Long-focus bottom suite structure with cooling gas circuit

Abstract

The utility model discloses a long-focus bottom suite structure with a cooling gas circuit. The long-focus bottom suite structure comprises a gas guide assembly, a ceramic ring and a nozzle, the gas guide assembly, the ceramic ring and the nozzle are sequentially connected; an axial air channel penetrating through the air guide assembly in the length direction of the air guide assembly is arranged in the air guide assembly, an annular air channel communicated with the axial air channel is further arranged between the air guide assembly and the ceramic ring, and the axial air channel comprises a main air channel, a first air inlet channel and a second air inlet channel, an included angle is formed between at least one part of the first air inlet channel and the second air inlet channel and the main air channel; cooling gas can be directly blown to the ceramic ring and the nozzle through the axial gas channel and the annular gas channel. By additionally arranging the cooling air path of the bottom suite, direct blowing cooling of the nozzle and the ceramic ring is achieved, the cooling efficiency of the nozzle and the ceramic ring is improved, overheating deformation of the nozzle and the ceramic ring in the using process is avoided, the machining precision and the product quality are guaranteed, the service life of the nozzle and the service life of the ceramic ring are prolonged, and cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of laser cutting devices, in particular to a telephoto bottom kit structure with a cooling air path. Background Art

[0002] In the prior art, when the laser tube cutting head is cutting at full power for a long time, the cutting head nozzle and ceramic ring are easily deformed by heat or even damaged and scrapped, which seriously affects the cutting accuracy and cutting effect. Frequent replacement of nozzles and ceramic rings will affect the continuity of cutting. In severe cases, it will also extend the construction period and cause unnecessary economic losses. At the same time, the bottom kit of the telephoto cutting head is slender as a whole, with high roughness requirements, high machining difficulty requirements, low yield rate and the need for customized tools, which increases costs.

[0003] This shows that the prior art still has certain defects. Utility Model Content

[0004] The purpose of the utility model is to provide a telephoto bottom kit structure with a cooling air path, so as to solve the problems that the existing laser tube cutting head is easily overheated and damaged when cutting at full power for a long time, affecting the processing efficiency, and the bottom kit of the telephoto cutting head is difficult to machine and has high cost.

[0005] To achieve the above object, the utility model provides a telephoto bottom kit structure with a cooling air path, comprising an air guide component, a ceramic ring and a nozzle; the air guide component, the ceramic ring and the nozzle are connected in sequence; an axial air channel penetrating the air guide component along its length direction is arranged inside the air guide component, and an annular air channel connected to the axial air channel is also arranged between the air guide component and the ceramic ring;

[0006] The axial air passage includes a main air passage and at least one air inlet passage connected to the main air passage, and an angle is formed between the air inlet passage and the main air passage. The cooling gas can be directly blown toward the ceramic ring and the nozzle through the axial air passage and the annular air passage.

[0007] As a preferred embodiment of the present application, the air guide component includes a main body and a guide column connected to the main body, the main body is provided with the air inlet duct and the first part of the main air duct, and the guide column is provided with the second part of the main air duct; the main body and the guide column are coaxially arranged, and the axis of the main body and the guide column and the middle part of the main body and the guide column are provided with laser channels.

[0008] As a preferred embodiment of the present application, it is characterized in that the first part and the second part are coaxially arranged, and along the airflow direction, the diameters of the first part and the second part gradually decrease.

[0009] As a preferred embodiment of the present application, along the air flow direction, the maximum diameter of the first part is 6 mm, and the minimum diameter of the second part is 4 mm.

[0010] As a preferred embodiment of the present application, the guide column adopts a split structure, including multiple segments.

[0011] As a preferred embodiment of the present application, a plurality of air distribution holes are provided at the end of the guide column along the air flow direction, one end of the air distribution hole is connected to the main airway, and the other end of the air distribution hole is connected to the annular airway.

[0012] As a preferred embodiment of the present application, the air dividing hole is trumpet-shaped; or, along the axial direction of the air dividing hole, the diameter of the air dividing hole first decreases and then increases.

[0013] As a preferred embodiment of the present application, the plurality of air distribution holes are evenly arranged around the circumference of the flow guide column.

[0014] As a preferred embodiment of the present application, the air guide assembly also includes an air guide ring. Along the air flow direction, the end side wall of the guide column is provided with a first external thread, and the air guide ring has a first internal thread that cooperates with the first external thread. The guide column and the air guide ring are connected through the cooperation between the first external thread and the first internal thread.

