Air cooling heat dissipation mechanism and laser welding machine

Abstract

The invention belongs to the technical field of laser welding machines, and provides an air cooling heat dissipation mechanism and a laser welding machine, the air cooling heat dissipation mechanism comprises a first power assembly, a fan assembly and a second power assembly which are sequentially arranged in the air inlet airflow direction, and further comprises a heat exchange cavity formed between the fan assembly and the second power assembly; the heat exchange cavity comprises at least two heat dissipation flow channels extending in different directions, the air inlet airflow direction is basically perpendicular to the air outlet airflow direction of the air outlets of the heat dissipation flow channels, and the air cooling heat dissipation mechanism can achieve heat dissipation of the two power modules at the same time through the same fan assembly. The air cooling heat dissipation mechanism is high in heat dissipation efficiency, the number of heat dissipation modules is reduced, the overall size is compact, meanwhile, the vertical air supply mode shortens the airflow stroke, the problem of temperature concentration is solved, the heat dissipation efficiency is improved, and the welding machine adopting the air cooling heat dissipation mechanism is more stable in light emitting and improves the welding performance.

Description

Technical Field

[0001] The present application relates to the technical field of laser welding machines, and in particular to an air-cooling heat dissipation mechanism and a laser welding machine. Background Art

[0002] A laser welding machine (also known as a laser welder or laser welder) is a type of welding equipment that uses a high-energy laser beam to process materials. It is primarily used in the automotive manufacturing, electronics industry, biomedicine, and mold repair industries. Laser welding machines can be divided into handheld, automatic, and galvanometer types based on their operating mode. Core components include a laser generator, fiber optic transmission system, cooling system, and control system. The handheld design enhances operational flexibility and is suitable for on-site maintenance and small-batch production. Most handheld welding machines use water cooling or air cooling. Water cooling has the problem of a complex water cooling pipeline structure and the need for a water cooler to supply water. As a result, the overall size is large, which is not conducive to the transportation and movement of the welding machine. Using air cooling and an integrated air cooling system can improve portability.

[0003] In existing air-cooled handheld welding machines, the heat source (e.g., a pump source, a circuit board, etc.) is placed on a radiator (e.g., a heat sink fin), and a fan is installed on one side of the radiator. The fan uses suction or blowing to dissipate heat from the radiator, which requires a relatively large radiator and the entire welding machine is relatively large. Secondly, because the cooling airflow generated by the fan blows from one side of the radiator to the other, the airflow path is long, which easily causes the temperature of the radiator to gradually accumulate along the direction of the cooling airflow. The temperature difference between the upstream and downstream of the radiator in the airflow direction is large, resulting in uneven heat dissipation from the heat source and poor heat dissipation efficiency. In addition, the power requirements of current laser welding machines are higher, especially the power requirements for a single pump source. A single pump source generates more heat, making it more difficult for traditional air-cooled heat dissipation methods to meet heat dissipation requirements, further weakening the luminous stability and welding performance of the laser welding machine. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide an air-cooling heat dissipation mechanism and a laser welding machine.

[0005] In the first aspect, an embodiment of the present application provides an air-cooling heat dissipation mechanism, comprising a first power component, a fan component, and a second power component arranged in sequence along the direction of the incoming air flow, the heat generation of the second power component being higher than the heat generation of the first power component, the fan component being used to allow air flow to flow from the outside through the first power component to the second power component to dissipate heat from the first power component and the second power component; and further comprising a heat exchange chamber arranged between the fan component and the second power component, the heat exchange chamber comprising at least two heat dissipation channels extending in different directions, the heat exchange chamber being further used to divert the incoming air flow into different said heat dissipation channels, the said inlet air flow direction being substantially perpendicular to the outlet air flow direction of the outlet of the heat dissipation channel.

[0006] In some embodiments, an air guide and at least two groups of heat sink fins are provided in the heat exchange chamber, the heat sink fins are close to the second power component, and at least two groups of air collecting plates are provided on the side of the air guide facing the heat sink fins. The end of each group of air collecting plates extends to the root of the corresponding group of heat sink fins, and an air guide gap is provided at the end; each heat dissipation channel includes a group of heat sink fins and a corresponding group of air collecting plates, and the air guide gap is connected to the air outlet.

[0007] In some embodiments, a hollow first air inlet area is provided in the middle area of ​​the side surface perpendicular to the direction of the air inlet airflow of the first power component, and a second air inlet area is provided in the edge area of ​​the side surface perpendicular to the direction of the air inlet airflow of the first power component; the air intake volume of the second air inlet area is not less than the air intake volume of the first air inlet area.

[0008] In some embodiments, further, the ratio of the air intake volume of the first air intake area to the air intake volume of the second air intake area is in the range of [2 / 5, 2 / 3]. Further, in some embodiments, the ratio of the air intake volume of the first air intake area to the air intake volume of the second air intake area is 1:2.

[0009] In some embodiments, the air collecting plate is provided with a plurality of small holes and / or the heat dissipation fins are provided with a plurality of small holes.

[0010] In some embodiments, the fan assembly includes at least one fan, the blowing direction of the fan is basically perpendicular to the heat dissipation surface of the second power component facing the fan assembly; the angle between the blowing direction of the fan and the heat dissipation surface is 90°±5°.

[0011] In some embodiments, the fan assembly includes multiple fans, which are divided into at least two groups, with each group of fans aligned with a heat dissipation channel, or the fans are divided into multiple groups evenly arranged to blow towards each heat dissipation channel.

[0012] In some embodiments, the heat exchange chamber includes two heat dissipation channels extending in opposite directions, and the heat dissipation airflow passing through the fan assembly flows to the second power component and flows out from both sides of the second power component through the two heat dissipation channels; an air guide and two groups of heat dissipation fins are provided in the heat exchange chamber, and the heat dissipation fins are close to the second power component, and the air guide includes a frame, and two air guide inlets are provided on the frame, and each air guide inlet is provided with an air gathering plate on the side facing the second power component, and the end of the air gathering plate extends to the root of the corresponding group of heat dissipation fins, and an air guide gap is provided at the end; each heat dissipation channel includes a group of heat dissipation fins, a corresponding air guide inlet and a corresponding group of air gathering plates; the air guide gap is connected to the air outlet.

[0013] In some embodiments, the fan assembly includes multiple fans, which are divided into two groups, each group of fans is aligned with the corresponding air guide inlet of a heat dissipation channel, or the fans are divided into three evenly arranged groups, and a group of fans is set on the air guide inlet corresponding to each heat dissipation channel, and the middle group of fans at least partially blows towards the connecting reinforcement ribs between the two air guide inlets.

[0014] In some embodiments, the air-cooled heat dissipation mechanism also includes a third power component and a heat sink. The heat generated by the third power component is less than the heat generated by the first power component and the second power component. The heat sink is used to cool the third power component. The heat sink is located in the downstream area of ​​the heat dissipation channel.

[0015] In some embodiments, a temperature sensor is provided in each of the first power component, the second power component, and the third power component.

[0016] In the second aspect, an embodiment of the present application provides a laser welding machine, including the air-cooled heat dissipation mechanism described in any of the above embodiments, wherein the first power component is a fiber optic disk component and the second power component is a pump source component; it also includes a main control unit and a heat sink arranged on the main control unit, the heat sink is used to cool the main control unit, and the heat sink is located in the downstream area of ​​the heat dissipation channel.

[0017] On the third aspect, an embodiment of the present application also provides a laser welding machine, including a chassis, the chassis including a front panel, a rear panel, a top panel, a bottom panel, a left panel and a right panel, an isolation mounting plate is provided in the chassis to divide the interior of the chassis into a first mounting space on the left and a second mounting space on the right; an air-cooling heat dissipation mechanism according to any of the above embodiments is provided in the first mounting space, wherein the first power component is a fiber optic disk component, the second power component is a pump source component, a first air inlet is provided on the left panel, the fiber optic disk component is close to the first air inlet, the pump source component is provided on the isolation mounting plate, the air outlet of the heat dissipation channel is respectively facing the front panel and the rear panel, and air outlet meshes are provided on the front panel and the rear panel; an electrical unit is provided in the second mounting space, an auxiliary air inlet is provided on the right panel, the electrical unit includes a cooling fan assembly, and auxiliary air outlet meshes are provided on the front panel and / or the rear panel.

