A water-guided laser coupling device

Abstract

The invention relates to the technical field of water-conducting laser processing equipment, and discloses a water-conducting laser coupling device, comprising: an outer shell, a high-pressure water inlet and a charged water mist inlet are provided on the side wall of the outer shell, a water flow outlet connected to the high-pressure water inlet and a water mist outlet connected to the charged water mist inlet are provided inside the outer shell, and a nozzle is provided on the water flow outlet; a circulation channel is provided in a first bracket, the circulation channel is coaxially arranged with the water mist outlet, and coaxial upper electrode rings and lower electrode rings are provided at both ends of the circulation channel respectively; a second bracket is provided in the outer shell, a laser incident chamber is formed in the second bracket, and a glass window corresponding to the laser incident chamber is provided at the bottom of the second bracket. The invention can form a stable charged water mist protective air curtain, realizes the enhancement of water jet stability and the increase of the stable length of water jet water beam optical fiber, so that the processing range of the water-conducting laser equipment is expanded and the processing quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of water-conducting laser processing equipment, in particular to a water-conducting laser coupling device. Background Art

[0002] Water-guided laser processing technology uses the basic principle of total reflection of the laser beam into the water beam fiber. Improving the stable length and stability of the water beam fiber can make the processing depth greater and the processing accuracy higher. Ensuring the stability and stable length of the water beam fiber is the basis for realizing water-guided laser processing.

[0003] At present, there are improvements on the internal structure of water-guided laser coupling devices and external equipment, such as single-coaxial gas protection air curtain, multi-coaxial gas protection air curtain and other coupling devices. When the gas leaves the airway, the protective gas speed drops rapidly and the gas divergence is serious. The existing method can only increase the gas flow rate by increasing the gas incident pressure to increase the protection distance of the water beam optical fiber. It has certain limitations and cannot effectively improve the stability of the water jet. Summary of the invention

[0004] The object of the present invention is to provide a water-guided laser coupling device, aiming to solve or improve at least one of the above-mentioned technical problems.

[0005] To achieve the above object, the present invention provides the following solution: The present invention provides a water-guided laser coupling device, comprising:

[0006] An outer shell, wherein a high-pressure water inlet and a charged water mist inlet are provided on the side wall of the outer shell, and a water flow outlet connected to the high-pressure water inlet and a water mist outlet connected to the charged water mist inlet are provided inside the outer shell, a nozzle is provided on the water flow outlet, and the water mist outlet is covered outside the water flow outlet and is coaxially arranged with the water flow outlet;

[0007] A first bracket, the first bracket is arranged below the outer shell, a circulation channel is arranged in the first bracket, the circulation channel is coaxially arranged with the water mist outlet, and coaxial upper electrode ring and lower electrode ring are arranged at both ends of the circulation channel, and the charged water mist sprayed from the water mist outlet passes through the upper electrode ring and the lower electrode ring in sequence;

[0008] The second bracket is arranged in the outer shell, a laser incident chamber is formed in the second bracket, a glass window corresponding to the laser incident chamber is arranged at the bottom of the second bracket, and the glass window is located above the nozzle.

[0009] Optionally, an inner core is provided in the outer shell, the inner core is located between the outer shell and the second bracket, a water guide channel is formed between the outer wall of the inner core and the inner wall of the outer shell, the water guide channel is connected to the high-pressure water inlet, and a plurality of water channel radial holes are opened on the circumferential side wall of the inner core, and the water channel radial holes are connected to the nozzle and the water guide channel.

[0010] Optionally, a thin water layer is formed between the nozzle and the glass window, and the thin water layer is connected to the plurality of radial holes of the water channel.

[0011] Optionally, a third bracket is disposed inside the outer shell, the water outlet is provided on the third bracket, and the nozzle is connected to the third bracket.

[0012] Optionally, the third bracket is provided with the water mist outlet, a plurality of water mist radial holes connected to the water mist outlet, and a water mist guide channel connected to the plurality of water mist radial holes, and the water mist guide channel is connected to the charged water mist inlet.

[0013] Optionally, an insulating partition is provided at the bottom of the outer shell, and the insulating partition is connected to the first bracket.

[0014] Optionally, a plurality of buckles are provided on the top of the first bracket, a plurality of clamping holes are provided on the insulating partition, and the plurality of buckles correspond to and are clamped with the plurality of clamping holes one by one.

