability of the water flow. When the water flows through the rectifying net 4 from the water-passing gap 100, the larger-scale vortices in the water flow are broken into smaller-scale vortices. The small-scale vortices gradually dissipate under the action of viscous dissipation, further reducing the turbulence of the water flow and reducing the disturbance in the water flow. Since the turbulence of the water flow is effectively controlled, the water jet flowing out of the nozzle member 5 is smoother and more continuous, and the length of its stable section is significantly extended, ensuring that the laser beam can maintain a stable transmission state over a longer distance, thereby improving the effective working range and processing accuracy of the water-guided laser.

[0066] In some embodiments, the base 1 includes a first base 11 and a second base 12, wherein the first base 11 is snap-fitted to the second base 12. A first accommodating cavity 111 is provided within the first base 11, and a water inlet channel 101, an annular flow channel 102, and a second accommodating cavity 121 are provided within the second base 12. The tops of the light-transmitting component 2 and the support column 3 are both located within the first accommodating cavity 111, and the rest of the support column 3 is located within the second accommodating cavity 121.

[0067] In the embodiment of the present disclosure, the bottom surface of the first base 11 should be in close contact with the top surface of the second base 12 to ensure that the water gap 100 has good sealing. Optionally, the first base 11 is provided with a first bolt through hole 112, and the first bolt through hole 112 runs from the top of the first base 11 to the bottom. The top of the second base 12 is provided with a first threaded hole 122 corresponding to the first bolt through hole 112, and the first base 11 and the second base 12 are connected by bolts provided in the first bolt through hole 112 and the first threaded hole 122. Here, the number of the first bolt through hole 112 and the first threaded hole 122 can be determined according to design requirements. For example, the number of the first bolt through hole 112 and the first threaded hole 122 are both 4.

[0068] In some embodiments, the base 1 further includes a connecting member 13, and the side walls of the first base 11 and the side walls of the second base 12 are both connected to the connecting member 13. Specifically, the connecting member 13 is provided with two second bolt holes 131, and the side walls of the first base 11 and the side walls of the second base 12 are respectively provided with a second threaded hole 103. The second bolt holes 131 correspond one-to-one with the second threaded holes 103. The first base 11 and the second base 12 are connected to the connecting member 13 via bolts provided in the second bolt holes 131 and the second threaded holes 103.

[0069] In some embodiments, the connector 13 is provided with a water pipe connection hole 132, to which an external water pipe can be connected. The water pipe connection hole 132 is connected to the water inlet channel 101 of the second base 12, and the water in the water pipe flows into the water inlet channel 101 through the water pipe connection hole 132.

[0070] In some embodiments, the light-transmitting component 2 includes a pressing block 21 and a light-transmitting window 22. There is a water-passing gap 100 between the rectifying network 4 and the light-transmitting window 22, and the water-passing gap 100 is connected to the annular flow channel 102. The side wall of the first accommodating cavity 111 is provided with a circle of supporting flanges, and the edge portion of the light-transmitting window 22 is in contact with the supporting flanges. The pressing block 21 is provided with a light-transmitting hole 211, and the light-transmitting hole 211 of the pressing block 21 is directly opposite to the light-transmitting window 22. The pressing block 21 is fixedly connected to the side wall of the first accommodating cavity 111, and presses the light-transmitting window 22 to the supporting flange. Here, the edge portion of the light-transmitting window 22 is in close contact with the supporting flange to form a preliminary positioning and bearing structure. The pressing block 21 is connected to the side wall of the first accommodating cavity 111 to press the light-transmitting window 22 onto the supporting flange to form a stable and reliable sealing structure. External laser light can pass through the light-transmitting hole 211 of the pressing block 21 toward the light-transmitting window 22 , and then pass through the light-transmitting window 22 , continue to pass through the water gap 100 , and then be emitted toward the nozzle 51 of the nozzle member 5 .

