A laser cutting head with a water-cooling system structure

Abstract

This utility model provides a laser cutting head with a water-cooling system structure, including a laser connector, a collimating protection lens module, a collimating lens module, a galvanometer module, a focusing lens module, a focusing protection lens module, and a cutting nozzle. The galvanometer module includes a galvanometer housing and a galvanometer assembly. The rear side of the galvanometer housing is provided with an inlet water channel, a first drainage water channel, an outlet water channel, an inlet water interface, and an outlet water interface. The inlet water interface is connected to one end of the inlet water channel. The collimating lens module is provided with a collimating water channel, the two ends of which are respectively connected to the other end of the inlet water channel and one end of the first drainage water channel. The right side of the galvanometer housing is provided with a galvanometer cavity water channel. The focusing lens module is provided with a focusing water channel, the two ends of which are respectively connected to the other end of the first drainage water channel and one end of the focusing water channel. The other end of the focusing water channel is connected to one end of the outlet water channel, and the other end of the outlet water channel is connected to the outlet water interface. The beneficial effect is that multiple water channels are combined into a unidirectional water-cooling system.

Description

Technical Field

[0001] This utility model relates to the field of laser cutting device technology, specifically to a laser cutting head with a water-cooling system structure. Background Technology

[0002] With the development of science and technology, my country's manufacturing industry is facing a transformation towards high-end and intelligent manufacturing. As a basic processing technology, laser technology is increasingly penetrating all aspects of industrial production. Laser cutting is a technology that uses a high-power-density fiber laser beam to irradiate the material being cut, causing the irradiated part of the material to vaporize and form tiny holes. As the fiber laser beam moves, the holes are continuously formed to complete the cutting process.

[0003] Existing laser cutting heads require power adjustments to adapt to different cutting materials. For thicker materials, higher power is needed, leading to increased heat generation from the lenses within the laser cutting head during prolonged operation. This necessitates the addition of cooling structures. Current cooling systems typically involve adding water channels and corresponding inlet and outlet ports to each module. Since each module's water cooling structure is relatively independent, each module requires its own inlet and outlet ports, resulting in a complex external surface structure that hinders processing and reduces product competitiveness. Utility Model Content

[0004] To address the problems in the existing technology, this utility model provides a laser cutting head with a water-cooling system structure, which solves the problem that the water-cooling structures of each module in the existing laser cutting head are relatively independent, affecting the processing of the laser cutting head.

[0005] This utility model discloses a laser cutting head with a water-cooling system structure, including a laser connector, a collimating protection lens module, a collimating lens module, a galvanometer module, a focusing lens module, a focusing protection lens module, and a cutting nozzle. The galvanometer module includes a galvanometer housing and multiple galvanometer assemblies disposed within the galvanometer housing. The rear side of the galvanometer housing is provided with a water inlet channel, a first drainage channel, a water outlet channel, a water inlet interface, and a water outlet interface. The water inlet interface is connected to one end of the water inlet channel. The collimating lens module is provided with a collimating water channel, which can dissipate heat from the collimating lens module. The other end of the inlet water path is connected to one end of the collimation water path, and the other end of the collimation water path is connected to one end of the first drainage water path. A galvanometer cavity water path is provided on the right side of the galvanometer housing, which can dissipate heat from the galvanometer housing. The other end of the first drainage water path is connected to one end of the galvanometer cavity water path. A focusing water path is provided on the focusing lens module, which can dissipate heat from the focusing lens module. The other end of the galvanometer cavity water path is connected to one end of the focusing water path, and the other end of the focusing water path is connected to one end of the outlet water path. The other end of the outlet water path is connected to the outlet interface.

[0006] This utility model is further improved by having two galvanometer assemblies. Each galvanometer assembly includes a galvanometer mounting bracket, a drive motor, and a galvanometer reflector. The drive motor can drive the galvanometer reflector to rotate. The two galvanometer assemblies are a first galvanometer assembly and a second galvanometer assembly. The galvanometer mounting bracket of the first galvanometer assembly is provided with a first motor water channel, and the galvanometer mounting bracket of the second galvanometer assembly is provided with a second motor water channel. The first motor water channel can dissipate heat from the drive motor of the first galvanometer assembly. The first motor water channel is located between the galvanometer cavity water channel and the first drainage water channel. The other end of the first drainage water channel is connected to one end of the first motor water channel, and the other end of the first motor water channel is connected to one end of the galvanometer cavity water channel. The second motor water channel can dissipate heat from the drive motor of the second galvanometer assembly. The second motor water channel is located between the focusing water channel and the outlet water channel. The other end of the focusing water channel is connected to one end of the second motor water channel, and the other end of the second motor water channel is connected to one end of the outlet water channel.