[0015] Optionally, an annular boss is provided at the bottom end of the third bracket, the annular boss covers the water mist outlet and is coaxially arranged with the water mist outlet, a plurality of positioning piles are provided at the top end of the first bracket, the plurality of positioning piles are arranged around the outside of the annular boss and abut against the outer wall of the annular boss, and a plurality of avoidance holes are opened on the insulating partition plate for the plurality of positioning piles to pass through.

[0016] Optionally, the top surfaces of the upper electrode ring and the lower electrode ring are respectively provided with insulating rings.

[0017] Optionally, a pair of electrode interfaces corresponding to the upper electrode ring and the lower electrode ring are provided on the first bracket.

[0018] The present invention discloses the following technical effects: by installing the laser incident device in the laser incident chamber, during operation, a water source flows in through a high-pressure water inlet, and a charged water mist flows in through a charged water mist inlet, and a phenomenon of charged water mist covering a water flow is formed through the water flow outlet and the charged water mist inlet. When the charged water mist enters the flow channel in a ring-shaped manner, since the charged water mist carries a negative charge, the electric field generated by the upper electrode ring and the lower electrode ring in a vertically upward direction causes the charged water mist to be subjected to a vertically downward electric field force, and the charged water mist is accelerated by the downward electric field force to form a stable charged water mist protective air curtain, thereby achieving enhanced stability of the water jet and increased stable length of the water jet water beam optical fiber, thereby expanding the processing range of the water-guided laser device and improving the processing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0020] Figure 1 It is an assembly diagram of the present invention;

[0021] Figure 2 is a cross-sectional view of the present invention;

[0022] Figure 3 A top view of the middle and upper electrode ring of the present invention;

[0023] Figure 4 is a cross-sectional view of the middle and upper electrode ring of the present invention;

[0024] Figure 5 is a top view of the first bracket in the present invention;

[0025] Figure 6 is a front view of the first bracket in the present invention;

[0026] Figure 7 for Figure 6 A cross-sectional view of the first bracket;

[0027] Figure 8 This is the flow chart of charged water mist generation.

[0028] In the figure: 1. second bracket; 2. outer shell; 3. high-pressure water inlet; 4. water guide channel; 5. inner core; 6. water channel radial hole; 7. third bracket; 8. insulating partition; 9. water mist outlet; 10. electrode interface; 11. laser incident chamber; 12. glass window; 13. nozzle; 14. thin water layer; 15. water mist guide channel; 16. charged water mist inlet; 17. water mist radial hole; 18. upper electrode ring; 19. insulating ring; 20. first bracket; 21. lower electrode ring; 22. buckle; 23. annular boss; 24. positioning pile; 25. water flow outlet; 26. circulation channel. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Reference Figure 1-Figure 8 The present invention provides a water-guided laser coupling device, comprising:

[0032] The outer shell 2 has a high-pressure water inlet 3 and a charged water mist inlet 16 on its side wall. The outer shell 2 has a water flow outlet 25 connected to the high-pressure water inlet 3 and a water mist outlet 9 connected to the charged water mist inlet 16. The water flow outlet 25 is provided with a nozzle 13. The water mist outlet 9 is covered outside the water flow outlet 25 and is coaxially arranged with the water flow outlet 25.

[0033] A first bracket 20, the first bracket 20 is arranged below the outer shell 2, a circulation channel 26 is arranged in the first bracket 20, the circulation channel 26 is coaxially arranged with the water mist outlet 9, and coaxial upper electrode rings 18 and lower electrode rings 21 are arranged at both ends of the circulation channel 26, and the charged water mist sprayed from the water mist outlet 9 passes through the upper electrode ring 18 and the lower electrode ring 21 in sequence;

[0034] The second bracket 1 is arranged in the outer shell 2 , a laser incident chamber 11 is formed in the second bracket 1 , a glass window 12 corresponding to the laser incident chamber 11 is arranged at the bottom of the second bracket 1 , and the glass window 12 is located above the nozzle 13 .

