A laser head mounting assembly and a laser engraving machine

CN224642610UActive Publication Date: 2026-08-18DONGGUAN ORTUR INTELLIGENT TECH CO LTD
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Patent Information

Application Number
CN202521651517.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-08-04
Publication Date
2026-08-18
Estimated Expiration
2035-08-04

AI Technical Summary

Technical Problem

在现有技术中,现有的激光头安装组件包括壳体、散热座和激光模块,散热座和激光模块容纳于壳体的内侧,散热座通过螺栓与激光模块相连接,散热座对激光模块进行散热,但是,长时间使用螺栓容易松动,散热座与激光模块无法紧密的贴合,在存在尺寸公差的话,需要多次调节螺栓,导致现有的激光头安装组件的安装便利性较差

Benefits of technology

[0027]This utility model provides a laser head mounting assembly and a laser engraving machine. The housing has a receiving cavity; a heat sink is directly or indirectly connected to the housing and is located within the receiving cavity; the heat sink is stationary relative to the housing; the laser module includes a laser generator and a laser output head; the laser output head is connected to the laser generator and receives the laser light generated by the laser generator to output laser light to the workpiece to be engraved; the laser generator is connected to the heat sink and suspended in the receiving cavity; the laser generator has a first mounting part, which is mounted on the heat sink and elastically abuts against the side wall of the heat sink facing the first mounting part, so as to maintain the elastic mounting state of the laser generator relative to the heat sink, maintain the fit between the first mounting part and the heat sink, ensure the installation stability of the laser generator relative to the heat sink, overcome assembly tolerances and dimensional tolerances, improve the installation convenience of the laser head mounting assembly, and at the same time, the laser module is compatible with the heat sink, so that the heat sink can dissipate heat from the laser module.

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Abstract

This application provides a laser head mounting assembly and a laser engraving machine. The laser head mounting assembly includes a housing, a heat sink, and a laser module. The housing has a receiving cavity. The heat sink is located within the receiving cavity and is stationary relative to the housing. The laser module includes a laser generator and a laser output head. The laser output head is connected to the laser generator and receives the laser light generated by the laser generator to output laser light to the workpiece to be engraved. The laser generator is connected to the heat sink and suspended in the receiving cavity. The laser generator has a first mounting part, which is mounted on the heat sink and elastically abuts against the side wall of the heat sink facing the first mounting part. This maintains the elastic mounting state of the laser generator relative to the heat sink, ensuring the fit between the first mounting part and the heat sink, guaranteeing the installation stability of the laser generator relative to the heat sink, overcoming assembly tolerances and dimensional tolerances, and improving the installation convenience of the laser head mounting assembly.
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Description

Technical Field

[0001] This utility model relates to the technical field of laser engraving machines, and in particular to a laser head mounting assembly and a laser engraving machine. Background Technology

[0002] With the development of technology, laser engraving machines use laser light to engrave parts, and the laser head mounting assembly is an integral part of the laser engraving machine. In existing technology, the laser head mounting assembly includes a housing, a heat sink, and a laser module. The heat sink and laser module are housed inside the housing, and the heat sink is connected to the laser module by bolts. The heat sink dissipates heat from the laser module. However, after prolonged use, the bolts are prone to loosening, and the heat sink and laser module cannot fit tightly together. If dimensional tolerances exist, multiple adjustments of the bolts are required, resulting in poor installation convenience for existing laser head mounting assemblies. Utility Model Content

[0003] The purpose of this utility model is to provide a laser head mounting assembly and a laser engraving machine. The housing has a receiving cavity; a heat sink is directly or indirectly connected to the housing and is located within the receiving cavity; the heat sink is stationary relative to the housing; the laser module includes a laser generator and a laser output head; the laser output head is connected to the laser generator and receives the laser light generated by the laser generator to output laser light to the workpiece to be engraved; the laser generator is connected to the heat sink and suspended in the receiving cavity; the laser generator has a first mounting part, which is mounted on the heat sink and elastically abuts against the side wall of the heat sink facing the first mounting part, so as to maintain the elastic mounting state of the laser generator relative to the heat sink, maintain the fit between the first mounting part and the heat sink, ensure the installation stability of the laser generator relative to the heat sink, overcome assembly tolerances and dimensional tolerances, improve the installation convenience of the laser head mounting assembly, and at the same time, the laser module is compatible with the heat sink, so that the heat sink can dissipate heat from the laser module.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a laser head mounting assembly, applied to a laser engraving machine, the laser head mounting assembly comprising:

[0005] The shell has a receiving cavity;

[0006] A heat sink is directly or indirectly connected to the housing and is located within the receiving cavity; the heat sink is stationary relative to the housing.