[0007] This utility model is further improved by still providing a beam combiner assembly and an industrial camera inside the galvanometer housing. The beam combiner assembly can reflect the light reflected by the galvanometer assembly into the focusing lens module. A beam combiner water channel is provided on the side of the beam combiner assembly, which can dissipate heat from the beam combiner assembly. The beam combiner water channel is located between the galvanometer cavity water channel and the focusing water channel. The other end of the galvanometer cavity water channel is connected to one end of the beam combiner water channel, and the other end of the beam combiner water channel is connected to one end of the focusing water channel.

[0008] In a further improvement, a second water channel is provided on the right side of the galvanometer housing. The second water channel can cooperate with the water channel of the galvanometer cavity to dissipate heat from the galvanometer housing. The second water channel is located between the beam-combining water channel and the focusing water channel. The other end of the beam-combining water channel is connected to one end of the second water channel, and the other end of the second water channel is connected to one end of the focusing water channel.

[0009] The present invention is further improved by providing a third water channel on the lower end face of the galvanometer housing. The third water channel can dissipate heat from the galvanometer housing. The third water channel is located between the focusing water channel and the second motor water channel. The other end of the focusing water channel is connected to one end of the third water channel, and the other end of the third water channel is connected to one end of the second motor water channel.

[0010] In a further improvement, the lower end face of the galvanometer housing is provided with a fourth water channel. The fourth water channel can dissipate heat from the galvanometer housing. The fourth water channel is located between the second motor water channel and the outlet water channel. The other end of the second motor water channel is connected to one end of the fourth water channel, and the other end of the fourth water channel is connected to one end of the outlet water channel.

[0011] In a further improvement, a fifth water channel is provided on the rear side of the galvanometer housing. The fifth water channel is located between the fourth water channel and the outlet water channel. The other end of the fourth water channel is connected to one end of the fifth water channel, and the other end of the fifth water channel is connected to one end of the outlet water channel. The fifth water channel can dissipate heat from the galvanometer housing.

[0012] This utility model is further improved by providing a water channel plate and a rear water channel sealing plate on the rear side of the galvanometer housing. The inlet water channel, the first diversion water channel, the outlet water channel, the inlet interface and the outlet interface are all provided on the water channel plate. The water channel plate is provided with a first diversion groove, which can cooperate with the inner surface of the rear water channel sealing plate to form the first diversion water channel.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides a laser cutting head with a water-cooling system structure. By adopting this structure, it can effectively solve the problem that the water-cooling structures of each module in the existing laser cutting head are relatively independent, which affects the processing of the laser cutting head. By connecting the water inlet interface, water inlet channel, collimation channel, first drainage channel, galvanometer cavity channel, focusing channel, water outlet channel and water outlet interface in sequence, multiple water channels are formed into a unidirectional water-cooling system. Only a single water inlet interface and water outlet interface need to be set on the laser cutting head, which reduces the interference caused by setting multiple water inlet interfaces and water outlet interfaces to the operation of the laser cutting head, improves the user experience and the competitiveness of the product. Attached Figure Description

[0014] To more clearly illustrate the solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 A schematic diagram of the overall structure of a laser cutting head with a water-cooling system.

[0016] Figure 2 A top-view structural diagram of a laser cutting head with a water-cooling system.

[0017] Figure 3 for Figure 2 Sectional view along the AA direction;

[0018] Figure 4 A schematic diagram of the internal structure of a laser cutting head with a water-cooling system.

[0019] Figure 5 A schematic diagram of a laser cutting head with a water-cooling system.

[0020] Figure 6 A schematic diagram of a laser cutting head with a water-cooling system.

[0021] Figure 7 An exploded structural diagram of a laser cutting head with a water-cooling system.

[0022] Figure 8 This is a schematic diagram of the galvanometer housing from an elevation angle. Detailed Implementation

[0023] Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, and accompanying drawings are used to distinguish different objects, not to describe a particular order.

