Air-cooled laser cutting mechanism

Abstract

The present application belongs to the technical field of laser cutting, and discloses an air-cooled laser cutting mechanism, including a laser output head and a laser cutting head, wherein the laser output head includes an output head and a mounting seat arranged outside the output head, a connecting seat is arranged outside the mounting seat, a first cooling cavity is formed between the connecting seat and the mounting seat, the connecting seat is provided with a first air inlet and a first air outlet, and the mounting seat is provided with a first refrigeration component; the laser cutting head includes a collimating body, a focusing body and a cutting head, a second cooling cavity and a second air inlet are arranged on the side of the focusing body, the focusing body is provided with a second refrigeration component, a third cooling cavity and a second air outlet are arranged on the side of the collimating body, a baffle structure is arranged in the third cooling cavity, after the gas enters the third cooling cavity, it is baffled and flows to the second air outlet under the action of the baffle structure, and the first air outlet is connected with the second air inlet through an air pipe, thereby reducing the floor space occupied by the laser cutting machine and reducing the use cost.

Description

Technical Field

[0001] The present application belongs to the technical field of laser cutting, and specifically relates to an air-cooled laser cutting mechanism. Background Art

[0002] The laser cutting machine focuses the laser emitted from the laser into a high-power density laser beam through the optical path system and irradiates it to the surface of the workpiece, so that the surface of the workpiece reaches the melting point or boiling point. At the same time, the high-pressure gas coaxial with the laser beam blows away the molten or vaporized metal. As the relative position of the laser beam and the workpiece moves, a cut is eventually formed on the workpiece, thereby achieving the purpose of cutting.

[0003] With the rapid development of the laser cutting industry, the power of laser cutting machines has been continuously improved, which has led to a sharp increase in the heat generated by the laser cutting machines during operation. In order to ensure the normal operation of the laser cutting machines, it is usually necessary to configure a cooling mechanism for the laser cutting mechanism of the laser cutting machine to maintain the laser cutting mechanism at an optimal temperature for operation; however, currently, water cooling is basically used to cool the laser cutting mechanism. Since water cooling is used to cool the laser cutting mechanism, a water tank for storing coolant needs to be configured for it, resulting in a large footprint of the existing laser cutting machine. At the same time, users are required to regularly refill the water tank with coolant, thereby increasing the use cost of the laser cutting machine. Summary of the invention

[0004] The present application provides an air-cooled laser cutting mechanism to reduce the floor space occupied by a laser cutting machine and reduce the use cost of the laser cutting machine, so as to improve the user experience.

[0005] The technical solution adopted in this application is:

[0006] An air-cooled laser cutting mechanism, comprising:

[0007] A laser output head, the laser output head comprising an output head and a mounting seat arranged outside the output head, a connecting seat being arranged outside the mounting seat, a first cooling cavity being formed between the connecting seat and the mounting seat, the connecting seat being provided with a first air inlet and a first air outlet, the first air inlet and the first air outlet being both arranged in communication with the first cooling cavity, the mounting seat being provided with a first cooling element located in the first cooling cavity, the first cooling element being capable of cooling the mounting seat;

[0008] A laser cutting head, the laser cutting head comprises a collimating body arranged at the bottom of the connecting seat, a focusing body arranged at the bottom of the collimating body and a cutting head arranged at the bottom of the focusing body, a second cooling cavity and a second air inlet connected to the second cooling cavity are arranged on the side of the focusing body, the focusing body is provided with a second refrigeration component located in the second cooling cavity, the second refrigeration component can cool the focusing body, a third cooling cavity connected to the second cooling cavity and a second air outlet connected to the third cooling cavity are arranged on the side of the collimating body, a deflection structure is arranged in the third cooling cavity, so that after the gas enters the third cooling cavity, it will be deflected and flow to the second air outlet under the action of the deflection structure, and the first air outlet is connected to the second air inlet through an air pipe.

[0009] By adopting the above technical solution, when using the air-cooled laser cutting mechanism in the present application, the external air supply device is connected to the first air inlet, so that the gas generated by the air supply device enters the first cooling cavity through the first air inlet, and the first refrigeration component cools the mounting seat to increase the temperature difference between the mounting seat and the output head, thereby allowing the heat generated by the output head to be quickly transferred to the mounting seat, and the heat of the mounting seat is exchanged with the gas entering the first cooling cavity, so that the airflow formed by the gas takes away the heat in the first cooling cavity, and then the airflow enters the second cooling cavity through the first air outlet, the air pipe and the second air inlet. The second cooling component cools the focusing body so that the heat generated by the focusing body is quickly transferred to the second cooling component, and the airflow entering the second cooling chamber enters the third cooling chamber after heat exchange with the second cooling component and the focusing body. The airflow entering the third cooling chamber makes a back movement in the third cooling chamber under the action of the deflection structure and flows to the second air outlet to extend the flow path of the airflow in the third cooling chamber, thereby increasing the heat exchange time between the airflow and the collimation body to improve the cooling effect on the collimation body, and finally the airflow is discharged through the second air outlet to complete the cooling of the air-cooled laser cutting mechanism.

[0010] By setting the first refrigeration element and the first cooling cavity, the cooling efficiency of the output head is greatly improved, so as to greatly avoid the phenomenon that the optical fiber at the tail of the output head melts at high temperature and adheres to the inner wall of the mounting seat, thereby greatly increasing the service life of the air-cooled laser cutting mechanism.

[0011] In addition, compared with the solution of using water cooling to cool the laser output head and the laser cutting head in the prior art, it avoids the need to configure a water tank for the laser cutting machine and replenish coolant. On the one hand, it reduces the footprint of the laser cutting machine, and on the other hand, it reduces the user's usage cost, thereby greatly improving the user experience.

[0012] Optionally, a first heat dissipation fin is disposed on the outside of the mounting seat, a receiving groove is disposed on the side of the mounting seat facing the first heat dissipation fin, a positioning groove is disposed on the side of the first heat dissipation fin facing the mounting seat, part of the first refrigeration component is located in the receiving groove, and the remaining part of the first refrigeration component is located in the positioning groove.