[0071] In some embodiments, the outer periphery of the pressing block 21 is threadedly connected to the sidewall of the first accommodating cavity 111, and the light-transmitting hole 211 on the pressing block 21 is designed to have a non-circular structure. This non-circular light-transmitting hole 211 can form a mating engagement with the end of a dedicated tightening tool, facilitating screwing the pressing block 21 into the first accommodating cavity 111 using the tool, thereby achieving a threaded engagement between the pressing block 21 and the sidewall, while also firmly pressing the light-transmitting window 22 against the supporting flange.

[0072] In some embodiments, the second accommodating cavity 121 includes a flow channel space located at the top of the second base 12 and an axial hole adapted to the side wall of the support column 3. The flow channel space is provided with a plurality of flow channel walls 123, which are spaced circumferentially around the support column 3. The space between the flow channel walls 123 and the side walls of the flow channel space, the space between adjacent flow channel walls 123, and the space between the flow channel walls 123 and the side walls of the support column 3 together constitute the annular flow channel 102. By providing a plurality of flow channel walls 123 spaced circumferentially around the support column 3 in the flow channel space, the water flow can be more evenly distributed around the support column 3. This not only helps to improve the overall fluidity of the water flow, but also ensures that the water flow enters the nozzle member 5 at an optimal angle, thereby enhancing the quality of the water jet.

[0073] In some embodiments, the plurality of flow channel walls 123 are divided into a first group of flow channel walls 123 and a second group of flow channel walls 123. The plurality of flow channel walls 123 in the first group of flow channel walls 123 are spaced apart around the support column 3 along a first circumference, and the plurality of flow channel walls 123 in the second group of flow channel walls 123 are spaced apart around the support column 3 along a second circumference. The center of the first circumference and the center of the second circumference are both located on the central axis of the support column 3, and the diameter of the second circumference is larger than the diameter of the first circumference. The circumferential gaps between the flow channel walls 123 in the first group of flow channel walls 123 are staggered with the circumferential gaps between the flow channel walls 123 in the second group of flow channel walls 123. The first circumference and the second circumference are virtual reference circles, the centers of which coincide with the central axis of the support column 3, and are used to define the circumferential distribution positions and arrangements of the two groups of flow channel walls 123.

[0074] By setting two groups of flow channel walls 123, three layers of annular flow channels 102 can be formed. Specifically, a first layer of annular flow channel 102 is formed between the second group of flow channel walls 123 and the side walls of the flow channel space, a second layer of annular flow channel 102 is formed between the first group of flow channel walls 123 and the second group of flow channel walls 123, and a third layer of annular flow channel 102 is formed between the second group of flow channel walls 123 and the side walls of the support column 3. The first layer of annular flow channel 102 is connected to the water inlet channel 101 and is responsible for receiving water flow from the outside. The second layer of annular flow channel 102 is located between the first and second groups of flow channel walls 123 and is used to further rectify, buffer and redistribute the water flow. The third layer of annular flow channel 102 is connected to the water gap 100, and finally guides the water flow to the water gap 100, and enters the nozzle part 5 after passing through the rectifying net 4. By staggering the circumferential gaps between the flow channel walls 123 in the first group of flow channel walls 123 and the circumferential gaps between the flow channel walls 123 in the second group of flow channel walls 123 , vortices in the water flow can be effectively broken up, which helps to effectively guide the water flow to form a uniform and stable laminar flow state.

[0075] In some embodiments, the outer surface of the support column 3 is provided with threads, the side wall of the second accommodating cavity 121 of the second base 12 is provided with threads, and the support column 3 is connected to the side wall of the second accommodating cavity 121 of the second base 12 through threads.

[0076] In some embodiments, a non-circular flange 31 is provided on the outer periphery of the bottom of the support column 3. The flange 31 provides a force point for the support column 3 and can be mated with the end of a dedicated tightening tool to facilitate screwing the support column 3 into the second accommodating cavity 121 using the tool, thereby threading the support column 3 to the sidewall of the second accommodating cavity 121 of the second base body 12.