[0024] In this invention, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment to other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this invention can be combined with other embodiments.

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0026] like Figure 1-8As shown, this utility model discloses a laser cutting head with a water-cooling system structure, including a laser connector 1, a collimating protection lens module 2, a collimating lens module 3, a galvanometer module 4, a focusing lens module 5, a focusing protection lens module 6, and a cutting nozzle 7. The galvanometer module 4 includes a galvanometer housing 41 and multiple galvanometer assemblies disposed within the galvanometer housing 41. The rear side of the galvanometer housing 41 is provided with a water inlet channel 421, a first drainage channel 423, a water outlet channel 422, a water inlet interface 46, and a water outlet interface 47. The water inlet interface 46 is connected to one end of the water inlet channel 421. The collimating lens module 3 is provided with a collimating water channel, which can align with the collimating lens. Module 3 is used for heat dissipation. The other end of the inlet water channel 421 is connected to one end of the collimation water channel, and the other end of the collimation water channel is connected to one end of the first drainage water channel 423. A galvanometer cavity water channel is provided on the right side of the galvanometer housing 41. The galvanometer cavity water channel can dissipate heat from the galvanometer housing 41. The other end of the first drainage water channel 423 is connected to one end of the galvanometer cavity water channel. A focusing water channel is provided on the focusing lens module 5. The focusing water channel can dissipate heat from the focusing lens module 5. The other end of the galvanometer cavity water channel is connected to one end of the focusing water channel, and the other end of the focusing water channel is connected to one end of the outlet water channel 422. The other end of the outlet water channel 422 is connected to the outlet interface 47.

[0027] The water inlet 46, water inlet channel 421, collimation channel, first drainage channel 423, galvanometer cavity channel, focusing channel, water outlet channel 422, and water outlet 47 are connected in sequence to form a unidirectional water cooling system. Only a single water inlet 46 and water outlet 47 need to be set on the laser cutting head, which reduces the interference to the operation of the laser cutting head caused by setting multiple water inlet 46 and water outlet 47, and improves the user experience and product competitiveness.

[0028] The collimating lens module 3 includes a collimating mounting frame 31 and a collimating drawer 32 disposed in the collimating mounting frame 31. The collimating water channel is disposed inside the collimating mounting frame 31 and is disposed around the collimating drawer 32. The collimating lens is installed in the collimating drawer 32.

[0029] The focusing lens module 5 includes a focusing mounting bracket 51 and a focusing drawer 52 disposed in the focusing mounting bracket 51. The focusing water channel is disposed inside the focusing mounting bracket 51 and is disposed around the periphery of the focusing drawer 52. The focusing lens is installed in the focusing drawer 52.

[0030] There are two galvanometer assemblies, each including a galvanometer mounting bracket 48, a drive motor, and a galvanometer reflector 49. The drive motor can drive the galvanometer reflector 49 to rotate. The two galvanometer assemblies are a first galvanometer assembly and a second galvanometer assembly. The galvanometer mounting bracket 48 of the first galvanometer assembly is provided with a first motor water channel, and the galvanometer mounting bracket 48 of the second galvanometer assembly is provided with a second motor water channel. The first motor water channel can dissipate heat from the drive motor of the first galvanometer assembly. The first motor water channel is located between the galvanometer cavity water channel and the first drainage water channel 423. The other end of the first drainage water channel 423 is connected to one end of the first motor water channel, and the other end of the first motor water channel is connected to one end of the galvanometer cavity water channel. The second motor water channel can dissipate heat from the drive motor of the second galvanometer assembly. The second motor water channel is located between the focusing water channel and the outlet water channel 422. The other end of the focusing water channel is connected to one end of the second motor water channel, and the other end of the second motor water channel is connected to one end of the outlet water channel 422.

[0031] By connecting the first motor water circuit and the second motor water circuit to the water cooling system, the water cooling structure of the laser cutting head is simplified, and the problem of needing to set up an additional water inlet interface 46 and water outlet interface 47 for the water cooling structure of the first galvanometer assembly and the second galvanometer assembly is solved.