[0018] In some embodiments, the electrical unit also includes a main control unit and a heat sink arranged on the main control unit, the heat sink is used to cool the main control unit, an installation area is set on the isolation mounting plate corresponding to the downstream of the heat dissipation channel, the main control unit is embedded in the installation area, and the heat sink is located in the heat dissipation channel.

[0019] The beneficial effects that this application can achieve.

[0020] This application provides an air-cooled heat dissipation mechanism and laser welding machine, in which a fan assembly is arranged between two power modules with different heat outputs, with the inlet and outlet airflow directions being substantially perpendicular. The split inlet airflow flows out laterally along heat dissipation channels in different directions. This air-cooled heat dissipation mechanism utilizes a single fan assembly to simultaneously dissipate heat from two power modules (e.g., a fiber optic disk module and a pump source module), achieving high heat dissipation efficiency while reducing the number of heat dissipation modules and making the overall size compact. Furthermore, the vertical air supply shortens the airflow path, eliminating the problem of temperature concentration and improving heat dissipation efficiency. A welding machine employing this air-cooled heat dissipation mechanism achieves more stable light emission and improved welding performance.

[0021] In addition, a laser welding machine provided in an embodiment of the present application distributes the optical module (fiber optic disc assembly and pump source assembly) and the electrical module in two cavities of the chassis (i.e., the first installation space and the second installation space), dissipating heat separately and improving heat dissipation efficiency. Furthermore, the air-cooling heat dissipation mechanism of the optical module can simultaneously cool the fiber optic disc assembly, the pump source assembly, and the main control unit along the flow path of the cooling airflow, taking into account the heat generation, heat resistance, and heat dissipation requirements of each module. The same cooling fan assembly can dissipate heat for multiple major heat-generating modules, achieving high heat dissipation efficiency, reducing the number of components, and achieving a compact structure. A heat dissipation channel comprising an auxiliary air inlet, a cooling fan assembly, and auxiliary air outlet mesh is provided in the second installation space where the electrical module is located to dissipate heat for the electrical unit. This also reduces the thermal impact of heat generated by the optical module on the electrical unit, making the entire welding machine more stable.

[0022] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 The three-dimensional diagram of the air cooling heat dissipation mechanism in the embodiment of the present application is shown. Figure 1 ; Figure 2 The three-dimensional diagram of the air cooling heat dissipation mechanism in the embodiment of the present application is shown. Figure 2 ; Figure 3 Shows this application Figure 2 Schematic diagram of the cross section along the AA direction; Figure 4 Shows this application Figure 2 Schematic diagram of the cross section along the BB direction; Figure 5 An exploded view of the air-cooling heat dissipation mechanism in an embodiment of the present application is shown; Figure 6 An exploded view of a fiber optic tray assembly in an embodiment of the present application is shown; Figure 7 A schematic diagram of the installation structure of the pump source assembly and the heat sink fins in an embodiment of the present application is shown; Figure 8 A schematic structural diagram of an air guide plate in an embodiment of the present application is shown; Figure 9 An arrangement of the fan assembly in an embodiment of the present application is shown; Figure 10 Another arrangement of the fan assembly in the embodiment of the present application is shown; Figure 11 A schematic diagram showing the installation positions of the third power component and the heat sink in an embodiment of the present application is shown; Figure 12 A three-dimensional diagram of a laser welding machine in an embodiment of the present application is shown; Figure 13 An exploded view of a laser welding machine according to an embodiment of the present application is shown; Figure 14 A schematic diagram of the installation positions of the main control unit and heat sink of the laser welding machine in an embodiment of the present application is shown.

[0025] Among them, 100-air cooling mechanism, a-air inlet direction, 1-first power component, 1a-fiber disk component, 2-fan component, 3-second power component, 3a-pump source component, 4-heat exchange chamber, 5-heat dissipation channel, 6-air outlet, b-air outlet direction, 7-air guide, 8-heat dissipation fins, 9-air collecting plate, 10-air guide gap, 11-first air inlet area, 12-second air inlet area, 13-frame, 14-air guide inlet, 15-connection reinforcement rib, 200-laser welding machine, 16-chassis, 17-front panel, 18-rear panel, 19-top panel, 20-bottom panel, 21-left panel, 22-right panel, 23-isolation mounting plate, 24-first installation space, 25-second installation space, 26-first air inlet vent, 27-electrical unit, 28-cooling fan assembly, 29-main control unit, 30-auxiliary air inlet, 31-auxiliary air outlet mesh, 32-air outlet mesh, 33-installation area, 34-heat sink, 35-bracket, 36-connection base, 37-pump source support vertical plate, 38-upper wind shield, 39-lower wind shield, 40-front support vertical plate, 41-rear support vertical plate, 42-fiber optic disc fixing plate, 43-cover plate, 44-hollow heat dissipation bottom plate, 45-optical fiber, 46-heat dissipation fins, 47-optical fiber access end, 48-second air inlet, 49-optical fiber slot, 50-hollow area, 51-cladding light stripper, 52-optical fiber disc installation slot, 53-third air inlet, 54-third power component, 56-laser controller, 57-main power supply. DETAILED DESCRIPTION

[0026] The term "comprising" in the specification, claims, and drawings of this application is synonymous with "including," "containing," or "characterized by," and is inclusive or open-ended and does not exclude additional unrecited elements or method steps. "Comprising" is a technical term used in claim language to mean that the recited elements are present, but other elements may be added and still form a structure or method within the scope of the claim.

[0027] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. In addition, the terms "first," "second," "third," etc. are used only to distinguish descriptions and are not to be understood as indicating or implying relative importance. The term "about" in this application is intended to include slight variations (up to + / - 10%) from the stated value.

[0028] The present application has found that the existing air-cooled handheld welding machine has problems such as a large heat dissipation mechanism, easy heat concentration in the radiator, uneven heat dissipation, poor heat dissipation efficiency, and is difficult to adapt to a higher power pump source.

[0029] To address the above-mentioned technical problems, one embodiment of the present application provides an air-cooling heat dissipation mechanism, comprising a first power component, a fan component, and a second power component, arranged sequentially along an inlet airflow direction. The second power component generates a higher heat than the first power component. The fan component is configured to direct airflow from the outside through the first power component to the second power component to dissipate heat from the first and second power components. The mechanism also includes a heat exchange chamber disposed between the fan component and the second power component, the heat exchange chamber comprising at least two heat dissipation channels extending in different directions. The heat exchange chamber is further configured to divert the inlet airflow into different heat dissipation channels, with the inlet airflow direction being substantially perpendicular to the outlet airflow direction of the heat dissipation channels. The air-cooling heat dissipation mechanism of this embodiment utilizes a single fan assembly to simultaneously dissipate heat from two power modules (e.g., a fiber optic disk module and a pump source module), resulting in high heat dissipation efficiency and a reduced number of heat dissipation modules, making the overall volume compact. Furthermore, the vertical air supply method shortens the airflow path, resolves the problem of temperature concentration, and improves heat dissipation efficiency.