[0015] As a preferred embodiment of the present application, a ceramic ring mounting portion is further provided at the end of the guide column, and at least a portion of the ceramic ring is embedded in the ceramic ring mounting portion; an annular gap is surrounded by the ceramic ring and the air guide ring, and the annular gap constitutes the annular airway.

[0016] As a preferred embodiment of the present application, a plurality of exhaust holes are further provided at the end of the air guide ring along the air flow direction, and an angle is formed between the axis of the exhaust holes and the axis of the air guide ring, and the exhaust holes directly point to the nozzle.

[0017] As a preferred embodiment of the present application, the plurality of exhaust holes are evenly arranged around the circumference of the air guide ring, and along the air flow direction, the diameter of the exhaust holes first decreases and then increases.

[0018] As a preferred embodiment of the present application, a plurality of axial air passages are provided, and the plurality of axial air passages are evenly arranged around the circumference of the air guide component.

[0019] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0020] 1. By adding a cooling air path to the bottom kit, direct blowing and cooling of the nozzle and ceramic ring is achieved, which improves the cooling efficiency of the nozzle and ceramic ring and avoids overheating and deformation during use, which is beneficial to ensure processing accuracy, product quality, and extend the service life of the nozzle and ceramic ring, saving costs.

[0021] 2. By adjusting the airway structure, the intake speed, flow speed and exhaust speed of the cooling gas can be increased, which is beneficial to further improve the cooling efficiency of the nozzle and ceramic ring.

[0022] 3. The overall structure of the bottom kit in this application is simple, the connection between the various parts is convenient, and the length of the guide column can be adjusted to meet the usage requirements under different focal length conditions, and it has good versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0024] Figure 1 A schematic diagram of the structure of a bottom kit of a gas path to be cooled in an example;

[0025] Figure 2 A schematic diagram of a part of the structure of a first air inlet duct, a second air inlet duct and a main air duct in an example;

[0026] Figure 3 is a partial structural schematic diagram of the first air inlet duct, the second air inlet duct and the main air duct in another example;

[0027] Figure 4 This is a schematic diagram of the matching structure between the air guide ring, ceramic ring, guide column and nozzle in an example.

[0028] List of parts and reference numerals:

[0029] 1 main body, 10 axial air passage, 11 first air inlet passage, 12 second air inlet passage, 13 main air passage, 131 first part, 1311 auxiliary air inlet, 132 second part;

[0030] 2 guide column, 21 air holes, 22 ceramic ring mounting part;

[0031] 3 ceramic rings;

[0032] 4 air guide rings, 41 exhaust holes;

[0033] 5. Circular airway;

[0034] 6 nozzles;

[0035] 7 laser channels. DETAILED DESCRIPTION

[0036] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in combination with the accompanying drawings by way of examples.

[0037] It should be noted that many specific details are elaborated in the following description to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific implementation methods disclosed below.

[0038] In one example, referring to Figure 1 and Figure 2 As shown, the telephoto bottom with cooling air path in the utility model includes an air guide component, a ceramic ring 3 and a nozzle 6; the air guide component, the ceramic ring 3 and the nozzle 6 are sealed and connected in sequence; an axial air duct 10 is arranged inside the air guide component and passes through the air guide component along its length direction, and an annular air duct 5 connected to the axial air duct 10 is also arranged between the air guide component and the ceramic ring 3, and the cooling gas can be directly blown to the ceramic ring 3 and the nozzle 6 through the axial air duct 10 and the annular air duct 5; the axial air duct 10 includes a main air duct 13 and a first air inlet duct 11 and a second air inlet duct 12 connected to the main air duct 13; there is an angle between the first air inlet duct 11 and at least a part of the second air inlet duct 12 and the main air duct 13.

[0039] Continue to refer to Figure 2 As shown, the air guide assembly includes a main body 1 and a guide column 2 connected to the main body 1, the main body 1 is provided with a first air inlet 11, a second air inlet 12 and a first part 131 of the main air channel 13, and the guide column 2 is provided with a second part 132 of the main air channel 13; the main body 1 and the guide column 2 are coaxially arranged, and the axis of the main body 1 and the guide column 2 are provided with a laser channel 7 in the middle of the main body 1 and the guide column 2.