[0007] A laser module includes a laser generator and a laser output head; the laser output head is connected to the laser generator and receives the laser light generated by the laser generator to output laser light to the workpiece to be engraved; the laser generator is connected to the heat sink and suspended in the receiving cavity; the laser generator is provided with a first mounting part, which is mounted on the heat sink and elastically abuts against the side wall of the heat sink facing the first mounting part, so as to maintain the elastic mounting state of the laser generator relative to the heat sink.

[0008] Optionally, the heat sink is provided with a second mounting portion, which is arranged opposite to the first mounting portion;

[0009] The first mounting part is disposed on one side of the second mounting part and is elastically mounted on the second mounting part, so that the first mounting part and the opposite side walls of the second mounting part are in a flat and fitted state.

[0010] Optionally, the laser module further includes a connecting shaft and an elastic element; the connecting shaft movably passes through the second mounting portion and is connected to the first mounting portion;

[0011] The elastic element is sleeved on the connecting shaft and acts elastically on the end of the connecting shaft and the second mounting part to apply an elastic force to the first mounting part, so that the first mounting part is tightly attached to the second mounting part under the elastic force.

[0012] Optionally, the second mounting portion is provided with a movable hole, and the connecting shaft passes through the movable hole; the end of the connecting shaft is located on the side of the second mounting portion opposite to the first mounting portion and contacts one end of the elastic member, and the other end of the elastic member elastically contacts the side wall of the second mounting portion opposite to the first mounting portion.

[0013] Optionally, the elastic element is sleeved on the connecting shaft and located on the outer periphery of the connecting shaft;

[0014] The connecting shaft has a first shaft body and a second shaft body, which are arranged sequentially along the length direction of the connecting shaft, and the first shaft body is connected to the second shaft body;

[0015] The first shaft serves as an optical axis, and the first shaft passes through the movable hole; the portion of the first shaft that extends beyond the movable hole is fitted with an elastic element, which is located on the outer periphery of the portion of the first shaft that extends beyond the movable hole.

[0016] The second shaft is a threaded shaft, located on the side of the second mounting portion facing the first mounting portion, and screwed to the first mounting portion.

[0017] Optionally, the connecting shaft and the elastic element are in a one-to-one correspondence; the connecting shaft and the elastic element form a set of elastic connection structures.

[0018] The elastic connection structure has multiple sets, which are distributed at different positions of the first mounting part. The multiple sets of elastic connection structures are arranged in a square array, a ring array, or an arc array.

[0019] Optionally, the heat sink is provided with multiple heat dissipation arms, which are arranged adjacent to each other. A heat dissipation gap is formed between two adjacent heat dissipation arms. The heat dissipation gap is used for gas to pass through, and the gas will carry away the heat dissipated by the heat dissipation arms during the flow process.

[0020] Optionally, the heat sink is provided with a clearance hole for the elastic member and the connecting shaft to pass through, and the clearance hole is opened in at least one of the heat sink arms; the clearance hole exposes the connecting shaft;

[0021] The second mounting part is provided with a protective arm, which extends outward from the side wall of the second mounting part toward the first mounting part. The protective arm is located on the outside of the first mounting part to provide external protection for the first mounting part.

[0022] Optionally, the laser head mounting assembly further includes a cooling fan, which is disposed on the upper side of the heat sink, and the cooling fan and the heat sink are stacked together in the vertical direction;

[0023] The exhaust end of the cooling fan faces the plurality of cooling arms of the heat sink and exhausts gas into the cooling arms to cool them.

[0024] The cooling fan is connected to the top of the housing or the heat sink.

[0025] To achieve the above objectives, the present invention provides the following technical solution: a laser engraving machine, comprising the aforementioned laser head mounting assembly and a laser engraving machine body, wherein the laser engraving machine body supports the laser head mounting assembly.

