Cooking machine device
By using a test device designed with multiple absorbers and reflectors, the problem of traditional devices being difficult to adapt to fiber lasers of different power was solved, achieving efficient absorption and reliable testing of fiber lasers.
Patent Information
- Application Number
- CN202423289205.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Traditional stress testing devices are difficult to adapt to fiber lasers of different power levels, resulting in stress testing of fiber lasers failing to meet the requirements for efficient beam absorption.
Design a testing device that, by splicing multiple absorbers, including a front absorber, a rear absorber, and a middle absorber, and by using a reflector and a cooling system, can adjust the number and area of the absorbers according to the power changes of the fiber laser to adapt to fiber lasers of different power.
It achieves full absorption of fiber lasers of different power, improves the adaptability of traditional devices, and enhances the efficiency and reliability of stress testing.
Smart Images
Figure CN223597159U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to laser machine technology field especially relates to a machine device. BACKGROUND
[0002] In order to guarantee the use reliability of the fiber laser, need before factory through the machine device carries out a certain time machine test, in the machine test, the machine device simulates the actual light emitting scene to the light absorption device long time light emitting aging test, because the light emitting power of the fiber laser is bigger and bigger currently, the traditional machine device has been unable to satisfy the absorption beam efficiency, it is difficult to adapt to different power fiber lasers. CONTENT OF THE UTILITY MODEL
[0003] The utility model discloses a machine device, aiming at improving the problem that it is difficult to adapt to different power fiber lasers.
[0004] To achieve the above object, the machine device provided by the utility model comprises a plurality of absorbing bodies spliced head to tail along a first direction, and the plurality of absorbing bodies comprise:
[0005] A front absorbing body has a first absorbing cavity for absorbing laser, and the front end of the front absorbing body has a laser inlet for laser to enter corresponding to the first absorbing cavity;
[0006] A rear absorbing body has a second absorbing cavity for absorbing laser; and
[0007] A mirror is arranged at the rear end of the rear absorbing body, and the side of the mirror close to the rear absorbing body has a reflecting surface.
[0008] In an embodiment, the plurality of absorbing bodies further comprise a middle absorbing body, the middle absorbing body has a middle absorbing cavity, and the middle absorbing body is located between the front absorbing body and the rear absorbing body.
[0009] In an embodiment, the middle absorbing body comprises a plurality of middle absorbing sub-bodies spliced head to tail, and the plurality of middle absorbing sub-bodies comprise at least two middle absorbing sub-bodies at both ends of the middle absorbing body, and the two middle absorbing sub-bodies are connected to the front absorbing body and the rear absorbing body respectively.
[0010] In an embodiment, the side of the mirror away from the laser inlet has a heat dissipation fin; and / or
[0011] The machine device further comprises a water supply pipe and a water outlet pipe, the side of the mirror away from the laser inlet is formed with a cooling liquid cavity, and the water supply pipe and the water outlet pipe are in communication with the cooling liquid cavity.
[0012] In an embodiment, the machine testing device further comprises a front section shell arranged outside the front section absorber, and a first cooling liquid flow channel is formed between the inner side of the front section shell and the outer side of the front section absorber.
[0013] In an embodiment, the machine testing device further comprises a water supply pipe and a water outlet pipe, and the water supply pipe and the water outlet pipe are in communication with the first cooling liquid flow channel.
[0014] In an embodiment, the machine testing device further comprises a middle section shell arranged outside the corresponding middle section absorber, and a second cooling liquid flow channel is formed between the inner side of the middle section shell and the outer side of the middle section absorber.
[0015] In an embodiment, the machine testing device further comprises a water supply pipe and a water outlet pipe, and the water supply pipe and the water outlet pipe are in communication with the second cooling liquid flow channel.
[0016] In an embodiment, the machine testing device further comprises a rear section shell arranged outside the rear section absorber, and a third cooling liquid flow channel is formed between the inner side of the rear section shell and the outer side of the rear section absorber.
[0017] In an embodiment, the machine testing device further comprises a water supply pipe and a water outlet pipe, and the water supply pipe and the water outlet pipe are in communication with the third cooling liquid flow channel.