[0013] By adopting the above technical scheme, since the first cooling fins are provided on the outside of the mounting seat, the heat of the first refrigeration component can be quickly transferred to the first cooling fins, so as to utilize the first cooling fins to exchange heat with the airflow in the first cooling chamber to increase the heat exchange area with the airflow, thereby greatly improving the cooling efficiency and cooling effect of the output head, so as to further reduce the temperature of the output head, and further improve the service life of the air-cooled laser cutting head; and part of the first refrigeration component is located in the accommodating groove, and the remaining part of the first refrigeration component is located in the positioning groove, on the one hand, the contact area between the first refrigeration component and the mounting seat and the first cooling fins is increased, so as to improve the heat exchange efficiency between the first refrigeration component and the mounting seat and the first cooling fins, thereby improving the cooling efficiency and cooling effect of the output head, and on the other hand, the stability of the first refrigeration component is increased, and the positioning of the first cooling fins is also realized, thereby achieving the effect of facilitating the installation of the first refrigeration component and the first cooling fins, so as to greatly improve the production efficiency of the air-cooled laser cutting mechanism.

[0014] Optionally, the connecting seat is provided with an exhaust hole connected to the first cooling cavity and a blocking structure for blocking the exhaust hole, and the blocking structure can open or close the exhaust hole according to the change of air pressure in the first cooling cavity.

[0015] By adopting the above technical scheme, when using an air-cooled laser cutting mechanism, the output air pressure of the air supply device can be adjusted according to the output power of the air-cooled laser cutting mechanism, thereby realizing the adjustment of the air pressure in the first cooling chamber. Since the connecting seat is provided with an exhaust hole connected to the first cooling chamber and a sealing structure for sealing the exhaust hole, and the sealing structure can open or close the exhaust hole according to the change of the air pressure in the first cooling chamber, then when the air pressure in the first cooling chamber is greater than the set value, the sealing structure opens the exhaust hole. At this time, part of the gas diameter in the first cooling chamber is discharged through the exhaust hole, and the remaining gas enters the second cooling chamber through the first air outlet, the air pipe and the second air inlet to cool the focusing body, so as to quickly take away the heat in the first cooling chamber, thereby greatly improving the cooling efficiency and cooling effect of the output head, so as to greatly reduce the temperature of the output head, so that the output head is kept working at a better temperature, so as to ensure the service life of the air-cooled laser cutting mechanism.

[0016] Optionally, the blocking structure includes a blocking cover adapted to the exhaust hole and an elastic member acting on the blocking cover, wherein the elastic member is used to apply an elastic force on the blocking cover toward the interior of the connecting seat.

[0017] By adopting the above technical solution, when the air pressure in the first cooling chamber is greater than the set value, the pressure exerted by the gas in the first cooling chamber on the sealing cover is greater than the elastic force exerted by the elastic member on the sealing cover, thereby causing the sealing cover to move toward the outside of the connecting seat. At this time, the sealing cover exerts pressure on the elastic member, the elastic member is deformed, the sealing cover opens the exhaust hole, and part of the gas in the first cooling chamber is discharged through the exhaust hole. When the air pressure in the first cooling chamber is lower than the set pressure, the pressure exerted by the gas in the first cooling chamber on the sealing cover is lower than the elastic force exerted by the elastic member on the sealing cover, thereby causing the sealing cover to move toward the inside of the connecting seat, so that the sealing cover blocks the exhaust hole to close the exhaust hole, thereby realizing the opening or closing of the exhaust hole according to the change of the air pressure in the first cooling chamber.

[0018] Optionally, the blocking structure also includes a guide column arranged on the blocking cover, a blocking rod is provided at one end of the guide column away from the blocking cover, a stop rib is provided on the wall of the exhaust hole, and the elastic member is a spring sleeved on the outside of the guide column, and both ends of the spring respectively abut against the stop rib and the blocking rod.

[0019] By adopting the above technical scheme, since the blocking rod is arranged at the end of the guide column away from the sealing cover, the elastic member is a spring sleeved on the outside of the guide column, and the two ends of the spring respectively resist the stop rib and the blocking rod, so that the stop rib can support the spring, so that the spring applies an elastic force toward the inside of the connecting seat to the sealing cover through the blocking rod to increase the stability of the spring, and the spring can also increase the stability of the sealing structure to open or close the exhaust hole following the change of air pressure in the first cooling chamber, and at the same time increase the stability of the sealing cover when closing the exhaust hole, so as to ensure the airtightness of the first cooling chamber and improve the airflow utilization rate; in addition, through the setting of the blocking rod, on the one hand, the spring applies an elastic force toward the inside of the connecting seat to the sealing cover through the blocking rod and the guide column, and on the other hand, the flow area of ​​the exhaust hole is guaranteed, so as to ensure the sensitivity of the sealing structure when opening or closing the exhaust hole following the change of air pressure in the first cooling chamber, thereby ensuring the rapid response of the blocking structure, and further improving the cooling effect and cooling efficiency of the output head.

[0020] Optionally, the exhaust hole has a sealing section capable of accommodating the sealing cover, the diameter of the sealing section gradually increases from the inside to the outside, and noise reduction cotton sleeved on the outside of the guide column is provided between the stop rib and the sealing section.

[0021] By adopting the above technical solution, since the diameter of the sealing section gradually increases from the inside to the outside, and the blocking cover is adapted to the sealing section, on the one hand, the contact area between the blocking cover and the exhaust hole can be increased to increase the sealing performance of the blocking cover when closing the exhaust hole, and on the other hand, the diameter of the external opening of the exhaust hole can be increased to achieve the effect of facilitating the blocking cover to extend into the sealing section. At the same time, the hole wall of the sealing section can also guide and adjust the blocking cover to make it easier for the blocking cover to extend into the sealing section and ensure the blocking effect of the blocking cover on the exhaust hole; and it can also make the blocking cover open the exhaust hole as long as it moves toward the outside of the connecting seat, so as to further improve the sealing effect. The blocking structure follows the response efficiency of the air pressure change in the first cooling chamber; in addition, a noise reduction cotton sleeved on the outside of the guide column is arranged between the stop rib and the sealing section, so that the gas discharged through the exhaust hole needs to pass through the noise reduction cotton to achieve the noise reduction function when the gas is discharged from the exhaust hole, so as to reduce the noise of the air-cooled laser cutting mechanism, so as to further improve the user experience; at the same time, the sealing section can also limit the sealing cover to avoid the phenomenon of squeezing the noise reduction cotton due to the large moving distance of the sealing cover toward the inside of the connecting seat, thereby ensuring the air permeability of the noise reduction cotton, so as to ensure the exhaust efficiency of the exhaust hole, and then ensure the cooling efficiency and cooling effect of the output head.