[0035] By installing the laser incident device in the laser incident chamber 11, during operation, water flows in through the high-pressure water inlet 3, and the charged water mist flows in through the charged water mist inlet 16, and a phenomenon of charged water mist covering the water flow is formed through the water flow outlet 25 and the charged water mist inlet 16. When the charged water mist enters the flow channel 26 in a ring-shaped manner, since the charged water mist carries a negative charge, the electric field generated by the upper electrode ring 18 and the lower electrode ring 21 is directed vertically upward, so that the charged water mist is subjected to a vertically downward electric field force, and the charged water mist is accelerated by the downward electric field force to form a stable charged water mist protective air curtain, thereby enhancing the stability of the water jet and increasing the stable length of the water jet water beam optical fiber, thereby expanding the processing range of the water-guided laser equipment and improving the processing quality.

[0036] The upper electrode ring 18 is connected to the negative pole of the high-voltage electrostatic generator, and the lower electrode ring 21 is connected to the positive pole of the high-voltage electrostatic generator to form an electric field direction vertically upward.

[0037] A further optimized solution is provided in the outer shell 2. The inner core 5 is located between the outer shell 2 and the second bracket 1. A water guide channel 4 is formed between the outer wall of the inner core 5 and the inner wall of the outer shell 2. The water guide channel 4 is connected to the high-pressure water inlet 3. A plurality of water channel radial holes 6 are opened on the circumferential side wall of the inner core 5. The water channel radial holes 6 are connected to the nozzle 13 and the water guide channel 4; a thin water layer 14 is formed between the nozzle 13 and the glass window 12, and the thin water layer 14 is connected to the plurality of water channel radial holes 6.

[0038] The water guide channel 4 formed by the outer shell 2 and the inner core 5 alleviates the impact effect of the water flow, making the internal flow field more stable, and a number of evenly distributed water channel radial holes 6 are provided at the bottom of the inner core 5, so that the high-pressure water flows into the thin water layer 14 between the glass window 12 and the nozzle 13 more evenly and stably, thereby improving the stability of the water flow state inside the coupling device and solving the instability problem of the water flow state around the nozzle 13.

[0039] The number of the water channel radial holes 6 is preferably ten.

[0040] According to a further optimized solution, a third bracket 7 is provided inside the outer shell 2 , a water outlet 25 is provided on the third bracket 7 , and the nozzle 13 is connected to the third bracket 7 .

[0041] To further optimize the solution, a water mist outlet 9, a plurality of water mist radial holes 17 connected to the water mist outlet 9, and a water mist guide channel 15 connected to the plurality of water mist radial holes 17 are provided in the third bracket 7, and the water mist guide channel 15 is connected to the charged water mist inlet 16.

[0042] When the charged water mist enters the coupling device through the charged water mist inlet 16, the charged water mist first passes through the water mist guide channel 15 and then evenly enters the water mist outlet 9 through the multiple water mist radial holes 17, so that the charged water mist can be evenly sprayed vertically downward, thereby improving the stability of gas spraying.

[0043] The number of water mist radial holes 17 is preferably 6.

[0044] According to a further optimization scheme, an insulating partition 8 is provided at the bottom of the outer shell 2 , and the insulating partition 8 is connected to the first bracket 20 . The insulating partition 8 strengthens the insulation effect between the outer shell 2 and the first bracket 20 .

[0045] Four countersunk holes are formed on the insulating partition plate 8 and connected to the outer shell 2 by bolts.

[0046] According to a further optimized solution, a plurality of buckles 22 are provided on the top of the first bracket 20, a plurality of clamping holes are provided on the insulating partition 8, and the plurality of buckles 22 correspond to and are clamped with the plurality of clamping holes one by one.

[0047] A further optimized solution is that an annular boss 23 is provided at the bottom end of the third bracket 7, the annular boss 23 covers the water mist outlet 9 and is coaxially arranged with the water mist outlet 9, and a plurality of positioning piles 24 are provided at the top end of the first bracket 20. The plurality of positioning piles 24 are arranged around the outside of the annular boss 23 and abut against the outer wall of the annular boss 23, and a plurality of avoidance holes are opened on the insulating partition 8 for the plurality of positioning piles 24 to pass through.

[0048] The annular boss 23 cooperates with the plurality of positioning piles 24 to ensure the coaxiality of the flow channel 26, the water jet and the charged water mist.

[0049] According to a further optimization scheme, insulating rings 19 are respectively provided on the top surfaces of the upper electrode ring 18 and the lower electrode ring 21 to compress the upper electrode ring 18 and the lower electrode ring 21 .