[0018] The technical scheme of the utility model connects multiple section absorbers in a splicing mode, when the power of the fiber laser to be subjected to machine testing experiment is changed, the number of the absorbers can be changed to adapt to the fiber laser of the corresponding power to complete sufficient absorption of the laser of the fiber laser; overall, by changing the number of the absorbers, the fiber laser of different powers can be adapted, and the problem that the fiber laser of different powers is difficult to adapt is improved. BRIEF DESCRIPTION OF DRAWINGS
[0019] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative labor.
[0020] Figure 1 The structural schematic diagram of the machine testing device in an embodiment of the utility model is provided.
[0021] Figure 2 The structural schematic diagram of the machine testing device in an embodiment of the utility model is provided. Figure 1 The partial sectional view along A-A is shown.
[0022] Figure 3 is Figure 1 the internal structure schematic view in figure 1;
[0023] Figure 4 is Figure 1 the structure schematic view of the reflector in figure 2;
[0024] Figure 5 is Figure 1 the structure schematic view of the reflector in figure 3 from another perspective;
[0025] Figure 6 is Figure 1 the structure schematic view of the confluence valve in figure 4.
[0026] BRIEF DESCRIPTION OF DRAWINGS
[0027] 1, the front section of the absorber; 11, the first spiral groove; 2, the middle section of the absorber; 21, the second spiral groove; 22, the middle section of the absorber; 3, the rear section of the absorber; 31, the third spiral groove; 32, the second flow guide groove; 4, the reflector; 41, the heat dissipation fin; 42, the cooling liquid cavity; 43, the first flow guide groove; 5, the water supply pipe; 6, the water outlet pipe; 7, the front section of the shell; 71, the first cooling liquid flow channel; 72, the first sealing ring; 73, the connecting seat; 74, the adapter plate; 75, the second sealing ring; 76, the third water inlet pipe; 77, the third water outlet pipe; 8, the middle section of the shell; 81, the second cooling liquid flow channel; 82, the middle section of the shell; 83, the third sealing ring; 84, the fourth sealing ring; 85, the second water inlet pipe; 86, the second water outlet pipe; 9, the rear section of the shell; 91, the third cooling liquid flow channel; 92, the fifth sealing ring; 93, the first water outlet pipe; 94, the sealing plate; 10, the confluence valve; 101, the confluence joint;
[0028] The implementation, functional features and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION
[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.
[0030] It should be noted that if the embodiments of the utility model have directionality indication (such as up, down, left, right, front, back, etc.), the directionality indication is only used to explain the relative position relationship, movement condition, etc. between components in a certain posture, if the certain posture changes, then the directionality indication also changes accordingly.
[0031] In addition, if the embodiments of the utility model have descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously satisfy the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled personnel in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.
[0032] In order to guarantee the use reliability of the fiber laser, it is necessary to carry out a certain time of burning test through the burning device before leaving the factory, in the burning test, the burning device simulates the actual light emitting scene to carry out long time light emitting aging test on the light absorbing device, since the light emitting power of the fiber laser is getting larger and larger at present, the traditional burning device cannot satisfy the efficiency of absorbing the light beam, and it is difficult to adapt to fiber lasers of different power.
[0033] The utility model provides a kind of burning device.
[0034] Please refer to Figure 1 、 Figure 2 And Figure 3 In an embodiment of the utility model, the burning device includes a plurality of absorbing bodies spliced head-to-tail along a first direction, and the plurality of absorbing bodies include:
[0035] The front absorbing body 1 has a first absorption cavity for absorbing laser, and the front end of the front absorbing body 1 is provided with a laser inlet for laser to enter;
[0036] The rear absorbing body 3 has a second absorption cavity for absorbing laser;
[0037] The mirror 4 is arranged at the rear end of the rear absorbing body 3, and the mirror 4 has a reflecting surface close to one side of the rear absorbing body 3.
[0038] The technical scheme of the utility model discloses connects the multi -section absorption body through the splicing mode, when the power of the fiber laser to be carried out the machine experiment of copying can be changed, the number of the absorption body is changed, adapts to the fiber laser of corresponding power, completes the sufficient absorption of the laser of the fiber laser, as a whole, the number of the absorption body is changed, can adapt to the fiber laser of different power, as a whole, the problem that the fiber laser of different power is difficult to adapt is improved.