[0040] In a preferred example, referring to Figure 2 As shown, the first air inlet 11 forms an angle of 45° with the main air duct 13, and the second air inlet 12 forms an angle of 60° with the main air duct 13. This arrangement can increase the intake volume of cooling gas and also help increase the flow rate of cooling gas when it enters the main air duct 13, which helps improve the cooling efficiency.

[0041] In another example, referring to Figure 3 As shown, an auxiliary air inlet 1311 is provided at one end of the main air duct 13 connected to the first air inlet duct 11 and the second air inlet duct 12. The air intake amount of the cooling gas can be adjusted through the auxiliary air inlet 1311, and the auxiliary air inlet 1311 can also be used as an emergency air intake measure when the first air inlet duct 11 and / or the second air inlet duct 12 is blocked.

[0042] It should be noted here that the above examples are only preferred examples of the present application. The present application does not specifically limit the number and setting method of the air intake ducts, and it can also adopt more different setting methods other than the above examples.

[0043] At the same time, as a preferred embodiment of the present application, the first part 131 and the second part 132 are coaxially arranged, and along the airflow direction, the diameters of the first part 131 and the second part 132 gradually decrease. Preferably, along the airflow direction, the maximum diameter of the first part 131 is 6 mm, and the minimum diameter of the second part 132 is 4 mm. In the above scheme, the cross-sectional area of ​​the main airway 13 is gradually reduced by gradually reducing the diameter of the main airway 13, and the flow rate of the gas can be increased without changing the airflow rate, that is, the cooling gas can be accelerated in the main airway 13, thereby increasing the discharge speed of the cooling gas, and further improving the cooling effect and cooling efficiency of the cooling gas on the ceramic ring 3 and the nozzle 6.

[0044] It should be noted here that the present application does not specifically limit the structure of the guide column 2, and the guide column 2 can adopt an integrated structure or a segmented structure. In a preferred example, the guide column 2 adopts a segmented structure, so that the length of the guide column 2 can be adjusted by adjusting the number of segments to adapt to the use requirements of bottom kits with different focal lengths. Compared with the integrated structure, the segmented structure does not require mold manufacturing for guide columns 2 of various length specifications, which can save a lot of production costs.

[0045] It should also be noted that the present application does not make any specific limitation on the arrangement of the axial air duct 10. It may be arranged with only one axial air duct as described above, or multiple axial air ducts may be arranged around the circumference of the air guide component. The multiple axial air ducts 10 may be isolated from each other or interconnected. Of course, other more different arrangements may also be adopted.

[0046] Further, refer to Figure 1 and Figure 4As shown, the air guide assembly also includes an air guide ring 4. Along the airflow direction, the end side wall of the guide column 2 is provided with a first external thread, and the air guide ring 4 has a first internal thread that cooperates with the first external thread. The guide column 2 and the air guide ring 4 are connected by the cooperation between the first external thread and the first internal thread. The end of the guide column 2 is also provided with a ceramic ring mounting portion 22, and at least a part of the ceramic ring 3 is embedded in the ceramic ring mounting portion 22. There is an annular gap between the ceramic ring 3 and the air guide ring 4, and the annular gap constitutes an annular airway 5. Along the airflow direction, the end of the guide column 2 is also provided with a plurality of air distribution holes 21, one end of the air distribution hole 21 is connected to the main airway 13, and the other end of the air distribution hole 21 is connected to the annular airway 5. Preferably, the air distribution hole 21 is trumpet-shaped, so that the main airway 13 and the air distribution hole 21 can form a Laval nozzle structure, thereby increasing the flow rate of the cooling gas when entering the annular airway 5 and improving the cooling efficiency of the ceramic ring 3.

[0047] In the above scheme, the matching structure between the air guide ring 4, the guide column 2 and the ceramic ring 3 is simple and easy to assemble. There is an annular gap between the ceramic ring 3 and the air guide ring 4. The setting method of the annular airway 5 formed by the annular gap saves the need to open an airway on the air guide ring 4 and / or the ceramic ring 3, can greatly reduce the processing difficulty and can avoid the adverse effects of the opening of the airway on the structural strength of the air guide ring 4 and / or the ceramic ring 3.

