Eight-axis six-head linkage laser engraving machine with cooling circulation structure

Abstract

The application relates to the technical field of laser engraving and carving machines, in particular to an eight-axis six-head linkage laser engraving and carving machine with a cooling circulation structure, which comprises a machine base, a workbench and a laser unit on the machine base, the laser unit comprising a laser seat, a laser generating module and a lens; the laser generating module comprises a shell and a distributor, the shell being internally provided with a pump source, a working medium module and a Q switch module, the three being respectively connected with a first cooling plate, a second cooling plate and a third cooling plate, and the shell being provided with a total heat dissipation channel; the distributor is internally provided with a total distribution channel, a first distribution channel, a second distribution channel and a third distribution channel, the first distribution channel, the second distribution channel and the third distribution channel being respectively provided with a first adjusting valve, a second adjusting valve and a third adjusting valve, and the total distribution channel being internally provided with a distribution valve with a heat-sensitive spring. The application can dynamically adjust the heat dissipation flow, shorten the preheating time, and adjust the heat dissipation weight of each component.

Description

Technical Field

[0001] This invention relates to the field of laser engraving machine technology, specifically to an eight-axis, six-head linkage laser engraving machine with a cooling circulation structure. Background Technology

[0002] In the field of precision machining, laser engraving machines are widely used for fine engraving and shaping operations in industries such as electronic components, molds, and jewelry due to their advantages of high processing accuracy and strong controllability. As the core energy output component of a laser engraving machine, the stability and lifespan of the solid-state laser directly determine the processing quality and operating efficiency of the machine, and the heat dissipation effect of the solid-state laser is one of the key factors affecting its performance.

[0003] Solid-state lasers contain several core heat-generating components, including a pump source for providing excitation energy, a Q-switch for controlling laser pulse output, and a working medium module for achieving population inversion and generating laser light. During the operation of a solid-state laser, the heating characteristics of these components differ significantly.

[0004] To control the operating temperature of solid-state lasers, current technologies generally employ a coolant circulation cooling method. This involves delivering coolant through circulation pipes to the heat dissipation structures of the heat-generating components inside the laser to remove excess heat. However, current coolant cooling solutions all use a fixed flow rate control strategy, meaning that regardless of the actual temperature and heating characteristics of the various heat-generating components in the solid-state laser, the coolant circulates within the system at a constant flow rate.

[0005] This fixed-flow cooling method is not conducive to the rapid reaching of the operating temperature of the solid-state laser. After the solid-state laser is started, it needs to operate within a specific temperature range to achieve stable laser output. However, in the existing solution, the initial flow rate of the coolant is large and the initial temperature is low, which will cause over-cooling effect on the heat-generating components, resulting in a significant extension of the preheating time from the start-up of the laser to the rated operating temperature.

[0006] In addition, due to the significant differences in the heating characteristics of each heat-generating component, the requirements for coolant flow rate also differ fundamentally. The fixed flow rate solution cannot make targeted adjustments based on the real-time temperature feedback of each component and the different weights of coolant flow rate. Summary of the Invention

[0007] The purpose of this invention is to address the aforementioned shortcomings in the prior art by providing an eight-axis, six-head linkage laser engraving machine with a cooling circulation structure.

[0008] The objective of this invention is achieved through the following technical solution: an eight-axis, six-head linkage laser engraving machine with a cooling circulation structure, comprising a base; the base is provided with a worktable and a laser unit; the laser unit is movably mounted on the top of the worktable; the laser unit includes a laser base, a laser generating module disposed within the laser base, and a lens disposed on the laser base; the lens is disposed at the bottom of the laser generating module;

[0009] The laser generating module includes a housing and a distributor; the distributor is located on the top of the housing; the housing contains a pump source, a working medium module, and a Q-switch module; the pump source is connected to a first cooling plate; the working medium module is connected to a second cooling plate; the Q-switch module is connected to a third cooling plate; the housing has a main heat dissipation channel.

[0010] The distributor has a main distribution channel; the distributor has a main water inlet and a main water outlet; the main water inlet is connected to the top of the main distribution channel; the main water outlet is connected to the bottom of the main distribution channel; the main water outlet is connected to the main heat dissipation channel; the distributor has a first distribution channel connected to a first cooling plate, a second distribution channel connected to a second cooling plate, and a third distribution channel connected to a third cooling plate; a first regulating valve is provided at the first distribution channel; a second regulating valve is provided at the second distribution channel; a third regulating valve is provided at the third distribution channel; a distribution valve is movably provided along the length of the main distribution channel; a thermal spring is provided between the distribution valve and the main distribution channel; the first distribution channel, the second distribution channel, and the third distribution channel are respectively connected to the main distribution channel.

