A laser head device and a laser engraving machine

Abstract

The application provides a laser head device and a laser engraving machine. The laser head device comprises a shell, a laser module, a circuit board, a first heat dissipation fan and a focusing element assembly. The first heat dissipation air duct is formed between the circuit board and the laser module, the first heat dissipation air duct is communicated with the first containing space, and the first heat dissipation air duct is provided for the first gas flowing through the first containing space. The first heat dissipation fan is installed on the top of the shell. The first heat dissipation fan outputs the first gas drawn in through the suction end of the first heat dissipation fan to the first containing space and the first heat dissipation air duct. At this time, the first gas carries away the heat generated by the laser module and the heat generated by the circuit board when passing through the first heat dissipation air duct. The focusing element assembly comprises a focusing element. The focusing element is movably connected to the shell and is telescopic relative to the bottom of the shell. The focusing element can be focused in the extended state. The focusing, circuit board heat dissipation and laser module heat dissipation effects are compatible, and the heat dissipation effect of the laser head device is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of laser engraving machines, and more particularly to a laser head device and a laser engraving machine. Background Technology

[0002] With the development of technology, laser engraving machines are applied in industry. These machines can be placed on a table or desktop for user operation. A laser engraving machine includes a laser head assembly and a main body, with the main body supporting the laser head assembly. The laser head assembly is an integral part of the laser engraving machine. In existing technology, the current laser head assembly includes a housing, a laser module, and a focusing component. The laser module is connected to the housing, and the focusing component is retractably connected to the housing, enabling focusing when extended. However, this only provides focusing, resulting in poor heat dissipation in existing laser head assemblies. Utility Model Content

[0003] The purpose of this utility model is to provide a laser head device and a laser engraving machine. The housing has a receiving cavity; a first receiving space is formed within the receiving cavity; a laser module is used to output laser light to the workpiece to be engraved; the laser module is received in the receiving cavity and is directly or indirectly connected to the housing; a circuit board is received in the receiving cavity and disposed on one side of the laser module; the circuit board is arranged along the length or width of the receiving cavity; a first heat dissipation duct is formed between the circuit board and the laser module, the first heat dissipation duct connecting to the first receiving space and allowing first gas flowing through the first receiving space to pass through; a first cooling fan is installed on the top of the housing for first heat dissipation. The exhaust end of the fan faces the outside of the housing, and the exhaust end of the first cooling fan faces the receiving cavity. The first gas drawn in through the exhaust end of the first cooling fan is output to the first receiving space and the first cooling duct. At this time, the first gas carries away the heat generated by the laser module and the heat generated by the circuit board while passing through the first cooling duct. The focusing component assembly includes a focusing component. The focusing component is movably connected to the housing and extends and retracts relative to the bottom of the housing. The focusing component can focus when it is extended, which combines the effects of focusing, circuit board heat dissipation and laser module heat dissipation, avoiding the limitation of only having a focusing effect and improving the heat dissipation effect of the laser head device.

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

[0005] The shell has a receiving cavity; a first receiving space is formed in the receiving cavity;

[0006] A laser module is used to output laser beams to the workpiece to be engraved; the laser module is housed in the receiving cavity and is directly or indirectly connected to the housing;

[0007] A circuit board is housed in the receiving cavity and disposed on one side of the laser module; the circuit board is arranged along the length or width of the receiving cavity; a first heat dissipation channel is formed between the circuit board and the laser module, the first heat dissipation channel is connected to the first receiving space and allows the first gas flowing through the first receiving space to pass through;

[0008] A first cooling fan is installed on the housing. The exhaust end of the first cooling fan faces the outside of the housing, and the exhaust end of the first cooling fan faces the receiving cavity. The first gas drawn in through the exhaust end of the first cooling fan is output to the first receiving space and the first cooling duct. At this time, the first gas carries away the heat generated by the laser module and the heat generated by the circuit board when passing through the first cooling duct.

[0009] A focusing component assembly includes a focusing component; the focusing component is movably connected to the housing and extends and retracts relative to the bottom of the housing; the focusing component is capable of focusing in the extended state.

[0010] Optionally, the circuit board is located within the receiving cavity and is protected by the housing;

[0011] The circuit board carries multiple electronic components, which are located on the side of the circuit board facing the first heat dissipation duct and are arranged at intervals from the laser module.

[0012] Optionally, the circuit board is positioned opposite an inner wall of the receiving cavity; there is a gap between the surface of the circuit board and an inner wall of the receiving cavity; the circuit board is suspended within the receiving cavity and is stationary relative to the housing.

[0013] Optionally, when the housing is arranged in the vertical direction, the circuit board and the laser module are located in the same receiving cavity, with the circuit board directly opposite the laser generating part of the laser module;

[0014] The first cooling fan is located above the laser module and on the side of the circuit board facing the laser module; the first cooling fan and the laser module are stacked vertically.

[0015] Optionally, the laser head device further includes a top plate, which is disposed on the top of the housing and is integrally connected to or separately connected to the housing; the top plate supports the first cooling fan, which is located on the side of the top plate facing the receiving cavity;

[0016] The top plate is provided with first heat dissipation holes, and each of the first heat dissipation holes is connected to the external environment and the receiving cavity;

[0017] The exhaust end of the first cooling fan faces the first heat dissipation hole and is connected to the external environment through the first heat dissipation hole.

[0018] Optionally, the laser head device further includes a base plate, which is disposed at the bottom of the housing and is integrally connected to or separately connected to the housing; the base plate is provided with a first through hole for the laser output head of the laser module to pass through;

[0019] The first through hole is disposed on the lower side of the receiving cavity, the first through hole connects to the receiving cavity, and connects to the first receiving space, the first heat dissipation air duct and the first heat dissipation hole through the receiving cavity;

[0020] The first heat dissipation hole and the first through hole are located on the upper and lower sides of the receiving cavity, respectively.

[0021] Optionally, the receiving cavity further includes a second receiving space, which is disposed on one side of the first receiving space; the first receiving space and the second receiving space are connected.

[0022] The laser head device further includes a heat sink, which is mounted on the housing and located in the second receiving space; the heat sink is provided with a second heat dissipation duct; the second heat dissipation duct is disposed on one side of the first heat dissipation duct and is compatible with the same receiving cavity;

[0023] The heat sink is connected to the laser module, and the heat sink contacts the laser module to dissipate heat from the laser module.

[0024] Optionally, both the first and second heat dissipation ducts extend along the length of the housing; the second heat dissipation duct is arranged at an interval from the first heat dissipation duct.

[0025] The first heat dissipation duct is used to allow the first gas to pass through, which passes through the laser module and carries away some of the heat output by the laser module;

[0026] The laser module is in contact with the heat sink, and the heat sink exchanges heat with the laser module and performs contact-type heat dissipation on the laser module; the second heat dissipation duct is used for the passage of the second gas, which passes through the heat sink and performs air cooling on the heat sink, so that the laser module performs multi-path heat dissipation within the receiving cavity.

[0027] Optionally, the laser head device includes a second cooling fan, the second cooling fan and the laser module are respectively located in different directions of the heat sink; the exhaust end of the second cooling fan faces the second cooling duct and outputs a second gas into the second cooling duct;

[0028] The second cooling fan is installed on the other side wall of the heat sink, and the heat sink supports the second cooling fan and the laser module; the second cooling fan is located on the upper side of the heat sink, and the laser module is located on the periphery of the heat sink;

[0029] Alternatively, the second cooling fan is mounted on the housing, and the heat sink supports the second cooling fan and the laser module; the second cooling fan is located on the upper side of the heat sink, and the laser module is located on the periphery of the heat sink.

[0030] Optionally, the laser module is provided with a first mounting part, which is mounted on one side wall of the heat sink; the first mounting part is detachably connected to the heat sink and can elastically fit against the heat sink; the first mounting part is tightly attached to one side wall of the heat sink under elastic force.

[0031] The first mounting part and the heat sink are provided with multiple connection positions; 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 opposite side walls of the first mounting part and the second mounting part are in a flat and fitted state.

[0032] Optionally, the laser module further includes a connecting shaft and a first elastic element; the connecting shaft movably passes through the second mounting portion and is connected to the first mounting portion;

[0033] The first 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.