[0030] In another embodiment of the present application, a laser welding machine is provided, including a chassis, the chassis including a front panel, a rear panel, a top panel, a bottom panel, a left panel and a right panel, an isolation mounting plate is provided in the chassis to divide the interior of the chassis into a first mounting space on the left and a second mounting space on the right; an air-cooling heat dissipation mechanism according to any of the above embodiments is provided in the first mounting space, wherein the first power component is a fiber optic disk component, the second power component is a pump source component, a first air inlet is provided on the left panel, the fiber optic disk component is close to the first air inlet, the pump source component is provided on the isolation mounting plate, the air outlet of the heat dissipation channel is respectively directed toward the front panel and the rear panel, and air outlet meshes are provided on the front panel and the rear panel; an electrical unit is provided in the second mounting space, an auxiliary air inlet is provided on the right panel, the electrical unit includes a cooling fan component, and auxiliary air outlet meshes are provided on the front panel and / or the rear panel. The laser welding machine in this embodiment distributes the optical module and the electrical unit in two cavities of the chassis, dissipates heat separately, and designs heat dissipation channels to reduce heat concentration and improve heat dissipation efficiency. The cover plates of the chassis on both sides can be opened separately, which facilitates the maintenance of the optical module and the electrical unit, and is also conducive to reducing the size of the welding machine.

[0031] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0032] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0033] Conventional air-cooled handheld welding machines utilize a separate heat sink structure (e.g., heat sink fins) and place the heat source (e.g., a pump source, circuit board, etc.) on the heat sink. A fan is positioned on one side of the heat sink, dissipating heat from the heat sink by suction or blowing air. This application has discovered the following problems with the air-cooled heat dissipation mechanism of conventional air-cooled handheld welding machines: ① First, the heat sink occupies a relatively large volume, resulting in a relatively large overall heat dissipation mechanism. ② Second, because the cooling airflow generated by the fan blows from one side of the heat sink to the other, the airflow path is relatively long. As the airflow gradually removes heat from the heat sink, the temperature on the heat sink gradually concentrates, resulting in a significant temperature difference between the upstream and downstream sides of the heat sink. This means that heat is concentrated on the side of the heat sink farther from the fan (fan blowing mode) or closer to the fan (fan suction mode), resulting in uneven heat dissipation from the heat module and poor heat dissipation efficiency. Furthermore, current laser welding machines require higher power, especially for a single pump source, which generates more heat. Conventional air-cooled heat dissipation methods are even more difficult to meet these requirements, further impairing the laser welding machine's luminous stability and welding performance.

[0034] In view of this, the present application provides a laser welding machine, which adopts an improved air-cooling heat dissipation mechanism, taking into account the differences in heat generation and heat dissipation requirements of the optical fiber disk assembly and the pump source assembly. The same set of fan modules can be used to simultaneously dissipate heat for the optical fiber disk assembly and the pump source assembly. The heat dissipation efficiency is high and the number of heat dissipation modules is saved, making the overall volume compact. At the same time, the vertical air supply method shortens the airflow path, solves the problem of temperature concentration, and improves the heat dissipation efficiency, thereby making the welding machine's light emission more stable and improving the welding performance.

[0035] In the embodiment of the present application, an air cooling heat dissipation mechanism 100 is provided. Figure 1 and Figure 2As shown in FIG, an air-cooling heat dissipation mechanism 100 includes a first power component 1, a fan component 2, and a second power component 3, which are arranged in sequence along the incoming air flow direction a. The second power component 3 generates more heat than the first power component 1. The fan component 2 is used to direct airflow from the outside through the first power component 1 to the second power component 3 to dissipate heat from the first and second power components 1 and 3. As the air flows from upstream to downstream, the temperature gradually increases. Therefore, it is necessary to reasonably position the respective modules based on their heat generation, heat resistance, and heat dissipation requirements, thereby forming an overall heat dissipation structure and flow direction that meets the heat dissipation requirements of each module. In the air-cooling heat dissipation mechanism 100 of the present application, the fan component 2 is arranged between the two power components. The fan component 2 dissipates heat from the first power component 1 and the second power component 3 simultaneously. The air first passes through the first power component 1 and then blows vertically toward the second power component 3. The first power component 1 has low power and generates less heat. Although the temperature of the incoming air flow increases, it can still effectively dissipate heat from the second power component 3. The two power components share a set of heat dissipation fan components, reducing the number of components and the volume of the entire air-cooling heat dissipation mechanism.

[0036] See also Figure 3 and Figure 4 As shown in FIG, the air-cooling heat dissipation mechanism 100 of the present application includes a heat exchange chamber 4 disposed between the fan assembly 2 and the second power assembly 3. The heat exchange chamber 4 includes at least two heat dissipation channels 5 extending in different directions. The heat exchange chamber 4 is configured to divert incoming airflow into different heat dissipation channels 5. The incoming airflow direction a is substantially perpendicular to the outgoing airflow direction b of the air outlet 6 of the heat dissipation channel 5. In the present application, the air flow axis of the fan assembly 2 supplies air vertically toward the heat dissipation surface of the second power assembly 3 (for example, the pump source assembly). After the heat dissipation airflow flowing through the fan assembly 2 flows to the second power assembly 3 (for example, the pump source assembly), the airflow entering the heat exchange chamber 4 is separated and enters different heat dissipation channels 5, and then flows out from the air outlet 6 of the heat dissipation channel 5. The cooling airflow directly blows the second power assembly 3 (for example, the pump source assembly) with high and concentrated heat generation, and then flows out in a different direction that is basically perpendicular to the air inlet airflow direction a. The airflow path is short, so that the second power assembly 3 (for example, the pump source assembly) will not produce temperature concentration, eliminates the temperature difference on different sides, improves the heat dissipation efficiency of the second power assembly 3 (for example, the pump source assembly), makes the welding machine light emission more stable, and improves the welding performance.

[0037] In some embodiments of the present application, the fan in the fan assembly 2 is an axial flow fan. The axial flow fan has a compact structure, can save a lot of space, and is easy to install.

[0038] In the embodiments of the present application, generally, the higher the heat generation of a power component, the higher the heat dissipation requirement of that power component. By first passing the cooling airflow through modules with low heat dissipation requirements (low heat generation) and then through modules with high heat dissipation requirements (high heat generation), the cooling airflow can be prevented from being overheated by the modules with high heat generation, thereby failing to cool the modules with low heat generation. For example, if the heat generation of the pump source assembly in a laser welding machine is higher than that of the fiber optic disc assembly, the heat dissipation requirement of the pump source assembly is higher than that of the fiber optic disc assembly. When designing the cooling airflow direction, consider directing the incoming airflow through the fiber optic disc assembly (low heat generation) first, and then through the pump source assembly (high heat generation).

[0039] In some embodiments of the present application, an air-cooled heat dissipation mechanism 100 is used in a laser welding machine to dissipate heat from an optical module. The first power component 1 is a fiber optic tray assembly with a power of approximately 400-500W, and the second power component 3 is a pump source assembly with a power of approximately 800W. A fan assembly 2 is positioned between the fiber optic tray assembly and the pump source assembly, which are located upstream and downstream of the heat dissipation airflow, respectively. The fiber optic tray assembly generates much less heat than the pump source assembly (approximately 400-500W, primarily in the fiber optic slots 220-300W). The remaining components of the fiber optic tray are relatively dispersed and packaged. Considering the overall structural layout, the fan assembly is positioned upstream. The pump source assembly generates high and concentrated heat, requiring high heat dissipation requirements, so it is positioned downstream. This allows the heat dissipation airflow to dissipate heat from the fiber optic tray assembly first, minimizing the significant temperature increase of the airflow passing through the fiber optic tray assembly while still providing sufficient heat dissipation to the pump source assembly, which generates more heat. The fan assembly 2 in the present application is arranged between the fiber optic disk assembly 1a and the pump source assembly 3a. This solution takes into account the difference in heat generation and heat dissipation requirements of modules such as the fiber optic disk module and the pump source module. The same set of fan modules can be used to simultaneously dissipate heat for the fiber optic disk module and the pump source module. The heat dissipation efficiency is high and the number of heat dissipation modules is saved, making the volume compact.