[0022] Optionally, the guide column has a limiting end away from the sealing cover, the limiting end can extend into the first cooling cavity, and the limiting end is hemispherical, and the first heat dissipation fin is extended with a positioning portion that can abut against the inner wall of the connecting seat, and the positioning portion is located at the bottom of the limiting end.

[0023] By adopting the above technical scheme, when installing the first heat dissipation fin, first align the first refrigeration component with the first refrigeration component, and then press the first fin downward to make the first cooling fin extend into the first cooling cavity, and one side of the first fin abuts against the mounting seat, and the positioning portion abuts against the inner wall of the connecting seat, and when the positioning portion moves to the limit end, the positioning portion abuts against the limit end, and then continues to apply downward pressure on the first heat dissipation fin. Since the limit end is hemispherical, the limit end moves toward the outside of the connecting seat under the pressure of the positioning portion, the spring is compressed, so that the limit end and the positioning portion form an avoidance, and finally the positioning portion passes over the limit end and is installed in place, and the follow-up limit end is reset under the action of the spring, so that the limit end is located at the top of the positioning portion, so as to cooperate with the stopper of the positioning portion in the vertical direction, thereby completing the fixation of the first cooling fin.

[0024] By setting the positioning portion, not only is the first heat sink fin limited in the radial direction of the connecting seat, but the positioning portion and the limiting end can also limit the first heat sink fin in the axial direction of the connecting seat, so as to increase the stability of the first heat sink fin, avoid the first heat sink fin from shaking in the first cooling chamber, and thus ensure the cooling efficiency and cooling effect of the output head.

[0025] Optionally, the first air inlet and the first air outlet are located on two adjacent sides or two opposite sides of the connecting seat, and one of the first air inlet and the first air outlet is located at the upper part of the connecting seat, and the other is located at the lower part of the connecting seat.

[0026] By adopting the above technical solution, since the first air inlet and the first air outlet are located on two adjacent sides or two opposite sides of the connecting seat, and one of the first air inlet and the first air outlet is located at the upper part of the connecting seat, and the other is located at the lower part of the connecting seat, the flow path of the gas in the first cooling chamber can be increased, so as to increase the heat exchange time between the gas and the mounting seat and the first refrigeration component, thereby increasing the cooling effect and cooling efficiency of the output head.

[0027] Optionally, the focusing body is provided with second heat dissipation fins located in the second cooling cavity, and the second heat dissipation fins are in contact with the outer side surface of the second refrigeration component.

[0028] By adopting the above technical solution, since the second heat dissipation fins are in contact with the outer side surface of the second refrigeration component, the heat of the second refrigeration component can be exchanged with the gas in the second cooling chamber through the second heat dissipation fins, so as to increase the heat exchange area between the two, thereby improving the cooling effect and cooling efficiency of the second refrigeration component, and further improving the heat dissipation effect and heat dissipation efficiency of the focusing body.

[0029] Optionally, a fourth cooling cavity, a third air inlet and the third air outlet are provided on the side of the focusing body, and the third air inlet and the third air outlet are both connected to the fourth cooling cavity. The focusing body is also provided with a third refrigeration component located in the fourth cooling cavity. The fourth cooling cavity is arranged opposite to the second cooling cavity, and the third air inlet is connected to the first air outlet through an air pipe.

[0030] By adopting the above technical solution, since the fourth cooling chamber is arranged relative to the second cooling chamber, the cooling efficiency and cooling effect of the focusing body are improved, and at the same time, the heat distribution of the focusing body is made more uniform to ensure the normal operation of the focusing body, thereby increasing the service life of the air-cooled laser cutting mechanism.

[0031] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0032] 1. The air-cooled laser cutting mechanism in the present application includes a laser output head and a laser cutting head. The laser output head includes an output head and a mounting seat arranged outside the output head. A connecting seat is arranged outside the mounting seat. A first cooling cavity is formed between the connecting seat and the mounting seat. The connecting seat is provided with a first air inlet and a first air outlet. The first air inlet and the first air outlet are both connected to the first cooling cavity. The mounting seat is provided with a first refrigeration element located in the first cooling cavity. The first refrigeration element can cool the mounting seat. The laser cutting head includes a collimating body arranged at the bottom of the connecting seat, a focusing body arranged at the bottom of the collimating body, and a cutting head arranged at the bottom of the focusing body. A second cooling cavity and a second air inlet connected to the second cooling cavity are arranged on the side of the focusing body. The focusing body is provided with A second cooling element is located in the second cooling chamber, and the second cooling element can cool the focusing body. A third cooling chamber connected to the second cooling chamber and a second air outlet connected to the third cooling chamber are provided on the side of the collimating body. A deflection structure is provided in the third cooling chamber, so that after the gas enters the third cooling chamber, it is deflected and flows back to the second air outlet under the action of the deflection structure. The first air outlet is connected to the second air inlet through an air pipe. Compared with the solution of using water cooling to cool the laser output head and the laser cutting head in the prior art, the need to configure a water tank for the laser cutting machine and replenish coolant is avoided. On the one hand, the footprint of the laser cutting machine is reduced, and on the other hand, the user's use cost is reduced, thereby greatly improving the user's use experience.

[0033] 2. In the present application, a first heat sink fin is arranged on the outside of the mounting seat, so that the heat of the first refrigeration component can be quickly transferred to the first heat sink fin, so as to utilize the first heat sink fin to exchange heat with the airflow in the first cooling chamber, so as to increase the heat exchange area with the airflow, thereby greatly improving the cooling efficiency and cooling effect of the output head, so as to further reduce the temperature of the output head, and further improve the service life of the air-cooled laser cutting head; a receiving groove is arranged on the side of the mounting seat facing the first heat sink fin, and a positioning groove is arranged on the side of the first heat sink facing the mounting seat, part of the first refrigeration component is located in the receiving groove, and the remaining part of the first refrigeration component is located in the positioning groove, on the one hand, the contact area between the first refrigeration component and the mounting seat and the first heat sink fin is increased, so as to improve the heat exchange efficiency between the first refrigeration component and the mounting seat and the first heat sink fin, thereby improving the cooling efficiency and cooling effect of the output head, on the other hand, the stability of the first refrigeration component is increased, and the positioning of the first heat sink fin is also realized, so as to achieve the effect of facilitating the installation of the first refrigeration component and the first heat sink fin, so as to greatly improve the production efficiency of the air-cooled laser cutting mechanism.