[0011] The present invention is further configured such that the distribution valve includes a blocking part, a connecting part, and a separating part; the connecting part is disposed between the blocking part and the separating part; the blocking part, the connecting part, and the separating part are all cylindrical structures; the radius of the connecting part is smaller than the radius of the blocking part; the radius of the connecting part is smaller than the radius of the separating part; the blocking part and the separating part are movably and sealingly disposed in the main distribution channel; the blocking part is used to block the main water inlet and the main water outlet.

[0012] The invention is further configured such that the thermal spring is disposed between the end of the separator away from the connecting part and the main distribution channel; a mixing cavity is formed between the end of the separator away from the connecting part and the main distribution channel; the first distribution channel, the second distribution channel and the third distribution channel are respectively connected to the mixing cavity; the distributor is provided with a mixing outlet connected to the mixing cavity.

[0013] The present invention is further configured such that the pump source includes a substrate and a semiconductor chip disposed on the substrate; the first cooling plate includes a left cooling plate and a right cooling plate; the top of the left cooling plate is connected to a first distribution channel; the bottom of the left cooling plate is connected to the bottom of the right cooling plate; the top of the housing is provided with a first water inlet connected to the top of the right cooling plate; the left cooling plate and the right cooling plate respectively abut against the semiconductor chip.

[0014] The present invention is further configured such that a second conduit and a third conduit are provided inside the outer shell; a second water inlet and a third water inlet are provided on the top of the outer shell; one end of the second conduit is connected to a second distribution channel; the other end of the second conduit is connected to the second water inlet after passing through a second cooling plate; one end of the third conduit is connected to a third distribution channel; the other end of the third conduit is connected to the third water inlet after passing through a third cooling plate.

[0015] The present invention is further configured such that the top of the distributor is provided with a first adjustment channel, a second adjustment channel, and a third adjustment channel; the first adjustment valve is movably disposed in the first adjustment channel; the second adjustment valve is movably disposed in the second adjustment channel; and the third adjustment valve is movably disposed in the third adjustment channel.

[0016] The bottom of the distributor is provided with a first inlet channel communicating with a first cooling plate, a second inlet channel communicating with a second cooling plate, and a third inlet channel communicating with a third cooling plate; the first inlet channel is connected to the bottom of a first adjustment channel; the first distribution channel is connected to the side of a first adjustment channel; the second inlet channel is connected to the bottom of a second adjustment channel; the second distribution channel is connected to the side of a second adjustment channel; the third inlet channel is connected to the bottom of a third adjustment channel; and the third distribution channel is connected to the side of a third adjustment channel.

[0017] The present invention is further configured such that a tapered through hole is provided at the connection between the first entry channel and the first adjustment channel, the connection between the second entry channel and the second adjustment channel, and the connection between the third entry channel and the third adjustment channel; the first adjustment valve, the second adjustment valve, and the third adjustment valve each include a threaded portion and an adjustment portion located at the bottom of the threaded portion; the first adjustment channel, the second adjustment channel, and the third adjustment channel are respectively threadedly connected to the threaded portion; the threaded portion and the adjustment portion are both cylindrical structures; the radius of the adjustment portion is smaller than the radius of the threaded portion; and a tapered pin that mates with the tapered through hole is provided at the bottom of the adjustment portion.

[0018] The present invention is further configured such that the total heat dissipation channel includes a first heat dissipation channel and a second heat dissipation channel; the pump source is disposed on one side inside the housing; a heat-conducting plate is disposed on the other side inside the housing; the working medium module and the Q-switch module are both disposed on the heat-conducting plate; the first heat dissipation channel is disposed between the substrate and the housing; and the second heat dissipation channel is disposed between the heat-conducting plate and the housing.

[0019] The top of the first heat dissipation channel is connected to the main water outlet; the bottom of the first heat dissipation channel is connected to the bottom of the second heat dissipation channel; the top of the outer casing is provided with a heat dissipation outlet connected to the top of the second heat dissipation channel.

[0020] The present invention is further configured such that the base is provided with an X-axis linear module for driving the worktable to move along the X-axis direction.

[0021] The invention is further configured such that the workbench is provided with a gantry frame; the gantry frame is provided with six lifting seats arranged along the Y-axis direction; the gantry frame is provided with a Y-axis linear module for driving the lifting seats to move along the Y-axis direction;

[0022] Each lifting platform is equipped with a laser unit; each lifting platform is equipped with a Z-axis linear module for driving the lifting and lowering movement of the laser unit.