[0034] Optionally, the second mounting portion is provided with a first movable hole, and the connecting shaft passes through the first 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 first elastic member, and the other end of the first elastic member elastically contacts the side wall of the second mounting portion opposite to the first mounting portion.

[0035] The connecting shaft and the first elastic element are in a one-to-one correspondence; the connecting shaft and the first elastic element form a set of elastic connection structures.

[0036] 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 a strip array.

[0037] Optionally, the first elastic element is sleeved on the connecting shaft and located on the outer periphery of the connecting shaft;

[0038] 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;

[0039] The first shaft serves as an optical axis, and the first shaft passes through the first movable hole; the portion of the first shaft that extends beyond the first movable hole is fitted with a first elastic member, which is located on the outer periphery of the portion of the first shaft that extends beyond the first movable hole.

[0040] 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.

[0041] Optionally, the focusing component assembly further includes a pressing member; the focusing member is capable of focusing in the extended state; the pressing member is pressably connected to the housing and extends or retracts relative to the housing;

[0042] When the pressing member extends relative to the housing, the peripheral sidewall of the pressing member contacts the upper sidewall of the focusing member and restricts the upward movement of the focusing member to maintain the focusing state of the focusing member;

[0043] When the pressing member retracts relative to the housing, the focusing member can pass through the pressing member and retract into the housing.

[0044] Optionally, the focusing element is disposed at the corner of the housing;

[0045] The housing is provided with a support portion, which is located in the inner space of the housing and extends along the length of the housing;

[0046] The focusing element is movably connected to the support portion and moves along the length of the support portion to extend to the underside of the support portion or retract into the support portion;

[0047] The supporting portion of the pressing member passes through during the pressing process;

[0048] The pressing direction of the pressing element is arranged perpendicularly to or at an angle to the moving direction of the focusing element.

[0049] Optionally, the support portion is provided with a second movable hole, which extends along the length of the support portion and communicates downward with the external environment;

[0050] The housing is provided with a first clearance hole, which extends along the length of the housing and connects the second moving hole and the external environment in a horizontal direction;

[0051] The focusing component is provided with a focusing rod and a first operating component. The focusing rod is movably passed through the second moving hole. The first operating component is connected to the focusing rod. The first operating component passes through the first clearance hole in the horizontal direction and is exposed to the external environment. The first operating component is used for user operation.

[0052] When the first operating component is subjected to a downward pressure from the user, the focusing rod moves downward as the first operating component is pressed down, and the focusing end of the focusing rod is gradually exposed to the external environment and can focus.

[0053] Optionally, the focusing component assembly further includes a second elastic element located within the support portion and applying an elastic force to the focusing component; the focusing component elastically retracts relative to the housing under the elastic force of the second elastic element.

[0054] The second elastic element is sleeved on the focusing rod and housed in the second moving hole; the second elastic element is spirally distributed along the axis of the focusing rod, and the two ends of the second elastic element contact the first operating element and the support part respectively;

[0055] When the focusing rod extends out of the lower side wall of the housing, the second elastic element is subjected to the resistance force of the first operating element and is in a compressed state.

[0056] Optionally, the pressing element includes a pressing part and a moving part; the pressing part is connected to the moving part and exposed to the housing, and the pressing part is used for pressing by the user;

[0057] The movable part is movably connected to the support part and moves in the horizontal direction, while the focusing rod moves in the vertical direction relative to the support part; the movable part is provided with a first through hole;

[0058] When the pressing part is in the pressing state, the first through hole is arranged opposite to the focusing rod, and the focusing rod is allowed to pass through the first through hole, so that the focusing rod can move upward and be adjusted from the extended state to the retracted state;

[0059] When the pressing part is in a non-pressed state, the first through hole is misaligned with the focusing rod, the moving part is located above the focusing rod, and restricts the upward movement of the focusing rod to maintain the extended state of the focusing rod.

[0060] Optionally, the support portion is provided with a third movable hole, which is arranged horizontally and cross-shaped with the second movable hole; the third movable hole is an elongated hole with its axis arranged horizontally.

[0061] The movable part is movably provided through the third movable hole, the movable part moves within the third movable hole, and adjusts the relative position of the first through hole and the focusing rod;

[0062] The housing has a positioning hole on one side wall corresponding to the first operating member. The positioning hole is arranged along a long strip and extends in the horizontal direction.

[0063] The moving part is connected to a positioning pin, which is movably inserted through the positioning hole and is positioned by the positioning hole in the vertical direction. The positioning pin moves horizontally as the moving part moves horizontally.

[0064] Optionally, the laser head device further includes a smoke hood, which is disposed on the outside of the housing and installed on the housing; the smoke hood is arranged around the periphery of the laser output head of the laser module and provides peripheral protection for the laser output head of the laser module; the smoke hood has a smoke exhaust section, the smoke exhaust section has a smoke exhaust channel, the inner diameter of the smoke exhaust channel gradually decreases along the vertical direction, and the smoke exhaust channel converges towards the laser output head of the laser module;

[0065] The smoke exhaust channel is connected to the receiving cavity; the laser module generates heat when in operation, and this heat can be discharged outward along the receiving cavity and the smoke exhaust channel;

[0066] The smoke hood includes an outer hood body and a smoke exhaust arm; the smoke exhaust arm is part of the smoke exhaust section; the outer hood body is detachably connected to the housing; the outer hood body includes an outer hood arm, the outer hood arm is disposed on the outer periphery of the smoke exhaust arm, and the smoke exhaust arm is provided with the smoke exhaust channel;

[0067] The outer cover body is provided with a second through hole, which is located between the outer cover support arm and the smoke exhaust support arm; the focusing rod passes through the second through hole and can extend beyond the smoke exhaust hood.

[0068] Optionally, the rear sidewall of the housing is provided with a guide rail.

[0069] The laser head device further includes a clamping assembly disposed on the rear side of the housing; the clamping assembly includes a mounting base, a clamping seat, and a second operating member; the mounting base is used to mount on the main body of the laser engraving machine; the clamping seat is movably connected to the mounting base and moves relative to the mounting base; the second operating member swings relative to the mounting base under manual action and drives the clamping seat closer to the mounting base to quickly clamp the guide rail portion.

[0070] Optionally, the mounting base is connected to a guide shaft, the guide shaft passes through the clamping seat, and the clamping seat moves along the axis of the guide shaft;

[0071] The second operating member is pivotally connected to the guide shaft and is located outside the clamping seat; the second operating member is provided with a cam portion, which directly or indirectly contacts the outer wall of the clamping seat, and the cam portion drives the clamping seat to move as the second operating member pivots, so that the clamping seat clamps or releases the guide rail portion;

[0072] A first position and a second position are provided between the cam portion and the outer wall of the clamping seat; when the cam portion is in the first position, the end of the second operating member approaches the outer wall of the clamping seat, and the clamping seat clamps the guide rail portion; when the cam portion is in the second position, the end of the second operating member moves away from the outer wall of the clamping seat, and the clamping seat releases the guide rail portion.

[0073] Optionally, the distance between the portion of the cam portion relative to the first position and the swing axis of the cam portion is A;

[0074] The distance between the portion of the cam relative to the second position and the swing axis of the cam is B, where B is greater than A.

[0075] The portion of the cam relative to the first position and the portion of the cam relative to the second position form an arc transition.

[0076] Optionally, the mounting base is provided with a second through hole, and the clamping base is provided with a third through hole, the third through hole communicating with the second through hole;

[0077] The guide shaft passes through the second through hole and the third through hole;

[0078] One end of the guide shaft is provided with a limiting part, which contacts the mounting base and is limited by the mounting base; the other end of the guide shaft is hinged to the cam part of the second operating member.

[0079] To achieve the above objectives, this utility model provides the following technical solution: a laser engraving machine, comprising the aforementioned laser head device and a laser engraving machine body, wherein the laser engraving machine body supports the laser head device.