[0039] The multi-section absorption body further includes a middle-section absorption body 2, the middle-section absorption body has a middle-section absorption cavity, and the middle-section absorption body 2 is located between the front-section absorption body 1 and the rear-section absorption body 3.By setting the middle-section absorption body 2, the machine device can adapt to the fiber laser of larger power; further, by replacing different middle-section absorption bodies 2, the area of the middle-section absorption cavity of the laser machine device can be changed, and different fiber lasers can be adapted.
[0040] In the embodiment of the application, the materials of the front-section absorption body 1, the middle-section absorption body 2 and the rear-section absorption body 3 are all aluminum alloy; and the cooling liquid is preferably water.
[0041] Specifically, the length direction of the multi-section absorption body extends along a first direction, thereby ensuring that the laser passes through the multi-section absorption body in sequence along the first direction.The first absorption cavity is the inner cavity of the front-section absorption body 1.The middle-section absorption cavity is the inner cavity of the middle-section absorption body 2.The second absorption cavity is the inner cavity of the rear-section absorption body 3.
[0042] The middle-section absorption body 2 includes a plurality of middle-section absorption sub-bodies 22 connected in a head-to-tail manner, the plurality of middle-section absorption sub-bodies 22 include at least two middle-section absorption sub-bodies 22 at both ends of the middle-section absorption body 2, and the two middle-section absorption sub-bodies 22 are connected to the front-section absorption body 1 and the rear-section absorption body 3 respectively.By changing the number of the middle-section absorption sub-bodies 22, the length of the middle-section absorption body 2 can be changed, so as to change the absorption area of the middle-section absorption cavity, adapt to the laser of corresponding power, and realize the absorption of the laser of corresponding power.
[0043] Please refer to Figure 2 、 Figure 4 and Figure 5 , the mirror 4 is provided corresponding to the laser entrance, and the side of the mirror 4 away from the laser entrance has heat dissipation fins 41.The axis of the mirror 4 is parallel to the first direction, the mirror 4 has a reflecting surface on the side close to the laser entrance, the reflecting surface is a convex surface, and after the laser is irradiated onto the reflecting surface, part of the laser can be reflected to the first absorption cavity, the second absorption cavity and the middle-section absorption cavity; after the mirror 4 absorbs the laser, the temperature rises, and the heat dissipation fins 41 can accelerate the heat dissipation of the mirror 4.
[0044] The said machine device further comprises a front shell 7, which is fixedly sleeved on the front absorbing body 1, the front end of the front shell 7 is flush with the front end of the front absorbing body 1, the front end of the front absorbing body 1 is detachably connected with a first sealing ring 72, a sealing ring is arranged between the front end of the first sealing ring 72 and the front end of the front shell 7, and the first sealing ring 72 and the front shell 7 are detachably and sealingly connected. A sealing ring is arranged between the first sealing ring 72 and the front end of the front absorbing body 1. The front end of the front shell 7 is formed with a first light transmission hole for transmitting laser, and the opening direction of the first light transmission hole is along the first direction.
[0045] Please refer to Figure 1 , Figure 2 and Figure 3 , the front side of the first sealing ring 72 is detachably installed with a connecting seat 73 through screws, the connecting seat 73 is provided with a second light transmission hole for inserting the laser head of the fiber laser, the opening direction of the second light transmission hole is along the first direction, the front side of the connecting seat 73 is detachably installed with an adapter plate 74, the adapter plate 74 is provided with a through hole, and the through hole is used for the laser head of the fiber laser to pass through. The adapter plate 74 is used for connecting the clamp of the output cable of the fiber laser, by replacing different adapter plates 74, different clamps of the fiber laser can be adapted.
[0046] The rear end of the front absorbing body 1 is detachably connected with a second sealing ring 75, a sealing ring is arranged between the second sealing ring 75 and the front end of the front shell 7, the second sealing ring 75 is detachably and fixedly connected with the rear end of the front absorbing body 1, and a sealing ring is arranged between the second sealing ring 75 and the front absorbing body 1.
