A wind cooling heat dissipation mechanism for a laser welding machine and the laser welding machine

Abstract

The application belongs to the technical field of laser welding machines, and provides a wind-cooled heat dissipation mechanism for a laser welding machine and the laser welding machine, which comprises a first power assembly, a fan assembly and a second power assembly arranged in sequence along an air inlet airflow direction, further comprises a heat exchange cavity arranged 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 substantially perpendicular to the air outlet airflow direction of an air outlet of the heat dissipation flow channel, the wind-cooled heat dissipation mechanism can simultaneously realize heat dissipation of two power modules by using the same fan assembly, the heat dissipation efficiency is high, the number of heat dissipation modules is saved, the overall volume is compact, the air supply mode is perpendicular, the air flow stroke is shortened, the problem of temperature concentration is solved, the heat dissipation efficiency is improved, the welding machine adopting the wind-cooled heat dissipation mechanism emits light more stably, and the welding performance is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of laser welding machines, in particular to a wind cooling heat dissipation mechanism for a laser welding machine and the laser welding machine. BACKGROUND

[0002] A laser welding machine (also known as a laser welder or a laser welding machine) is a welding device that uses a high-energy laser beam for material processing, mainly applied in the fields of automobile manufacturing, electronics industry, biomedical engineering and mold repair. Laser welding machines can be divided into handheld, automatic and galvanometer types according to the working mode, and the core components include laser generators, optical fiber transmission systems, cooling systems and control systems. The handheld design enhances the flexibility of operation and is suitable for on-site maintenance and small batch production. Most handheld welders use water cooling or air cooling to dissipate heat. The water cooling method has the problems of complex water cooling pipe structure and the need for a water cooling machine to supply water, so the overall volume is large, which is not conducive to the transportation and movement of the welding machine. The use of air cooling can improve portability.

[0003] In existing air-cooled handheld welding machines, the heat source (such as a pump source, a circuit board, etc.) is placed on a heat sink (such as a heat dissipation fin), and a fan is arranged on one side of the heat sink. The fan uses air suction or air blowing to dissipate heat from the heat sink, which requires a large volume of heat sink, and the overall volume of the welding machine is large. Secondly, since the heat dissipation airflow generated by the fan blows from one side of the heat sink to the other side, the airflow has a long travel distance, which can easily cause the temperature of the heat sink to gradually accumulate along the airflow direction, resulting in a large temperature difference between the upstream and downstream of the heat sink in the airflow direction, and uneven heat dissipation of the heat source, resulting in poor heat dissipation efficiency. In addition, the power requirements of current laser welding machines are higher, especially the power requirements of individual pump sources, which generate more heat. The traditional air-cooled heat dissipation method is more difficult to meet the heat dissipation requirements, and further weakens the light stability and welding performance of the laser welding machine. SUMMARY

[0004] Therefore, the purpose of the present application is to provide a wind cooling heat dissipation mechanism for a laser welding machine and the laser welding machine.

[0005] In a first aspect, the embodiments of the present application provide a wind cooling heat dissipation mechanism for a laser welding machine, comprising a first power component, a fan component and a second power component arranged in sequence along an air inflow direction, the second power component having a higher heat generation than the first power component, the fan component being configured to cause air flow from outside to flow from 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 cavity arranged between the fan component and the second power component, the heat exchange cavity comprising at least two heat dissipation flow channels extending in different directions, the heat exchange cavity being further configured to cause the air inflow to be divided into different heat dissipation flow channels, the air inflow direction being substantially perpendicular to an air outflow direction of an air outlet of the heat dissipation flow channel.

[0006] In some embodiments, the heat exchange cavity is provided with a wind guide and at least two groups of heat dissipation fins, the heat dissipation fins being close to the second power component, the wind guide being provided with at least two groups of wind collecting plates on a side facing the heat dissipation fins, the end of each group of wind collecting plates extending to the root of a corresponding group of heat dissipation fins, and a wind guide gap being arranged at the end, each heat dissipation flow channel comprising a group of heat dissipation fins and a corresponding group of wind collecting plates, and the wind guide gap being communicated with the air outlet.