[0023] The beneficial effects of this invention are as follows: This invention uses a thermal spring and a distribution valve to work together. When the laser generating module is started, the low-temperature heat transfer fluid keeps the thermal spring from unfolding and closes the main heat dissipation channel, thus avoiding overcooling and shortening the preheating time. During operation, as the components heat up, the temperature of the heat transfer fluid rises, causing the thermal spring to unfold and adjusting the flow rate of the coolant in the main heat dissipation channel to achieve dynamic temperature control and ensure stable laser output.

[0024] In addition, the flow rate of heat transfer fluid entering the mixing chamber of each cooling plate can be controlled by each regulating valve. Based on the different heating characteristics and working states of the pump source, working medium module and Q switch module, the influence weight of the temperature of each component on the total heat dissipation can be adjusted to carry out targeted heat dissipation and improve heat dissipation efficiency. Attached Figure Description

[0025] The invention will be further illustrated with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the invention. For those skilled in the art, other drawings can be obtained based on the following drawings without any creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the laser unit of the present invention;

[0028] Figure 3 This is an internal structural diagram of the laser unit of the present invention;

[0029] Figure 4 This is a schematic diagram of the structure of the laser generating module of the present invention;

[0030] Figure 5 This is a cross-sectional view of the laser generating module of the present invention from a first perspective;

[0031] Figure 6 This is a cross-sectional view of the laser generating module of the present invention from a second perspective;

[0032] Figure 7 yes Figure 6 A magnified view of part A in the middle;

[0033] Figure 8 This is a cross-sectional view of the laser generating module of the present invention from a third-view perspective;

[0034] Figure 9 yes Figure 8 A magnified view of part B in the middle;

[0035] Figure 10 This is a cross-sectional view of the laser generating module of the present invention from a fourth perspective;

[0036] Figure 11 yes Figure 10 A magnified view of part C in the middle;

[0037] Figure 12 This is a cross-sectional view of the laser generating module of the present invention from the fifth perspective;

[0038] Figure 13 yes Figure 12 A magnified view of part D in the middle;

[0039] The components include: 1. Base; 11. Worktable; 12. Laser unit; 13. X-axis linear module; 14. Gantry frame; 15. Lifting seat; 16. Y-axis linear module; 17. Z-axis linear module; 21. Laser base; 22. Laser generating module; 23. Lens; 3. Housing; 4. Distributor; 41. Main distribution channel; 42. Main water inlet; 43. Main water outlet; 44. First distribution channel; 45. Second distribution channel; 46. Third distribution channel; 471. Mixing chamber; 472. Mixing outlet; 48. Thermal spring; 491. Blocking part; 492. Connecting part; 493. Separating part; 51. Substrate; 52. Semiconductor chip; 53. Left cooling plate; 54. Right... 55. Cooling plate; 56. First inlet; 57. First inlet channel; 6. First regulating channel; 6. Working medium module; 61. Second cooling plate; 62. Second conduit; 63. Second inlet; 64. Second inlet channel; 65. Second regulating channel; 7. Q switch module; 71. Third cooling plate; 72. Third conduit; 73. Third inlet; 74. Third inlet channel; 75. Third regulating channel; 81. First regulating valve; 82. Second regulating valve; 83. Third regulating valve; 84. Threaded part; 85. Adjusting part; 86. Tapered pin; 87. Tapered through hole; 91. First heat dissipation channel; 92. Second heat dissipation channel; 93. Heat-conducting plate; 94. Heat dissipation outlet. Detailed Implementation

[0040] The present invention will be further described in conjunction with the following embodiments.

[0041] Depend on Figures 1 to 13 As can be seen, the eight-axis six-head linkage laser engraving machine with cooling circulation structure described in this embodiment includes a base 1; the base 1 is provided with a worktable 11 and a laser unit 12; the laser unit 12 is movably disposed on the top of the worktable 11; the laser unit 12 includes a laser base 21, a laser generating module 22 disposed in the laser base 21, and a lens 23 disposed in the laser base 21; the lens 23 is disposed at the bottom of the laser generating module 22;

[0042] The laser generating module 22 includes a housing 3 and a distributor 4; the distributor 4 is located on the top of the housing 3; the housing 3 contains a pump source, a working medium module 6, and a Q-switch module 7; the pump source is connected to a first cooling plate; the working medium module 6 is connected to a second cooling plate 61; the Q-switch module 7 is connected to a third cooling plate 71; the housing 3 has a main heat dissipation channel.