[0047] The said machine device further comprises a middle section shell 8, which is arranged outside the corresponding middle section absorbent body 2, and comprises one or more middle section shell parts 82, the number of which is arranged according to the middle section absorbent parts 22, and each of which is arranged corresponding to the middle section absorbent parts 22. The front end of the middle section absorbent part 22 is detachably and fixedly installed with a third sealing ring 83, and a sealing ring is arranged between the third sealing ring 83 and the middle section absorbent part 22, and the third sealing ring 83 is detachably and fixedly connected with the middle section absorbent body 2, and a sealing ring is arranged between the third sealing ring 83 and the middle section absorbent body 2. The rear end of the middle section absorbent part 22 is detachably and fixedly installed with a fourth sealing ring 84, and a sealing ring is arranged between the fourth sealing ring 84 and the middle section absorbent part 22, and the fourth sealing ring 84 is detachably and fixedly connected with the middle section absorbent body 2, and a sealing ring is arranged between the fourth sealing ring 84 and the middle section absorbent body 2.
[0048] The said machine device further comprises a rear section shell 9, which is arranged outside the rear section absorbent body 3, and the front end of the rear section absorbent body 3 is detachably and fixedly and sealingly installed with a fifth sealing ring 92, and the fifth sealing ring 92 is detachably and sealingly connected with the rear section shell 9.
[0049] When the middle section shell 8 comprises one middle section shell part 82, the second sealing ring 75 and the third sealing ring 83 are detachably and fixedly connected, and a sealing ring is arranged between the second sealing ring 75 and the third sealing ring 83. The fourth sealing ring 84 and the fifth sealing ring 92 are detachably and fixedly connected, and a sealing ring is arranged between the fourth sealing ring 84 and the fifth sealing ring 92.
[0050] When the middle section shell 8 comprises a plurality of middle section shell parts 82, a sealing ring is arranged between the third sealing ring 83 and the fourth sealing ring 84 between adjacent middle section shell parts 82, so that the first adjacent middle section shell parts 82 are detachably connected. The second sealing ring 75 and the adjacent third sealing ring 83 are detachably and fixedly connected, and a sealing ring is arranged between the second sealing ring 75 and the adjacent third sealing ring 83. The fifth sealing ring 92 and the adjacent fourth sealing ring 84 are detachably and fixedly connected, and a sealing ring is arranged between the fifth sealing ring 92 and the adjacent fourth sealing ring 84.
[0051] The machine device also includes a water supply pipe 5 and a water outlet pipe 6, the mirror 4 is formed with a cooling liquid cavity 42 away from the laser entrance side, the water supply pipe 5 and the water outlet pipe 6 are communicated with the cooling liquid cavity 42, and specifically, the water supply pipe 5 and the water outlet pipe 6 are indirectly communicated with the cooling liquid cavity 42. Specifically, the rear end of the rear shell 9 is detachably and sealingly connected with a sealing plate 94, the sealing plate 94 is located in the rear shell 9, the mirror 4 is concave away from the laser entrance side, and the cooling liquid cavity 42 is formed between the sealing plate 94 and the side of the mirror 4 away from the laser entrance side. The water supply pipe 5 is sealingly and penetratingly arranged on the sealing plate 94, the cooling liquid can be injected into the cooling liquid cavity 42 through the water supply pipe 5, so that the heat dissipation effect of the heat dissipation fin 41 is improved, and the heat dissipation fin 41 can be continuously cooled by discharging the cooling liquid in the cooling liquid cavity 42 into the water outlet pipe 6.
[0052] The mirror 4 can be conveniently replaced by disassembling the sealing plate 94.
[0053] The rear shell 9 is arranged outside the rear absorption body 3, and a third cooling liquid flow channel 91 is formed between the inner side of the rear shell 9 and the outer side of the rear absorption body 3. The cooling liquid can be accelerated through the third cooling liquid flow channel 91 to accelerate the heat dissipation and cooling of the rear absorption body 3.