[0034] 3. The connecting seat in the present application is provided with an exhaust hole connected to the first cooling chamber and a sealing structure for sealing the exhaust hole. The sealing structure can open or close the exhaust hole according to the change of the air pressure in the first cooling chamber. When using the air-cooled laser cutting mechanism, the output air pressure of the air supply device can be adjusted according to the output power of the air-cooled laser cutting mechanism, and then the air pressure in the first cooling chamber is regulated. Since the connecting seat is provided with an exhaust hole connected to the first cooling chamber and a sealing structure for sealing the exhaust hole, and the sealing structure can open or close the exhaust hole according to the change of the air pressure in the first cooling chamber, when the air pressure in the first cooling chamber is greater than the set value, the sealing structure opens the exhaust hole. At this time, part of the gas in the first cooling chamber is discharged through the exhaust hole, and the remaining gas enters the second cooling chamber through the first air outlet, the air pipe and the second air inlet to cool the focusing body, so as to quickly take away the heat in the first cooling chamber, thereby greatly improving the cooling efficiency and cooling effect of the output head, so as to greatly reduce the temperature of the output head, so that the output head is kept working at a better temperature, so as to ensure the service life of the air-cooled laser cutting mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0036] Figure 1 This is a schematic structural diagram of the air-cooled laser cutting mechanism in one embodiment of the present application;

[0037] Figure 2 This is a schematic structural diagram from another perspective of the air-cooled laser cutting mechanism in one embodiment of the present application;

[0038] Figure 3 It is a partial structural exploded schematic diagram of the air-cooled laser cutting mechanism in one embodiment of the present application, mainly showing the output head;

[0039] Figure 4 This is a schematic structural diagram of the connecting socket in one embodiment of the present application;

[0040] Figure 5 for Figure 4 A magnified view of the middle A area;

[0041] Figure 6 It is a partial structural exploded schematic diagram of the air-cooled laser cutting mechanism in one embodiment of the present application, mainly showing the second cooling cavity and the third cooling cavity;

[0042] Figure 7 It is a partial structural exploded schematic diagram of the air-cooled laser cutting mechanism in one embodiment of the present application, mainly showing the fourth cooling chamber;

[0043] Figure 8 This is a structural schematic diagram from another perspective of the air-cooled laser cutting mechanism in one embodiment of the present application, in which the second sealing cover is hidden.

[0044] Reference numerals:

[0045] 1. output head; 11. cover plate; 2. mounting seat; 21. first cooling element; 22. first heat dissipation fin; 221. positioning groove; 222. positioning part; 23. containing groove; 3. connecting seat; 31. first cooling cavity; 32. first air inlet; 33. first air outlet; 34. exhaust hole; 341. stop rib; 4. collimating body; 41. third cooling cavity; 411. second sealing cover; 42. second air outlet; 43. baffle structure; 5. focusing body; 5 1. Second cooling chamber; 511. First sealing cover; 52. Second air inlet; 53. Second refrigeration element; 54. Second heat sink fin; 55. Fourth cooling chamber; 551. Third sealing cover; 56. Third air inlet; 57. Third air outlet; 58. Third refrigeration element; 59. Third heat sink fin; 6. Cutting head; 7. Sealing structure; 71. Sealing cover; 72. Elastic element; 73. Guide column; 731. Blocking rod; 732. Noise reduction cotton; 733. Limit end. DETAILED DESCRIPTION

[0046] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0047] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0048] In addition, in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, 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 application.

[0049] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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, an electrical connection, or a communication; 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 this application can be understood according to specific circumstances.

[0050] In the present application, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "implementation method", "example", "one embodiment", "example" or "specific example" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0051] Reference Figures 1 to 8 , discloses an air-cooled laser cutting mechanism, which includes a laser output head and a laser cutting head 6, wherein the laser output head includes an output head 1 and a mounting seat 2 arranged outside the output head 1, a connecting seat 3 is arranged outside the mounting seat 2, a first cooling cavity 31 is formed between the connecting seat 3 and the mounting seat 2, the connecting seat 3 is provided with a first air inlet 32 ​​and a first air outlet 33, the first air inlet 32 ​​and the first air outlet 33 are both connected to the first cooling cavity 31, the mounting seat 2 is provided with a first refrigeration component 21 located in the first cooling cavity 31, and the first refrigeration component 21 can cool the mounting seat 2.

[0052] The laser cutting head 6 includes a collimating body 4 arranged at the bottom of the connecting seat 3, a focusing body 5 arranged at the bottom of the collimating body 4 and a cutting head 6 arranged at the bottom of the focusing body 5. The side of the focusing body 5 is provided with a second cooling cavity 51 and a second air inlet 52 connected to the second cooling cavity 51. The focusing body 5 is provided with a second refrigeration component 53 located in the second cooling cavity 51. The second refrigeration component 53 can cool the focusing body 5. The side of the collimating body 4 is provided with a third cooling cavity 41 connected to the second cooling cavity 51 and a second air outlet 42 connected to the third cooling cavity 41. A deflection structure 43 is provided in the third cooling cavity 41, so that after the gas enters the third cooling cavity 41, it flows back to the second air outlet 42 under the action of the deflection structure 43. The first air outlet 33 is connected to the second air inlet 52 through an air pipe.

[0053] When using the air-cooled laser cutting mechanism in the present application, the external air supply device is connected to the first air inlet 32, so that the gas generated by the air supply device enters the first cooling chamber 31 through the first air inlet 32, and the first refrigeration component 21 cools the mounting seat 2 to increase the temperature difference between the mounting seat 2 and the output head 1, so that the heat generated by the output head 1 is quickly transferred to the mounting seat 2, and the heat of the mounting seat 2 is exchanged with the gas entering the first cooling chamber 31, so that the airflow formed by the gas takes away the heat in the first cooling chamber 31, and then the airflow enters the second cooling chamber 51 through the first air outlet 33, the air pipe and the second air inlet 52, and the second refrigeration component 53 The focusing body 5 is cooled so that the heat generated by the focusing body 5 is quickly transferred to the second cooling component 53, and the airflow entering the second cooling chamber 51 enters the third cooling chamber 41 after heat exchange with the second cooling component 53 and the focusing body 5. The airflow entering the third cooling chamber 41 is bent back in the third cooling chamber 41 by the deflection structure 43 and flows to the second air outlet 42 to extend the flow path of the airflow in the third cooling chamber 41, thereby increasing the heat exchange time between the airflow and the alignment body 4, so as to improve the cooling effect on the alignment body 4, and finally the airflow is discharged through the second air outlet 42 to complete the cooling of the air-cooled laser cutting mechanism.