[0026] Compared with the prior art, the beneficial effects of this utility model are:

[0027] This utility model provides a laser head mounting assembly and a laser engraving machine. The housing has a receiving cavity; a heat sink is directly or indirectly connected to the housing and is located within the receiving cavity; the heat sink is stationary relative to the housing; the laser module includes a laser generator and a laser output head; the laser output head is connected to the laser generator and receives the laser light generated by the laser generator to output laser light to the workpiece to be engraved; the laser generator is connected to the heat sink and suspended in the receiving cavity; the laser generator has a first mounting part, which is mounted on the heat sink and elastically abuts against the side wall of the heat sink facing the first mounting part, so as to maintain the elastic mounting state of the laser generator relative to the heat sink, maintain the fit between the first mounting part and the heat sink, ensure the installation stability of the laser generator relative to the heat sink, overcome assembly tolerances and dimensional tolerances, improve the installation convenience of the laser head mounting assembly, and at the same time, the laser module is compatible with the heat sink, so that the heat sink can dissipate heat from the laser module. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings. In the following description, the same reference numerals denote the same parts.

[0030] Figure 1 A schematic diagram of a laser head mounting assembly according to an embodiment of this application is shown.

[0031] Figure 2 A schematic diagram of the internal structure of a laser head mounting assembly according to an embodiment of this application is shown.

[0032] Figure 3 A schematic diagram showing the connection between the heat sink of the laser head mounting assembly and the laser module according to an embodiment of this application is shown.

[0033] Figure 4 A cross-sectional view showing the connection between the heat sink of the laser head mounting assembly and the laser module according to an embodiment of this application is shown.

[0034] Figure 5 A schematic diagram of a laser module of a laser head mounting assembly according to an embodiment of this application is shown.

[0035] Figure label:

[0036] 100. Laser head mounting assembly;

[0037] 10. Shell; 10a. Receiving cavity;

[0038] 20. Heat sink base; 20a. Clearance hole; 21. Second mounting part; 21a. Moving hole; 211. Protective support arm; 22. Heat sink support arm;

[0039] 30. Laser module; 31. Laser generator; 311. First mounting part; 32. Laser output head; 33. Connecting shaft; 331. First shaft body; 332. Second shaft body; 34. Elastic element;

[0040] 40. Cooling fan. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0042] Please refer to the attached document. Figures 1-5 This application provides a laser head mounting assembly 100, which is applied to a laser engraving machine and is used to dissipate heat from the laser module 30.

[0043] Please refer to the attached document. Figures 1-5 In this embodiment, the laser head mounting assembly 100 includes a housing 10, a heat sink 20, and a laser module 30. The housing 10 has a receiving cavity 10a. The heat sink 20 is directly or indirectly connected to the housing 10 and is located within the receiving cavity 10a. The heat sink 20 is stationary relative to the housing 10. The laser module 30 includes a laser generator 31 and a laser output head 32. The laser output head 32 is connected to the laser generator 31 and receives the laser light generated by the laser generator 31 to output laser light to the workpiece to be engraved. The laser generator 31 is connected to the heat sink 20 and suspended in the receiving cavity 10a. The laser generator 31 is provided with a first mounting part 311, which is mounted on the heat sink 20 and elastically abuts against the side wall of the heat sink 20 facing the first mounting part 311. This maintains the elastic mounting state of the laser generator 31 relative to the heat sink 20, keeps the first mounting part 311 in contact with the heat sink 20, ensures the installation stability of the laser generator 31 relative to the heat sink 20, overcomes assembly tolerances and dimensional tolerances, and improves the installation convenience of the laser head mounting assembly 100. At the same time, the laser module 30 is compatible with the heat sink 20, so that the heat sink 20 can dissipate heat from the laser module 30.

[0044] Please refer to the attached document. Figures 1-5 In this embodiment of the application, the housing 10 is provided with a receiving cavity 10a, which serves as the internal space of the housing 10.

[0045] The heat sink 20 is directly or indirectly connected to the housing 10 and is located within the receiving cavity 10a; the heat sink 20 is stationary relative to the housing 10; this ensures the positional accuracy of the heat sink 20 relative to the housing 10.