[0040] In summary, the present application provides an air-cooled heat dissipation mechanism 100, in which the fan assembly 2 is arranged between two power modules with different heat generation, and the air inlet airflow direction and the air outlet airflow direction are basically perpendicular (for example, the angle between the two directions is 90°±10°), and the diverted air flow flows out from the side along heat dissipation channels in different directions. The present air-cooled heat dissipation mechanism 100 can simultaneously achieve heat dissipation for two power modules (for example, a fiber disk module and a pump source module) using the same fan assembly, with high heat dissipation efficiency and saving the number of heat dissipation modules, making the overall volume compact. At the same time, the vertical air supply method shortens the airflow path, solves the problem of temperature concentration, and improves heat dissipation efficiency.

[0041] See also Figure 5As shown in , an embodiment of the present application provides an air-cooling heat dissipation mechanism for a laser welding machine, which adopts the air-cooling heat dissipation mechanism 100 in any of the above embodiments, including a connecting base 36, a pump source support vertical plate 37, a pump source assembly 3a, a fan assembly 2, an air guide 7, an upper wind shield plate 38, a lower wind shield plate 39, a front support vertical plate 40, a rear support vertical plate 41, a fiber optic disk assembly 1a, and a fiber optic disk fixing plate 42.

[0042] See also Figure 6 As shown in the figure, the fiber tray assembly 1a includes a cover plate 43, a hollow heat dissipation base plate 44, an optical fiber 45, a heat dissipation fin 46, an optical fiber access end 47, and a cladding light stripper 51. A fiber trough 49 is provided on the hollow heat dissipation base plate 44 to accommodate the optical fiber 45. The fiber trough 49 is in the shape of an O-shaped runway or an 8-shaped runway. The optical fiber 45 is coiled in the fiber trough 49. The cover plate 43 is disposed above the hollow heat dissipation base plate 44, covering the fiber trough 49. A plurality of second air inlets 48 are provided on the cover plate 43. A hollow area 50 is provided in the center of the fiber trough 49. The positions of the second air inlets 48 correspond to the positions of the hollow area 50 in the upper and lower directions. The cooling airflow entering from the second air inlets 48 flows substantially parallel to the hollow area 50. A cladding light stripper 51 is provided in the hollow area 50. The cladding light stripper 51 is used to strip the residual pump light and reflected light in the cladding and is a conventional device. The cladding light stripper 51 is provided with heat dissipation fins 46, which dissipate heat from the cladding light stripper 51, so that the cladding light stripper 51 can work stably for a long time. The side of the hollow heat dissipation base plate 44 facing away from the cover plate 43 is provided with an optical fiber access port 47 for accessing optical fibers.

[0043] See also Figure 7 Figure 1 shows a schematic diagram of the installation structure of the pump source assembly 3a and heat sink fins 8. The pump source assembly 3a is the core excitation device that achieves population inversion in the laser. It uses light energy to cause the activated particles to transition to a high-energy state and is a conventional device. The heat sink fins 8 are fixedly mounted on the heat dissipation surface of the pump source assembly 3a, facing the fan assembly 2.

[0044] The pump source assembly 3a is secured to the connection base 36 via the pump source support plate 37. The connection base 36 is provided with mounting holes to secure (e.g., with bolts) the entire air-cooling heat dissipation mechanism 100 within the installation space within the laser welding machine. The fiber tray assembly 1a, fan assembly 2, and pump source assembly 3a are sequentially arranged along the inlet airflow direction a. The fan assembly 2 directs airflow from the outside through the fiber tray assembly 1a to the pump source assembly 3a, thereby simultaneously dissipating heat from both the fiber tray assembly 1a and the pump source assembly 3a. A heat exchange chamber 4 is formed between the fan assembly 2 and the pump source assembly 3a. The heat exchange chamber 4 includes at least two heat dissipation channels 5 extending in different directions. The heat exchange chamber 4 also diverts the inlet airflow into different heat dissipation channels 5. The inlet airflow direction a is substantially perpendicular to the outlet airflow direction b of the air outlet 6 of the heat dissipation channel 5. In this embodiment, the substantially vertical angle between the two directions does not necessarily have to be 90°, and there may be a certain deviation, for example, the angle between the two directions is 90°±10°.

[0045] In this embodiment, see Figure 5 As shown in FIG, the heat exchange chamber 4 includes two heat dissipation channels 5 extending in opposite directions. The heat dissipating airflow from the fan assembly 2 flows toward the pump source assembly 3a (second power assembly 3) and then exits from both sides of the pump source assembly 3a through the two heat dissipation channels 5. In this embodiment, the airflow is directed directly toward the pump source module, where heat is concentrated and high, before exiting from both sides. This shortens the airflow path, prevents temperature concentration in the pump source module, and avoids large temperature differences between different sides. This improves the heat dissipation efficiency of the pump source module, resulting in more stable light emission from the welding machine and enhanced welding performance.

[0046] In some other embodiments of the present application, the heat dissipation channel 5 can also be set to more than 3 according to the setting position, number and direction of the heat dissipation fins 8 and the heat dissipation needs of the pump source component 3a, such as 3, 4, 5, 6, 7, 8, etc. At this time, at least two of the heat dissipation channels 5 extend in different directions, and the extension direction of the heat dissipation channel 5 can be set to 2, 3, 4, 5, 6, 7, 8, etc. according to needs, all of which can shorten the airflow distance, and will not be described in detail one by one here.

[0047] In this embodiment, the heat exchange chamber 4 includes a cavity enclosed by an air guide 7, an upper air shield 38, a lower air shield 39, a front support plate 40, and a rear support plate 41. The heat exchange chamber 4 is provided with an air guide 7 and at least two groups of heat dissipation fins 8, and the heat dissipation fins 8 are closely attached to the pump source component 3a (the second power component 3). The air guide 7 is provided with at least two groups of air gathering plates 9 on the side facing the heat dissipation fins 8. The air gathering plates 9 are inclined toward the bottom of the corresponding group of heat dissipation fins 8. The end of each group of air gathering plates 9 extends to the root of the corresponding group of heat dissipation fins 8, and an air guide notch 10 is provided at the end. Figure 5 and Figure 8 A schematic diagram of the structure of the central air guide 7 shows the air guide 7 comprising a frame 13 with at least two air inlets 14 disposed thereon. Each air inlet 14 is provided with an air collecting plate 9 on the side facing the pump source assembly 3a (second power assembly 3). The air collecting plates 9 extend from the frame 13 to the root of the corresponding set of heat sink fins 8, gradually sloping toward the heat sink fins 8. The distal end of the air collecting plate 9 extends to the root of the corresponding set of heat sink fins 8, and an air guide notch 10 is disposed at the distal end. In other words, the air collecting plates 9 in each set of air collecting plates 9 converge toward the distal end, and the cross-sectional area of ​​the cooling air passage formed by the air collecting plates 9 gradually decreases toward the distal end. Each heat dissipation channel 5 comprises a set of heat sink fins 8 and a corresponding set of air collecting plates 9. The air guide notch 10 connects to the air outlet 6. In this embodiment, the vertical air supply mode facing the pump source component 3a can effectively shorten the airflow path and solve the problem of temperature concentration, and the provision of an air collecting plate structure has the following technical effects: First, because the roots of the heat dissipation fins are in direct contact with the heat sink or mounting structure of the chip, the heat is higher than the top of the fins, and thus the air collecting plate structure can effectively guide the airflow passing through the fan component 2 to the roots of the heat dissipation fins, thereby improving the heat dissipation efficiency; second, the air collecting plate structure can block the airflow and separate it into two or more paths, thereby solving the vortex generated when the vertical air supply encounters the pump source module, solving the problem of airflow spinning and reduced heat dissipation utilization, reducing wind noise, and improving heat dissipation efficiency; third, the air collecting plate structure has an airflow convergence effect due to the guiding structure inclined at a certain angle toward the bottom of the fin, and the pump source module dissipates heat in a concentrated manner and generates a large amount of heat, and the converged airflow can directly reach the root of the fin, thereby improving the heat dissipation efficiency.

