Laser cutting head

Abstract

The utility model belongs to the technical field of laser cutting equipment, and discloses a laser cutting head. The laser cutting head comprises an amplifier base, a swirler, a ceramic body and a nozzle, the amplifier base is provided with an installation cavity, the swirler is contained in the installation cavity, a gap exists between the swirler and the wall face of the installation cavity, the swirler is provided with a cavity, a first hole is formed in the top end, a second hole is formed in the bottom end, and a communicating hole is formed in the periphery. The amplifier base is provided with a first air inlet, a first air outlet, a second air outlet, a first channel, a second channel and a third channel, the first channel communicates with the first air inlet and the mounting cavity, the second channel communicates with the first air outlet and the first hole, and the third channel communicates with the second air outlet and the second hole; the ceramic body is installed on the amplifier base and provided with a second air inlet, a third air outlet and a fourth channel, the fourth channel is communicated with the second air inlet and the third air outlet, the second air inlet is communicated with the second air outlet, the nozzle is installed on the ceramic body, and the third air outlet is right opposite to the nozzle.

Description

Technical Field

[0001] The utility model relates to the technical field of laser cutting equipment, in particular to a laser cutting head. Background Art

[0002] With the continuous development of laser technology, more and more mature laser technology is applied in various fields, such as laser marking, laser printing, laser cutting, laser welding, laser ranging, etc. Laser has the characteristics of strong directionality, high brightness and concentrated energy. Therefore, laser light sources often generate a lot of heat during work. If the heat is not dissipated in time, it will affect the working life and work efficiency of the laser light source and related working components, and may even cause the laser light source and related working components to burn out.

[0003] At present, the vortex finder is usually connected to the laser cutting head through an air pipe so that the cold air generated by the vortex finder is blown into the laser cutting head to achieve the purpose of cooling. However, the design requires additional installation space for the external vortex finder, which may limit the mobility and flexibility of the laser cutting head itself, and the introduction of the air pipe may require more frequent maintenance and inspection to ensure the integrity of the air pipe and the reliability of the connection.

[0004] Therefore, it is necessary to provide a laser cutting head to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a laser cutting head, in which a vortex generator is installed inside the laser cutting head, which significantly reduces external pipes and connectors, makes the laser cutting head more flexible to deploy, has a good cooling effect, high cooling efficiency, and does not require frequent maintenance.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A laser cutting head, comprising:

[0008] An amplifier seat, which has a mounting cavity therein, a vortex finder is accommodated in the mounting cavity and has a gap with the wall of the mounting cavity, the vortex finder has a chamber inside, a first hole is provided at the top end of the vortex finder, a second hole is provided at the bottom end of the vortex finder, a connecting hole is provided at the periphery of the vortex finder, the first hole, the second hole and the connecting hole are all connected to the chamber, the amplifier seat has a first air inlet and a first channel, the first channel connects the first air inlet and the mounting cavity, the amplifier seat has a first air outlet and a second channel, the second channel connects the first air outlet and the first hole, the amplifier seat also has a second air outlet and a third channel, the third channel connects the second air outlet and the second hole;

[0009] A ceramic body, the ceramic body being detachably mounted on the amplifier seat, the ceramic body being provided with a second air inlet, a third air outlet and a fourth channel, the fourth channel being connected to the second air inlet and the third air outlet, and the second air inlet being connected to the second air outlet;

[0010] The nozzle is detachably mounted on the ceramic body, and the third air outlet is directly opposite to the nozzle.

[0011] Preferably, the vortex finder includes a main body and a protrusion arranged at the top end of the main body, the first hole is opened in the protrusion, the installation cavity includes a first chamber and a second chamber, the main body is located in the first chamber, the protrusion is located in the second chamber, the top end surface of the main body abuts against the wall surface of the first chamber, and the first channel connects the first chamber and the first air inlet.

[0012] Preferably, a first sealing member is disposed between the top end surface of the main body and the wall surface of the first chamber.