[0032] The galvanometer housing is provided with a first motor water inlet channel that cooperates with the first motor water circuit. The first motor water inlet channel is located between the first diversion water circuit 423 and the first motor water circuit. One end of the first motor water inlet channel is provided with a first motor water inlet 410 that cooperates with the first diversion water circuit 423.

[0033] The collimated waterway is provided with a collimated inlet 411 and a collimated outlet 412 at both ends. The collimated inlet 411 and the collimated outlet 412 are respectively connected to the water inlet waterway 421 and the first diversion waterway 423.

[0034] The galvanometer housing 41 also houses the beam combiner assembly 8 and the industrial camera 9. The beam combiner assembly 8 can reflect the light reflected by the galvanometer assembly into the focusing lens module 5. A beam combiner water channel 81 is provided on the side of the beam combiner assembly 8. The beam combiner water channel 81 can dissipate heat from the beam combiner assembly 8. The beam combiner water channel 81 is located between the galvanometer cavity water channel and the focusing water channel. The other end of the galvanometer cavity water channel is connected to one end of the beam combiner water channel 81, and the other end of the beam combiner water channel 81 is connected to one end of the focusing water channel.

[0035] By setting up the beam combining water channel 81, the beam combining water channel 81 can be connected to the water cooling system, which simplifies the water cooling structure of the laser cutting head and solves the problem that the water cooling structure of the beam combining mirror assembly 8 requires additional water inlet interface 46 and water outlet interface 47.

[0036] A second water channel is also provided on the right side of the galvanometer housing 41. The second water channel is located between the beam-combining water channel 81 and the focusing water channel. The other end of the beam-combining water channel 81 is connected to one end of the second water channel, and the other end of the second water channel is connected to one end of the focusing water channel.

[0037] By setting up the second drainage water channel, the beam-combining water channel 81 and the focusing water channel are connected, and it can also cooperate with the galvanometer cavity water channel to dissipate heat from the galvanometer housing 41.

[0038] A focusing water inlet channel 426 is provided between the second diversion water channel and the focusing water channel.

[0039] A third water channel is provided on the lower end face of the galvanometer housing 41. The third water channel is located between the focusing water channel and the second motor water channel. The other end of the focusing water channel is connected to one end of the third water channel, and the other end of the third water channel is connected to one end of the second motor water channel.

[0040] By setting up the third water channel, the focusing water channel and the second motor water channel are connected, and the galvanometer housing 41 can also be cooled.

[0041] The lower end face of the galvanometer housing 41 is also provided with a fourth water channel. The fourth water channel is located between the second motor water channel and the outlet water channel 422. The other end of the second motor water channel is connected to one end of the fourth water channel, and the other end of the fourth water channel is connected to one end of the outlet water channel 422.

[0042] By setting up the fourth water diversion channel, the second motor water channel and the outlet water channel 422 are connected, and the galvanometer housing 41 can also be cooled.

[0043] A fifth water channel 424 is also provided on the rear side of the galvanometer housing 41. The fifth water channel 424 is located between the fourth water channel and the outlet water channel 422. The other end of the fourth water channel is connected to one end of the fifth water channel 424, and the other end of the fifth water channel is connected to one end of the outlet water channel 422.

[0044] By setting the fifth water inlet channel 424, the fourth water inlet channel and the water outlet channel 422 are connected, and the mirror housing 41 can also be cooled.

[0045] A water channel plate 42 and a rear water channel sealing plate 43 are provided on the rear side of the galvanometer housing 41. The inlet water channel 421, the first diversion water channel 423, the outlet water channel 422, the inlet interface 46 and the outlet interface 47 are all provided on the water channel plate 42. The water channel plate 42 is provided with a first diversion groove, which can cooperate with the inner surface of the rear water channel sealing plate 43 to form the first diversion water channel 423.

[0046] The first diversion channel is provided with a first diversion channel inlet 4231 and a first diversion channel outlet 4232 at both ends.

[0047] The outlet 4232 of the first diversion channel is connected to the inlet 410 of the first motor.

[0048] The water inlet 46 and the water outlet 47 are located above the water circuit board 42, and are flush with the water circuit board 42. This flush arrangement effectively prevents the water inlet 46 and the water outlet 47 from interfering with the operation of the laser cutting head.

[0049] The water channel plate 42 is also provided with a fifth diversion channel, which can cooperate with the inner surface of the rear water channel sealing plate 43 to form a fifth diversion water channel 424.