[0048] like Figure 5In the embodiment shown in FIG, two sets of heat dissipation fins 8 are provided, two air guide inlets 14 are provided on the corresponding frame 13, and air outlets 6 are provided on the front support vertical plate 40 and the rear support vertical plate 41. Each heat dissipation channel 5 includes a set of heat dissipation fins 8, a corresponding air guide inlet 14, and a corresponding set of air collecting plates 9, and the air guide notch 10 is connected to the air outlet 6. In other embodiments, the number of sets of heat dissipation fins 8, the number of air guide inlets 14, and the number of sets of air collecting plates 9 can be set to more than three as needed, for example, 3, 4, 5, 6, 7, 8, etc., all of which can achieve the above-mentioned technical effects and will not be described in detail here.

[0049] In some embodiments of the present application, a plurality of small holes are provided on the air collecting plate 9 so that the airflows on both sides separated by the air collecting plate structure are connected, thereby making the temperature of the heat dissipating fins more uniform and further reducing the temperature difference.

[0050] In some embodiments of the present application, a plurality of small holes are provided on the heat dissipation fins 8, the purpose of which is to create microchannels between the heat dissipation fins 8 so that the airflow between the fins is connected, thereby increasing the flow rate in the local area of ​​the fins and accelerating heat exchange.

[0051] In the embodiments of the present application, considering that the heat dissipation airflow first passes through the fiber optic disc assembly 1a and then dissipates heat to the pump source assembly 3a, although the airflow flowing through the fiber optic disc assembly is heated, the temperature rise of the airflow flowing through the fiber optic disc assembly is not much, so the heat dissipation of the pump source module can be achieved at the same time. In order to further optimize the heat dissipation performance, some embodiments of the present application also optimize the air inlet position at the air inlet of the fiber optic disc assembly 1a located upstream of the airflow. For details, see Figure 2 and Figure 5As shown in , in some embodiments, the fiber optic disc assembly 1a (first power component 1) is provided with a hollowed-out first air inlet area 11 in the middle area along the side perpendicular to the air inlet direction a, and the fiber optic disc assembly 1a (first power component 1) is provided with a second air inlet area 12 in the edge area along the side perpendicular to the air inlet direction a. The air intake volume of the second air inlet area 12 is not less than the air intake volume of the first air inlet area 11. This design divides the air intake channel of the fiber optic disc assembly 1a into two parts: the first air inlet area 11 at the hollowed-out area 50 and the second air inlet area 12 at the edge area of ​​the side. First, the simultaneous provision of the air intake channel in two parts increases the air intake volume and improves the heat dissipation effect. Second, the airflow directly passes through the hollowed-out area 50 to dissipate heat from the fiber optic disc assembly, resulting in a short airflow path, high heat dissipation efficiency, and little increase in the temperature of the airflow in this part. Again, the air entering the second air inlet area 12 of the side edge area is mainly used to dissipate heat for the pump source assembly 3a on the downstream side. Since the airflow in the hollow area 50 mainly takes away the heat of the optical fiber disk assembly 1a, the airflow in the second air inlet area 12 of the side edge area is cold air. Even after mixing with the hot air flow whose temperature does not rise much after passing through the hollow area 50, the overall temperature of the mixed air flow is reduced, thereby improving the heat dissipation efficiency of the downstream pump source module.

[0052] Furthermore, in some embodiments, to balance heat dissipation of the optical fiber tray and minimizing the temperature of the airflow passing through the optical fiber tray, the ratio of the airflow of the first air inlet area 11 at the hollow region 50 to the airflow of the second air inlet area 12 at the side edge region is in the range of [2 / 5, 2 / 3]. For example, in some embodiments, the ratio of the airflow of the first air inlet area 11 to the airflow of the second air inlet area 12 is 2:3. After 40% of the total airflow is absorbed from the optical fiber tray assembly 1a by passing through the middle region and the hollow region 50 of the optical fiber tray cover plate 43, the cooling air, which accounts for 60% of the total airflow, directly enters through the side air inlet between the optical fiber tray assembly 1a and the optical fiber tray fixing plate 42, and is cooled, the cooling air is then blown toward the pump source assembly 3a through the fan assembly 2 to dissipate heat from the pump source assembly 3a. For example, in some embodiments, the ratio of the air intake volume of the first air inlet area 11 at the hollow area 50 to the air intake volume of the second air inlet area 12 at the side edge area is 2:5. The cooling air volume, which accounts for 2 / 7 of the total air intake volume, absorbs the heat of the optical fiber disk assembly 1a through the middle area of ​​the cover plate 43 of the optical fiber disk and the hollow area 50, and the cooling air volume, which accounts for 5 / 7 of the total air intake volume, directly enters from the side air inlet between the optical fiber disk assembly 1a and the optical fiber disk fixing plate 42, and then merges and cools down, and then blows to the pump source assembly 3a through the fan assembly 2 to dissipate heat from the pump source assembly 3a. For another example, in some embodiments, the air intake volume of the first air intake area 11 and the air intake volume of the second air intake area 12 account for one-third and two-thirds of the total air intake volume respectively. One-third of the wind is heated through the cover plate 43 and the hollow area 50 of the optical fiber disk, and two-thirds of the wind is introduced through the side air inlet between the optical fiber disk assembly 1a and the optical fiber disk fixing plate 42. Therefore, this part of the wind is cool wind, which can effectively dissipate the heat of the pump source assembly 3a while taking into account the heat dissipation of the optical fiber disk assembly 1a. The two share a set of cooling fans to reduce the number of components and volume.

[0053] like Figure 5As shown in FIG, in this embodiment, the fiber tray assembly 1a is fixed to the fiber tray fixing plate 42. A fiber tray mounting slot 52 is defined on the side of the fiber tray fixing plate 42 facing the fiber tray assembly 1a. The fiber tray assembly 1a is fixed in the fiber tray mounting slot 52, and an air inlet gap is defined between the edge of the fiber tray assembly 1a and the wall of the fiber tray mounting slot 52. A plurality of third air inlets 53 are hollowed out at the bottom of the fiber tray mounting slot 52. These third air inlets 53 are used to securely mount the fans in the fan assembly 2. The air inlet of the fiber tray assembly 1a comprises two parts: first, a second air inlet 48 and a hollow area 50 in the middle of the fiber tray assembly 1a. Cooling air can sequentially pass through the second air inlet 48 and the hollow area 50, thereby dissipating heat from the fiber tray. Furthermore, an air inlet gap, i.e., a second air inlet area, is defined between the side edge of the fiber tray assembly 1a and the wall of the fiber tray mounting slot 52. Specifically, in some embodiments, one, two, three or four side edges of the optical fiber tray assembly 1a may be provided with a second air inlet area. Figure 5 In this embodiment, second air inlet areas 12 are provided at the front and rear edges of the sides of the fiber tray assembly 1a perpendicular to the airflow direction a. The upper and lower edges are used to secure the fiber tray assembly 1a. Other examples of air inlet area configurations are not described here.

[0054] In this application, the fan assembly 2 includes at least one fan, the fan's blowing direction being substantially perpendicular to the heat dissipation surface of the pump source assembly 3a (second power assembly 3) facing the fan assembly 2. Substantially perpendicular in this application means that the angle between the fan's blowing direction and the heat dissipation surface is 90°±5°. In this embodiment of the present application, for vertical air delivery facing the pump source assembly 3a, the fan's blowing angle can be 90±5°. Mounting the fan slightly tilted facilitates directing air toward the pump source, resulting in more concentrated airflow and improved heat dissipation. However, excessive tilting would increase the overall size of the module, making it difficult to achieve both compactness and heat dissipation. Therefore, this angle range achieves a balance between heat dissipation and compactness.