[0013] Preferably, the vortex finder further comprises a plurality of fixing portions, which are protruded from the main body at intervals along the circumference of the main body, and the fixing portions can abut against the side wall of the first chamber.

[0014] Preferably, there are a plurality of the communicating holes, and the plurality of communicating holes are arranged at intervals along the circumferential direction of the vortex finder on the outer circumference of the vortex finder.

[0015] Preferably, the amplifier seat includes a base and a seat body, the base and the seat body are detachably connected, the base is provided with a first groove, the seat body is provided with a second groove, the first groove is connected with the second groove to form the installation cavity.

[0016] Preferably, a second sealing member is sandwiched between the base and the seat body, and the second sealing member is arranged around the notch of the first groove.

[0017] Preferably, the laser cutting head further comprises:

[0018] The first fixing member is sleeved on the base and the outside of the base body, the first fixing member includes a first connecting portion and a first bearing portion, the first connecting portion is threadedly connected to the base body, and the base is supported by the first bearing portion.

[0019] Preferably, the laser cutting head further comprises:

[0020] The second fixing member is sleeved outside the base and the ceramic body, the second fixing member includes a second connecting portion and a second bearing portion, the second connecting portion is threadedly connected to the base, and the ceramic body is supported by the second bearing portion.

[0021] Preferably, the nozzle is threadably connected to the ceramic body.

[0022] Beneficial effects of the utility model:

[0023] This laser cutting head includes an amplifier seat, a vortex generator, a ceramic body and a nozzle. The amplifier seat has an installation cavity. The vortex generator is accommodated in the installation cavity and has a gap with the wall of the installation cavity. The vortex generator has a chamber inside, a first hole is opened at the top end, a second hole is opened at the bottom end, and a connecting hole is opened at the periphery. The first hole, the second hole and the connecting hole are all connected to the chamber. The amplifier seat has a first air inlet and a first channel, and the first channel connects the first air inlet and the installation cavity. The amplifier seat has a first air outlet and a second channel, and the second channel connects the first air outlet and the first hole. The amplifier seat also has a second air outlet and a third channel, and the third channel connects the second air outlet and the second hole. The ceramic body can be detachably installed on the amplifier seat, and a second air inlet, a third air outlet and a fourth channel are opened in the ceramic body. The fourth channel connects the second air inlet and the third air outlet, and the second air inlet is connected to the second air outlet. The nozzle can be detachably installed on the ceramic body, and the third air outlet is directly opposite to the nozzle.

[0024] During cooling, normal temperature compressed gas is introduced through the first air inlet, and the normal temperature compressed gas enters the installation cavity through the first channel. Since there is a gap between the wall of the installation cavity and the vortex finder, the normal temperature compressed gas flows into the gap. The outer periphery of the vortex finder is provided with a connecting hole, and the normal temperature compressed gas in the gap enters the chamber of the vortex finder through the connecting hole. Under the action of the vortex tube, the normal temperature compressed air generates a vortex to separate hot and cold air flows. The hot air flow moves upward, discharges the vortex tube through the first hole and enters the second channel, and then follows the second channel through the first air outlet to discharge the amplifier seat; the cold air flow moves downward, discharges the vortex tube through the second hole and enters the third channel, and then follows the third channel through the second air outlet to enter the second air inlet, and then follows the fourth channel through the third air outlet to be sprayed to the nozzle, so as to achieve the purpose of cooling the nozzle.

[0025] Compared with the prior art, the laser cutting head provided by the utility model sets the vortex generator inside the laser cutting head, which can significantly reduce external pipes and connectors, and facilitate flexible deployment in a limited working area; the vortex generator is directly located inside the laser cutting head, and the cold air flowing in the amplifier seat and the ceramic body can play a cooling role. The cold air is directly sprayed to the nozzle to cool it, thereby improving the cooling effect and efficiency; the pipes and connectors are reduced, saving a lot of time and cost during maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the laser cutting head provided by the utility model;

[0027] Figure 2 This is one of the cross-sectional views of the laser cutting head provided by the utility model;

[0028] Figure 3 This is the second cross-sectional view of the laser cutting head provided by the utility model;

[0029] Figure 4 This is one of the cross-sectional views of the amplifier seat provided by the utility model;

[0030] Figure 5 This is the second cross-sectional view of the amplifier base provided by the utility model;

[0031] Figure 6 It is a structural schematic diagram of the vortex finder provided by the utility model;

[0032] Figure 7 It is a cross-sectional view of the vortex finder provided by the utility model.