[0080] Compared with the prior art, the beneficial effects of this utility model are:

[0081] This utility model provides a laser head device and a laser engraving machine. The housing has a receiving cavity; a first receiving space is formed within the receiving cavity; a laser module is used to output laser light to the workpiece to be engraved; the laser module is housed in the receiving cavity and is directly or indirectly connected to the housing; a circuit board is housed in the receiving cavity and disposed on one side of the laser module; the circuit board is arranged along the length or width of the receiving cavity; a first heat dissipation duct is formed between the circuit board and the laser module, the first heat dissipation duct connecting to the first receiving space and allowing first gas flowing through the first receiving space to pass through; a first cooling fan is installed on the top of the housing. The exhaust end of the first cooling fan faces the outside of the housing, and the exhaust end of the first cooling fan faces the receiving cavity. The first gas drawn in through the exhaust end of the first cooling fan is output to the first receiving space and the first cooling duct. At this time, the first gas carries away the heat generated by the laser module and the heat generated by the circuit board when passing through the first cooling duct. The focusing component assembly includes a focusing component. The focusing component is movably connected to the housing and extends and retracts relative to the bottom of the housing. The focusing component can focus when it is extended, which combines the effects of focusing, circuit board heat dissipation and laser module heat dissipation, avoiding the limitation of only having a focusing effect and improving the heat dissipation effect of the laser head device. Attached Figure Description

[0082] 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.

[0083] 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.

[0084] Figure 1 A schematic diagram of a laser head device according to an embodiment of this application is shown.

[0085] Figure 2 Another schematic diagram of a laser head device according to an embodiment of this application is shown.

[0086] Figure 3 A schematic diagram of the internal structure of a laser head device according to an embodiment of this application is shown.

[0087] Figure 4 A first-state cross-sectional view of a laser head device according to an embodiment of this application is shown.

[0088] Figure 5 A second-state cross-sectional view of a laser head device according to an embodiment of this application is shown.

[0089] Figure 6 A third-state cross-sectional view of a laser head device according to an embodiment of this application is shown.

[0090] Figure 7 A schematic diagram of the housing of a laser head device according to an embodiment of this application is shown.

[0091] Figure 8 A schematic diagram showing the connection between the laser module and the heat sink of a laser head device according to an embodiment of this application is illustrated.

[0092] Figure 9 A cross-sectional view showing the connection between the laser module and the heat sink of a laser head device according to an embodiment of this application is shown.

[0093] Figure 10 A schematic diagram of the focusing component assembly of a laser head device according to an embodiment of this application is shown.

[0094] Figure 11 A schematic diagram of the fume hood of a laser head device according to an embodiment of this application is shown.

[0095] Figure 12 A schematic diagram of a clamping assembly of a laser head device according to an embodiment of this application is shown.

[0096] Figure Labels

[0097] 100. Laser head device;

[0098] 10. Housing; 10a. Receiving cavity; 10b. First receiving space; 10c. Second receiving space; 10d. First clearance hole; 10e. Positioning hole; 11. Support part; 11a. Second moving hole; 11b. Third moving hole; 12. Guide rail part;

[0099] 20. Laser module; 20a. First heat dissipation duct; 21. First mounting part; 22. Connecting shaft; 221. First shaft body; 222. Second shaft body; 23. First elastic element;

[0100] 30. Circuit board; 31. Electronic component;

[0101] 40. First cooling fan;

[0102] 50. Focusing component assembly; 51. Focusing component; 511. Focusing rod; 512. First operating component; 52. Pressing component; 521. Pressing part; 522. Moving part; 522a. First through hole; 5221. Positioning pin; 53. Second elastic component;

[0103] 60. Top plate; 60a. First heat dissipation hole;

[0104] 70. Base plate; 70a. Through hole;

[0105] 80. Heat sink; 80a. Second heat dissipation duct; 81. Second mounting part; 81a. First moving hole;

[0106] 90. Second cooling fan; 91. Smoke hood; 911. Smoke exhaust section; 911a. Smoke exhaust channel; 912. Outer cover body; 912a. Second through hole; 9121. Outer cover support arm; 913. Smoke exhaust support arm; 92. Clamping assembly; 921. Mounting base; 921a. Second through hole; 9211. Guide shaft; 92111. Limiting part; 922. Clamping seat; 922a. Third through hole; 923. Second operating component; 9231. Cam part. Detailed Implementation

[0107] 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.

[0108] Please refer to the attached document. Figures 1-12 This application provides a laser head device 100, which is applied to a laser engraving machine and is used for focusing, heat dissipation of the circuit board 30, and heat dissipation of the laser module 20.

[0109] Please refer to the attached document. Figures 1-12In this embodiment, the laser head device 100 includes a housing 10, a laser module 20, a circuit board 30, a first cooling fan 40, and a focusing component assembly 50. The housing 10 has a receiving cavity 10a; a first receiving space 10b is formed in the receiving cavity 10a; the laser module 20 is used to output laser light to the workpiece to be engraved; the laser module 20 is received in the receiving cavity 10a and is directly or indirectly connected to the housing 10; the circuit board 30 is received in the receiving cavity 10a and is disposed on one side of the laser module 20; the circuit board 30 is arranged along the length or width direction of the receiving cavity 10a; a first heat dissipation channel 20a is formed between the circuit board 30 and the laser module 20, the first heat dissipation channel 20a is connected to the first receiving space 10b, and allows the first gas flowing through the first receiving space 10b to pass through; the first heat dissipation... A fan 40 is installed on the top of the housing 10. The exhaust end of the first cooling fan 40 faces the outside of the housing 10, and the exhaust end of the first cooling fan 40 faces the receiving cavity 10a. The first gas drawn in through the exhaust end of the first cooling fan 40 is output to the first receiving space 10b and the first heat dissipation duct 20a. At this time, the first gas carries away the heat generated by the laser module 20 and the heat generated by the circuit board 30 when passing through the first heat dissipation duct 20a. The focusing component assembly 50 includes a focusing component 51. The focusing component 51 is movably connected to the housing 10 and extends and retracts relative to the bottom of the housing 10. The focusing component 51 can focus when it is extended, which combines the effects of focusing, heat dissipation of the circuit board 30 and heat dissipation of the laser module 20, avoiding the limitation of only having a focusing effect and improving the heat dissipation effect of the laser head device 100.

[0110] Please refer to the attached document. Figures 1-12 In this embodiment of the application, the housing 10 is provided with a receiving cavity 10a; the receiving cavity 10a serves as the internal space of the housing 10; a first receiving space 10b is formed in the receiving cavity 10a.

[0111] The laser module 20 is used to output laser light to the workpiece to be engraved; the laser module 20 is housed in the receiving cavity 10a and is directly or indirectly connected to the housing 10; so that the laser module 20 can be fixed to the inside of the housing 10.

[0112] The circuit board 30 is housed in the receiving cavity 10a and disposed on one side of the laser module 20. The circuit board 30 is arranged along the length or width of the receiving cavity 10a. A first heat dissipation channel 20a is formed between the circuit board 30 and the laser module 20. The first heat dissipation channel 20a is connected to the first receiving space 10b and allows the first gas flowing through the first receiving space 10b to pass through.

[0113] The first cooling fan 40 is installed on the top of the housing 10. The exhaust end of the first cooling fan 40 faces the outside of the housing 10, and the exhaust end of the first cooling fan 40 faces the receiving cavity 10a. The first gas drawn in through the exhaust end of the first cooling fan 40 is output to the first receiving space 10b and the first cooling duct 20a. At this time, when the first gas passes through the first cooling duct 20a, it carries away the heat generated by the laser module 20 and the heat generated by the circuit board 30, so that the first cooling fan 40 can dissipate heat from the laser module 20 and the circuit board 30 at the same time.

[0114] The focusing component assembly 50 includes a focusing component 51. The focusing component 51 is arranged vertically and is movably connected to the housing 10. It extends and retracts relative to the bottom of the housing 10 to adjust the height position of the focusing component 51 relative to the housing 10. The focusing component 51 can focus when it is extended, which combines focusing, heat dissipation of the circuit board 30 and heat dissipation of the laser module 20. This avoids having only a focusing effect and improves the heat dissipation effect of the laser head device 100.