[0007] In some embodiments, the first power component is provided with a hollow first air inflow area in a middle region of a side surface perpendicular to the air inflow direction, and is provided with a second air inflow area in an edge region of the side surface perpendicular to the air inflow direction, the air inflow amount of the second air inflow area being not less than that of the first air inflow area.

[0008] In some embodiments, further, the ratio of the air inflow amount of the first air inflow area to that of the second air inflow area ranges from 2 / 5 to 2 / 3. Further, in some embodiments, the ratio of the air inflow amount of the first air inflow area to that of the second air inflow area is 1:2.

[0009] In some embodiments, a plurality of small holes are arranged on the wind collecting plate and / or a plurality of small holes are arranged on the heat dissipation fins.

[0010] In some embodiments, the fan component comprises at least one fan, the blowing direction of the fan being substantially perpendicular to a heat dissipation surface of a side of the second power component facing the fan component, and the angle between the blowing direction of the fan and the heat dissipation surface being 90°±5°.

[0011] In some embodiments, the fan component comprises a plurality of fans, the fans being divided into at least two groups, each group of fans being aligned with a heat dissipation flow channel, or the fans being divided into multiple groups arranged uniformly and blowing to each heat dissipation flow channel.

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

[0013] In some embodiments, the fan assembly comprises a plurality of fans, the fans are divided into two groups, each group of fans is aligned with the corresponding wind guide inlet of one heat dissipation channel, or the fans are divided into three groups arranged uniformly, each heat dissipation channel is provided with a group of fans on the corresponding wind guide inlet, and the middle group of fans at least partially blows to the connecting reinforcing rib between the two wind guide inlets.

[0014] In some embodiments, the air-cooled heat dissipation mechanism further comprises a third power assembly and a heat dissipation fin, the third power assembly has a smaller heat generation than the first power assembly and the second power assembly, the heat dissipation fin is used for cooling the third power assembly, and the heat dissipation fin is located in the downstream region of the heat dissipation channel.

[0015] In some embodiments, the first power assembly, the second power assembly and the third power assembly are each provided with a temperature sensor.

[0016] In the second aspect, the embodiments of the present application provide a laser welding machine, comprising the air-cooled heat dissipation mechanism in any of the above embodiments, wherein the first power assembly is a fiber disc assembly, and the second power assembly is a pump source assembly; the laser welding machine further comprises a main control unit and a heat dissipation fin arranged on the main control unit, the heat dissipation fin is used for cooling the main control unit, and the heat dissipation fin is located in the downstream region of the heat dissipation channel.

[0017] In a third aspect, the embodiment of the present application further provides a laser welding machine, comprising a cabinet, the cabinet comprising a front panel, a rear panel, a top plate, a bottom plate, a left side plate and a right side plate, a partitioning mounting plate is arranged in the cabinet to divide the cabinet into a first mounting space on the left side and a second mounting space on the right side; the first mounting space is provided with the air-cooled heat dissipation mechanism according to any one of the above embodiments, wherein the first power component is an optical fiber disc component, the second power component is a pump source component, a first air inlet is formed on the left side plate, the optical fiber disc component is close to the first air inlet, the pump source component is arranged on the partitioning mounting plate, the air outlets of the heat dissipation flow channels respectively face the front panel and the rear panel, and air outlet mesh holes are arranged on the front panel and the rear panel; the second mounting space is provided with an electrical unit, an auxiliary air inlet is formed on the right side plate, the electrical unit comprises a heat dissipation fan assembly, and auxiliary air outlet mesh holes are arranged on the front panel and / or the rear panel.

[0018] In some embodiments, the electrical unit further comprises a main control unit and a cooling fin arranged on the main control unit, the cooling fin being used for cooling the main control unit, a mounting area corresponding to the downstream of the heat dissipation flow channel is arranged on the partitioning mounting plate, the main control unit is embedded in the mounting area, and the cooling fin is located in the heat dissipation flow channel.