[0033] In the figure:

[0034] 1. Amplifier seat; 11. Base; 111. Second air outlet; 112. Third channel; 113. First slot; 12. Seat body; 121. First air inlet; 122. First channel; 123. First air outlet; 124. Second channel; 125. Second slot; 13. Installation cavity; 131. First chamber; 132. Second chamber;

[0035] 2. vortex flow device; 21. chamber; 22. first hole; 23. second hole; 24. connecting hole; 25. main body; 26. protruding part; 27. fixing part;

[0036] 3. Ceramic body; 31. Second air inlet; 32. Fourth channel; 33. Third air outlet;

[0037] 4. Nozzle;

[0038] 5. The first sealing member;

[0039] 6. Second sealing member;

[0040] 7. first fixing member; 71. first connecting portion; 72. first bearing portion;

[0041] 8. Second fixing member; 81. Second connecting portion; 82. Second bearing portion. DETAILED DESCRIPTION

[0042] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0043] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0045] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0046] At present, the vortex finder is usually connected to the laser cutting head through an air pipe so that the cold air generated by the vortex finder is blown into the laser cutting head to achieve the purpose of cooling. However, the design requires additional installation space for the external vortex finder, which may limit the mobility and flexibility of the laser cutting head itself, and the introduction of the air pipe may require more frequent maintenance and inspection to ensure the integrity of the air pipe and the reliability of the connection.

[0047] In order to solve the above problems, Figure 1-Figure 7As shown, the present embodiment provides a laser cutting head, which includes an amplifier seat 1, a vortex generator 2, a ceramic body 3 and a nozzle 4. The amplifier seat 1 has a mounting cavity 13, the vortex generator 2 is accommodated in the mounting cavity 13 and there is a gap with the wall of the mounting cavity 13, the vortex generator 2 has a chamber 21 inside, the top of the vortex generator 2 is provided with a first hole 22, the bottom of the vortex generator 2 is provided with a second hole 23, the outer periphery of the vortex generator 2 is provided with a connecting hole 24, the first hole 22, the second hole 23 and the connecting hole 24 are all connected to the chamber 21, the amplifier seat 1 is provided with a first air inlet 121 and a first channel 122, the first channel 122 connects the first air inlet 121 and the mounting cavity 13. The amplifier seat 1 is also provided with a first air outlet 123 and a second channel 124, the second channel 124 is connected to the first air outlet 123 and the first hole 22, the amplifier seat 1 is also provided with a second air outlet 111 and a third channel 112, the third channel 112 is connected to the second air outlet 111 and the second hole 23; the ceramic body 3 can be detachably installed on the amplifier seat 1, the ceramic body 3 is provided with a second air inlet 31, a third air outlet 33 and a fourth channel 32, the fourth channel 32 is connected to the second air inlet 31 and the third air outlet 33, the second air inlet 31 is connected to the second air outlet 111, the nozzle 4 is detachably installed on the ceramic body 3, and the third air outlet 33 is directly opposite to the nozzle 4.