[0115] Please refer to the attached document. Figures 1-5 In this embodiment, the circuit board 30 is located within the receiving cavity 10a and protected by the housing 10, so that the circuit board 30 can make full use of the space of the receiving cavity 10a and prevent external components from directly impacting the circuit board 30. The circuit board 30 carries multiple electronic components 31, which are located on the side of the circuit board 30 facing the first heat dissipation duct 20a and are spaced apart from the laser module 20. The surface of the circuit board 30 facing the laser module 20 is the front surface, and the surface of the circuit board 30 facing away from the laser module 20 is the back surface. The number of electronic components 31 connected to the front surface is greater than the number of electronic components 31 connected to the back surface. At this time, the laser module 20 generates a lot of heat. Concentrating the electronic components 31 on the side close to the first heat dissipation duct 20a helps to directly guide the heat to the first heat dissipation duct 20a and reduce thermal resistance. The back surface has fewer components, which reduces thermal interference to the laser module 20 and avoids heat backflow or accumulation.

[0116] Please refer to the attached document. Figures 1-5 In this embodiment, the circuit board 30 is positioned directly opposite an inner wall of the receiving cavity 10a; a gap exists between the surface of the circuit board 30 and the inner wall of the receiving cavity 10a; the circuit board 30 is suspended within the receiving cavity 10a and is stationary relative to the housing 10, so that the gap forms a continuous flow channel, and the first gas discharged by the first cooling fan 40 passes through the gap and carries away the heat from the circuit board 30. If the circuit board 30 is completely attached to the inner wall of the receiving cavity 10a, the heat output by the circuit board 30 will be trapped by the inner wall; the suspension allows for double-sided convection, improving heat dissipation efficiency.

[0117] Please refer to the attached document. Figures 1-5In this embodiment, when the housing 10 is arranged in the vertical direction, the circuit board 30 and the laser module 20 are located in the same receiving cavity 10a, with the circuit board 30 directly facing the laser generating part of the laser module 20; the first cooling fan 40 is located on the upper side of the laser module 20 and on the side of the circuit board 30 facing the laser module 20; the first cooling fan 40 and the laser module 20 are stacked in the vertical direction so that the first gas output from the first cooling fan 40 from top to bottom can carry away the heat of the circuit board 30 and the laser generating part of the laser module 20.

[0118] Please refer to the attached document. Figures 1-5 In this embodiment, the laser head device 100 further includes a top plate 60, which is disposed on the top of the housing 10 and is integrally or separately connected to the housing 10. When the top plate 60 is integrally connected to the housing 10, the connection strength between the top plate 60 and the housing 10 is improved, ensuring the connection stability between the top plate 60 and the housing 10. When the top plate 60 is separately connected to the housing 10, it facilitates the connection or detachment of the top plate 60, improving the ease of installation and removal. The top plate 60 supports a first cooling fan 40, which is located on the side of the top plate 60 facing the receiving cavity 10a. This allows the first cooling fan 40 to be arranged above the circuit board 30 and the laser generating part of the laser module 20, thereby facilitating the exhaust end of the first cooling fan 40 to face the circuit board 30 and the laser generating part of the laser module 20.

[0119] The top plate 60 is provided with first heat dissipation holes 60a, each of which connects to the external environment and the receiving cavity 10a. The exhaust end of the first cooling fan 40 faces the first heat dissipation hole 60a and connects to the external environment through the first heat dissipation hole 60a, so that the gas in the external environment can flow to the receiving cavity 10a through the first heat dissipation hole 60a, thereby facilitating the removal of heat from the receiving cavity 10a by the gas in the external environment.

[0120] Please refer to the attached document. Figures 1-5 In this embodiment, the laser head device 100 further includes a base plate 70, which is disposed at the bottom of the housing 10 and is integrally or separately connected to the housing 10. When the base plate 70 is integrally connected to the housing 10, the connection strength between the base plate 70 and the housing 10 is improved, ensuring the connection stability between the base plate 70 and the housing 10. When the base plate 70 is separately connected to the housing 10, it is convenient for the base plate 70 to be connected to or detached from the housing 10, improving the ease of installation and removal of the base plate 70. The base plate 70 is provided with a first through hole 70a, which is used for the laser output head of the laser module 20 to pass through, so that the laser output head of the laser module 20 can extend to the external environment through the space of the first through hole 70a, thereby facilitating the laser output head of the laser module 20 to perform laser engraving on the workpiece to be engraved in the external environment.

[0121] The first through hole 70a is disposed on the lower side of the receiving cavity 10a. The first through hole 70a connects to the receiving cavity 10a and connects to the first receiving space 10b, the first heat dissipation duct 20a and the first heat dissipation hole 60a through the receiving cavity 10a. The first heat dissipation hole 60a and the first through hole 70a are respectively located on the upper and lower sides of the receiving cavity 10a, so that the first gas drawn by the first cooling fan 40 passes through the first heat dissipation hole 60a, the first receiving space 10b, the first heat dissipation duct 20a, the first through hole 70a and the external environment in sequence, thereby facilitating the first gas to carry away the heat of the circuit board 30 and the laser generating part of the laser module 20 and discharge it to the external environment through the first through hole 70a.

[0122] Please refer to the attached document. Figures 1-5 In this embodiment, the receiving cavity 10a is further provided with a second receiving space 10c, which is disposed on one side of the first receiving space 10b; the first receiving space 10b and the second receiving space 10c are connected; the laser head device 100 also includes a heat sink 80, which is installed on the housing 10 and located in the second receiving space 10c; the heat sink 80 is provided with a second heat dissipation air duct 80a; the second heat dissipation air duct 80a is disposed on one side of the first heat dissipation air duct 20a and is compatible with the same receiving cavity 10a; the heat sink 80 is connected to the laser module 20, and the heat sink 80 contacts the laser module 20 and dissipates heat from the laser module 20 to achieve a multi-air duct arrangement, thereby facilitating multi-path heat dissipation of the laser module 20, avoiding only one heat dissipation air duct, and improving the heat dissipation effect of the laser module 20.

[0123] Please refer to the attached document. Figures 1-5 In embodiments 8-9 of this application, both the first heat dissipation duct 20a and the second heat dissipation duct 80a extend along the length of the housing 10, so that the first gas and the second gas pass through the first heat dissipation duct 20a and the second heat dissipation duct 80a respectively in the vertical direction; the second heat dissipation duct 80a is arranged at intervals from the first heat dissipation duct 20a; the first heat dissipation duct 20a is used for the first gas to pass through, the first gas passes through the laser module 20, and carries away part of the heat output by the laser module 20; the laser module 20 is in contact with the heat sink 80, the heat sink 80 and the laser module 20 exchange heat, and the laser module 20 is cooled by contact; the second heat dissipation duct 80a is used for the second gas to pass through, the second gas passes through the heat sink 80, and the heat sink 80 is cooled by air, so that the laser module 20 can be cooled by multiple paths in the receiving cavity 10a, so that the first gas and the second gas can cool the laser module 20 at the same time, avoiding only one heat dissipation duct, and improving the heat dissipation effect of the laser module 20.

[0124] Please refer to the attached document. Figures 1-5In this embodiment, the laser head device 100 includes a second cooling fan 90. The second cooling fan 90 and the laser module 20 are located in different directions of the heat sink 80, so that the second cooling fan 90 and the laser module 20 can make full use of the different spaces of the heat sink 80. The exhaust end of the second cooling fan 90 faces the second heat dissipation duct 80a and outputs a second gas into the second heat dissipation duct 80a, so that the second cooling fan 90 outputs the second gas to drive the gas in the second heat dissipation duct 80a, thereby realizing heat dissipation of the heat sink 80.

[0125] The second cooling fan 90 is installed on the other side wall of the heat sink 80, and the heat sink 80 supports the second cooling fan 90 and the laser module 20. The second cooling fan 90 is located on the upper side of the heat sink 80, and the laser module 20 is located on the periphery of the heat sink 80. This allows the second cooling fan 90 to be fixed on the upper side of the heat sink 80, thereby facilitating the second cooling fan 90 and the laser module 20 to be located in different directions on the heat sink 80.