[0043] The distributor 4 has a main distribution channel 41; the distributor 4 has a main water inlet 42 and a main water outlet 43; the main water inlet 42 is connected to the top of the main distribution channel 41; the main water outlet 43 is connected to the bottom of the main distribution channel 41; the main water outlet 43 is connected to the main heat dissipation channel; the distributor 4 has a first distribution channel 44 connected to the first cooling plate, a second distribution channel 45 connected to the second cooling plate 61, and a third distribution channel 46 connected to the third cooling plate 71; a first regulating valve 81 is provided at the first distribution channel 44; a second regulating valve 82 is provided at the second distribution channel 45; a third regulating valve 83 is provided at the third distribution channel 46; a distribution valve is movably provided along the length of the main distribution channel 41; a thermal spring 48 is provided between the distribution valve and the main distribution channel 41; the first distribution channel 44, the second distribution channel 45, and the third distribution channel 46 are respectively connected to the main distribution channel 41.

[0044] Specifically, in normal use, the eight-axis six-head linkage laser engraving machine with cooling circulation structure described in this embodiment has the following functions: the first cooling plate is used to assist in cooling the pump source; the second cooling plate 61 is used to assist in cooling the working medium module 6; the third cooling plate 71 is used to assist in cooling the Q switch module 7; the total heat dissipation channel is used to cool the entire outer shell 3; and the total water inlet 42 is connected to external coolant.

[0045] The heat transfer fluid flowing in the first cooling plate can flow into the main distribution channel 41 through the first distribution channel 44. The heat transfer fluid flowing in the second cooling plate 61 can flow into the main distribution channel 41 through the second distribution channel 45. The heat transfer fluid flowing in the third cooling plate 71 can flow into the main distribution channel 41 through the third distribution channel 46. That is to say, the heat transfer fluids of the three cooling plates can be mixed in the main distribution channel 41. As the mixing temperature rises, the thermal spring 48 expands and unfolds due to heat. The thermal spring 48 pushes the distribution valve to move, thereby changing the opening between the main inlet 42 and the main outlet 43, so as to change the coolant flow rate of the main heat dissipation channel.

[0046] In this embodiment, with the above settings, when the laser generating module 22 starts working, the temperature of the heat-conducting liquid in the first cooling plate, the second cooling plate 61, and the third cooling plate 71 is low. The temperature of the heat-conducting liquid in the three cooling plates after mixing in the main distribution channel 41 is also low. Therefore, the thermal spring 48 does not expand and unfold due to heat. At this time, the distribution valve completely seals the main inlet 42 and the main outlet 43, so that the coolant in the main heat dissipation channel cannot flow, resulting in poor overall cooling capacity. At this time, the laser generating module 22 can quickly reach the working temperature.

[0047] During the operation of the laser generating module 22, the temperature of each component continuously rises, causing the temperature of the heat-conducting liquid in the first cooling plate, the second cooling plate 61, and the third cooling plate 71 to gradually increase. The temperature of the heat-conducting liquid in the three cooling plates after mixing in the main distribution channel 41 also gradually increases. The thermal spring 48 expands and unfolds due to heat, and pushes the distribution valve to move, thereby changing the opening between the main inlet 42 and the main outlet 43 to increase the coolant flow rate in the main heat dissipation channel.

[0048] In addition, this embodiment can control the flow rate of the heat transfer fluid from the first cooling plate 61 into the total distribution channel 41, the flow rate of the heat transfer fluid from the second cooling plate 61 into the total distribution channel 41, and the flow rate of the heat transfer fluid from the third cooling plate 71 into the total distribution channel 41 by adjusting the first regulating valve 81, the second regulating valve 82, and the third regulating valve 83, thereby changing the weight of the pump source temperature on the total heat dissipation channel coolant flow rate, the weight of the working medium module 6 temperature on the total heat dissipation channel coolant flow rate, and the weight of the Q switch module 7 temperature on the total heat dissipation channel coolant flow rate. For example, when the pump source is operating at high power, its temperature rises much faster than when it is operating at low power. At this time, the opening of the first regulating valve 81 corresponding to the pump source can be increased. On the one hand, after the first regulating valve 81 is increased, the circulation of the heat transfer fluid in the first cooling plate is accelerated, which can remove more heat. On the other hand, more high-temperature heat transfer fluid from the first cooling plate enters the total distribution channel 41, which will cause the temperature of the mixed heat transfer fluid in the total distribution channel 41 to rise. The increase mainly depends on the amount of high-temperature heat transfer fluid entering the first cooling plate, so that the movement of the distribution valve is mainly controlled by the operating state of the pump source, so as to prevent the output power of the pump source from decreasing due to poor heat dissipation.