[0077] In some embodiments, the water-guided laser coupling device further includes a support bracket 6, which is provided with a receiving groove 6 extending through its body. The receiving groove 61 is generally trumpet-shaped. The support bracket 6 is disposed on top of the support column 3. The receiving groove 61 of the support bracket 6 is connected to the water outlet channel 301, and the nozzle member 5 is embedded in the receiving groove 61 of the support bracket 6. The support bracket 6 provides a stable and precisely positioned mounting platform for the nozzle. Once the nozzle member 5 is embedded in the receiving groove 61, it can achieve good axial alignment and circumferential fixation, avoiding unstable water flow direction due to deviation or loosening, thereby ensuring that the formed water jet has good linearity and consistency.

[0078] In some embodiments, combined Figure 8 and Figure 9 As shown, the edge of the rectifying net 4 is provided with a block 41, and the top edge of the support column 3 is provided with a slot 34. The rectifying net 4 is arranged on the top of the support bracket 6 and directly opposite the water inlet end of the nozzle member 5. The block 41 of the rectifying net 4 is embedded in the slot 34 on the top edge of the support bracket 6. Optionally, the overall contour of the rectifying net 4 is generally circular, and a plurality of blocks 41 are provided at intervals along the circumference of the edge of the rectifying net 4.

[0079] In some embodiments, the rectifying net 4 is a sheet-like member having a plurality of hollow holes 42. Water in the water gap 100 flows through the hollow holes 42 of the rectifying net 4 and into the nozzle 51 of the nozzle member 5, thereby forming a water jet. The shape of the hollow holes 42 can be determined according to actual design requirements, such as hexagonal, square, circular, triangular, etc.

[0080] In the disclosed embodiment, a hollow hole 42 in the rectifying net 4 faces the nozzle 51 of the nozzle member 5. After passing through the light-transmitting window 22, the laser beam continues to pass through the water-passing gap 100 and the hollow hole 42 facing the nozzle 51 of the nozzle member 5, and is emitted toward the nozzle 51 of the nozzle member 5.

[0081] In some embodiments, the water outlet channel 301 of the support column 3 is provided with a stepped structure, comprising, from top to bottom, a first step 32 and a second step 33. The first step 32 is located near the top of the support column 3, and a slot 34 is provided at the edge of the first step 32. The rectifier screen 4 is provided on the first step 32, with its blocks 41 embedded in the slots 34 at the edge of the first step 32. The rectifier screen 4 is flush with the top surface of the support column 3. The support bracket 6 is provided on the second step 33.

[0082] In the embodiment of the present disclosure, when the first substrate 11 and the second substrate 12 are assembled together, the rectifying net 4 and the light-transmitting window 22 are not in direct contact, but maintain a certain distance therebetween, thereby forming a water-passing gap 100 between the rectifying net 4 and the light-transmitting window 22 .

[0083] In some embodiments, the water-guided laser coupling device further includes a bracket 7, and the bottom of the second base 12 is connected to the bracket 7. Optionally, the bracket 7 includes a supporting plate 71 and a fixing plate 72. The bottom of the second base 12 is connected to the supporting plate 71 via bolts, and the fixing plate 72 is used to connect to components outside the water-guided laser coupling device.

[0084] In some embodiments, the nozzle 51 of the nozzle member 5 is a channel structure with a rectangular upper portion and a trapezoidal lower portion. This channel arrangement effectively prevents the nozzle 51 of the nozzle member 5 from interfering with the water jet, thereby improving the stability of the water jet.

[0085] In some embodiments, the nozzle member 5 can be made of sapphire material, and the support bracket 6 can be made of copper material. Of course, in other embodiments, the nozzle member 5 and the support bracket 6 can also be made of other suitable materials.

[0086] In some embodiments, the water-guided laser coupling device may include multiple sealing rings. Sealing rings may be provided between some of the contacting components of the water-guided laser coupling device to ensure the sealing of the water-guided laser coupling device. For example, a sealing ring may be provided between the first substrate 11 and the second substrate 12, between the pressing block 21 and the sidewall of the first accommodating cavity 111 of the first substrate 11, between the pressing block 21 and the light-transmitting window 22, between the light-transmitting window 22 and the support flange, between the support column 3 and the sidewall of the second accommodating cavity 121, and between the bottom of the second substrate 12 and the bracket 7.