[0126] Alternatively, the second cooling fan 90 is mounted on the housing 10, and the heat sink 80 supports the second cooling fan 90 and the laser module 20; the second cooling fan 90 is located on the upper side of the heat sink 80, and the laser module 20 is located on the periphery of the heat sink 80, so that the second cooling fan 90 can be fixed to the housing 10, thereby facilitating the second cooling fan 90 and the laser module 20 to be located in different directions of the heat sink 80.

[0127] Please refer to the attached document. Figures 1-5 In embodiments of this application, the laser module 20 is provided with a first mounting portion 21, which is mounted on one side wall of the heat sink 80. The first mounting portion 21 is detachably connected to the heat sink 80 and can elastically fit against the heat sink 80. Under elastic force, the first mounting portion 21 is tightly attached to one side wall of the heat sink 80 to maintain the elastic mounting state of the laser module 20 relative to the heat sink 80, ensuring the installation stability of the laser module 20 relative to the heat sink 80, overcoming assembly tolerances and dimensional tolerances, and improving the installation convenience of the laser module 20.

[0128] Multiple connection positions are provided between the first mounting part 21 and the heat sink 80. The multiple connection positions are arranged in a square array or a ring array. By arranging multiple connection positions, the connection strength between the first mounting part 21 and the heat sink 80 is increased, and the failure of one connection point will prevent the first mounting part 21 and the heat sink 80 from losing their connection effect. Optionally, there are four connection positions.

[0129] The heat sink 80 is provided with a second mounting part 81, which is arranged opposite to the first mounting part 21. The first mounting part 21 is disposed on one side of the second mounting part 81 and is elastically mounted on the second mounting part 81, so that the opposite side walls of the first mounting part 21 and the second mounting part 81 are in a flat and close fit. The elastic deformation allows the second mounting part 81 to be finely adjusted when subjected to force, ensuring that the side walls of the first mounting part 21 and the side walls of the second mounting part 81 are always flat and close fit, ensuring the installation stability of the laser module 20 relative to the heat sink 80, overcoming assembly tolerances and dimensional tolerances, and improving the installation convenience of the laser module 20.

[0130] In this embodiment, the laser module 20 further includes a connecting shaft 22 and a first elastic member 23. The connecting shaft 22 is movably inserted through the second mounting portion 81 and connected to the first mounting portion 21. The first elastic member 23 is sleeved on the connecting shaft 22 and elastically acts on the end of the connecting shaft 22 and the second mounting portion 81 to apply an elastic force to the first mounting portion 21, so that the first mounting portion 21 is tightly attached to the second mounting portion 81 under the elastic force. This allows the first mounting portion 21 to achieve an elastic connection with the second mounting portion 81 through the connecting shaft 22 and the first elastic member 23. This facilitates the maintenance of the fit between the first mounting portion 21 and the second mounting portion 81 under the elastic action of the first elastic member 23, ensuring the installation stability of the laser module 20 relative to the heat sink 80, overcoming assembly tolerances and dimensional tolerances, and improving the installation convenience of the laser module 20.

[0131] Please refer to the attached document. Figures 1-5 In embodiments of this application, the second mounting portion 81 is provided with a first moving hole 81a, and the connecting shaft 22 passes through the first moving hole 81a; the end of the connecting shaft 22 is located on the side of the second mounting portion 81 facing away from the first mounting portion 21, and contacts one end of the first elastic member 23, and the other end of the first elastic member 23 elastically contacts the side wall of the second mounting portion 81 facing away from the first mounting portion 21; so that the elastic force applied by the first elastic member 23 can be transmitted from the second mounting portion 81 toward the first mounting portion 21, thereby facilitating the first mounting portion 21 to maintain a close fit with the heat sink 80.

[0132] The connecting shaft 22 and the first elastic element 23 are in a one-to-one correspondence; the connecting shaft 22 and the first elastic element 23 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 21. The multiple sets of elastic connection structures are arranged in a square array, a ring array, or a strip array. By arranging multiple sets of elastic connection structures, the connection stability between the first mounting part 21 and the second mounting part 81 is increased, and the failure of one set of elastic connection structures is avoided, which would cause the first mounting part 21 and the second mounting part 81 to lose their connection.

[0133] Please refer to the attached document. Figures 1-5In embodiments 8 and 9 of this application, the first elastic member 23 is sleeved on the connecting shaft 22 and is located on the outer periphery of the connecting shaft 22; the connecting shaft 22 is provided with a first shaft body 221 and a second shaft body 222, the first shaft body 221 and the second shaft body 222 are arranged sequentially along the length direction of the connecting shaft 22, and the first shaft body 221 is connected to the second shaft body 222; the first shaft body 221 serves as an optical shaft and passes through a first moving hole 81a; the portion of the first shaft body 221 that extends beyond the first moving hole 81a is sleeved by the first elastic member 23, and the first elastic member 23 is located on the outer periphery of the portion of the first shaft body 221 that extends beyond the first moving hole 81a; the second shaft body 222 serves as a threaded shaft, the second shaft body 222 is located on the side of the second mounting part 81 facing the first mounting part 21, and is screwed to the first mounting part 21.

[0134] At this time, the connecting shaft 22 is stationary relative to the first mounting part 21 via the second shaft 222, and the second mounting part 81 is in a movable state relative to the connecting shaft 22 through the first moving hole 81a cooperating with the first shaft 221, so that the second mounting part 81 can be finely adjusted relative to the first mounting part 21. The first elastic element 23 overcomes the assembly tolerance and dimensional tolerance, maintains the fit between the first mounting part 21 and the heat sink 80, and ensures the installation stability of the laser generator of the laser module 20 relative to the heat sink 80.

[0135] Please refer to the attached document. Figures 1-5 In this embodiment, the focusing component assembly 50 further includes a pressing member 52; the focusing component 51 is capable of focusing in its extended state; the pressing member 52 is pressably connected to the housing 10 and extends or retracts relative to the housing 10; when the pressing member 52 extends relative to the housing 10, the peripheral sidewall of the pressing member 52 contacts the upper sidewall of the focusing component 51 and restricts the upward movement of the focusing component 51 to maintain the focusing state of the focusing component 51; when the pressing member 52 retracts relative to the housing 10, the focusing component 51 can pass through the pressing member 52 and retract into the housing 10, so that the user can automatically retract the focusing component 51 by pressing the pressing member 52, avoiding the need for the focusing component 51 to be lifted and engaged to retract, saving operation steps and improving the ease of operation of the focusing component assembly 50.

[0136] Please refer to the attached document. Figures 1-5 In this embodiment of the application, the focusing member 51 is disposed at the corner of the housing 10; the housing 10 is provided with a support portion 11, which is located in the inner space of the housing 10 and extends along the length direction of the housing 10; the focusing member 51 is movably connected to the support portion 11 and moves along the length direction of the support portion 11, so as to adjust the length position of the focusing member 51 relative to the support portion 11, thereby facilitating the moving of the focusing member 51 relative to the housing 10 through the support portion 11, so as to extend to the lower side of the support portion 11 or retract to the support portion 11.

[0137] The pressing member 52 passes through the support portion 11 during the pressing process, so that the focusing member 51 can pass through the pressing member 52 and retract into the support portion 11. This facilitates the pressing member 52 to automatically retract the focusing member 51, avoiding the need for the focusing member 51 to be lifted and locked to retract, saving operation steps and improving the ease of operation of the focusing member assembly 50.

[0138] The pressing direction of the pressing member 52 is arranged perpendicularly to or at an angle to the moving direction of the focusing member 51. When the pressing direction of the pressing member 52 is perpendicular to the moving direction of the focusing member 51, the smoothness of the focusing member 51 being inserted relative to the pressing member 52 is improved. When the pressing member 52 moves to the right, the focusing member 51 retracts upward; when the pressing member 52 moves to the left, the focusing member 51 extends downward.