[0054] By setting the first cooling element 21 and the first cooling chamber 31, the cooling efficiency of the output head 1 is greatly improved, so as to greatly avoid the phenomenon that the optical fiber at the tail of the output head 1 melts due to high temperature and adheres to the inner wall of the mounting seat 2, thereby greatly increasing the service life of the air-cooled laser cutting mechanism.

[0055] In addition, compared with the solution of using water cooling to cool the laser output head 1 and the laser cutting head 6 in the prior art, the need to configure a water tank for the laser cutting machine and replenish coolant is avoided. On the one hand, the footprint of the laser cutting machine is reduced, and on the other hand, the user's usage cost is reduced, thereby greatly improving the user experience.

[0056] Specifically, a cover plate 11 located outside the mounting seat 2 is disposed at the rear end of the output head 1 , and the cover plate 11 is connected to the connecting seat 3 so that the cover plate 11 seals the first cooling cavity 31 .

[0057] The present application does not specifically limit the structures of the first cooling element 21 and the second cooling element 53. Preferably, the first cooling element 21 and the second cooling element 53 are both semiconductor cooling sheets, and the cold end of the first cooling element 21 is attached to the outer wall of the mounting seat 2, and the cold end of the second cooling element 53 is attached to the cavity wall of the second cooling cavity 51 near the center of the focusing body 5. In other embodiments, the first cooling element 21 and the second cooling element 53 can also be other structures capable of cooling.

[0058] In a preferred embodiment, referring to Figure 3 and Figure 4 A first heat dissipation fin 22 is arranged on the outside of the mounting seat 2, a receiving groove 23 is arranged on the side of the mounting seat 2 facing the first heat dissipation fin 22, a positioning groove 221 is arranged on the side of the first heat dissipation fin 22 facing the mounting seat 2, part of the first refrigeration component 21 is located in the receiving groove 23, and the remaining part of the first refrigeration component 21 is located in the positioning groove 221.

[0059] Since the first heat dissipation fins 22 are arranged on the outside of the mounting base 2, the heat of the first refrigeration component 21 can be quickly transferred to the first heat dissipation fins 22, so as to utilize the first heat dissipation fins 22 to exchange heat with the airflow in the first cooling chamber 31, so as to increase the heat exchange area with the airflow, thereby greatly improving the cooling efficiency and cooling effect of the output head 1, so as to further reduce the temperature of the output head 1, thereby further improving the service life of the air-cooled laser cutting head 6.

[0060] In addition, part of the first refrigeration component 21 is located in the accommodating groove 23, and the remaining part of the first refrigeration component 21 is located in the positioning groove 221. On the one hand, the contact area between the first refrigeration component 21 and the mounting seat 2 and the first heat dissipation fins 22 is increased to improve the heat exchange efficiency between the first refrigeration component 21 and the mounting seat 2 and the first heat dissipation fins 22, thereby improving the cooling efficiency and cooling effect of the output head 1. On the other hand, the stability of the first refrigeration component 21 is increased, and the positioning of the first heat dissipation fins 22 is also realized, thereby achieving the effect of facilitating the installation of the first refrigeration component 21 and the first heat dissipation fins 22, thereby greatly improving the production efficiency of the air-cooled laser cutting mechanism.

[0061] Further, see Figure 4 and Figure 5 The connecting seat 3 is provided with an exhaust hole 34 connected to the first cooling cavity 31 and a blocking structure 7 for blocking the exhaust hole 34 . The blocking structure 7 can open or close the exhaust hole 34 according to the change of air pressure in the first cooling cavity 31 .

[0062] When using an air-cooled laser cutting mechanism, the output air pressure of the air supply device can be adjusted according to the output power of the air-cooled laser cutting mechanism, thereby realizing the adjustment of the air pressure in the first cooling chamber 31. Since the connecting seat 3 is provided with an exhaust hole 34 connected to the first cooling chamber 31 and a sealing structure 7 for sealing the exhaust hole 34, and the sealing structure 7 can open or close the exhaust hole 34 according to the change of the air pressure in the first cooling chamber 31, then when the air pressure in the first cooling chamber 31 is greater than the set value, the sealing structure 7 opens the exhaust hole 34. At this time, part of the gas diameter in the first cooling chamber 31 is discharged through the exhaust hole 34, and the remaining gas enters the second cooling chamber 51 through the first air outlet 33, the air pipe and the second air inlet 52 to cool the focusing body 5, so as to quickly take away the heat in the first cooling chamber 31, thereby greatly improving the cooling efficiency and cooling effect of the output head 1, so as to greatly reduce the temperature of the output head 1, so that the output head 1 is kept working at a better temperature, so as to ensure the service life of the air-cooled laser cutting mechanism.

[0063] The present application does not make any specific limitation on the blocking structure 7. Preferably, refer to Figure 4 and Figure 5 The blocking structure 7 includes a blocking cover 71 adapted to the exhaust hole 34 and an elastic member 72 acting on the blocking cover 71 , and the elastic member 72 is used to apply an elastic force on the blocking cover 71 toward the inside of the connecting seat 3 .

[0064] When the air pressure in the first cooling chamber 31 is greater than the set value, the pressure exerted by the gas in the first cooling chamber 31 on the blocking cover 71 is greater than the elastic force exerted by the elastic member 72 on the blocking cover 71, thereby causing the blocking cover 71 to move toward the outside of the connecting seat 3. At this time, the blocking cover 71 exerts pressure on the elastic member 72, the elastic member 72 is deformed, the blocking cover 71 opens the exhaust hole 34, and part of the gas in the first cooling chamber 31 is discharged through the exhaust hole 34. When the air pressure in the first cooling chamber 31 is less than the set pressure, the pressure exerted by the gas in the first cooling chamber 31 on the blocking cover 71 is less than the elastic force exerted by the elastic member 72 on the blocking cover 71, thereby causing the blocking cover 71 to move toward the inside of the connecting seat 3, so that the blocking cover 71 blocks the exhaust hole 34 to close the exhaust hole 34, thereby realizing the opening or closing of the exhaust hole 34 according to the change of the air pressure in the first cooling chamber 31.

[0065] Further, see Figure 4 and Figure 5 The blocking structure 7 also includes a guide column 73 arranged on the blocking cover 71, a blocking rod 731 is arranged at one end of the guide column 73 away from the blocking cover 71, a stop rib 341 is arranged on the wall of the exhaust hole 34, and the elastic member 72 is a spring sleeved on the outside of the guide column 73, and the two ends of the spring respectively abut against the stop rib 341 and the blocking rod 731.