[0050] The fifth diversion channel is provided with a fifth diversion channel inlet 413 at each end.

[0051] A right water channel sealing plate 44 is provided on the right side of the galvanometer housing 41. A galvanometer cavity groove 414 and a second drainage groove 417 are provided on the right side of the galvanometer housing 41. The galvanometer cavity groove 414 can cooperate with the inner surface of the right water channel sealing plate 44 to form a galvanometer cavity water channel. The second drainage groove 417 can cooperate with the inner surface of the right water channel sealing plate 44 to form a second drainage water channel.

[0052] The galvanometer cavity trough 414 is provided with a galvanometer cavity trough inlet 415 and a galvanometer cavity trough outlet 416 at both ends.

[0053] The second diversion channel 417 is provided with a second diversion channel inlet 418 and a second diversion channel outlet 419 at both ends.

[0054] One end of the water inlet channel 426 is connected to the outlet 419 of the second diversion channel.

[0055] A beam-combining guide 50 is provided on the front side of the galvanometer housing 41. The beam-combining guide 50 is provided with a beam-combining inlet channel and a beam-combining outlet channel. One end of the beam-combining inlet channel is connected to the outlet 416 of the galvanometer cavity groove, and the other end of the beam-combining inlet channel is connected to one end of the beam-combining water passage 81. One end of the beam-combining outlet channel is connected to the other end of the beam-combining water passage 81, and the other end of the beam-combining outlet channel is connected to the inlet 418 of the second diversion groove.

[0056] The lower end face of the galvanometer housing 41 is provided with a drain channel sealing plate 45. The lower end face of the galvanometer housing 41 is provided with a third drain channel 424 and a fourth drain channel 427. The third drain channel 424 can cooperate with the drain channel sealing plate 45 to form a third drain channel, and the fourth drain channel 427 can cooperate with the drain channel sealing plate 45 to form a fourth drain channel.

[0057] The water channel is equipped with a water inlet and a water outlet at both ends, and the water outlet is connected to one end of the third diversion channel 424.

[0058] The other end of the focusing water inlet channel 426 is connected to the focusing water inlet.

[0059] The other end of the third diversion channel 424 is provided with a third diversion channel outlet 425, which is connected to the water inlet end of the second motor water circuit.

[0060] The fourth diversion channel 427 has a fourth diversion channel inlet 428 and a fourth diversion channel outlet 429 at its two ends, respectively. The outlet end of the second motor water circuit is connected to the fourth diversion channel inlet 428. The fourth diversion channel outlet 429 is connected to the fifth diversion channel inlet 413.

[0061] As can be seen from the above, the beneficial effects of this utility model are: it can effectively solve the problem that the water cooling structures of the existing laser cutting head modules are relatively independent, which affects the processing of the laser cutting head. By connecting the water inlet 46, water inlet channel 421, collimation channel, first drainage channel 423, galvanometer cavity channel, focusing channel, water outlet channel 422 and water outlet 47 in sequence, multiple water channels are formed into a unidirectional water cooling system. Only a single water inlet 46 and water outlet 47 need to be set on the laser cutting head, which reduces the interference caused by setting multiple water inlet 46 and water outlet 47 on the operation of the laser cutting head, improves the user experience and the competitiveness of the product.

[0062] The specific embodiments described above are preferred embodiments of this utility model, and are not intended to limit the specific scope of this utility model. The scope of this utility model includes but is not limited to the specific embodiments described above. All equivalent changes made in accordance with this utility model are within the protection scope of this utility model.

Claims

1. A laser cutting head having a water cooling system structure, characterized by: The system includes a laser connector, a collimating protection lens module, a collimating lens module, a galvanometer module, a focusing lens module, a focusing protection lens module, and a cutting nozzle. The galvanometer module includes a galvanometer housing and multiple galvanometer assemblies disposed within the housing. The rear side of the galvanometer housing has a water inlet channel, a first drainage channel, a water outlet channel, a water inlet interface, and a water outlet interface. The water inlet interface is connected to one end of the water inlet channel. The collimating lens module has a collimating water channel for heat dissipation. The other end of the water inlet channel is connected to one end of the collimating water channel. The other end of the collimation water channel is connected to one end of the first drainage water channel. A galvanometer cavity water channel is provided on the right side of the galvanometer housing. The galvanometer cavity water channel can dissipate heat from the galvanometer housing. The other end of the first drainage water channel is connected to one end of the galvanometer cavity water channel. A focusing water channel is provided on the focusing lens module. The focusing water channel can dissipate heat from the focusing lens module. The other end of the galvanometer cavity water channel is connected to one end of the focusing water channel. The other end of the focusing water channel is connected to one end of the outlet water channel. The other end of the outlet water channel is connected to the outlet interface.