[0054] Specifically, the rear shell 9 is fixedly sleeved outside the rear absorption body, and the rear shell 9 and the rear absorption body 3 are both in a long tubular shape. The rear absorption body 3 is provided with a third spiral groove 31 outside, so that a third cooling liquid flow channel 91 is formed between the inner side of the rear shell 9 and the outer side of the rear absorption body 3. The third cooling liquid flow channel 91 is a plurality of spiral pipes, which can guarantee the flow rate of the cooling liquid in the third cooling liquid flow channel 91 and the contact area between the cooling liquid and the rear absorption body 3.
[0055] Please refer to Figure 2 , Figure 4 and Figure 5, specifically, the outer side of the reflector 4 is provided with a plurality of first flow guide grooves 43 spaced along the circumference, and the rear end of the rear section absorber 3 is provided with a plurality of second flow guide grooves 32 spaced along the circumference, the first flow guide grooves 43 and the second flow guide grooves 32 correspond and communicate, the second flow guide grooves 32 communicate with the third cooling liquid flow channel 91, and the cooling liquid in the cooling liquid cavity 42 can enter the third cooling liquid flow channel 91 through the first flow guide grooves 43 and the second flow guide grooves 32. A plurality of first drain pipes 93 are fixedly installed on the outer side of the rear section shell 9, the first drain pipes 93 pass through the pipe wall on the outer side of the rear section shell 9 and communicate with the third cooling liquid flow channel 91, and the cooling liquid flows along the third cooling liquid flow channel 91 and is discharged through the first drain pipes 93.
[0056] Please refer to Figure 1 、 Figure 2 and Figure 3 , the machine device also includes a middle section shell 8, the middle section shell 8 is arranged on the outer side of the corresponding middle section absorber 2, and the second cooling liquid flow channel 81 is formed between the inner side of the middle section shell 8 and the outer side of the middle section absorber 2, the machine device also includes a water supply pipe 5 and a water outlet pipe 6, the water supply pipe 5 and the water outlet pipe 6 communicate with the second cooling liquid flow channel 81, specifically, the water supply pipe 5 and the water outlet pipe 6 indirectly communicate with the second cooling liquid flow channel 81. When the cooling liquid flows through the second cooling liquid flow channel 81, the heat dissipation and cooling of the middle section absorber 2 are realized.
[0057] Specifically, the middle section shell 82 and the middle section absorber 22 are both in the shape of a long tube, and the middle section absorber 22 is provided with a second spiral groove 21 on the outer circumferential side, so that the second cooling liquid flow channel 81 is formed between the middle section shell 82 and the middle section absorber 22.
[0058] The middle section shell 82 is provided with a plurality of second drain pipes 86 at the front end and a plurality of second water inlet pipes 85 at the rear end, and the first drain pipe 93 and the adjacent second water inlet pipe 85 are connected by a communication pipe. Between a plurality of middle section shell 82, adjacent second drain pipe 86 and second water inlet pipe 85, so that the second cooling liquid flow channel 81 inside a plurality of middle section shell is communicated. The cooling liquid in the first drain pipe 93 can enter the second cooling liquid flow channel 81 through the second water inlet pipe 85, and one or more middle section absorber 22 is cooled.
[0059] The said torture device further comprises a front section shell 7, which is arranged outside the front section absorber 1, and a first cooling liquid flow channel 71 is formed between the inner side of the front section shell 7 and the outer side of the front section absorber 1. The said torture device further comprises a water supply pipe 5 and a water outlet pipe 6, which are both connected with the first cooling liquid flow channel 71, and specifically, the water supply pipe 5 and the water outlet pipe 6 are indirectly connected with the first cooling liquid flow channel 71. The cooling liquid can flow through the first cooling liquid flow channel 71, so as to achieve heat dissipation of the front section absorber 1.
[0060] Specifically, the front section shell 7 and the front section absorber 1 are both long tubular, and the front section shell 7 is fixedly sleeved outside the front section absorber 1, and a first spiral groove 11 is arranged on the outer circumferential side of the front section absorber 1, so as to form the first cooling liquid flow channel 71 between the front section shell 7 and the front section absorber 1.
[0061] A plurality of third water outlet pipes 77 are arranged at the front end of the front section shell 7, and a plurality of third water inlet pipes 76 are arranged at the rear end of the front section shell 7, and the third water inlet pipes 76 are connected with the adjacent second water outlet pipes 86, so as to guide the cooling liquid into the third cooling flow channel and flow out into the third water outlet pipes 77.