[0066] Since the blocking rod 731 is arranged at the end of the guide column 73 away from the sealing cover 71, the elastic member 72 is a spring sleeved on the outside of the guide column 73, and the two ends of the spring respectively abut against the stop rib 341 and the blocking rod 731, so that the stop rib 341 can support the spring, so that the spring applies an elastic force toward the inside of the connecting seat 3 to the sealing cover 71 through the blocking rod 731 to increase the stability of the spring, and the spring can also increase the stability of the sealing structure 7 to open or close the exhaust hole 34 following the change of air pressure in the first cooling chamber 31, and at the same time, it also increases the stability of the sealing cover 71 when closing the exhaust hole 34, so as to ensure the airtightness of the first cooling chamber 31 and improve the airflow utilization rate.

[0067] In addition, through the setting of the blocking rod 731, on the one hand, the spring applies an elastic force toward the inside of the connecting seat 3 to the blocking cover 71 through the blocking rod 731 and the guide column 73, and on the other hand, the flow area of ​​the exhaust hole 34 is guaranteed to ensure the sensitivity of the blocking structure 7 when opening or closing the exhaust hole 34 following the change of the air pressure in the first cooling chamber 31, thereby ensuring the rapid response of the blocking structure 7, and further improving the cooling effect and cooling efficiency of the output head 1.

[0068] Preferably, a plurality of blocking rods 731 are arranged at intervals along the circumference of the guide column 73 to increase the supporting points for the spring, thereby increasing the stability of the spring.

[0069] The present application does not specifically limit the structure of the stop rib 341. Preferably, the stop rib 341 is continuously extended along the circumference of the exhaust hole 34 to increase the support point of the spring, thereby increasing the stability of the spring. At the same time, there is a gap between the inner circumference of the stop rib 341 and the guide column 73 to ensure that the gas can pass between the stop rib 341 and the guide column 73 and be discharged through the exhaust hole 34. In other implementation examples, the stop rib 341 can be a block structure arranged at intervals along the circumference of the exhaust hole 34.

[0070] Further, see Figure 4 and Figure 5 The exhaust hole 34 has a sealing section capable of accommodating the blocking cover 71, and the diameter of the sealing section gradually increases from the inside to the outside. A noise reduction cotton 732 sleeved on the outside of the guide column 73 is provided between the stop rib 341 and the sealing section.

[0071] It can be understood that the blocking cover 71 can be adapted to the sealing section, that is, the diameter of the blocking cover 71 is gradually increased in a direction away from the guide column 73 .

[0072] Since the diameter of the sealing section gradually increases from the inside to the outside, and the sealing cover 71 is adapted to the sealing section, on the one hand, the contact area between the sealing cover 71 and the exhaust hole 34 can be increased to increase the sealing performance of the exhaust hole 34 when the sealing cover 71 closes the exhaust hole 34. On the other hand, the diameter of the outer opening of the exhaust hole 34 can also be increased to facilitate the sealing cover 71 to extend into the sealing section. At the same time, the hole wall of the sealing section can also guide and adjust the sealing cover 71 to make it easier for the sealing cover 71 to extend into the sealing section and ensure the sealing effect of the sealing cover 71 on the exhaust hole 34.

[0073] Furthermore, the exhaust hole 34 can be opened as long as the sealing cover 71 moves toward the outside of the connecting seat 3, so as to further improve the response efficiency of the sealing structure 7 to the changes in air pressure in the first cooling chamber 31; in addition, a noise reduction cotton 732 is provided between the stop rib 341 and the sealing section and is sleeved on the outside of the guide column 73, so that the gas discharged through the exhaust hole 34 needs to pass through the noise reduction cotton 732, so as to achieve the noise reduction function of the exhaust hole 34 when the gas is discharged, so as to reduce the noise of the air-cooled laser cutting mechanism, so as to further improve the user experience; at the same time, the sealing section can also limit the sealing cover 71 to avoid the phenomenon that the noise reduction cotton 732 is squeezed due to the large moving distance of the sealing cover 71 toward the inside of the connecting seat 3, thereby ensuring the air permeability of the noise reduction cotton 732, so as to ensure the exhaust efficiency of the exhaust hole 34, and then ensure the cooling efficiency and cooling effect of the output head 1.

[0074] The present application does not specifically limit the fixing method of the first heat dissipation fin 22. Preferably, refer to Figure 4 and Figure 5 The guide column 73 has a limiting end 733 away from the blocking cover 71, the limiting end 733 can extend into the first cooling cavity 31, and the limiting end 733 is hemispherical, and the first heat dissipation fin 22 is extended to have a positioning portion 222 that can abut against the inner wall of the connecting seat 3, and the positioning portion 222 is located at the bottom of the limiting end 733.

[0075] When installing the first heat dissipation fin 22, first align the first heat dissipation fin 22 with the first refrigeration component 21, and then press the first heat dissipation fin 22 downward to make the first heat dissipation fin 22 extend into the first cooling cavity 31, and one side of the first heat dissipation fin 22 abuts against the mounting seat 2, and the positioning portion 222 abuts against the inner wall of the connecting seat 3, and when the positioning portion 222 moves to the limit end 733, the positioning portion 222 abuts against the limit end 733, and then continue to apply downward pressure to the first heat dissipation fin 22, so that The limit end 733 is hemispherical, so that the limit end 733 moves toward the outside of the connecting seat 3 under the pressure of the positioning part 222, and the spring is compressed so that the limit end 733 and the positioning part form an avoidance, and finally the positioning part 222 passes over the limit end 733 and is installed in place, and the follower limit end 733 is reset under the action of the spring, so that the limit end 733 is located at the top of the positioning part 222, so as to cooperate with the stopper of the positioning part 222 in the vertical direction, thereby completing the fixation of the first heat sink 22.

[0076] By setting the positioning portion 222, not only the first heat dissipation fin 22 is limited in the radial direction of the connecting seat 3, but the positioning portion 222 and the limiting end 733 can also cooperate to limit the first heat dissipation fin 22 in the axial direction of the connecting seat 3, so as to increase the stability of the first heat dissipation fin 22, avoid the first heat dissipation fin 22 from shaking in the first cooling chamber 31, and thus ensure the cooling efficiency and cooling effect of the output head 1.