2. The laser cutting head having a water cooling system structure according to claim 1, characterized in that: The number of galvanometer assemblies is two. Each galvanometer assembly includes a galvanometer mounting bracket, a drive motor, and a galvanometer reflector. The drive motor can drive the galvanometer reflector to rotate. The two galvanometer assemblies are a first galvanometer assembly and a second galvanometer assembly. The first galvanometer assembly has a first motor water channel on its mounting bracket, and the second galvanometer assembly has a second motor water channel on its mounting bracket. The first motor water channel can dissipate heat from the drive motor of the first galvanometer assembly. The first motor water channel is located between the galvanometer cavity water channel and the first drainage water channel. The other end of the first drainage water channel is connected to one end of the first motor water channel, and the other end of the first motor water channel is connected to one end of the galvanometer cavity water channel. The second motor water channel can dissipate heat from the drive motor of the second galvanometer assembly. The second motor water channel is located between the focusing water channel and the outlet water channel. The other end of the focusing water channel is connected to one end of the second motor water channel, and the other end of the second motor water channel is connected to one end of the outlet water channel.

3. The laser cutting head having a water cooling system structure according to claim 2, characterized in that: The galvanometer housing also houses a beam combiner assembly and an industrial camera. The beam combiner assembly reflects light reflected by the galvanometer assembly into the focusing lens module. A beam combiner water channel is provided on the side of the beam combiner assembly to dissipate heat. The beam combiner water channel is located between the galvanometer cavity water channel and the focusing water channel. One end of the galvanometer cavity water channel is connected to one end of the beam combiner water channel, and the other end of the beam combiner water channel is connected to one end of the focusing water channel.

4. The laser cutting head having a water cooling system structure according to claim 3, characterized in that: A second water channel is also provided on the right side of the galvanometer housing. The second water channel can cooperate with the water channel of the galvanometer cavity to dissipate heat from the galvanometer housing. The second water channel is located between the beam-combining water channel and the focusing water channel. The other end of the beam-combining water channel is connected to one end of the second water channel, and the other end of the second water channel is connected to one end of the focusing water channel.

5. The laser cutting head having a water cooling system structure according to claim 2, characterized in that: A third water channel is provided on the lower end face of the galvanometer housing. The third water channel can dissipate heat from the galvanometer housing. The third water channel is located between the focusing water channel and the second motor water channel. The other end of the focusing water channel is connected to one end of the third water channel, and the other end of the third water channel is connected to one end of the second motor water channel.

6. The laser cutting head having a water cooling system structure according to claim 5, characterized in that: The lower end face of the galvanometer housing is also provided with a fourth water channel, which can dissipate heat from the galvanometer housing. The fourth water channel is located between the second motor water channel and the outlet water channel. The other end of the second motor water channel is connected to one end of the fourth water channel, and the other end of the fourth water channel is connected to one end of the outlet water channel.

7. The laser cutting head having a water cooling system structure according to claim 6, characterized in that: A fifth water channel is also provided on the rear side of the galvanometer housing. The fifth water channel is located between the fourth water channel and the outlet water channel. The other end of the fourth water channel is connected to one end of the fifth water channel, and the other end of the fifth water channel is connected to one end of the outlet water channel. The fifth water channel can dissipate heat from the galvanometer housing.

8. The laser cutting head with water cooling system structure according to any one of claims 1-7, characterized in that: The rear side of the galvanometer housing is provided with a water channel plate and a rear water channel sealing plate provided on the water channel plate. The water inlet channel, the first diversion channel, the water outlet channel, the water inlet interface and the water outlet interface are all provided on the water channel plate. The water channel plate is provided with a first diversion groove, which can cooperate with the inner surface of the rear water channel sealing plate to form the first diversion channel.

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