[0046] The laser module 30 includes a laser generator 31 and a laser output head 32. The laser output head 32 is connected to the laser generator 31 and receives the laser light generated by the laser generator 31 to output laser light to the workpiece to be engraved. The laser generator 31 is connected to the heat sink 20 and suspended in the receiving cavity 10a so that the heat sink 20 can support the laser generator 31. The laser generator 31 is provided with a first mounting part 311, which is mounted on the heat sink 20 and elastically abuts against the side wall of the heat sink 20 facing the first mounting part 311, so as to maintain the elastic mounting state of the laser generator 31 relative to the heat sink 20, maintain the fit between the first mounting part 311 and the heat sink 20, ensure the installation stability of the laser generator 31 relative to the heat sink 20, overcome assembly tolerance and dimensional tolerance, improve the installation convenience of the laser head mounting assembly 100, and at the same time, the laser module 30 is compatible with the heat sink 20 so that the heat sink 20 can dissipate heat from the laser module 30.

[0047] Please refer to the attached document. Figures 1-4 In this embodiment, the heat sink 20 is provided with a second mounting part 21, which is arranged opposite to the first mounting part 311. The first mounting part 311 is disposed on one side of the second mounting part 21 and is elastically mounted on the second mounting part 21, so that the first mounting part 311 and the opposite side walls of the second mounting part 21 are in a flat and close fit. The elastic deformation allows the second mounting part 21 to be finely adjusted when subjected to force, ensuring that the side wall of the first mounting part 311 and the side wall of the second mounting part 21 are always flat and close fit, ensuring the installation stability of the laser generator 31 relative to the heat sink 20, overcoming assembly tolerances and dimensional tolerances, and improving the installation convenience of the laser head mounting assembly 100.

[0048] Please refer to the attached document. Figures 1-5In this embodiment, the laser module 30 further includes a connecting shaft 33 and an elastic element 34. The connecting shaft 33 is movably inserted through the second mounting portion 21 and connected to the first mounting portion 311. The elastic element 34 is sleeved on the connecting shaft 33 and elastically acts on the end of the connecting shaft 33 and the second mounting portion 21 to apply an elastic force to the first mounting portion 311, so that the first mounting portion 311 is tightly attached to the second mounting portion 21 under the elastic force. This allows the first mounting portion 311 to be elastically connected to the second mounting portion 21 through the connecting shaft 33 and the elastic element 34, thereby ensuring the fit between the first mounting portion 311 and the second mounting portion 21 under the elastic action of the elastic element 34. This ensures the installation stability of the laser generator 31 relative to the heat sink 20, overcomes assembly tolerances and dimensional tolerances, and improves the installation convenience of the laser head mounting assembly 100.

[0049] Please refer to the attached document. Figures 1-5 In this embodiment, the second mounting part 21 is provided with a moving hole 21a, and the connecting shaft 33 passes through the moving hole 21a; the end of the connecting shaft 33 is located on the side of the second mounting part 21 facing away from the first mounting part 311 and contacts one end of the elastic member 34, and the other end of the elastic member 34 elastically contacts the side wall of the second mounting part 21 facing away from the first mounting part 311, so that the elastic force applied by the elastic member 34 can be transmitted from the second mounting part 21 toward the first mounting part 311, thereby facilitating the first mounting part 311 to maintain a close fit with the heat sink 20.

[0050] Please refer to the attached document. Figures 1-5 In this embodiment, the elastic element 34 is sleeved on the connecting shaft 33 and located on the outer periphery of the connecting shaft 33; the connecting shaft 33 has a first shaft body 331 and a second shaft body 332, which are arranged sequentially along the length of the connecting shaft 33, and the first shaft body 331 is connected to the second shaft body 332; the first shaft body 331 serves as an optical axis and passes through a moving hole 21a; the portion of the first shaft body 331 extending beyond the moving hole 21a is sleeved by the elastic element 34, which is located on the outer periphery of the portion of the first shaft body 331 extending beyond the moving hole 21a; the second shaft body 332 serves as a threaded shaft, the first... The second shaft 332 is located on the side of the second mounting part 21 facing the first mounting part 311 and is screwed to the first mounting part 311. At this time, the connecting shaft 33 is stationary relative to the first mounting part 311 through the second shaft 332. The second mounting part 21 is in a movable state relative to the connecting shaft 33 by cooperating with the first shaft 331 through the moving hole 21a, so that the second mounting part 21 can be finely adjusted relative to the first mounting part 311. The elastic element 34 overcomes the assembly tolerance and dimensional tolerance, maintains the fit between the first mounting part 311 and the heat sink 20, and ensures the installation stability of the laser generator 31 relative to the heat sink 20.