[0048] During cooling, normal temperature compressed gas is introduced through the first air inlet 121, and the normal temperature compressed gas enters the installation cavity 13 through the first channel 122. Since there is a gap between the wall of the installation cavity 13 and the vortex finder 2, the normal temperature compressed gas flows into the gap. The outer periphery of the vortex finder 2 is provided with a connecting hole 24, and the normal temperature compressed gas in the gap enters the chamber 21 of the vortex finder 2 through the connecting hole 24. Under the action of the vortex tube, the normal temperature compressed air generates a vortex to separate hot and cold air flows. The hot air flow moves upward, discharges the vortex tube through the first hole 22 and enters the second channel 124, and then follows the second channel 124 through the first air outlet 123 to discharge the amplifier seat 1; the cold air flow moves downward, discharges the vortex tube through the second hole 23 and enters the third channel 112, and then follows the third channel 112 through the second air outlet 111 to enter the second air inlet 31, and then follows the fourth channel 32 through the third air outlet 33 to be ejected to the nozzle 4, so as to achieve the purpose of cooling the nozzle 4.

[0049] Compared with the prior art, the laser cutting head provided in this embodiment sets the vortex finder 2 inside the laser cutting head, which can significantly reduce external pipes and connectors, and facilitate flexible deployment in a limited working area; the vortex finder 2 is directly located inside the laser cutting head, and the cold air flowing in the amplifier seat 1 and the ceramic body 3 can play a cooling role, and the cold air is directly sprayed to the nozzle 4 to cool it, thereby improving the cooling effect and cooling efficiency; the pipes and connectors are reduced, saving a lot of time and cost during maintenance.

[0050] In this embodiment, if Figure 6 , Figure 7 As shown, there are multiple communicating holes 24, and the multiple communicating holes 24 are arranged at intervals along the circumference of the vortex finder 2 on the outer periphery of the vortex finder 2. The multiple communicating holes 24 can increase the number of channels for the normal temperature compressed gas to flow into the chamber 21 of the vortex finder 2, and improve the circulation efficiency of the normal temperature compressed gas. By arranging multiple communicating holes 24 at intervals along the circumference of the vortex finder 2, the gas can be guided to enter the chamber 21 of the vortex finder 2 at different angles and directions, forming a more complex and intense vortex.

[0051] Specifically, Figure 6 , Figure 7 As shown, the vortex finder 2 includes a main body 25 and a protrusion 26 arranged at the top of the main body 25, the first hole 22 is opened in the protrusion 26, the installation cavity 13 includes a first chamber 131 and a second chamber 132, the main body 25 is located in the first chamber 131, the protrusion 26 is located in the second chamber 132, the top end surface of the main body 25 abuts against the wall surface of the first chamber 131, and the first channel 122 connects the first chamber 131 and the first air inlet 121. Through this arrangement, after the normal temperature compressed gas enters the installation cavity 13 through the first channel 122, it can only enter the first chamber 131, and then flow downward along the gap to enter the chamber 21 of the vortex finder 2 through the connecting hole 24. The end face of the main body 25 abuts against the wall of the first chamber 131 to prevent the normal temperature compressed gas from entering the second chamber 132, thereby ensuring a clear path for the flow of the normal temperature compressed gas, so that the normal temperature compressed gas can flow according to the predetermined path and will not enter the vortex finder 2 through the first hole 22. At the same time, it can also prevent the hot gas flowing out of the first hole 22 from entering the first chamber 131, thereby ensuring the normal operation of the vortex finder 2.

[0052] Furthermore, if Figure 2 , Figure 4 , Figure 6 As shown, a first seal 5 is sandwiched between the top end surface of the main body 25 and the wall surface of the first chamber 131. The first seal 5 can further play a sealing effect to prevent the compressed gas at room temperature from flowing into the second chamber 132 along the gap between the main body 25 and the wall surface of the first chamber 131. At the same time, it can also prevent the hot gas flowing out of the first hole 22 from entering the first chamber 131, thereby ensuring the normal operation of the vortex finder 2.

[0053] Specifically, the material of the first sealing member 5 may be rubber, silicone, ceramic, etc., which is not limited in this embodiment.

[0054] Specifically, Figure 2 , Figure 6As shown, the vortex finder 2 further includes a plurality of fixing portions 27, which are protrudingly arranged on the main body 25 at intervals along the circumference of the main body 25, and the fixing portions 27 can abut against the side wall of the first chamber 131. The fixing portions 27 abut against the inner wall of the first chamber 131, so that the vortex finder 2 can be stably arranged in the installation cavity 13 without displacement or shaking, and the plurality of fixing portions 27 are arranged at intervals along the circumference of the main body 25, which will not affect the flow of normal temperature compressed air downward along the gap, and the normal temperature compressed air can continue to flow downward from the gap between the two fixing portions 27.