[0055] In some embodiments of the present application, the fan assembly 2 includes multiple fans, which are divided into at least two groups, each group of fans is aligned with a heat dissipation channel 5, or the fans are divided into multiple groups arranged evenly, blowing towards each heat dissipation channel 5.

[0056] For example, in some embodiments, Figure 9As shown in FIG, the fan assembly 2 includes multiple fans, which are divided into two groups, with each group of fans aligned with the corresponding air inlet 14 of a heat dissipation channel 5. In this way, the two groups of fans are completely aligned with the air inlet 14 on the air guide plate 7 without any obstruction, which increases the air flow. Although the overall volume is slightly larger, it is still more compact than traditional heat dissipation structures.

[0057] For example, in other embodiments, Figure 10 As shown in , the fans are divided into three evenly arranged groups. One group of fans is located at the air inlet 14 corresponding to each heat dissipation channel 5, and the middle group of fans blows at least partially toward the connecting reinforcement rib 15 between the two air inlets. In this arrangement, the air inlets 14 on the air guide plate 7 and the middle fans are aligned differently, meaning the airflow from the two central fans is partially blocked by the connecting reinforcement rib 15 at the center of the wind-collecting plate 9. Although some airflow is blocked, the heat dissipation requirements of the pump source assembly 3a are still met. Furthermore, the arrangement is more compact, the wind-collecting plate is smaller, and the overall structure is more compact.

[0058] In some embodiments of this application, see Figure 11 As shown in FIG, the air-cooling heat dissipation mechanism 100 further includes a third power component 54 (e.g., the main control unit 29) and a heat sink 34. The heat generated by the third power component 54 is less than that generated by the first and second power components 1 and 3. The heat sink 34 is used to cool the third power component 54 and is located in the downstream region of the heat dissipation channel 5. In this embodiment, the air-cooling heat dissipation mechanism 100 is positioned upstream, the pump source assembly 3a is midstream, and the heat sink 34 of the main control unit 29's circuit board is located in the downstream region of the heat dissipation channel 5. Although the airflow passing through the fiber optic disc assembly 1a and pump source assembly 3a is heated, the heat generated by the main control unit 29's circuit board is much lower than that of the first two modules, and the circuit board itself has strong heat resistance. Therefore, its placement in the latter half of the cooling airflow direction can also achieve good heat dissipation. In this embodiment, the cooling airflow path simultaneously cools the first power component 1 (e.g., the fiber optic tray assembly 1a), the second power component 3 (e.g., the pump source assembly 3a), and the third power component 54 (e.g., the main control unit 29). This balances the heat generation, heat resistance, and heat dissipation requirements of each module. A single cooling fan can dissipate heat for multiple major heat-generating modules, resulting in high heat dissipation efficiency, a reduced number of components, and a compact structure. Furthermore, because the heat sink 34 of the main control unit 29's circuit board is located downstream of the heat dissipation channel 5, a temperature sensor is positioned on the heat sink 34 or on the side closest to the pump source assembly 3a and electrically connected to the main control unit 29's circuit board. This allows the main control unit 29 to monitor and control abnormal heat dissipation behavior of the pump source assembly 3a.

[0059] Furthermore, in some embodiments of the present application, temperature sensors are installed in the first power component 1 (e.g., fiber optic reel assembly 1a), the second power component 3 (e.g., pump source assembly 3a), and the third power component 54 (e.g., main control unit 29). In this embodiment, the air-cooling heat dissipation mechanism 100 includes temperature sensors (e.g., thermistors) in all three power components, effectively monitoring temperature changes in each module of the system. Based on the monitored temperature, control commands such as stopping operation and controlling the speed / power of the fan assembly 2 are issued, thereby improving safety and heat dissipation.

[0060] The air-cooling heat dissipation mechanism for a laser welding machine provided in the embodiment of the present application is not only compact in overall size, but also can simultaneously dissipate heat for the optical fiber disk module and the pump source module using the same set of fan modules. It also has high heat dissipation efficiency, and the design of the heat dissipation flow channel that supplies air vertically and flows out to both sides of the pump source module after diversion shortens the air flow path, solves the problem of temperature concentration, improves heat dissipation efficiency, makes the welding machine emit light more stably, and improves welding performance. In addition, the air inlet channels of the two air inlet areas are set at the same time, which increases the air intake volume and improves the heat dissipation effect; the structural design of the wind guide plate, the wind gathering plate and the heat dissipation fins not only improves the heat dissipation efficiency, but also gathers the airflow to increase the wind pressure and reduce wind noise. Figure 12 and Figure 13As shown in , the present application also provides a laser welding machine 200, comprising a chassis 16, comprising a front panel 17, a rear panel 18, a top panel 19, a bottom panel 20, a left side panel 21, and a right side panel 22. In some embodiments of the present application, the left side panel 21 and the top panel 19 are integrally L-shaped (forming an L-shaped side panel), and the rear panel 18 and the bottom panel 20 can also be integrally L-shaped (forming an L-shaped main frame), facilitating assembly of the entire chassis 16. An isolation mounting plate 23 is provided within the chassis 16, dividing the interior of the chassis 16 into a first installation space 24 on the left side and a second installation space 25 on the right side. The air-cooling heat dissipation mechanism 100 described in any of the above embodiments is provided within the first installation space 24, wherein the first power component 1 is a fiber optic disc assembly 1a, and the second power component 3 is a pump source assembly 3a. A first air inlet 26 is defined in the upper center region of the left side panel 21, with the fiber optic disc assembly 1a located adjacent to the first air inlet 26. When cooling the optical module in the first installation space 24, external airflow flows in from the first air inlet 26, passes through the second air inlet 48, the hollow area 50, and the third air inlet 53, and then flows into the fan assembly 2. The cooling airflow from the fan assembly 2 then passes through the air guide inlet 14, is divided, and then blows vertically through the heat dissipation channel 5 to the heat dissipation fins 8 on the cooling surface of the pump source assembly 3a, and then flows out through the air outlet 6. The pump source assembly 3a is mounted on the isolation mounting plate 23. The air outlet 6 of the heat dissipation channel 5 faces the front panel 17 and the rear panel 18, respectively. Air outlet mesh holes 32 are provided on the front panel 17 and the rear panel 18 at positions corresponding to the air outlet 6.

[0061] An electrical unit 27 is disposed in the second installation space 25. An auxiliary air inlet 30 is defined on the right side panel 22. The electrical unit 27 includes a cooling fan assembly 28. Auxiliary air outlet meshes 31 are defined on the front panel 17 and / or the rear panel 18. When cooling the electrical unit 27 in the second installation space 25, external cooling air enters the second installation space 25 through the auxiliary air inlet 30, passes through the cooling fan assembly 28, and is blown out through the auxiliary air outlet meshes 31 to dissipate heat from the electrical unit.

[0062] A laser welding machine 200 provided in this embodiment adopts a photoelectric separation structural design. The optical module (including the optical fiber disk assembly 1a and the pump source assembly 3a) and the electrical unit 27 (including the main control unit, etc.) are distributed in the cavities of the two installation spaces of the chassis 16, and are separated by an isolation mounting plate 23 in the middle to form two air ducts for separate heat dissipation. The heat dissipation channel of the optical module adopts a side air intake and front and rear air outlet air duct design. The two cavities where the optical module and the electrical unit 27 are located are respectively on the horizontal sides of the chassis 16. The air inlets of the two air ducts are respectively arranged on the horizontal sides of the chassis 16, and the air outlets are respectively on the front and rear sides of the chassis 16. The airflow flowing through the air inlet on the optical module side is directed toward the radiator of the optical module, and then discharged in the direction of the front and rear sides of the chassis 16. The optoelectronic separation and separate heat dissipation design of this embodiment, using two air ducts, distributes the optical module and electrical unit within the two cavities of the chassis 16, dissipating heat separately and improving heat dissipation efficiency. Furthermore, the cover panels on both sides of the chassis 16 (i.e., the left panel 21 and the right panel 22) can be opened independently, allowing the optical module and electrical unit to be repaired separately. Furthermore, the horizontal layout of the two installation spaces and heat dissipation ducts helps reduce the size of the welding machine. Simultaneously, air enters from both sides of the machine body and exits from the front and back, shortening the heat dissipation distance, reducing heat concentration, and improving heat dissipation efficiency. This allows for full utilization of the sides of the chassis and the front and back housings, optimizing the layout of the various components of the welding machine.