[0049] This embodiment describes an eight-axis, six-head linkage laser engraving machine with a cooling circulation structure. The distribution valve includes a blocking part 491, a connecting part 492, and a separating part 493. The connecting part 492 is located between the blocking part 491 and the separating part 493. The blocking part 491, the connecting part 492, and the separating part 493 are all cylindrical structures. The radius of the connecting part 492 is smaller than the radius of the blocking part 491. The radius of the connecting part 492 is smaller than the radius of the separating part 493. The blocking part 491 and the separating part 493 are movably and sealingly disposed in the main distribution channel 41. The blocking part 491 is used to block the main water inlet 42 and the main water outlet 43. The separating part 493 can prevent the mixed heat transfer fluid from entering the main water inlet 42 and the main water outlet 43. The eight-axis, six-head linkage laser engraving machine with a cooling circulation structure described in this embodiment has a thermal spring 48 disposed between the end of the partition 493 away from the connecting part 492 and the main distribution channel 41; a mixing chamber 471 is formed between the end of the partition 493 away from the connecting part 492 and the main distribution channel 41; the first distribution channel 44, the second distribution channel 45 and the third distribution channel 46 are respectively connected to the mixing chamber 471; and the distributor 4 is provided with a mixing outlet 472 connected to the mixing chamber 471.

[0050] Specifically, in the eight-axis six-head linkage laser engraving machine with cooling circulation structure described in this embodiment, when the laser generating module 22 starts working, the temperature of the heat-conducting liquid in the first cooling plate, the second cooling plate 61, and the third cooling plate 71 is low. The temperature of the heat-conducting liquid in the three cooling plates after mixing in the mixing chamber 471 is also low. Therefore, the thermal spring 48 does not expand and unfold due to heat. At this time, the blocking part 491 of the distribution valve completely seals the main inlet 42 and the main outlet 43, so that the coolant in the main heat dissipation channel cannot flow, resulting in poor overall cooling capacity. At this time, the laser generating module 22 can quickly reach the working temperature.

[0051] During the operation of the laser generating module 22, the temperature of each component continuously rises, causing the temperature of the heat-conducting liquid in the first cooling plate, the second cooling plate 61, and the third cooling plate 71 to gradually increase. The temperature of the heat-conducting liquid in the three cooling plates after mixing in the mixing chamber 471 also gradually increases. The thermal spring 48 expands and unfolds due to heat, and pushes the distribution valve to move, causing the blocking part 491 of the distribution valve to gradually open the inlet and the main outlet 43. The connecting part 492 does not block the inlet and the main outlet 43, thereby increasing the coolant flow rate of the total heat dissipation channel.

[0052] In addition, this embodiment can control the flow rate of the heat transfer fluid from the first cooling plate 61 into the mixing chamber 471, the flow rate of the heat transfer fluid from the second cooling plate 61 into the mixing chamber 471, and the flow rate of the heat transfer fluid from the third cooling plate 71 into the mixing chamber 471 by adjusting the first regulating valve 81, the second regulating valve 82, and the third regulating valve 83, thereby changing the weight of the pump source temperature on the total heat dissipation channel coolant flow rate, the weight of the working medium module 6 temperature on the total heat dissipation channel coolant flow rate, and the weight of the Q switch module 7 temperature on the total heat dissipation channel coolant flow rate.

[0053] This embodiment describes an eight-axis, six-head linkage laser engraving machine with a cooling circulation structure. The pump source includes a substrate 51 and a semiconductor chip 52 disposed on the substrate 51. The first cooling plate includes a left cooling plate 53 and a right cooling plate 54. The top of the left cooling plate 53 is connected to a first distribution channel 44. The bottom of the left cooling plate 53 is connected to the bottom of the right cooling plate 54. The top of the outer casing 3 is provided with a first water inlet 55 connected to the top of the right cooling plate 54. The left cooling plate 53 and the right cooling plate 54 respectively abut against the semiconductor chip 52.

[0054] Specifically, the heat transfer fluid enters the top of the right cooling plate 54 from the first inlet 55, passes through the right cooling plate 54 and enters the bottom of the left cooling plate 53, then enters the first inlet channel 56 from the top of the left cooling plate 53, passes through the first adjustment channel 57 and the first distribution channel 44 and enters the mixing chamber 471, and finally exits from the mixing outlet 472. The above arrangement can assist in cooling the semiconductor chip 52 of the substrate 51, and at the same time can transmit the temperature change of the semiconductor chip 52 to the thermal spring 48 in the mixing chamber 471 through the flow of the heat transfer fluid, and finally change the coolant flow rate of the total heat dissipation channel.

[0055] This embodiment describes an eight-axis, six-head linkage laser engraving machine with a cooling circulation structure. The outer casing 3 contains a second conduit 62 and a third conduit 72. The top of the outer casing 3 has a second water inlet 63 and a third water inlet 73. One end of the second conduit 62 is connected to a second distribution channel 45. The other end of the second conduit 62 is connected to the second water inlet 63 after passing through a second cooling plate 61. One end of the third conduit 72 is connected to a third distribution channel 46. The other end of the third conduit 72 is connected to the third water inlet 73 after passing through a third cooling plate 71.