[0051] Please refer to the attached document. Figures 1-5 In this embodiment, the connecting shaft 33 and the elastic element 34 are in a one-to-one correspondence; the connecting shaft 33 and the elastic element 34 form a set of elastic connection structures; there are multiple sets of elastic connection structures, which are distributed at different positions of the first mounting part 311. The multiple sets of elastic connection structures are arranged in a square array, a ring array, or an arc array. By arranging multiple sets of elastic connection structures, the connection stability between the first mounting part 311 and the second mounting part 21 is increased, and the failure of one set of elastic connection structures is avoided, which would cause the first mounting part 311 and the second mounting part 21 to lose their connection.

[0052] Please refer to the attached document. Figures 1-3 In this embodiment, the heat sink 20 is provided with a plurality of heat sink arms 22, which are arranged adjacent to each other. A heat sink gap is formed between two adjacent heat sink arms 22. The heat sink gap is used for gas to pass through. During the flow of the gas, the gas will carry away the heat dissipated by the heat sink arms 22, thus ensuring the heat dissipation effect of the heat sink 20, so that the heat sink 20 can dissipate heat from the laser generator 31.

[0053] Please refer to the attached document. Figures 1-3 In this embodiment, the heat sink 20 is provided with a clearance hole 20a, which is used for the elastic member 34 and the connecting shaft 33 to pass through. The clearance hole 20a is opened in at least one heat sink support arm 22. The clearance hole 20a exposes the connecting shaft 33, ensuring the installation space of the connecting shaft 33 relative to the first mounting part 311 and the second mounting part 21, and improving the installation convenience of the connecting shaft 33 relative to the first mounting part 311 and the second mounting part 21.

[0054] The second mounting portion 21 is provided with a protective arm 211. The protective arm 211 protrudes outward from the side wall of the second mounting portion 21 toward the first mounting portion 311. The protective arm 211 is located on the outside of the first mounting portion 311 to protect the first mounting portion 311 from physical impact. At the same time, the protective arm 211 restricts the range of motion of the first mounting portion 311 to prevent the first mounting portion 311 from being detached from the second mounting portion 21 due to excessive force.

[0055] Please refer to the attached document. Figures 1-2In this embodiment, the laser head mounting assembly 100 further includes a cooling fan 40, which is disposed on the upper side of the heat sink 20. The cooling fan 40 and the heat sink 20 are stacked in the vertical direction. The exhaust end of the cooling fan 40 faces the multiple heat sink arms 22 of the heat sink 20 and exhausts gas into the heat sink arms 22 to dissipate heat. The cooling fan 40 is connected to the top of the housing 10 or the heat sink 20 so that the gas drawn by the cooling fan 40 passes through the heat sink arms 22 from top to bottom, thereby facilitating the dissipation of heat from the heat sink arms 22 and improving the heat dissipation effect of the heat sink 20.

[0056] In the second embodiment, a laser engraving machine includes a laser head mounting assembly 100 and a laser engraving machine body. The laser engraving machine body supports the laser head mounting assembly 100 so that the laser head mounting assembly 100 is fixed to the laser engraving machine body, thereby ensuring the stability of the laser output by the laser head mounting assembly 100.

[0057] Compared with the prior art, the beneficial effects of this utility model are:

[0058] This utility model provides a laser head mounting assembly 100 and a laser engraving machine. The housing 10 has a receiving cavity 10a; a heat sink 20 is directly or indirectly connected to the housing 10 and is located within the receiving cavity 10a; the heat sink 20 is stationary relative to the housing 10; the laser module 30 includes a laser generator 31 and a laser output head 32; the laser output head 32 is connected to the laser generator 31 and receives the laser light generated by the laser generator 31 to output laser light to the workpiece to be engraved; the laser generator 31 is connected to the heat sink 20 and suspended in the receiving cavity 10a; the laser generator 31 has... The first mounting part 311 is mounted on the heat sink 20 and elastically abuts against the side wall of the heat sink 20 facing the first mounting part 311, so as to maintain the elastic mounting state of the laser generator 31 relative to the heat sink 20, maintain the fit between the first mounting part 311 and the heat sink 20, ensure the installation stability of the laser generator 31 relative to the heat sink 20, overcome assembly tolerance and dimensional tolerance, improve the installation convenience of the laser head mounting assembly 100, and at the same time, the laser module 30 is compatible with the heat sink 20 so that the heat sink 20 can dissipate heat from the laser module 30.