[0087] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless expressly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A water-guided laser coupling device, characterized in that: include: The base is provided with a water inlet channel and an annular flow channel, and the water inlet channel is connected with the annular flow channel; A light-transmitting component is provided with a light-transmitting window and the light-transmitting window is embedded in the base, and the light-transmitting window is used for allowing the laser to pass through; A support column is provided inside the base, a water outlet channel is provided inside the support column, a nozzle member is provided on the top of the support column, a nozzle of the nozzle member is connected to the water outlet channel and faces the light-transmitting window; The rectifying net is arranged between the light-transmitting window and the nozzle member, and a water-passing gap exists between the rectifying net and the light-transmitting window, and the water-passing gap is communicated with the annular flow channel.

2. The water-guided laser coupling device according to claim 1, characterized in that: The base includes a first base and a second base, and the first base is buckled with the second base; A first accommodating cavity is set inside the first base, and a water inlet channel, an annular flow channel and a second accommodating cavity are set inside the second base. The top of the light-transmitting component and the support column are both located inside the first accommodating cavity, and the rest of the support column is located inside the second accommodating cavity.

3. The water-guided laser coupling device according to claim 2, characterized in that: The light-transmitting component includes a pressing block and a light-transmitting window; The side wall of the first accommodating cavity is provided with a circle of supporting flanges, the edge portion of the light-transmitting window is in contact with the supporting flanges, and the pressing block is provided with a light-transmitting hole, and the light-transmitting hole of the pressing block is directly facing the light-transmitting window; The pressing block is fixedly connected to the side wall of the first accommodating cavity and presses and fixes the light-transmitting window to the supporting flange.

4. The water-guided laser coupling device according to claim 3, characterized in that: The outer periphery of the pressing block is threadedly connected to the side wall of the first accommodating cavity, and the light-transmitting hole of the pressing block is a non-circular hole.

5. The water-guided laser coupling device according to claim 2, characterized in that: The second accommodating cavity includes a flow channel space located at the top of the second base body and an axial hole adapted to the side wall of the support column. The flow channel space is provided with a plurality of flow channel walls, and the plurality of flow channel walls are spaced apart and arranged circumferentially around the support column. The space between the flow channel wall and the side wall of the flow channel space, the space between adjacent flow channel walls, and the space between the flow channel wall and the side wall of the support column together constitute an annular flow channel.

6. The water-guided laser coupling device according to claim 5, characterized in that: The plurality of flow channel walls are divided into a first group of flow channel walls and a second group of flow channel walls; A plurality of flow channel walls in the first group of flow channel walls are spaced apart along a first circumference around the support column, and a plurality of flow channel walls in the second group of flow channel walls are spaced apart along a second circumference around the support column; The center of the first circle and the center of the second circle are both located on the central axis of the support column, and the diameter of the second circle is larger than the diameter of the first circle; The circumferential gaps between the flow channel walls in the first group of flow channel walls are arranged alternately with the circumferential gaps between the flow channel walls in the second group of flow channel walls.

7. The water-guided laser coupling device according to claim 2, characterized in that: The first base body is provided with a first bolt through hole, and the first bolt through hole runs through from the top to the bottom of the first base body; A first threaded hole corresponding to the first bolt through hole is provided on the top of the second base body, and the first base body and the second base body are connected by bolts provided in the first bolt through hole and the first threaded hole.

8. The water-guided laser coupling device according to claim 2, characterized in that: The base further includes a connecting piece, and the side wall of the first base body and the side wall of the second base body are both connected to the connecting piece.

9. The water-guided laser coupling device according to any one of claims 1 to 8, characterized in that: Also included is a support bracket, which is provided with a receiving slot running through its body; The support bracket is arranged on the top of the support column, the receiving groove of the support bracket is communicated with the water outlet channel, and the nozzle piece is embedded in the receiving groove of the support bracket.

10. The water-guided laser coupling device according to any one of claims 1 to 8, characterized in that: The edge of the rectifier grid is provided with a card block, and the top edge of the support column is provided with a card slot; The rectifying net is arranged on the top of the support bracket and is directly opposite to the water inlet end of the nozzle component. The clamping block of the rectifying net is embedded in the clamping groove on the top edge of the support column.

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