[0019] The beneficial effects achieved by the present application.

[0020] The air-cooled heat dissipation mechanism and the laser welding machine provided by the present application, wherein the fan assembly is arranged between two power modules with different heat generation amounts, and the air inlet flow direction and the air outlet flow direction are substantially perpendicular, the divided air inlet flow flows out from the side along the heat dissipation flow channels in different directions, the air-cooled heat dissipation mechanism can simultaneously realize heat dissipation of the two power modules (such as the optical fiber disc module and the pump source module) by using the same fan assembly, the heat dissipation efficiency is high, the number of heat dissipation modules is saved, the overall volume is compact, the perpendicular air supply mode shortens the air flow stroke, solves the problem of temperature concentration, and improves the heat dissipation efficiency. The welding machine using the air-cooled heat dissipation mechanism emits light more stably, and improves the welding performance.

[0021] In addition, the laser welding machine provided in the embodiment of the present application distributes the optical module (optical fiber disc assembly and pump source assembly) and the electrical module in two cavities (i.e. the first mounting space and the second mounting space) of the cabinet, respectively dissipates heat, and improves the heat dissipation efficiency. In addition, the air cooling heat dissipation mechanism of the optical module can realize cooling of the optical fiber disc assembly, the pump source assembly and the main control unit at the same time on the flow path of the cooling air flow, and takes into account the heat generation, heat resistance and heat dissipation requirements of each module. The same set of cooling fan assembly can realize heat dissipation of multiple main heat generating modules, has high heat dissipation efficiency, reduces the number of parts, and has compact structure. The second mounting space where the electrical module is located is provided with an auxiliary air inlet, a cooling fan assembly and a heat dissipation channel of an auxiliary air outlet mesh, which dissipates heat for the electrical unit, and also reduces the heat influence of the optical module on the electrical unit, so that the whole welding machine works more stably.

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

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0024] Figure 1 The three-dimensional view of the air cooling heat dissipation mechanism in the embodiment of the present application is shown Figure 1 ;

[0025] Figure 2 The three-dimensional view of the air cooling heat dissipation mechanism in the embodiment of the present application is shown Figure 2 ;

[0026] Figure 3 The cross-sectional view of the embodiment of the present application along the A-A direction is shown Figure 2 ;

[0027] Figure 4 The cross-sectional view of the embodiment of the present application along the B-B direction is shown Figure 2 ;

[0028] Figure 5 The exploded view of the air cooling heat dissipation mechanism in the embodiment of the present application is shown

[0029] Figure 6 The exploded view of the optical fiber disc assembly in the embodiment of the present application is shown

[0030] Figure 7A schematic diagram of the mounting structure of the pump source assembly and the heat dissipation fins in the embodiment of the present application is shown.

[0031] Figure 8 A schematic diagram of the structure of the air deflector in the embodiment of the present application is shown.

[0032] Figure 9 A kind of arrangement of fan assembly in the embodiment of the present application is shown.

[0033] Figure 10 Another arrangement of fan assembly in the embodiment of the present application is shown.

[0034] Figure 11 A schematic diagram of the mounting position of the third power assembly and the heat dissipation fins in the embodiment of the present application is shown.

[0035] Figure 12 A perspective view of the laser welding machine in the embodiment of the present application is shown.

[0036] Figure 13 An exploded view of the laser welding machine in the embodiment of the present application is shown.

[0037] Figure 14 A schematic diagram of the mounting position of the main control unit and the heat dissipation fins of the laser welding machine in the embodiment of the present application is shown.