[0055] Specifically, Figure 2-Figure 5 As shown, the amplifier seat 1 includes a base 11 and a base body 12, the base 11 and the base body 12 are detachably connected, the base 11 is provided with a first groove 113, the base body 12 is provided with a second groove 125, and the first groove 113 and the second groove 125 are connected to form a mounting cavity 13. The amplifier seat 1 is configured to be composed of the detachably connected base 11 and the base body 12, so that the installation and removal of the vortex finder 2 becomes simple and quick, and the time for installing and replacing the vortex finder 2 is greatly saved.

[0056] In this embodiment, if Figure 2 , Figure 5 As shown, a second seal 6 is sandwiched between the base 11 and the base body 12, and the second seal 6 is arranged around the notch of the first groove 113. The second seal 6 can play a sealing effect to prevent the normal temperature compressed gas from leaking along the gap between the base 11 and the base body 12 when flowing downward in the first chamber 131, thereby ensuring the normal operation of the vortex finder 2.

[0057] Specifically, the material of the second sealing member 6 may be rubber, silicone, ceramic, etc., which is not limited in this embodiment.

[0058] In this embodiment, if Figure 1-Figure 3 As shown, the laser cutting head also includes a first fixing member 7, which is sleeved outside the base 11 and the base body 12. The first fixing member 7 includes a first connecting portion 71 and a first bearing portion 72. The first connecting portion 71 is threadedly connected to the base body 12, and the base 11 is supported by the first bearing portion 72. When fixing, first insert the base 11 into the first fixing member 7 so that the base 11 is supported by the first bearing portion 72, and then screw the first connecting portion 71 to make it threadedly connected to the base body 12 until the base 11 and the base body 12 are abutted and then screwed into place, so that the base 11 and the base body 12 are fixedly connected. When maintenance or overhaul is required, reversely screw the first connecting portion 71 and the base body 12 to unscrew it. The threaded connection method makes the installation and disassembly of the base 11 and the base body 12 simple and quick, without the need for complicated tools or operation processes, reducing the difficulty of installation and maintenance.

[0059] Similarly, if Figure 1-Figure 3As shown, the laser cutting head also includes a second fixing member 8, which is sleeved outside the base 11 and the ceramic body 3. The second fixing member 8 includes a second connecting portion 81 and a second bearing portion 82. The second connecting portion 81 is threadedly connected to the base 11, and the ceramic body 3 is supported on the second bearing portion 82. When fixing, first insert the ceramic body 3 into the second fixing member 8 so that the ceramic body 3 is supported on the second bearing portion 82, and then screw the second connecting portion 81 to make it threadedly connected to the base 11 until the ceramic body 3 abuts against the base 11 and then screws it into place, so that the ceramic body 3 is fixedly connected to the base 11. When maintenance or overhaul is required, reversely screw the second connecting portion 81 and the base 11 to unscrew it. The threaded connection method makes the installation and disassembly of the base 11 and the ceramic body 3 simple and quick, without the need for complicated tools or operating procedures, reducing the difficulty of installation and maintenance.

[0060] Specifically, the nozzle 4 is threadedly connected to the ceramic body 3. The threaded connection provides a firm and tight connection mode, ensuring the stability and sealing between the nozzle 4 and the ceramic body 3; the threaded connection allows the nozzle 4 to be easily installed on the ceramic body 3 and tightened by rotation, and when the nozzle 4 needs to be cleaned, repaired or replaced, it can also be conveniently disassembled by rotation.