[0059] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0060] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0061] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A laser head mounting assembly, characterized by, The laser head mounting assembly, used in laser engraving machines, includes: The shell has a receiving cavity; A heat sink is directly or indirectly connected to the housing and is located within the receiving cavity; the heat sink is stationary relative to the housing. A laser module includes a laser generator and a laser output head; the laser output head is connected to the laser generator and receives the laser light generated by the laser generator to output laser light to the workpiece to be engraved; the laser generator is connected to the heat sink and suspended in the receiving cavity; the laser generator is provided with a first mounting part, which is mounted on the heat sink and elastically abuts against the side wall of the heat sink facing the first mounting part, so as to maintain the elastic mounting state of the laser generator relative to the heat sink.

2. The laser head mounting assembly according to claim 1, characterized in that, The heat sink is provided with a second mounting part, which is arranged opposite to the first mounting part. The first mounting part is disposed on one side of the second mounting part and is elastically mounted on the second mounting part, so that the first mounting part and the opposite side walls of the second mounting part are in a flat and fitted state.

3. The laser head mounting assembly according to claim 2, characterized in that, The laser module further includes a connecting shaft and an elastic element; the connecting shaft movably passes through the second mounting portion and is connected to the first mounting portion; The elastic element is sleeved on the connecting shaft and acts elastically on the end of the connecting shaft and the second mounting part to apply an elastic force to the first mounting part, so that the first mounting part is tightly attached to the second mounting part under the elastic force.

4. The laser head mounting assembly according to claim 3, characterized in that, The second mounting part is provided with a movable hole, and the connecting shaft passes through the movable hole; the end of the connecting shaft is located on the side of the second mounting part away from the first mounting part and contacts one end of the elastic member, and the other end of the elastic member elastically contacts the side wall of the second mounting part away from the first mounting part.

5. The laser head mounting assembly according to claim 4, characterized in that, The elastic element is sleeved on the connecting shaft and is located on the outer periphery of the connecting shaft; The connecting shaft has a first shaft body and a second shaft body, which are arranged sequentially along the length direction of the connecting shaft, and the first shaft body is connected to the second shaft body; The first shaft serves as an optical axis, and the first shaft passes through the movable hole; the portion of the first shaft that extends beyond the movable hole is fitted with an elastic element, which is located on the outer periphery of the portion of the first shaft that extends beyond the movable hole. The second shaft is a threaded shaft, located on the side of the second mounting portion facing the first mounting portion, and screwed to the first mounting portion.

6. The laser head mounting assembly according to claim 3, characterized in that, The connecting shaft and the elastic element are in a one-to-one correspondence; the connecting shaft and the elastic element form a set of elastic connection structures. The elastic connection structure has multiple sets, which are distributed at different positions of the first mounting part. The multiple sets of elastic connection structures are arranged in a square array, a ring array, or an arc array.

7. The laser head mounting assembly according to claim 5, characterized in that, The heat sink is provided with multiple heat dissipation arms, which are arranged adjacent to each other. A heat dissipation gap is formed between two adjacent heat dissipation arms. The heat dissipation gap is used for gas to pass through, and the gas will carry away the heat dissipated by the heat dissipation arms during the flow.

8. The laser head mounting assembly according to claim 7, characterized in that, The heat sink is provided with a clearance hole for the elastic member and the connecting shaft to pass through. The clearance hole is opened in at least one of the heat sink arms. The clearance hole exposes the connecting shaft. The second mounting part is provided with a protective arm, which extends outward from the side wall of the second mounting part toward the first mounting part. The protective arm is located on the outside of the first mounting part to provide external protection for the first mounting part.

9. The laser head mounting assembly according to claim 7, characterized in that, The laser head mounting assembly also includes a cooling fan, which is disposed on the upper side of the heat sink base, and the cooling fan and the heat sink base are stacked together in the vertical direction; The exhaust end of the cooling fan faces the plurality of cooling arms of the heat sink and exhausts gas into the cooling arms to cool them. The cooling fan is connected to the top of the housing or the heat sink.

10. A laser engraving machine, characterized in that, It includes a laser head mounting assembly as described in any one of claims 1 to 9 and a laser engraving machine body, wherein the laser engraving machine body supports the laser head mounting assembly.