[0038] Wherein, 100 - air-cooled heat dissipation mechanism, a - air inlet flow direction, 1 - first power component, 1a - optical fiber disc component, 2 - fan component, 3 - second power component, 3a - pump source component, 4 - heat exchange cavity, 5 - heat dissipation flow channel, 6 - air outlet, b - air outlet flow direction, 7 - air guide part, 8 - heat dissipation fin, 9 - air guide plate, 10 - air guide gap, 11 - first air inlet area, 12 - second air inlet area, 13 - frame, 14 - air guide inlet, 15 - connecting reinforcing rib, 200 - laser welding machine, 16 - case, 17 - front panel, 18 - rear panel, 19 - top plate, 20 - bottom plate, 21 - left side plate, 22 - right side plate, 23 - isolation mounting plate, 24 - first mounting space, 25 - second mounting space, 26 - first air inlet, 27 - electrical unit, 28 - heat dissipation fan component, 29 - main control unit, 30 - auxiliary air inlet, 31 - auxiliary air outlet mesh, 32 - air outlet mesh, 33 - mounting area, 34 - heat dissipation fin, 35 - support, 36 - connecting base, 37 - pump source support vertical plate, 38 - upper air baffle, 39 - lower air baffle, 40 - front support vertical plate, 41 - rear support vertical plate, 42 - optical fiber disc fixing plate, 43 - cover plate, 44 - hollow heat dissipation bottom plate, 45 - optical fiber, 46 - heat dissipation fin, 47 - optical fiber access end, 48 - second air inlet, 49 - optical fiber groove, 50 - hollow area, 51 - cladding light stripper, 52 - optical fiber disc mounting groove, 53 - third air inlet, 54 - third power component, 56 - laser controller, 57 - main power supply. DETAILED DESCRIPTION

[0039] The terms "comprise", "comprising", "contain", "containing", or "characterized by" in the specification and claims of this application and the said drawings are synonymous with "include", "including", or "characterized by" and are inclusive or open ended and do not exclude additional, unrecited elements or method steps. "Comprising" is a term of art that is used in the claim language to mean that the structure or method comprising the recited elements is included, but not to the exclusion of additional or unrecited elements or method steps.

[0040] It should be noted that like reference numerals and letters refer to like elements throughout the several views of the drawings, and that, once an element is defined in one drawing, it is not necessary to further define and explain it in the subsequent drawings, and further, that the terms "first", "second", "third" and the like merely identify descriptions and are not to be construed as indicating or implying relative importance. The term "about" in this application means comprising a small variation (up to + / - 10%) from the stated value.

[0041] It has been found in the present application that the existing air-cooled handheld welding machine has the problems of large volume of heat dissipation mechanism, easy heat concentration of radiator, uneven heat dissipation, poor heat dissipation efficiency, and difficulty in adapting to higher public power pump source.

[0042] To solve the above technical problems, one embodiment of the present application provides a forced air cooling mechanism, comprising a first power component, a fan component and a second power component arranged in sequence along the air flow direction, the second power component has a higher heat generation than the first power component, the fan component is used to make the air flow from the outside to the second power component through the first power component to cool the first and second power components; further comprising a heat exchange cavity arranged between the fan component and the second power component, the heat exchange cavity comprises at least two heat dissipation flow channels extending in different directions, the heat exchange cavity is also used to make the air flow split into different heat dissipation flow channels, and the air flow direction and the air outlet direction of the heat dissipation flow channel are substantially perpendicular. The forced air cooling mechanism in the embodiment can simultaneously realize the heat dissipation of two power modules (such as fiber disc module and pump source module) by using the same fan component, has high heat dissipation efficiency, saves the number of heat dissipation modules, makes the overall volume compact, and the perpendicular air supply mode shortens the air flow stroke, solves the problem of temperature concentration, and improves the heat dissipation efficiency.