[0061] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A laser cutting head, characterized in that: include: An amplifier seat (1) has an installation cavity (13) therein, a vortex finder (2) is accommodated in the installation cavity (13) and there is a gap between the vortex finder (2) and the wall surface of the installation cavity (13), the vortex finder (2) has a chamber (21) inside, a first hole (22) is provided at the top end of the vortex finder (2), a second hole (23) is provided at the bottom end of the vortex finder (2), a connecting hole (24) is provided on the periphery of the vortex finder (2), the first hole (22), the second hole (23) and the connecting hole (24) are all connected to the chamber (21), and the amplifier seat (1) has a A first air inlet (121) and a first channel (122), wherein the first channel (122) is connected to the first air inlet (121) and the mounting cavity (13); the amplifier seat (1) is further provided with a first air outlet (123) and a second channel (124), wherein the second channel (124) is connected to the first air outlet (123) and the first hole (22); the amplifier seat (1) is further provided with a second air outlet (111) and a third channel (112), wherein the third channel (112) is connected to the second air outlet (111) and the second hole (23); A ceramic body (3), the ceramic body (3) being detachably mounted on the amplifier seat (1), the ceramic body (3) being provided with a second air inlet (31), a third air outlet (33) and a fourth channel (32), the fourth channel (32) being connected to the second air inlet (31) and the third air outlet (33), and the second air inlet (31) being connected to the second air outlet (111); A nozzle (4), wherein the nozzle (4) is detachably mounted on the ceramic body (3), and the third air outlet (33) is directly opposite to the nozzle (4).

2. The laser cutting head according to claim 1, characterized in that: The vortex finder (2) comprises a main body (25) and a protruding portion (26) arranged at the top end of the main body (25); the first hole (22) is opened in the protruding portion (26); the mounting cavity (13) comprises a first chamber (131) and a second chamber (132); the main body (25) is located in the first chamber (131); the protruding portion (26) is located in the second chamber (132); the top end surface of the main body (25) abuts against the wall surface of the first chamber (131); and the first channel (122) communicates with the first chamber (131) and the first air inlet (121).

3. The laser cutting head according to claim 2, characterized in that: A first sealing member (5) is sandwiched between the top end surface of the main body (25) and the wall surface of the first chamber (131).

4. The laser cutting head according to claim 2, characterized in that: The vortex finder (2) further comprises a plurality of fixing portions (27), wherein the plurality of fixing portions (27) are protruded from the main body (25) at intervals along the circumference of the main body (25), and the fixing portions (27) are capable of abutting against the side wall of the first chamber (131).

5. The laser cutting head according to claim 1, characterized in that: The number of the communicating holes (24) is plural, and the communicating holes (24) are arranged at intervals along the circumferential direction of the vortex finder (2) on the outer circumference of the vortex finder (2).

6. The laser cutting head according to any one of claims 1 to 5, characterized in that: The amplifier seat (1) comprises a base (11) and a base body (12); the base (11) and the base body (12) are detachably connected; the base (11) is provided with a first groove (113); the base body (12) is provided with a second groove (125); the first groove (113) and the second groove (125) are connected to form the installation cavity (13).

7. The laser cutting head according to claim 6, characterized in that: A second sealing member (6) is sandwiched between the base (11) and the seat body (12), and the second sealing member (6) is arranged around the notch of the first groove (113).

8. The laser cutting head according to claim 6, characterized in that: The laser cutting head also includes: A first fixing member (7) is sleeved outside the base (11) and the seat body (12), the first fixing member (7) comprising a first connecting portion (71) and a first bearing portion (72), the first connecting portion (71) being threadedly connected to the seat body (12), and the base (11) being supported by the first bearing portion (72).

9. The laser cutting head according to claim 6, characterized in that: The laser cutting head also includes: The second fixing member (8) is sleeved outside the base (11) and the ceramic body (3), and the second fixing member (8) comprises a second connecting portion (81) and a second bearing portion (82), the second connecting portion (81) is threadedly connected to the base (11), and the ceramic body (3) is supported by the second bearing portion (82).

10. The laser cutting head according to claim 1, characterized in that: The nozzle (4) is threadably connected to the ceramic body (3).

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