[0056] Specifically, the heat transfer fluid enters the other end of the second conduit 62 from the second inlet 63, then enters the second cooling plate 61, and then enters the second inlet channel 64 from one end of the second conduit 62. After passing through the second adjustment channel 65 and the second distribution channel 45, it enters the mixing chamber 471 and is finally discharged from the mixing outlet 472. The above arrangement can assist in cooling the working medium module 6, and at the same time, the temperature change of the working medium module 6 can be transmitted to the thermal spring 48 in the mixing chamber 471 through the flow of the heat transfer fluid, and finally change the coolant flow rate of the total heat dissipation channel.

[0057] The heat transfer fluid enters the other end of the third conduit 72 from the third inlet 73, then enters the third cooling plate 71, and then enters the third inlet channel 74 from one end of the third conduit 72. After passing through the third regulating channel 75 and the third distribution channel 46, it enters the mixing chamber 471 and is finally discharged from the mixing outlet 472. The above configuration can assist in cooling the Q switch module 7, and at the same time, the temperature change of the Q switch module 7 can be transmitted to the thermal spring 48 in the mixing chamber 471 through the flow of the heat transfer fluid, and finally change the coolant flow rate of the total heat dissipation channel.

[0058] The eight-axis, six-head linkage laser engraving machine with a cooling circulation structure described in this embodiment has a first adjustment channel 57, a second adjustment channel 65, and a third adjustment channel 75 on the top of the distributor 4; the first adjustment valve 81 is movably disposed in the first adjustment channel 57; the second adjustment valve 82 is movably disposed in the second adjustment channel 65; and the third adjustment valve 83 is movably disposed in the third adjustment channel 75.

[0059] The bottom of the distributor 4 is provided with a first inlet channel 56 communicating with the first cooling plate, a second inlet channel 64 communicating with the second cooling plate 61, and a third inlet channel 74 communicating with the third cooling plate 71; the first inlet channel 56 is connected to the bottom of the first adjustment channel 57; the first distribution channel 44 is connected to the side of the first adjustment channel 57; the second inlet channel 64 is connected to the bottom of the second adjustment channel 65; the second distribution channel 45 is connected to the side of the second adjustment channel 65; the third inlet channel 74 is connected to the bottom of the third adjustment channel 75; and the third distribution channel 46 is connected to the side of the third adjustment channel 75.

[0060] The eight-axis, six-head linkage laser engraving machine with a cooling circulation structure described in this embodiment has tapered through holes 87 at the connection points of the first entry channel 56 and the first adjustment channel 57, the second entry channel 64 and the second adjustment channel 65, and the third entry channel 74 and the third adjustment channel 75. The first adjustment valve 81, the second adjustment valve 82, and the third adjustment valve 83 each include a threaded portion 84 and an adjustment portion 85 located at the bottom of the threaded portion 84. The first adjustment channel 57, the second adjustment channel 65, and the third adjustment channel 75 are threadedly connected to the threaded portion 84. Both the threaded portion 84 and the adjustment portion 85 are cylindrical structures. The radius of the adjustment portion 85 is smaller than the radius of the threaded portion 84. The bottom of the adjustment portion 85 has a tapered pin 86 that mates with the tapered through hole 87.

[0061] Specifically, in this embodiment, by rotating the threaded portion 84 of each regulating valve, the depth of the regulating portion 85 of each regulating valve in each regulating channel can be changed, thereby changing the distance between the regulating portion 85 and the tapered through hole 87, thereby adjusting the flow rate of each inlet channel and each regulating channel, so as to change the flow rate of the heat transfer fluid of each cooling plate into the mixing chamber 471.

[0062] This embodiment describes an eight-axis, six-head linkage laser engraving machine with a cooling circulation structure. The main heat dissipation channel includes a first heat dissipation channel 91 and a second heat dissipation channel 92. The pump source is located on one side inside the housing 3. A heat-conducting plate 93 is provided on the other side inside the housing 3. The working medium module 6 and the Q-switch module 7 are both located on the heat-conducting plate 93. The first heat dissipation channel 91 is located between the substrate 51 and the housing 3. The second heat dissipation channel 92 is located between the heat-conducting plate 93 and the housing 3. The top of the first heat dissipation channel 91 is connected to the main water outlet 43. The bottom of the first heat dissipation channel 91 is connected to the bottom of the second heat dissipation channel 92. The top of the housing 3 is provided with a heat dissipation outlet 94 that is connected to the top of the second heat dissipation channel 92.