[0043] Another embodiment of the present application provides a laser welding machine, comprising a cabinet, the cabinet comprises a front panel, a rear panel, a top panel, a bottom panel, a left side panel and a right side panel, a partition mounting plate is arranged in the cabinet to divide the cabinet into a first mounting space on the left side and a second mounting space on the right side; the first mounting space is provided with the forced air cooling mechanism according to any one of the above embodiments, wherein the first power component is a fiber disc component, the second power component is a pump source component, a first air inlet is formed on the left side panel, the fiber disc component is close to the first air inlet, the pump source component is arranged on the partition mounting plate, the air outlets of the heat dissipation flow channels are respectively directed towards the front panel and the rear panel, and the front panel and the rear panel are both provided with air outlet mesh holes; the second mounting space is provided with an electrical unit, an auxiliary air inlet is formed on the right side panel, the electrical unit comprises a heat dissipation fan component, and the front panel and / or the rear panel is provided with an auxiliary air outlet mesh hole. The laser welding machine in the embodiment distributes the optical module and the electrical unit in two cavities of the cabinet, respectively dissipates heat, designs the heat dissipation flow channel, reduces heat concentration, improves heat dissipation efficiency, and the sealing plates of the two cabinets can be respectively opened, which is convenient for the maintenance of the optical module and the electrical unit, and is also conducive to reducing the volume of the welding machine.

[0044] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0045] Reference to“an embodiment” herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase“in one embodiment” in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily all referring to a common set of embodiments, of the application. It is explicitly contemplated that embodiments described herein can be combined with each other in their individual aspects.

[0046] The conventional air-cooled handheld welding machine adopts a separate heat sink structure (such as heat dissipation fins), and places the heat source (such as a pump source, a circuit board, etc.) of the welding machine on the heat sink, and a fan is arranged on one side of the heat sink to dissipate heat by using the fan to suck or blow air. It has been found in the present application that the air-cooled heat dissipation mechanism of the conventional air-cooled handheld welding machine has the following problems: ①Firstly, the volume of the heat dissipation plate accounts for a large proportion, and the overall heat dissipation mechanism has a large volume; ②Secondly, since the heat dissipation airflow generated by the fan blows from one side of the heat sink to the other side, the airflow has a long travel distance, and in the direction of the airflow, as the airflow gradually carries away the heat of the heat sink, the temperature on the heat sink gradually concentrates, and the temperature difference between the upstream and downstream of the heat sink in the direction of the airflow is large, that is, the heat of the heat sink on the side far from the fan (fan blowing mode) or close to the fan (fan suction mode) concentrates, so that the heat dissipation of the heat generating module is uneven, and the heat dissipation efficiency is poor. In addition, the power requirement of the current laser welding machine is higher, especially the power requirement of a single pump source is higher, and the heat generation of a single pump source is higher, so the conventional air-cooled heat dissipation method is more difficult to meet the heat dissipation demand, and the light stability and welding performance of the laser welding machine are more weakened.

[0047] In view of this, the present application provides a laser welding machine, which adopts an improved air-cooled heat dissipation mechanism, taking into account the difference in heat generation and heat dissipation demand of the fiber disc assembly and the pump source assembly, and using the same set of fan modules to simultaneously realize heat dissipation of the fiber disc assembly and the pump source assembly, which has high heat dissipation efficiency and saves the number of heat dissipation modules, so that the overall volume is compact, and the vertical air supply mode shortens the airflow travel distance, solves the problem of temperature concentration, improves the heat dissipation efficiency, and further makes the light of the welding machine more stable, and improves the welding performance.

[0048] In the embodiments of the present application, an air-cooled heat dissipation mechanism 100 is provided. As shown in Figure 1 and Figure 2As shown in the figure, the air-cooled heat dissipation mechanism 100 comprises a first power assembly 1, a fan assembly 2 and a second power assembly 3 arranged in sequence along the air inlet flow direction a. The heat dissipation amount of the second power assembly 3 is higher than that of the first power assembly 1. The fan assembly 2 is used to make the air flow from the outside to the second power assembly 3 through the first power assembly 1, so as to dissipate heat from the first power assembly 1 and the second power assembly 3. As the wind flows from upstream to downstream, the temperature gradually rises, therefore, the positions of different modules need to be reasonably set according to the heat dissipation amount, heat resistance and heat dissipation requirement of each module, so as to form an overall heat dissipation structure and flow direction meeting the heat dissipation requirement of each module. In the air-cooled heat dissipation mechanism 100 of the present application, the fan assembly 2 is arranged between the two power assemblies, the fan assembly 2 simultaneously dissipates heat from the first power assembly 1 and the second power assembly 3, the wind first passes through the first power assembly 1 and then vertically blows to the second power assembly 3, the power of the first power assembly 1 is small and the heat generated is small, although the temperature of the air inlet flow rises, the second power assembly 3 can still be effectively cooled, the two power assemblies share a set of heat dissipation fan assembly, the number of parts is reduced, and the volume of the whole air-cooled heat dissipation mechanism is reduced.