[0063] In some embodiments of the present application, the electrical unit 27 further includes a main control unit 29 and a heat sink 34 provided on the main control unit. The main control unit 29 controls the human-computer interaction, calculation processing, laser control, wire feeding, handheld welding gun head, heat dissipation control, safety protection, etc. of the entire laser welding machine. The heat sink 34 is used to cool the main control unit 29. An installation area 33 is provided on the isolation mounting plate 23 corresponding to the downstream of the heat dissipation channel 5, and the installation area 33 is recessed toward the heat dissipation channel 5. The main control unit 29 is embedded in the installation area 33, and the heat sink 34 is located in the downstream area of ​​the heat dissipation channel 5 (for example, in the vicinity of the air outlet 6). In this embodiment, the main control unit 29 dissipates heat with the help of the heat dissipation channel of the optical module. The main control unit 29 is provided downstream of the heat dissipation channel 5 compared to the pump source assembly 3a. After the airflow passes through the optical fiber disk assembly 1a and the pump source assembly 3a, the heat dissipation of the circuit board of the main control unit 29 can also be achieved. For details, see Figure 14As shown in the figure, a special heat dissipation method is designed for the main control unit 29 that needs heat dissipation. For example, the MOS and power resistors on the main control unit are embedded in the installation area 33 of the recessed structure on the isolation mounting plate 23. The heat sink 34 of the circuit board is located in the heat dissipation channel 5 of the pump source component 3a. The other modules of the electrical unit 27 can use the heat dissipation channel formed by the auxiliary air inlet 30, the cooling fan component 28, and the auxiliary air outlet mesh 31 in the second installation space 25 to dissipate heat. In this embodiment, the heat dissipation scheme is such that, viewed from the inlet airflow direction a of the pump source module's heat dissipation channel, the fiber optic disc assembly 1a is located farthest upstream, the pump source assembly 3a is located midstream, and the heat sink 34 of the main control unit 29 is located downstream of the heat dissipation channel 5 of the pump source assembly 3a. Although the airflow passing through the fiber optic disc assembly 1a and the pump source assembly 3a is heated, the power resistors and MOS transistors on the circuit board generate only 50-80W of heat, much less than the heat generated by the first two modules. Furthermore, the circuit board itself has strong heat resistance. Therefore, its placement in the latter half of the air duct also effectively dissipates heat. Specifically, the fiber optic disc assembly 1a, the pump source assembly 3a, and the heat sink 34 of the main control unit 29 circuit board are sequentially positioned along the same heat dissipation channel, comprehensively addressing the heat generation, heat resistance, and heat dissipation requirements of each module. A single cooling fan can dissipate heat for multiple major heat-generating modules, achieving high heat dissipation efficiency, reducing the number of components, and achieving a compact structure. In particular, the circuit board isn't entirely housed within the pump source's heat dissipation channels. Instead, it utilizes its heat sinks to dissipate heat through the heat dissipation channels, while the circuit board is located in a separate side space. This not only creates a compact structure but also prevents heat from the pump source assembly 3a and other modules from affecting the circuit board, making the entire welding machine more stable. Furthermore, maintenance is more convenient, as the circuit board and pump source module can be repaired separately, complementing each other's impact.

[0064] In other embodiments of the present application, the laser welding machine 200 includes the air-cooling heat dissipation mechanism 100 described in any of the above embodiments, wherein the first power component 1 is a fiber optic disc component 1a, and the second power component 3 is a pump source component 3a. It also includes a control unit 29 and a heat sink 34 provided on the control unit, the heat sink 34 is used to cool the control unit 29, and the heat sink 34 is located in the downstream area of ​​the heat dissipation channel 5. An isolation mounting plate 23 is provided in the chassis 16 of the laser welding machine 200 to divide the interior of the chassis 16 into a first mounting space 24 and a second mounting space 25, and the air-cooling heat dissipation mechanism 100 is installed in the first mounting space 24. An installation area 33 is provided on the isolation mounting plate 23 corresponding to the downstream of the heat dissipation channel 5, and the control unit (29) is embedded in the installation area 33. A laser controller 56, a main power supply 57 and a cooling fan component 28 are also provided in the second mounting space 25. The laser controller 56 is mainly used to drive the optical module (fiber optic disc component and pump source component, etc.). The main power supply 57 provides power to the entire welding machine, ensuring the normal operation of core components such as the laser (fiber optic disc assembly and pump source assembly, etc.) and the control system (main control unit). The chassis 16 corresponding to the second installation space 25 is provided with an auxiliary air inlet 30 and an auxiliary air outlet mesh 31. The cooling fan assembly 28 is used to allow external cooling air to enter the second installation space 25 through the auxiliary air inlet 30 and exit the second installation space through the auxiliary air outlet mesh 31. In this embodiment, the optical module and electrical module are distributed in two cavities of the chassis 16 (i.e., the first installation space 24 and the second installation space 25), dissipating heat separately and improving heat dissipation efficiency. Furthermore, the air-cooling heat dissipation mechanism 100 of the optical module can simultaneously cool the fiber optic disc assembly 1a, the pump source assembly 3a, and the main control unit 29 along the cooling airflow path, taking into account the heat generation, heat resistance, and heat dissipation requirements of each module. Using a single cooling fan assembly can dissipate heat for multiple major heat-generating modules, achieving high heat dissipation efficiency, reducing the number of components, and achieving a compact structure. The heat dissipation channel including the auxiliary air inlet 30, the cooling fan assembly 28 and the auxiliary air outlet mesh 31 is provided in the electrical module to dissipate heat for the electrical unit 27, and can also reduce the thermal impact of the heat generated by the optical module on the electrical unit 27, making the entire welding machine work more stably.

[0065] Furthermore, in some embodiments of the present application, temperature sensors (such as thermistors) are provided in the fiber optic disk assembly 1a, the pump source assembly 3a, the control unit 29 and the second installation space 25, so that the main control unit 29 can monitor and control the heat dissipation of the entire heat dissipation mechanism.

[0066] In some embodiments of the present application, a bracket 35 for winding cables is provided on the periphery of the first air inlet 26. In this embodiment, an air inlet is designed in the central area of ​​the bracket 35 for winding armored cables on the side panel to meet the air volume requirements of the optical module. In this embodiment, the air inlet of the optical module unit of the welding machine is provided on the side panel on the air inlet channel side of the optical fiber tray assembly (i.e., on the left side panel), specifically, it is provided in the central area of ​​the bracket 35 for winding armored cables. The central area of ​​the bracket 35 for winding armored cables is the air inlet, and the surrounding area is the bracket for winding optical cables. This not only meets the requirements for winding cables, but also meets the size and position requirements of the air inlet. The first air inlet 26 can face the second air inlet 48 and the hollow area 50 on the air inlet channel side of the optical fiber tray assembly 1a, making the heat dissipation flow path shorter and improving the heat dissipation effect. In addition, an air inlet is set at the center of the bracket 35, so that when the welding machine is working or moving, the optical cable will not interfere with or block the air intake, fully utilizing the space on the side and optimizing the position layout. The air inlet is set at the center of the bracket 35, making the bracket larger as a whole, the radius of the optical cable winding is larger, and the winding is easier and more stable.