[0077] The present application does not make any specific limitation on the structure of the positioning portion 222 . Preferably, the positioning portion 222 is an L-shaped sheet structure to increase the positioning effect on the first heat dissipation fin 22 , and can achieve stop cooperation between the positioning portion 222 and the limiting end 733 to increase the stability of the first heat dissipation fin 22 .

[0078] In other implementation examples, the first heat dissipation fins 22 may also be fixed by screws.

[0079] In other embodiments, the sealing structure 7 may further include a sealing cover 71 and a rubber band, one end of the rubber band is connected to the sealing cover 71 , and the other end of the rubber band is connected to the first heat dissipation fin 22 to apply an elastic force to the sealing cover 71 toward the inside of the connecting seat 3 .

[0080] In a preferred embodiment, referring to Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 7 and Figure 8The first air inlet 32 ​​and the first air outlet 33 are located on two adjacent sides or two opposite sides of the connecting seat 3, and one of the first air inlet 32 ​​and the first air outlet 33 is located at the upper part of the connecting seat 3, and the other is located at the lower part of the connecting seat 3.

[0081] Since the first air inlet 32 ​​and the first air outlet 33 are located on two adjacent sides or two opposite sides of the connecting seat 3, and one of the first air inlet 32 ​​and the first air outlet 33 is located at the upper part of the connecting seat 3, and the other is located at the lower part of the connecting seat 3, the flow path of the gas in the first cooling chamber 31 can be increased, so as to increase the heat exchange time between the gas and the mounting seat 2 and the first refrigeration component 21, thereby increasing the cooling effect and cooling efficiency of the output head 1.

[0082] It should be noted that the above-mentioned “the first air inlet 32 ​​and the first air outlet 33 are located on two adjacent side surfaces or two opposite side surfaces of the connecting seat 3” means that when the connecting seat 3 is square or other non-circular shapes, the first air inlet 32 ​​and the first air outlet 33 are located on two adjacent side surfaces or two opposite side surfaces of the connecting seat 3, and when the connecting seat 3 is circular, the first air inlet 32 ​​and the first air outlet 33 only need to be staggered on the busbar of the connecting seat 3.

[0083] Better, refer to Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 7 and Figure 8 The first air inlet 32 ​​is located at the lower part of the connecting seat 3, and the first air outlet 33 is located at the top of the connecting seat 3. Since the bottom of the output head 1 generates a large amount of heat, after the first air inlet 32 ​​is arranged at the lower part of the connecting seat 3, the gas can flow upward from the bottom of the first cooling chamber 31 to improve the cooling effect and cooling efficiency of the bottom of the output head 1.

[0084] In a preferred embodiment, referring to Figure 6 The focusing body 5 is provided with a second heat dissipation fin 54 located in the second cooling cavity 51 , and the second heat dissipation fin 54 contacts the outer side surface of the second refrigeration component 53 .

[0085] Since the second heat dissipation fins 54 are in contact with the outer side surface of the second cooling component 53, the heat of the second cooling component 53 can be exchanged with the gas in the second cooling chamber 51 through the second heat dissipation fins 54, so as to increase the heat exchange area between the two, thereby improving the cooling effect and cooling efficiency of the second cooling component 53, and further improving the heat dissipation effect and heat dissipation efficiency of the focusing body 5.

[0086] Specifically, the second heat dissipation fins 54 are disposed at the hot end of the second refrigeration component 53 .

[0087] In a preferred embodiment, referring to Figure 3 and Figure 7 A fourth cooling cavity 55, a third air inlet 56 and a third air outlet 57 are provided on the side of the focusing body 5. The third air inlet 56 and the third air outlet 57 are both connected to the fourth cooling cavity 55. The focusing body 5 is also provided with a third refrigeration component 58 located in the fourth cooling cavity 55. The fourth cooling cavity 55 is arranged opposite to the second cooling cavity 51, and the third air inlet 56 is connected to the first air outlet 33 through an air pipe.

[0088] Since the fourth cooling chamber 55 is arranged relative to the second cooling chamber 51, the cooling efficiency and cooling effect of the focusing body 5 are improved, and the heat distribution of the focusing body 5 is made more uniform to ensure the normal operation of the focusing body 5, thereby increasing the service life of the air-cooled laser cutting mechanism.

[0089] Better, refer to Figure 3 and Figure 7 The third air inlet 56 is located below the third air outlet 57 to increase the distance between the gas discharged through the third air outlet 57 and the cutting head 6, thereby reducing the influence of the gas discharged through the third air outlet 57 on the cutting, so as to ensure the cutting efficiency of the air-cooled laser cutting mechanism.

[0090] The present application does not make a specific limitation on the number of the first air outlets 33. Preferably, two first air outlets 33 are provided, one of which is connected to the second air inlet 52 through an air pipe, and the other first air outlet 33 is connected to the third air inlet 56 through an air pipe, and the two first air outlets 33 are respectively located on two opposite sides of the connecting seat 3, and two first air inlets 32 are provided, which are staggered with the first air outlets 33, that is, the first air inlet 32 ​​and the first air outlet 33 are respectively located on two adjacent sides of the connecting seat 3, so that the heat distribution of the mounting seat 2 is more uniform, so as to further improve the cooling effect and cooling efficiency of the output head 1.

[0091] In other embodiments, one first air outlet 33 and one first air inlet 32 ​​are each provided, and the first air inlet 32 ​​and the first air outlet 33 are respectively located on two opposite sides of the connecting base 3 .

[0092] The present application does not specifically limit the structure of the third cooling element 58. Preferably, the third cooling element 58 is a semiconductor cooling sheet to improve the cooling effect and cooling efficiency of the focusing body 5. In other embodiments, the third cooling element 58 can also be other structures capable of cooling the focusing body 5.

[0093] Further, see Figure 7The fourth cooling chamber 55 is provided with a third heat dissipation fin 59 in contact with the hot end of the third cooling element 58, so that the third cooling element 58 exchanges heat with the gas in the fourth cooling chamber 55 through the third heat dissipation fin 59 to increase the heat exchange area between the two, thereby greatly improving the cooling effect and cooling efficiency of the focusing body 5.

[0094] The present application does not make any specific limitation on the baffle structure 43. Preferably, refer to Figure 8 The baffle structure 43 is a folded wall structure integrally formed in the third cooling cavity 41, so that the baffle structure 43 can be formed by machining to reduce the difficulty of forming the baffle structure 43, thereby reducing the production cost of the air-cooled laser cutting mechanism and improving the production efficiency of the air-cooled laser cutting mechanism. In other embodiments, the baffle structure 43 can also be a guide rib separately provided in the third cooling cavity 41.