[0049] As shown in the figure, Figure 3 and Figure 4 As shown in the figure, the air-cooled heat dissipation mechanism 100 of the present application comprises a heat exchange cavity 4 arranged between the fan assembly 2 and the second power assembly 3. The heat exchange cavity 4 comprises at least two heat dissipation flow channels 5 extending in different directions. The heat exchange cavity 4 is used to make the air inlet flow branch into different heat dissipation flow channels 5. The air inlet flow direction a and the air outlet flow direction b of the air outlet 6 of the heat dissipation flow channel 5 are substantially perpendicular. In the present application, the air flow axis of the fan assembly 2 vertically blows to the heat dissipation surface of the second power assembly 3 (for example, the pump source assembly), the cooling air flow passing through the fan assembly 2 flows to the second power assembly 3 (for example, the pump source assembly), the air flow in the heat exchange cavity 4 is separated into different heat dissipation flow channels 5, and then flows out from the air outlet 6 of the heat dissipation flow channel 5, the cooling air flow directly blows to the second power assembly 3 (for example, the pump source assembly) with high heat dissipation amount and concentration, and then flows out in different directions substantially perpendicular to the air inlet flow direction a, the air flow stroke is short, so that the second power assembly 3 (for example, the pump source assembly) does not generate temperature concentration, the temperature difference on different sides is eliminated, the heat dissipation efficiency of the second power assembly 3 (for example, the pump source assembly) is improved, the light emission of the welding machine is more stable, and the welding performance is improved.

[0050] In some embodiments of the present application, the fan in the fan assembly 2 is an axial fan, which has compact structure and can save a lot of space, and is easy to install.

[0051] In the embodiments of the present application, generally, the higher the heat dissipation requirement of a power component is, the higher the heat dissipation requirement of the power component is. The cooling air flow first passes through the module with low heat dissipation requirement (low heat dissipation), and then passes through the module with high heat dissipation requirement (high heat dissipation), which can avoid the cooling air flow being overheated by the module with high heat dissipation, so as to not play a role in cooling the module with low heat dissipation. For example, the heat dissipation of the pump source component in the laser welding machine is higher than that of the optical fiber disc component, and the heat dissipation requirement of the pump source component is higher than that of the optical fiber disc component. When designing the flow direction of the cooling air, the air flow is considered to first pass through the optical fiber disc component with low heat dissipation, and then pass through the pump source component with high heat dissipation.

[0052] In some embodiments of the present application, the air cooling heat dissipation mechanism 100 is applied to the laser welding machine to dissipate heat for the optical module, the first power component 1 is an optical fiber disc component, the power is about 400-500W, and the second power component 3 is a pump source component, the power is about 800W. The fan component 2 is arranged between the optical fiber disc component and the pump source component, and the optical fiber disc component and the pump source component are located upstream and downstream in the heat dissipation air flow direction respectively. The heat dissipation of the optical fiber disc component is much smaller than that of the pump source component (about 400-500W, mainly about 220-300W), and the positions of the other devices of the optical fiber disc are relatively dispersed and encapsulated. Considering the overall structure layout, it is designed on the upstream side, while the pump source component has high heat dissipation and is concentrated, and has high heat dissipation requirement, so it is arranged on the downstream side. In this way, the cooling air flow first dissipates heat for the optical fiber disc component with low heat dissipation, and the temperature of the air flow flowing through the optical fiber disc component does not increase significantly, and the pump source component with high heat dissipation can still be fully cooled. The fan component 2 in the present application is arranged between the optical fiber disc component 1a and the pump source component 3a, which takes into account the heat dissipation difference and heat dissipation requirement of the optical fiber disc module and the pump source module. The same fan module can be used to simultaneously dissipate heat for the optical fiber disc module and the pump source module, which has high heat dissipation efficiency and saves the number of heat dissipation modules, making the volume compact.