[0067] In some embodiments of the present application, temperature sensors (e.g., thermistors, which can monitor the temperature of power-generating components in real time) are installed in the fiber optic reel assembly 1a, pump source assembly 3a, and electrical unit 27 to monitor the temperature of the entire system. In this embodiment, the welding machine effectively monitors temperature changes in each module of the system and, based on the monitored temperature, initiates control commands such as shutdown to prevent excessive temperatures from causing equipment damage or safety incidents, thereby improving equipment stability and safety.

[0068] The above is a detailed introduction to the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for those skilled in the art, according to the idea of ​​the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. An air-cooling heat dissipation mechanism (100), characterized in that: The invention comprises a first power component (1), a fan component (2), and a second power component (3) which are sequentially arranged along an air inlet airflow direction (a); the heat generation of the second power component (3) is higher than the heat generation of the first power component (1); the fan component (2) is used to allow airflow to flow from the outside through the first power component (1) to the second power component (3) to dissipate heat from the first power component (1) and the second power component (3); The heat exchange chamber (4) is provided between the fan assembly (2) and the second power assembly (3), wherein the heat exchange chamber (4) includes at least two heat dissipation channels (5) extending in different directions. The heat exchange chamber (4) is also used to divert the incoming airflow into different heat dissipation channels (5), wherein the incoming airflow direction (a) and the outgoing airflow direction (b) of the air outlet (6) of the heat dissipation channel (5) are substantially perpendicular.

2. The air-cooling heat dissipation mechanism (100) according to claim 1, characterized in that: An air guide (7) and at least two groups of heat dissipation fins (8) are provided in the heat exchange chamber (4), the heat dissipation fins (8) are closely attached to the second power component (3), and at least two groups of air collecting plates (9) are provided on a side of the air guide (7) facing the heat dissipation fins (8), the end of each group of the air collecting plates (9) extending to the root of a corresponding group of the heat dissipation fins (8), and an air guide notch (10) is provided at the end; Each of the heat dissipation channels (5) comprises a group of heat dissipation fins (8) and a corresponding group of air collecting plates (9), and the air guide notches (10) are connected to the air outlets (6).

3. The air-cooling heat dissipation mechanism (100) according to claim 1, characterized in that: The first power component (1) is provided with a hollow first air inlet area (11) in the middle area of ​​the side surface perpendicular to the air inlet airflow direction (a), and the first power component (1) is provided with a second air inlet area (12) in the edge area of ​​the side surface perpendicular to the air inlet airflow direction (a); the air inlet volume of the second air inlet area (12) is not less than the air inlet volume of the first air inlet area (11).

4. The air cooling heat dissipation mechanism (100) according to claim 3, characterized in that: The ratio of the air intake volume of the first air intake area (11) to the air intake volume of the second air intake area (12) is in the range of [2 / 5, 2 / 3].

5. The air-cooling heat dissipation mechanism (100) according to claim 2, characterized in that: The wind collecting plate (9) is provided with a plurality of small holes and / or the heat dissipation fins (8) are provided with a plurality of small holes.

6. The air-cooling heat dissipation mechanism (100) according to claim 1, characterized in that: The fan assembly (2) comprises at least one fan, the blowing direction of the fan being substantially perpendicular to the heat dissipation surface of the second power assembly (3) facing the fan assembly (2); the included angle between the blowing direction of the fan and the heat dissipation surface is 90°±5°.

7. The air-cooling heat dissipation mechanism (100) according to claim 1, characterized in that: The fan assembly (2) comprises a plurality of fans, which are divided into at least two groups, with each group of fans aligned with a heat dissipation channel (5), or the fans are divided into multiple groups arranged evenly, blowing towards each heat dissipation channel (5).

8. The air-cooling heat dissipation mechanism (100) according to claim 1, characterized in that: The heat exchange chamber (4) comprises two heat dissipation channels (5) extending in opposite directions, and the heat dissipation airflow passing through the fan assembly (2) flows to the second power assembly (3), and flows out from both sides of the second power assembly (3) through the two heat dissipation channels (5); An air guide (7) and two groups of heat dissipation fins (8) are provided in the heat exchange chamber (4), the heat dissipation fins (8) are closely attached to the second power component (3), the air guide (7) comprises a frame (13), two air guide inlets (14) are provided on the frame (13), and each of the air guide inlets (14) is provided with an air collecting plate (9) on one side facing the second power component (3), the end of the air collecting plate (9) extends to the root of a corresponding group of heat dissipation fins (8), and an air guide notch (10) is provided at the end; Each of the heat dissipation channels (5) comprises a group of heat dissipation fins (8), a corresponding air guide inlet (14) and a corresponding group of air collecting plates (9); the air guide notch (10) is connected to the air outlet (6).

9. The air-cooling heat dissipation mechanism (100) according to claim 8, characterized in that: The fan assembly (2) includes a plurality of fans, which are divided into two groups, each group of fans is aligned with the corresponding air guide inlet (14) of a heat dissipation channel (5), or the fans are divided into three evenly arranged groups, one group of fans is set on the air guide inlet (14) corresponding to each heat dissipation channel (5), and the middle group of fans at least partially blows toward the connecting reinforcement rib (15) between the two air guide inlets.

10. The air-cooling heat dissipation mechanism (100) according to any one of claims 1 to 9, characterized in that: It also includes a third power component (54) and a heat sink (34), wherein the heat generated by the third power component (54) is less than the heat generated by the first power component (1) and the second power component (3), and the heat sink (34) is used to cool the third power component (54). The heat sink (34) is located in the downstream area of ​​the heat dissipation channel (5).

11. The air cooling heat dissipation mechanism (100) according to claim 10, characterized in that: At least one of the first power component (1), the second power component (3), the third power component (54) and the heat sink (34) is provided with a temperature sensor.

12. A laser welding machine (200), characterized in that The air-cooling heat dissipation mechanism (100) comprises the air-cooling heat dissipation mechanism (100) as described in any one of claims 1 to 9, wherein the first power component (1) is a fiber disk component (1a), and the second power component (3) is a pump source component (3a); It also includes a main control unit (29) and a heat sink (34) provided on the main control unit, wherein the heat sink (34) is used to cool the main control unit (29), and the heat sink (34) is located in the downstream area of ​​the heat dissipation channel (5).

13. A laser welding machine (200), comprising a chassis (16), wherein the chassis (16) comprises a front panel (17), a rear panel (18), a top panel (19), a bottom panel (20), a left side panel (21) and a right side panel (22), characterized in that: An isolation mounting plate (23) is provided in the chassis (16) to divide the interior of the chassis (16) into a first mounting space (24) on the left and a second mounting space (25) on the right; The first installation space (24) is provided with an air-cooling heat dissipation mechanism (100) according to any one of claims 1 to 11, wherein the first power component (1) is a fiber optic disc component (1a), the second power component (3) is a pump source component (3a), a first air inlet (26) is provided on the left side panel (21), the fiber optic disc component (1a) is close to the first air inlet (26), the pump source component (3a) is provided on the isolation installation plate (23), the air outlet (6) of the heat dissipation channel (5) is respectively oriented toward the front panel (17) and the rear panel (18), and air outlet mesh holes (32) are provided on both the front panel and the rear panel; An electrical unit (27) is provided in the second installation space (25), an auxiliary air inlet (30) is provided on the right side panel (22), the electrical unit (27) includes a cooling fan assembly (28), and auxiliary air outlet mesh holes (31) are provided on the front panel (17) and / or the rear panel (18).

14. A laser welding machine (200) according to claim 13, characterized in that: The electrical unit (27) further includes a main control unit (29) and a heat sink (34) provided on the main control unit, wherein the heat sink (34) is used to cool the main control unit (29), and an installation area (33) is provided on the isolation installation plate (23) corresponding to the downstream of the heat dissipation channel (5), the main control unit (29) is embedded in the installation area (33), and the heat sink (34) is located in the heat dissipation channel (5).

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