[0139] Please refer to the attached document. Figures 1-5 In embodiment 10, the support portion 11 is provided with a second moving hole 11a, which extends along the length of the support portion 11 and communicates downward with the external environment; the housing 10 is provided with a first clearance hole 10d, which extends along the length of the housing 10 and communicates horizontally with the second moving hole 11a and the external environment; the focusing member 51 is provided with a focusing rod 511 and a first operating member 512, and the focusing rod 511 movably passes through the second moving hole 11a to facilitate adjustment of the focusing rod. The position of the focusing rod 511 relative to the second moving hole 11a facilitates the movement of the focusing rod 511 relative to the support part 11 through the space of the second moving hole 11a. The first operating member 512 is connected to the focusing rod 511. The first operating member 512 passes through the first clearance hole 10d in the horizontal direction and is exposed to the external environment. The first operating member 512 is used for user operation. This allows the first operating member 512 to extend to the external environment through the space of the first clearance hole 10d, improving the user's ease of operation of the first operating member 512. When the first operating member 512 is subjected to the downward pressure of the user, the focusing rod 511 moves downward with the downward pressure of the first operating member 512. The focusing end of the focusing rod 511 is gradually exposed to the external environment and can focus, thereby achieving the focusing effect of the focusing rod 511.

[0140] Please refer to the attached document. Figures 1-5 In the embodiments of this application, the focusing component assembly 50 further includes a second elastic member 53, which is located within the support portion 11 and applies an elastic force to the focusing component 51; the focusing component 51 elastically retracts relative to the housing 10 under the elastic force of the second elastic member 53; so that the focusing component 51 can automatically rise without resistance, thereby facilitating the automatic reset of the focusing component 51 and improving the retraction convenience of the focusing component 51.

[0141] The second elastic element 53 is sleeved on the focusing rod 511 and housed in the second moving hole 11a. The second elastic element 53 is spirally distributed along the axis of the focusing rod 511, and its two ends contact the first operating element 512 and the support part 11, respectively. When the focusing rod 511 extends out of the lower side wall of the housing 10, the second elastic element 53 is subjected to the pressure of the first operating element 512 and is in a compressed state. When the first operating element 512 loses its pressure, the second elastic element 53 applies an elastic force to the first operating element 512 so that the second elastic element 53 can be adjusted from the compressed state to the unfolded state, thereby facilitating the elastic retraction of the focusing rod 511 by the first operating element 512 driven by the second elastic element 53.

[0142] Please refer to the attached document. Figures 1-5 In this embodiment of the application, the pressing member 52 includes a pressing part 521 and a moving part 522. The pressing part 521 is connected to the moving part 522 and exposed in the housing 10. The pressing part 521 is used for pressing by the user, so that the user can press the pressing part 521 in the external environment, thus improving the pressing convenience of the pressing part 521. The moving part 522 is movably connected to the support part 11 and moves in the horizontal direction to adjust the position of the moving part 522 relative to the support part 11, so that the moving part 522 moves relative to the support part 11 as the pressing part 521 presses, and the focusing rod 511 moves up and down relative to the support part 11. The moving part 522 is provided with a first through hole 522a.

[0143] When the pressing part 521 is in the pressing state, the first through hole 522a is arranged opposite to the focusing rod 511, and the focusing rod 511 is allowed to pass through the first through hole 522a, so that the focusing rod 511 can move upward and be adjusted from the extended state to the retracted state; so that the focusing rod 511 can move in the vertical direction relative to the moving part 522 through the space of the first through hole 522a, ensuring the retraction effect of the focusing rod 511.

[0144] When the pressing part 521 is in the non-pressing state, the first through hole 522a is misaligned with the focusing rod 511, the moving part 522 is located above the focusing rod 511, and restricts the upward movement of the focusing rod 511 to maintain the extended state of the focusing rod 511, so that the moving part 522 can apply pressure to the focusing rod 511 and prevent the focusing rod 511 from retracting unexpectedly.

[0145] Please refer to the attached document. Figures 1-5 In the embodiments of this application, the support portion 11 is provided with a third moving hole 11b, which is arranged along the horizontal direction and is arranged in a cross shape with the second moving hole 11a; the third moving hole 11b is an elongated hole with the axis of the elongated hole arranged horizontally; so that the pressing direction of the pressing member 52 is arranged perpendicular to the moving direction of the focusing member 51.

[0146] The movable part 522 is movably inserted through the third movable hole 11b. The movable part 522 moves within the third movable hole 11b to adjust its position relative to the third movable hole 11b, thereby facilitating its movement relative to the support part 11. The movable part 522 controls the relative position of the first through hole 522a and the focusing rod 511. When the pressing part 521 moves the movable part 522 to the right under the user's pressure, the focusing rod 511 moves upward relative to the first through hole 522a, so that the focusing rod 511 retracts into the housing 10.

[0147] A positioning hole 10e is provided on one side wall of the housing 10 corresponding to the first operating member 512. The positioning hole 10e is arranged along a long strip and extends horizontally. The moving part 522 is connected to a positioning pin 5221. The positioning pin 5221 is movably inserted through the positioning hole 10e to adjust the position of the positioning pin 5221 relative to the positioning hole 10e. The positioning pin 5221 is positioned by the positioning hole 10e in the vertical direction. The positioning pin 5221 moves horizontally with the horizontal movement of the moving part 522 so that the positioning hole 10e and the positioning pin 5221 cooperate to limit the movement range of the moving part 522. The two ends of the positioning hole 10e serve as the two moving ends of the moving part 522 to prevent the moving part 522 from detaching from the support part 11.

[0148] Please refer to the attached document. Figures 1-5 In embodiment 11, the laser head device 100 further includes a fume hood 91, which is disposed on the outside of the housing 10 and installed on the housing 10. The fume hood 91 is arranged around the laser output head of the laser module 20 and provides peripheral protection for the laser output head of the laser module 20. The fume hood 91 is provided with a fume exhaust section 911, which is provided with a fume exhaust channel 911a. The inner diameter of the fume exhaust channel 911a gradually narrows along the vertical direction, and the fume exhaust channel 911a converges towards the laser output head of the laser module 20. The smoke is discharged from the fume exhaust channel 911a to the workpiece being engraved, which avoids the backflow of smoke during the operation of the laser output head of the laser module 20, reduces the impact of smoke on laser engraving, and improves the engraving effect of the laser module 20.

[0149] The smoke exhaust channel 911a connects to the receiving cavity 10a. When the laser module 20 is in operation, it generates heat, which can be discharged outward along the receiving cavity 10a and the smoke exhaust channel 911a. This allows the smoke in the receiving cavity 10a to flow downward through the smoke exhaust channel 911a toward the workpiece being engraved, thus facilitating the discharge of smoke from the smoke exhaust channel 911a to the workpiece being engraved. This avoids backflow of smoke during the operation of the laser output head of the laser module 20, reduces the impact of smoke on laser engraving, and improves the engraving effect of the laser module 20.

[0150] The fume hood 91 includes an outer cover body 912 and a fume exhaust arm 913; the fume exhaust arm 913 is part of the fume exhaust section 911; the outer cover body 912 is detachably connected to the housing 10, so that the outer cover body 912 can be connected to or detached from the housing 10, thereby facilitating the detachable connection of the fume hood 91 to the housing 10 through the outer cover body 912, improving the ease of installation and removal of the fume hood 91. Optionally, the outer cover body 912 is detachably connected to the housing 10 by bolts. The outer cover body 912 includes an outer cover arm 9121, which is located on the outer periphery of the fume exhaust arm 913. The fume exhaust arm 913 is provided with a fume exhaust channel 911a, so that smoke can be discharged from the fume exhaust arm 913 to the workpiece being engraved, avoiding smoke backflow during the operation of the laser output head of the laser module 20, reducing the impact of smoke on laser engraving, and improving the engraving effect of the laser module 20.

[0151] The outer cover body 912 is provided with a second through hole 912a, which is located between the outer cover support arm 9121 and the smoke exhaust support arm 913; the focusing rod 511 passes through the second through hole 912a and can extend beyond the smoke exhaust hood 91, so that the focusing rod 511 can pass through the space of the second through hole 912a relative to the smoke exhaust hood 91.