[0048] Further, refer to Figure 4 As shown, along the airflow direction, a plurality of exhaust holes 41 are also provided at the end of the air guide ring 4, and the axis of the exhaust hole 41 forms an angle with the axis of the air guide ring 4, and the exhaust hole 41 directly points to the nozzle 6. Preferably, the plurality of exhaust holes 41 are evenly arranged around the circumference of the air guide ring 4, and along the airflow direction, the diameter of the exhaust hole 41 first decreases and then increases. With this structure, a Laval nozzle-like structure can also be formed in the exhaust hole, which is beneficial to increase the exhaust speed of the cooling gas, and improve the cooling effect and cooling efficiency of the nozzle.

[0049] The technical solution protected by the present utility model is not limited to the above-mentioned embodiments. It should be pointed out that the combination of the technical solution of any embodiment with the technical solution of one or more other embodiments is within the protection scope of the present utility model. Although the present utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to it based on the present utility model. Therefore, these modifications or improvements made without departing from the spirit of the present utility model are within the scope of protection claimed by the present utility model.

Claims

1. A telephoto bottom kit structure with a cooling air path, characterized in that: It comprises an air guide component, a ceramic ring and a nozzle; the air guide component, the ceramic ring and the nozzle are connected in sequence; an axial air passage penetrating the air guide component along its length direction is arranged inside the air guide component, and an annular air passage connected to the axial air passage is also arranged between the air guide component and the ceramic ring; The axial air passage includes a main air passage and at least one air inlet passage connected to the main air passage, and an angle is formed between the air inlet passage and the main air passage. The cooling gas can be directly blown toward the ceramic ring and the nozzle through the axial air passage and the annular air passage.

2. The telephoto bottom kit structure with cooling air path according to claim 1, characterized in that: The air guide component includes a main body and a guide column connected to the main body, the main body is provided with the air inlet duct and the first part of the main air duct, and the guide column is provided with the second part of the main air duct; the main body and the guide column are coaxially arranged, and the axis of the main body and the guide column and the middle part of the main body and the guide column are provided with laser channels.

3. The telephoto bottom kit structure with cooling air path according to claim 2, characterized in that: The first part and the second part are coaxially arranged, and along the airflow direction, the diameters of the first part and the second part gradually decrease.

4. The telephoto bottom kit structure with cooling air path according to claim 3, characterized in that: Along the air flow direction, the maximum diameter of the first part is 6 mm, and the minimum diameter of the second part is 4 mm.

5. The telephoto bottom kit structure with cooling air path as claimed in claim 3, characterized in that: The guide column adopts a split structure, including multiple sections.

6. The telephoto bottom kit structure with cooling air path according to claim 3, characterized in that: Along the airflow direction, a plurality of air distribution holes are also opened at the end of the guide column, one end of the air distribution hole is connected to the main air channel, and the other end of the air distribution hole is connected to the annular air channel.

7. The telephoto bottom kit structure with cooling air path according to claim 6, characterized in that: The air dividing hole is in a trumpet shape; or, along the axial direction of the air dividing hole, the diameter of the air dividing hole first decreases and then increases.

8. The telephoto bottom kit structure with cooling air path according to claim 6, characterized in that: The plurality of air distribution holes are evenly arranged around the circumference of the flow guide column.

9. The telephoto bottom kit structure with cooling air path according to claim 3, characterized in that: The air guide component also includes an air guide ring. Along the air flow direction, the end side wall of the guide column is provided with a first external thread, and the air guide ring has a first internal thread that cooperates with the first external thread. The guide column and the air guide ring are connected through the cooperation between the first external thread and the first internal thread.

10. The telephoto bottom kit structure with cooling air path according to claim 9, characterized in that: A ceramic ring mounting portion is also provided at the end of the guide column, and at least a portion of the ceramic ring is embedded in the ceramic ring mounting portion; an annular gap is surrounded between the ceramic ring and the air guide ring, and the annular gap constitutes the annular airway.

11. The telephoto bottom kit structure with cooling air path according to claim 10, characterized in that: Along the air flow direction, a plurality of exhaust holes are further provided at the end of the air guide ring, and an angle is formed between the axis of the exhaust holes and the axis of the air guide ring, and the exhaust holes directly point to the nozzle.

12. The telephoto bottom kit structure with cooling air path according to claim 11, characterized in that: The plurality of exhaust holes are evenly arranged around the circumference of the air guide ring, and along the air flow direction, the diameters of the exhaust holes first decrease and then increase.

13. The telephoto bottom kit structure with cooling air path according to claim 1, characterized in that: A plurality of axial air passages are provided, and the plurality of axial air passages are evenly arranged around the circumference of the air guide component.

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