[0062] Please refer to Figure 1 、 Figure 2 and Figure 6 , the water outlet pipe 6 is connected with a flow valve 10, the flow valve 10 is fixedly installed on the rear section shell 9, the flow valve 10 is provided with a plurality of flow joints 101, and the flow joints 101 are one-to-one corresponding and connected with the third water outlet pipes 77. The cooling liquid in the third water outlet pipes 77 can flow into the flow joints 101, the cooling liquid in the flow joints 101 can flow into the flow valve 10, and the water in the flow valve 10 can be discharged into the water outlet pipe 6 and discharged through the water outlet pipe 6.
[0063] Through the modular installation mode, the difficulty of replacement is reduced, the difficulty of maintenance is reduced, and the damaged part is convenient to replace.
[0064] The side of the sealing plate close to the reflector is convex, the convex part of the sealing plate is located in the cooling liquid cavity, the sealing plate is provided with a water supply hole, and the opening of the water supply hole is located at the center of the convex surface of the sealing plate, so that the cooling liquid can flow from the center of the reflector to the circumferential side of the reflector, and the flow of the cooling liquid at the edge of the heat dissipation fin is guaranteed.
[0065] The above merely illustrates the exemplary embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation or direct / indirect application in other related technical fields under the technical concept of the present application and by using the content of the present application specification and drawings are included in the patent protection scope of the present application.
Claims
1. An interrogation device, characterized in that The laser engraving device comprises a plurality of absorbing bodies connected end to end along a first direction, wherein the plurality of absorbing bodies comprises: a front absorbing body having a first absorbing cavity for absorbing laser, and a front end of the front absorbing body having a laser entrance for laser to enter; a rear absorbing body having a second absorbing cavity for absorbing laser; and a reflector arranged at a rear end of the rear absorbing body, the reflector having a reflecting surface on a side close to the rear absorbing body.
2. The apparatus of claim 1, wherein, The plurality of absorbing bodies further comprises a middle absorbing body having a middle absorbing cavity, and the middle absorbing body is arranged between the front absorbing body and the rear absorbing body.
3. The apparatus of claim 2 wherein, The middle absorbing body comprises a plurality of middle absorbing sub-bodies connected end to end, and the plurality of middle absorbing sub-bodies comprises at least two middle absorbing sub-bodies at two ends of the middle absorbing body, and the two middle absorbing sub-bodies are connected to the front absorbing body and the rear absorbing body respectively.
4. The apparatus of claim 1 wherein, The reflector has a heat dissipation fin on a side away from the laser entrance; and / or The laser engraving device further comprises a water supply pipe and a water outlet pipe, and the reflector is formed with a cooling liquid cavity on the side away from the laser entrance, and the water supply pipe and the water outlet pipe are in communication with the cooling liquid cavity.
5. The apparatus of claim 1 wherein, The laser engraving device further comprises a front shell arranged outside the front absorbing body, and a first cooling liquid flow channel is formed between an inner side of the front shell and an outer side of the front absorbing body.
6. The apparatus of claim 5 wherein, The laser engraving device further comprises a water supply pipe and a water outlet pipe, and the water supply pipe and the water outlet pipe are in communication with the first cooling liquid flow channel.
7. The apparatus of claim 1 wherein, The laser engraving device further comprises a middle shell arranged outside the corresponding middle absorbing body, and a second cooling liquid flow channel is formed between an inner side of the middle shell and an outer side of the middle absorbing body.
8. The apparatus of claim 7 wherein, The laser engraving device further comprises a water supply pipe and a water outlet pipe, and the water supply pipe and the water outlet pipe are in communication with the second cooling liquid flow channel.
9. The apparatus of claim 1 wherein, The laser engraving device further comprises a rear shell arranged outside the rear absorbing body, and a third cooling liquid flow channel is formed between an inner side of the rear shell and an outer side of the rear absorbing body.
10. The apparatus of claim 9 wherein, The laser engraving device further comprises a water supply pipe and a water outlet pipe, and the water supply pipe and the water outlet pipe are in communication with the third cooling liquid flow channel.