[0063] Specifically, the coolant enters the main distribution channel 41 from the main inlet 42, then enters the top of the first heat dissipation channel 91 through the main outlet 43, flows from the bottom of the first heat dissipation channel 91 to the bottom of the second heat dissipation channel 92, and finally flows from the top of the second heat dissipation channel 92 to the heat dissipation outlet 94. The above arrangement can effectively cool and dissipate heat from the pump source, the working medium module 6, and the Q switch module 7.

[0064] This embodiment describes an eight-axis, six-head linkage laser engraving machine with a cooling circulation structure. The machine base 1 is equipped with an X-axis linear module 13 for driving the worktable 11 to move along the X-axis. The worktable 11 is equipped with a gantry frame 14; the gantry frame 14 has six lifting seats 15 arranged along the Y-axis; the gantry frame 14 is equipped with a Y-axis linear module 16 for driving the lifting seats 15 to move along the Y-axis; each lifting seat 15 is equipped with a laser unit 12; and each lifting seat 15 is equipped with a Z-axis linear module 17 for driving the laser unit 12 to move vertically.

[0065] Specifically, this embodiment achieves eight-axis directional movement by setting up an X-axis linear module 13, a Y-axis linear module 16, and six Z-axis linear modules 17; in addition, by setting up six laser units 12, the overall work efficiency can be effectively improved.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. An eight-axis, six-head linkage laser engraving machine with a cooling circulation structure, characterized in that: The system includes a base (1); the base (1) is provided with a worktable (11) and a laser unit (12); the laser unit (12) is movably disposed on the top of the worktable (11); the laser unit (12) includes a laser base (21), a laser generating module (22) disposed in the laser base (21) and a lens (23) disposed in the laser base (21); the lens (23) is disposed at the bottom of the laser generating module (22); The laser generating module (22) includes a housing (3) and a distributor (4); the distributor (4) is located on the top of the housing (3); the housing (3) contains a pump source, a working medium module (6) and a Q-switch module (7); the pump source is connected to a first cooling plate; the working medium module (6) is connected to a second cooling plate (61); the Q-switch module (7) is connected to a third cooling plate (71); the housing (3) has a main heat dissipation channel; The distributor (4) is provided with a main distribution channel (41); the distributor (4) is provided with a main water inlet (42) and a main water outlet (43); the main water inlet (42) is connected to the top of the main distribution channel (41); the main water outlet (43) is connected to the bottom of the main distribution channel (41); the main water outlet (43) is connected to the main heat dissipation channel; the distributor (4) is provided with a first distribution channel (44) connected to the first cooling plate, a second distribution channel (45) connected to the second cooling plate (61) and a third cooling plate (71) connected to the third cooling plate (71). The third distribution channel (46); the first distribution channel (44) is provided with a first regulating valve (81); the second distribution channel (45) is provided with a second regulating valve (82); the third distribution channel (46) is provided with a third regulating valve (83); the main distribution channel (41) is provided with a distribution valve along its length; a thermal spring (48) is provided between the distribution valve and the main distribution channel (41); the first distribution channel (44), the second distribution channel (45) and the third distribution channel (46) are respectively connected to the main distribution channel (41).

2. The eight-axis, six-head linkage laser engraving machine with a cooling circulation structure according to claim 1, characterized in that: The distribution valve includes a blocking part (491), a connecting part (492), and a separating part (493); the connecting part (492) is located between the blocking part (491) and the separating part (493); the blocking part (491), the connecting part (492), and the separating part (493) are all cylindrical structures; the radius of the connecting part (492) is smaller than the radius of the blocking part (491); the radius of the connecting part (492) is smaller than the radius of the separating part (493); the blocking part (491) and the separating part (493) are sealed and movable in the main distribution channel (41); the blocking part (491) is used to block the main inlet (42) and the main outlet (43).

3. The eight-axis, six-head linkage laser engraving machine with a cooling circulation structure according to claim 2, characterized in that: The thermal spring (48) is located between the end of the partition (493) away from the connecting part (492) and the main distribution channel (41); a mixing chamber (471) is formed between the end of the partition (493) away from the connecting part (492) and the main distribution channel (41); the first distribution channel (44), the second distribution channel (45) and the third distribution channel (46) are respectively connected to the mixing chamber (471); the distributor (4) is provided with a mixing outlet (472) connected to the mixing chamber (471).