[0152] Please refer to the attached document. Figures 1-6 In this embodiment, the rear sidewall of the housing 10 is provided with a guide rail portion 12; the laser head device 100 also includes a clamping assembly 92, which is disposed on the rear side of the housing 10; the clamping assembly 92 includes a mounting base 921, a clamping seat 922, and a second operating member 923; the mounting base 921 is used to install on the main body of the laser engraving machine so that the clamping assembly 92 can be connected to the main body of the laser engraving machine through the mounting base 921; the clamping seat 922 is movably connected to the mounting base 921 and moves relative to the mounting base 921 so as to adjust the position of the clamping seat 922 relative to the mounting base 921; the second operating member 923 swings relative to the mounting base 921 under human action and drives the clamping seat 922 to move closer to the mounting base 921 so as to quickly clamp the guide rail portion 12, thereby realizing the quick clamping of the laser module 20 by the clamping seat 922, avoiding the need to use tools for tightness adjustment, and improving the clamping convenience of the clamping assembly 92.

[0153] Please refer to the attached document. Figures 1-5In embodiment 12, the mounting base 921 is connected to a guide shaft 9211, the guide shaft 9211 passes through a clamping seat 922, and the clamping seat 922 moves along the axis of the guide shaft 9211; the second operating member 923 is pivotally connected to the guide shaft 9211 and is located outside the clamping seat 922 to facilitate adjustment of the position of the second operating member 923 relative to the guide shaft 9211; the second operating member 923 is provided with a cam portion 9231, the cam portion 9231 directly contacts or The cam portion 9231 indirectly contacts the outer wall of the clamping seat 922. As the second operating member 923 swings, the clamping seat 922 moves, causing the clamping seat 922 to clamp or loosen the guide rail portion 12. This allows the second operating member 923 to abut against the clamping seat 922 and the guide rail portion 12 through the cam portion 9231, thereby achieving rapid clamping of the laser module 20 by the clamping seat 922. This avoids the need to use tools for tightness adjustment and improves the clamping convenience of the clamping assembly 92.

[0154] A first position and a second position are provided between the cam portion 9231 and the outer wall of the clamping seat 922, so that the second operating member 923 can drive the cam portion 9231 to swing relative to the first position and the second position under manual action. When the cam portion 9231 is in the first position, the end of the second operating member 923 is close to the outer wall of the clamping seat 922, and the clamping seat 922 clamps the guide rail portion 12, so as to realize that the clamping seat 922 clamps the laser module 20. When the cam portion 9231 is in the second position, the end of the second operating member 923 is away from the outer wall of the clamping seat 922, and the clamping seat 922 releases the guide rail portion 12, so as to realize that the clamping seat 922 releases the laser module 20, avoiding the need to use tools for tension adjustment and improving the clamping convenience of the clamping assembly 92.

[0155] Please refer to the attached document. Figures 1-5 In embodiment 12 of this application, the distance between the portion of the cam portion 9231 relative to the first position and the swing axis of the cam portion 9231 is A; the distance between the portion of the cam portion 9231 relative to the second position and the swing axis of the cam portion 9231 is B, where B is greater than A; the portion of the cam portion 9231 relative to the first position and the portion of the cam portion 9231 relative to the second position form an arc transition, which forms a gradual contour line, reduces contact stress concentration, reduces wear, and ensures that the torque of the cam portion 9231 is smoothly transmitted during swing, avoiding instantaneous overload caused by geometric abrupt changes.

[0156] Please refer to the attached document. Figures 1-5In embodiment 12 of this application, the mounting base 921 is provided with a second through hole 921a, and the clamping base 922 is provided with a third through hole 922a, the third through hole 922a communicating with the second through hole 921a; the guide shaft 9211 passes through the second through hole 921a and the third through hole 922a, so that the guide shaft 9211 passes through the mounting base 921 and the clamping base 922. One end of the guide shaft 9211 is provided with a limiting part 92111; the limiting part 92111 contacts the mounting base 921 and is limited by the mounting base 921; the other end of the guide shaft 9211 is hinged to the cam part 9231 of the second operating member 923, so that the cam part 9231 of the second operating member 923 and the limiting part 92111 respectively limit the two ends of the guide shaft 9211, preventing the guide shaft 9211 from disengaging from the mounting base 921 and the clamping base 922.

[0157] In the second embodiment of the application, a laser engraving machine includes a laser head device 100 and a laser engraving machine body. The laser engraving machine body supports the laser head device 100 so that the laser head device 100 is fixed to the laser engraving machine body, thereby facilitating the laser head device 100 to perform laser engraving on the workpiece to be engraved in the vertical direction.

[0158] Compared with the prior art, the beneficial effects of this utility model are:

[0159] This utility model provides a laser head device 100 and a laser engraving machine. The housing 10 has a receiving cavity 10a; a first receiving space 10b is formed within the receiving cavity 10a; a laser module 20 outputs laser light to the workpiece to be engraved; the laser module 20 is housed in the receiving cavity 10a and is directly or indirectly connected to the housing 10; a circuit board 30 is housed in the receiving cavity 10a and is disposed on one side of the laser module 20; the circuit board 30 is arranged along the length or width of the receiving cavity 10a; a first heat dissipation duct 20a is formed between the circuit board 30 and the laser module 20, the first heat dissipation duct 20a connecting to the first receiving space 10b and allowing first gas flowing through the first receiving space 10b to pass through; a first cooling fan 40 is installed on the top of the housing 10. The exhaust end of the first cooling fan 40 faces the outside of the housing 10, and the exhaust end of the first cooling fan 40 faces the receiving cavity 10a. The first gas drawn in through the exhaust end of the first cooling fan 40 is output to the first receiving space 10b and the first heat dissipation duct 20a. At this time, the first gas carries away the heat generated by the laser module 20 and the heat generated by the circuit board 30 when passing through the first heat dissipation duct 20a. The focusing component assembly 50 includes a focusing component 51. The focusing component 51 is movably connected to the housing 10 and extends and retracts relative to the bottom of the housing 10. The focusing component 51 can focus when it is extended, which combines the effects of focusing, heat dissipation of the circuit board 30 and heat dissipation of the laser module 20, avoiding the limitation of only having a focusing effect and improving the heat dissipation effect of the laser head device 100.

[0160] 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.

[0161] 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.

[0162] 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 device, characterized in that, The laser head assembly, used in laser engraving machines, includes: The shell has a receiving cavity; a first receiving space is formed in the receiving cavity; A laser module is used to output laser beams to the workpiece to be engraved; the laser module is housed in the receiving cavity and is directly or indirectly connected to the housing; A circuit board is housed in the receiving cavity and disposed on one side of the laser module; the circuit board is arranged along the length or width of the receiving cavity; a first heat dissipation channel is formed between the circuit board and the laser module, the first heat dissipation channel is connected to the first receiving space and allows the first gas flowing through the first receiving space to pass through; A first cooling fan is installed on the housing. The exhaust end of the first cooling fan faces the outside of the housing, and the exhaust end of the first cooling fan faces the receiving cavity. The first gas drawn in through the exhaust end of the first cooling fan is output to the first receiving space and the first cooling duct. At this time, the first gas carries away the heat generated by the laser module and the heat generated by the circuit board when passing through the first cooling duct. A focusing component assembly includes a focusing component; the focusing component is movably connected to the housing and extends and retracts relative to the bottom of the housing; the focusing component is capable of focusing in the extended state.

2. The laser head device according to claim 1, characterized in that, The circuit board is located within the receiving cavity and is protected by the housing; The circuit board carries multiple electronic components, which are located on the side of the circuit board facing the first heat dissipation duct and are arranged at intervals from the laser module.

3. The laser head device according to claim 1, characterized in that, The circuit board is directly opposite an inner wall of the receiving cavity; there is a gap between the surface of the circuit board and an inner wall of the receiving cavity; the circuit board is suspended in the receiving cavity and is stationary relative to the housing. When the housing is arranged vertically, the circuit board and the laser module are located in the same receiving cavity, with the circuit board directly opposite the laser generating part of the laser module; The first cooling fan is located above the laser module and on the side of the circuit board facing the laser module; the first cooling fan and the laser module are stacked vertically.