[0050] As a further optimization scheme, a pair of electrode interfaces 10 corresponding to the upper electrode ring 18 and the lower electrode ring 21 are provided on the first bracket 20, and are used for connecting the upper electrode ring 18 and the lower electrode ring 21 to an external power supply device.

[0051] The second bracket 1 is provided with a plurality of evenly distributed countersunk holes for connecting with a plurality of evenly distributed threaded holes provided on the outer shell 2 by means of bolts.

[0052] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0053] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A water-guided laser coupling device, characterized in that: include: An outer shell (2), wherein a high-pressure water inlet (3) and a charged water mist inlet (16) are provided on a side wall of the outer shell (2), and a water mist outlet (9) connected to the high-pressure water inlet (3) and the charged water mist inlet (16) is provided inside the outer shell (2), wherein a nozzle (13) is provided on the water flow outlet (25), and the water mist outlet (9) is covered outside the water flow outlet (25) and is coaxially arranged with the water flow outlet (25); a first bracket (20), the first bracket (20) being arranged below the outer shell (2), a circulation channel (26) being arranged inside the first bracket (20), the circulation channel (26) being arranged coaxially with the water mist outlet (9), a coaxial upper electrode ring (18) and a lower electrode ring (21) being arranged at both ends of the circulation channel (26), and the charged water mist sprayed from the water mist outlet (9) passing through the upper electrode ring (18) and the lower electrode ring (21) in sequence; A second bracket (1), the second bracket (1) being arranged in the outer shell (2), a laser incident chamber (11) being formed in the second bracket (1), a glass window (12) corresponding to the laser incident chamber (11) being arranged at the bottom of the second bracket (1), and the glass window (12) being located above the nozzle (13).

2. The water-guided laser coupling device according to claim 1, characterized in that: An inner core (5) is arranged inside the outer shell (2), the inner core (5) is located between the outer shell (2) and the second bracket (1), a water guide channel (4) is formed between the outer wall of the inner core (5) and the inner wall of the outer shell (2), the water guide channel (4) is connected to the high-pressure water inlet (3), and a plurality of water channel radial holes (6) are formed on the circumferential side wall of the inner core (5), the water channel radial holes (6) are connected to the nozzle (13) and the water guide channel (4).

3. The water-guided laser coupling device according to claim 2, characterized in that: A thin water layer (14) is formed between the nozzle (13) and the glass window (12), and the thin water layer (14) is connected to the plurality of water channel radial holes (6).

4. The water-guided laser coupling device according to claim 2, characterized in that: A third bracket (7) is arranged inside the outer shell (2), the third bracket (7) is provided with the water outlet (25), and the nozzle (13) is connected to the third bracket (7).

5. The water-guided laser coupling device according to claim 4, characterized in that: The third bracket (7) is provided with the water mist outlet (9), a plurality of water mist radial holes (17) connected to the water mist outlet (9), and a water mist guide channel (15) connected to the plurality of water mist radial holes (17); the water mist guide channel (15) is connected to the charged water mist inlet (16).

6. The water-guided laser coupling device according to claim 4, characterized in that: An insulating partition (8) is provided at the bottom of the outer shell (2), and the insulating partition (8) is connected to the first bracket (20).

7. The water-guided laser coupling device according to claim 6, characterized in that: A plurality of buckles (22) are arranged at the top end of the first bracket (20), a plurality of clamping holes are arranged on the insulating partition (8), and the plurality of buckles (22) correspond to and are clamped with the plurality of clamping holes one by one.

8. The water-guided laser coupling device according to claim 6, characterized in that: An annular boss (23) is arranged at the bottom end of the third bracket (7), and the annular boss (23) covers the water mist outlet (9) and is coaxially arranged with the water mist outlet (9). A plurality of positioning piles (24) are arranged at the top end of the first bracket (20), and the plurality of positioning piles (24) are arranged around the outside of the annular boss (23) and abut against the outer wall of the annular boss (23), and a plurality of avoidance holes for the plurality of positioning piles (24) to pass through are opened on the insulating partition (8).

9. The water-guided laser coupling device according to claim 1, characterized in that: Insulating rings (19) are respectively provided on the top surfaces of the upper electrode ring (18) and the lower electrode ring (21).

10. The water-guided laser coupling device according to claim 1, characterized in that: The first bracket (20) is provided with a pair of electrode interfaces (10) corresponding to the upper electrode ring (18) and the lower electrode ring (21) respectively.

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