4. The eight-axis, six-head linkage laser engraving machine with a cooling circulation structure according to claim 1, characterized in that: The pump source includes a substrate (51) and a semiconductor chip (52) disposed on the substrate (51); the first cooling plate includes a left cooling plate (53) and a right cooling plate (54); the top of the left cooling plate (53) is connected to the first distribution channel (44); the bottom of the left cooling plate (53) is connected to the bottom of the right cooling plate (54); the top of the housing (3) is provided with a first water inlet (55) connected to the top of the right cooling plate (54); the left cooling plate (53) and the right cooling plate (54) respectively abut against the semiconductor chip (52).

5. The eight-axis, six-head linkage laser engraving machine with a cooling circulation structure according to claim 1, characterized in that: The outer casing (3) is provided with a second conduit (62) and a third conduit (72); the top of the outer casing (3) is provided with a second water inlet (63) and a third water inlet (73); one end of the second conduit (62) is connected to the second distribution channel (45); the other end of the second conduit (62) is connected to the second water inlet (63) after passing through the second cooling plate (61); one end of the third conduit (72) is connected to the third distribution channel (46); the other end of the third conduit (72) is connected to the third water inlet (73) after passing through the third cooling plate (71).

6. The eight-axis, six-head linkage laser engraving machine with a cooling circulation structure according to claim 1, characterized in that: The top of the distributor (4) is provided with a first adjustment channel (57), a second adjustment channel (65) and a third adjustment channel (75); the first adjustment valve (81) is movably disposed in the first adjustment channel (57); the second adjustment valve (82) is movably disposed in the second adjustment channel (65); and the third adjustment valve (83) is movably disposed in the third adjustment channel (75). The bottom of the distributor (4) is provided with a first entry channel (56) communicating with the first cooling plate, a second entry channel (64) communicating with the second cooling plate (61), and a third entry channel (74) communicating with the third cooling plate (71); the first entry channel (56) is connected to the bottom of the first adjustment channel (57); the first distribution channel (44) is connected to the side of the first adjustment channel (57); the second entry channel (64) is connected to the bottom of the second adjustment channel (65); the second distribution channel (45) is connected to the side of the second adjustment channel (65); the third entry channel (74) is connected to the bottom of the third adjustment channel (75); and the third distribution channel (46) is connected to the side of the third adjustment channel (75).

7. The eight-axis, six-head linkage laser engraving machine with a cooling circulation structure according to claim 6, characterized in that: A tapered through hole (87) is provided at the connection between the first entry channel (56) and the first adjustment channel (57), the connection between the second entry channel (64) and the second adjustment channel (65), and the connection between the third entry channel (74) and the third adjustment channel (75); the first adjustment valve (81), the second adjustment valve (82), and the third adjustment valve (83) all include a threaded part (84) and an adjustment part (85) located at the bottom of the threaded part (84); the first adjustment channel (57), the second adjustment channel (65), and the third adjustment channel (75) are respectively threadedly connected to the threaded part (84); the threaded part (84) and the adjustment part (85) are both cylindrical structures; the radius of the adjustment part (85) is smaller than the radius of the threaded part (84); the bottom of the adjustment part (85) is provided with a tapered pin (86) that mates with the tapered through hole (87).

8. The eight-axis, six-head linkage laser engraving machine with a cooling circulation structure according to claim 4, characterized in that: The total heat dissipation channel includes a first heat dissipation channel (91) and a second heat dissipation channel (92); the pump source is located on one side inside the housing (3); a heat-conducting plate (93) is provided on the other side inside the housing (3); the working medium module (6) and the Q switch module (7) are both located on the heat-conducting plate (93); the first heat dissipation channel (91) is located between the substrate (51) and the housing (3); the second heat dissipation channel (92) is located between the heat-conducting plate (93) and the housing (3); The top of the first heat dissipation channel (91) is connected to the main water outlet (43); the bottom of the first heat dissipation channel (91) is connected to the bottom of the second heat dissipation channel (92); the top of the outer shell (3) is provided with a heat dissipation outlet (94) connected to the top of the second heat dissipation channel (92).

9. The eight-axis, six-head linkage laser engraving machine with a cooling circulation structure according to claim 1, characterized in that: The base (1) is provided with an X-axis linear module (13) for driving the worktable (11) to move along the X-axis direction.

10. The eight-axis, six-head linkage laser engraving machine with a cooling circulation structure according to claim 1, characterized in that: The workbench (11) is provided with a gantry frame (14); the gantry frame (14) is provided with six lifting seats (15) arranged along the Y-axis direction; the gantry frame (14) is provided with a Y-axis linear module (16) for driving the lifting seats (15) to move along the Y-axis direction; Each lifting platform (15) is equipped with a laser unit (12); each lifting platform (15) is equipped with a Z-axis linear module (17) for driving the lifting movement of the laser unit (12).

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