4. The laser head device according to claim 1, characterized in that, The laser head device also includes a top plate, which is disposed on the top of the housing and is integrally connected to or separately connected to the housing; the top plate supports the first cooling fan, which is located on the side of the top plate facing the receiving cavity; The top plate is provided with first heat dissipation holes, and each of the first heat dissipation holes is connected to the external environment and the receiving cavity; The exhaust end of the first cooling fan faces the first heat dissipation hole and is connected to the external environment through the first heat dissipation hole; The laser head device also includes a base plate, which is disposed at the bottom of the housing and is integrally connected to or separately connected to the housing; the base plate is provided with a first through hole for the laser output head of the laser module to pass through; The first through hole is disposed on the lower side of the receiving cavity, the first through hole connects to the receiving cavity, and connects to the first receiving space, the first heat dissipation air duct and the first heat dissipation hole through the receiving cavity; The first heat dissipation hole and the first through hole are located on the upper and lower sides of the receiving cavity, respectively.

5. The laser head device according to claim 1, characterized in that, The receiving cavity is further provided with a second receiving space, which is disposed on one side of the first receiving space; the first receiving space and the second receiving space are connected. The laser head device further includes a heat sink, which is mounted on the housing and located in the second receiving space; the heat sink is provided with a second heat dissipation duct; the second heat dissipation duct is disposed on one side of the first heat dissipation duct and is compatible with the same receiving cavity; The heat sink is connected to the laser module, and the heat sink contacts the laser module and dissipates heat from the laser module. Both the first and second heat dissipation ducts extend along the length of the housing; the second heat dissipation duct is arranged at an interval from the first heat dissipation duct. The first heat dissipation duct is used to allow the first gas to pass through, which passes through the laser module and carries away some of the heat output by the laser module; The laser module is in contact with the heat sink, and the heat sink exchanges heat with the laser module and performs contact-type heat dissipation on the laser module; the second heat dissipation duct is used for the passage of the second gas, which passes through the heat sink and performs air cooling on the heat sink, so that the laser module performs multi-path heat dissipation within the receiving cavity. The laser head device includes a second cooling fan, and the second cooling fan and the laser module are respectively located in different directions of the heat sink; the exhaust end of the second cooling fan faces the second cooling duct and outputs a second gas into the second cooling duct; The second cooling fan is installed on the other side wall of the heat sink, and the heat sink supports the second cooling fan and the laser module; the second cooling fan is located on the upper side of the heat sink, and the laser module is located on the periphery of the heat sink; Alternatively, the second cooling fan is mounted on the housing, and the heat sink supports the second cooling fan and the laser module; the second cooling fan is located on the upper side of the heat sink, and the laser module is located on the periphery of the heat sink.

6. The laser head device according to claim 5, characterized in that, The laser module is provided with a first mounting part, which is mounted on one side wall of the heat sink; the first mounting part is detachably connected to the heat sink and can elastically fit against the heat sink; the first mounting part is tightly attached to one side wall of the heat sink under elastic force. The first mounting part and the heat sink are provided with multiple connection positions; 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 opposite side walls of the first mounting part and the second mounting part are in a flat and fitted state. The laser module further includes a connecting shaft and a first elastic element; the connecting shaft movably passes through the second mounting portion and is connected to the first mounting portion; The first 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. The second mounting part is provided with a first movable hole, and the connecting shaft passes through the first 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 first elastic member, and the other end of the first elastic member elastically contacts the side wall of the second mounting part away from the first mounting part. The connecting shaft and the first elastic element are in a one-to-one correspondence; the connecting shaft and the first 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 a strip array. The first 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 first movable hole; the portion of the first shaft that extends beyond the first movable hole is fitted with a first elastic member, which is located on the outer periphery of the portion of the first shaft that extends beyond the first 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.

7. The laser head device according to claim 1, characterized in that, The focusing component assembly further includes a pressing component; the focusing component is capable of focusing in the extended state; the pressing component is pressably connected to the housing and extends or retracts relative to the housing; When the pressing member extends relative to the housing, the peripheral sidewall of the pressing member contacts the upper sidewall of the focusing member and restricts the upward movement of the focusing member to maintain the focusing state of the focusing member; When the pressing member retracts relative to the housing, the focusing member can pass through the pressing member and retract into the housing; The focusing element is located at the corner of the housing; The housing is provided with a support portion, which is located in the inner space of the housing and extends along the length of the housing; The focusing element is movably connected to the support portion and moves along the length of the support portion to extend to the underside of the support portion or retract into the support portion; The supporting portion of the pressing member passes through during the pressing process; The pressing direction of the pressing element is arranged perpendicularly to or at an angle to the moving direction of the focusing element. The support portion is provided with a second movable hole, which extends along the length of the support portion and communicates downward with the external environment; The housing is provided with a first clearance hole, which extends along the length of the housing and connects the second moving hole and the external environment in a horizontal direction; The focusing component is provided with a focusing rod and a first operating component. The focusing rod is movably passed through the second moving hole. The first operating component is connected to the focusing rod. The first operating component passes through the first clearance hole in the horizontal direction and is exposed to the external environment. The first operating component is used for user operation. When the first operating component is subjected to a downward pressure from the user, the focusing rod moves downward as the first operating component is pressed down, and the focusing end of the focusing rod is gradually exposed to the external environment and can focus. The focusing component assembly further includes a second elastic element, which is located within the support portion and applies an elastic force to the focusing component. The focusing element retracts elastically relative to the housing under the elastic force of the second elastic element; The second elastic element is sleeved on the focusing rod and housed in the second moving hole; the second elastic element is spirally distributed along the axis of the focusing rod, and the two ends of the second elastic element contact the first operating element and the support part respectively; When the focusing rod extends out of the lower side wall of the housing, the second elastic element is subjected to the resistance force of the first operating element and is in a compressed state.

8. The laser head device according to claim 7, characterized in that, The pressing component includes a pressing part and a moving part; the pressing part is connected to the moving part and exposed to the housing, and the pressing part is used for pressing by the user; The movable part is movably connected to the support part and moves in the horizontal direction, while the focusing rod moves in the vertical direction relative to the support part; the movable part is provided with a first through hole; When the pressing part is in the pressing state, the first through hole is arranged opposite to the focusing rod, and the focusing rod is allowed to pass through the first through hole, so that the focusing rod can move upward and be adjusted from the extended state to the retracted state; When the pressing part is in a non-pressed state, the first through hole is misaligned with the focusing rod, the moving part is located on the upper side of the focusing rod, and restricts the upward movement of the focusing rod to maintain the extended state of the focusing rod; The support portion is provided with a third movable hole, which is arranged horizontally and cross-shaped with the second movable hole; the third movable hole is an elongated hole with its axis arranged horizontally. The movable part is movably provided through the third movable hole, the movable part moves within the third movable hole, and adjusts the relative position of the first through hole and the focusing rod; The housing has a positioning hole on one side wall corresponding to the first operating member. The positioning hole is arranged along a long strip and extends in the horizontal direction. The moving part is connected to a positioning pin, which is movably inserted through the positioning hole and is positioned by the positioning hole in the vertical direction. The positioning pin moves horizontally as the moving part moves horizontally.

9. The laser head device according to claim 1, characterized in that, The rear side wall of the housing is provided with a guide rail section; The laser head device further includes a clamping assembly disposed on the rear side of the housing; the clamping assembly includes a mounting base, a clamping seat, and a second operating member; the mounting base is used to mount on the main body of the laser engraving machine; the clamping seat is movably connected to the mounting base and moves relative to the mounting base; the second operating member swings relative to the mounting base under manual action and drives the clamping seat closer to the mounting base to quickly clamp the guide rail portion; The mounting base is connected to a guide shaft, the guide shaft passes through the clamping base, and the clamping base moves along the axis of the guide shaft; The second operating member is pivotally connected to the guide shaft and is located outside the clamping seat; the second operating member is provided with a cam portion, which directly or indirectly contacts the outer wall of the clamping seat, and the cam portion drives the clamping seat to move as the second operating member pivots, so that the clamping seat clamps or releases the guide rail portion; A first position and a second position are provided between the cam portion and the outer wall of the clamping seat; when the cam portion is in the first position, the end of the second operating member is close to the outer wall of the clamping seat, and the clamping seat clamps the guide rail portion. When the cam portion is in the second position, the end of the second operating member moves away from the outer wall of the clamping seat, and the clamping seat releases the guide rail portion.

10. A laser engraving machine, characterized in that, It includes a laser head device 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 device.

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