[0095] Reference Figure 1 In order to facilitate the installation of the second refrigeration component 53 and the second heat dissipation fins 54, the opening of the second cooling cavity 51 is located on the side of the focusing body 5, and the focusing body 5 is removably provided with a first sealing cover 511 for sealing the opening of the second cooling cavity 51, so as to facilitate the installation of the second refrigeration component 53 and the second heat dissipation fins 54.

[0096] Reference Figure 1 In order to facilitate the processing of the deflection structure 43, the cavity opening of the third cooling cavity 41 is located on the side of the collimating body 4, and the side of the collimating body 4 is detachably connected with a second sealing cover 411 for sealing the cavity opening of the third cooling cavity 41, so as to achieve the effect of facilitating the processing of the deflection structure 43.

[0097] Reference Figure 2 In order to facilitate the installation of the third refrigeration component 58 and the third heat dissipation fins 59, the cavity opening of the fourth cooling cavity 55 is located on the side of the focusing body 5, and the focusing body 5 is detachably connected with a third sealing cover 551 for sealing the fourth cooling cavity 55, so as to achieve the effect of facilitating the installation of the third refrigeration component 58 and the third heat dissipation fins 59.

[0098] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0099] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0100] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. An air-cooled laser cutting mechanism, characterized in that: include: A laser output head, the laser output head comprising an output head (1) and a mounting seat (2) arranged outside the output head (1); a connecting seat (3) is arranged outside the mounting seat (2); a first cooling cavity (31) is formed between the connecting seat (3) and the mounting seat (2); the connecting seat (3) is provided with a first air inlet (32) and a first air outlet (33); the first air inlet (32) and the first air outlet (33) are both arranged in communication with the first cooling cavity (31); the mounting seat (2) is provided with a first cooling element (21) located in the first cooling cavity (31); the first cooling element (21) can cool the mounting seat (2); A laser cutting head (6), the laser cutting head (6) comprising a collimating body (4) arranged at the bottom of the connecting seat (3), a focusing body (5) arranged at the bottom of the collimating body (4), and a cutting head (6) arranged at the bottom of the focusing body (5), a second cooling cavity (51) and a second air inlet (52) connected to the second cooling cavity (51) being arranged on the side of the focusing body (5), the focusing body (5) being provided with a second cooling element (53) located in the second cooling cavity (51), the second cooling element (53) being capable of The focusing body (5) is cooled; a third cooling cavity (41) connected to the second cooling cavity (51) and a second air outlet (42) connected to the third cooling cavity (41) are provided on the side of the collimating body (4); a deflection structure (43) is provided in the third cooling cavity (41) so that after the gas enters the third cooling cavity (41), it is deflected and flows back to the second air outlet (42) under the action of the deflection structure (43); and the first air outlet (33) is connected to the second air inlet (52) through an air pipe.

2. The air-cooled laser cutting mechanism according to claim 1, characterized in that: A first heat dissipation fin (22) is arranged outside the mounting seat (2), a receiving groove (23) is arranged on a side of the mounting seat (2) facing the first heat dissipation fin (22), a positioning groove (221) is arranged on a side of the first heat dissipation fin (22) facing the mounting seat (2), a portion of the first refrigeration component (21) is located in the receiving groove (23), and the remaining portion of the first refrigeration component (21) is located in the positioning groove (221).

3. The air-cooled laser cutting mechanism according to claim 2, characterized in that: The connecting seat (3) is provided with an exhaust hole (34) connected to the first cooling cavity (31) and a blocking structure (7) for blocking the exhaust hole (34); the blocking structure (7) is capable of opening or closing the exhaust hole (34) according to changes in air pressure in the first cooling cavity (31).

4. The air-cooled laser cutting mechanism according to claim 3, characterized in that: The blocking structure (7) comprises a blocking cover (71) adapted to the exhaust hole (34) and an elastic member (72) acting on the blocking cover (71), wherein the elastic member (72) is used to apply an elastic force to the blocking cover (71) in a direction toward the interior of the connecting seat (3).

5. The air-cooled laser cutting mechanism according to claim 4, characterized in that: The blocking structure (7) further comprises a guide column (73) arranged on the blocking cover (71); a blocking rod (731) is arranged at one end of the guide column (73) away from the blocking cover (71); a stop rib (341) is arranged on the hole wall of the exhaust hole (34); the elastic member (72) is a spring sleeved on the outside of the guide column (73); and two ends of the spring respectively contact the stop rib (341) and the blocking rod (731).

6. The air-cooled laser cutting mechanism according to claim 5, characterized in that: The exhaust hole (34) has a sealing section capable of accommodating the blocking cover (71), the diameter of the sealing section gradually increases from the inside to the outside, and a noise reduction cotton (732) sleeved on the outside of the guide column (73) is provided between the stop rib (341) and the sealing section.

7. The air-cooled laser cutting mechanism according to claim 5, characterized in that: The guide column (73) has a limiting end (733) away from the blocking cover (71), the limiting end (733) can extend into the first cooling cavity (31), and the limiting end (733) is hemispherical, and the first heat dissipation fin (22) is extended to have a positioning portion (222) that can abut against the inner wall of the connecting seat (3), and the positioning portion (222) is located at the bottom of the limiting end (733).

8. An air-cooled laser cutting mechanism according to any one of claims 1 to 7, characterized in that: The first air inlet (32) and the first air outlet (33) are located on two adjacent side surfaces or two opposite side surfaces of the connecting seat (3), and one of the first air inlet (32) and the first air outlet (33) is located at the upper part of the connecting seat (3), and the other is located at the lower part of the connecting seat (3).

9. An air-cooled laser cutting mechanism according to any one of claims 1 to 7, characterized in that: The focusing body (5) is provided with a second heat dissipation fin (54) located in the second cooling cavity (51), and the second heat dissipation fin (54) is in contact with the outer side surface of the second refrigeration component (53).

10. An air-cooled laser cutting mechanism according to any one of claims 1 to 7, characterized in that: A fourth cooling cavity (55), a third air inlet (56) and a third air outlet (57) are arranged on the side of the focusing body (5); the third air inlet (56) and the third air outlet (57) are both arranged in communication with the fourth cooling cavity (55); the focusing body (5) is also provided with a third refrigeration component (58) located in the fourth cooling cavity (55); the fourth cooling cavity (55) is arranged opposite to the second cooling cavity (51); and the third air inlet (56) is communicated with the first air outlet (33) through an air pipe.

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