[0053] In summary, the air cooling heat dissipation mechanism 100 provided in the present application, the fan component 2 is arranged between two power modules with different heat dissipation, and the air inlet flow direction and the air outlet flow direction are basically perpendicular (for example, the included angle between the two directions is 90°±10°), and the split air inlet flow flows out from the side along the different directions of the heat dissipation flow channel. The air cooling heat dissipation mechanism 100 in the present application can use the same fan component to simultaneously dissipate heat for two power modules (such as the optical fiber disc module and the pump source module), which has high heat dissipation efficiency and saves the number of heat dissipation modules, making the overall volume compact. At the same time, the vertical air supply mode shortens the air flow stroke, solves the problem of temperature concentration, and improves the heat dissipation efficiency.

[0054] Referring to Figure 5As shown in the embodiment of the application, the air-cooled heat dissipation mechanism for the laser welding machine adopts the air-cooled heat dissipation mechanism 100 in any of the above embodiments, and comprises a connecting base 36, a pump source support vertical plate 37, a pump source assembly 3a, a fan assembly 2, a wind guide 7, an upper wind baffle 38, a lower wind baffle 39, a front support vertical plate 40, a rear support vertical plate 41, a fiber disc assembly 1a, and a fiber disc fixing plate 42.

[0055] As shown in the embodiment of the application, the air-cooled heat dissipation mechanism for the laser welding machine adopts the air-cooled heat dissipation mechanism 100 in any of the above embodiments, and comprises a connecting base 36, a pump source support vertical plate 37, a pump source assembly 3a, a fan assembly 2, a wind guide 7, an upper wind baffle 38, a lower wind baffle 39, a front support vertical plate 40, a rear support vertical plate 41, a fiber disc assembly 1a, and a fiber disc fixing plate 42. Figure 6 As shown in the embodiment of the application, the air-cooled heat dissipation mechanism for the laser welding machine adopts the air-cooled heat dissipation mechanism 100 in any of the above embodiments, and comprises a connecting base 36, a pump source support vertical plate 37, a pump source assembly 3a, a fan assembly 2, a wind guide 7, an upper wind baffle 38, a lower wind baffle 39, a front support vertical plate 40, a rear support vertical plate 41, a fiber disc assembly 1a, and a fiber disc fixing plate 42.

[0056] As shown in the embodiment of the application, the air-cooled heat dissipation mechanism for the laser welding machine adopts the air-cooled heat dissipation mechanism 100 in any of the above embodiments, and comprises a connecting base 36, a pump source support vertical plate 37, a pump source assembly 3a, a fan assembly 2, a wind guide 7, an upper wind baffle 38, a lower wind baffle 39, a front support vertical plate 40, a rear support vertical plate 41, a fiber disc assembly 1a, and a fiber disc fixing plate 42. Figure 7 As shown in the embodiment of the application, the air-cooled heat dissipation mechanism for the laser welding machine adopts the air-cooled heat dissipation mechanism 100 in any of the above embodiments, and comprises a connecting base 36, a pump source support vertical plate 37, a pump source assembly 3a, a fan assembly 2, a wind guide 7, an upper wind baffle 38, a lower wind baffle 39, a front support vertical plate 40, a rear support vertical plate 41, a fiber disc assembly 1a, and a fiber disc fixing plate 42.

[0057] The pump source assembly 3a is fixed on the connecting base 36 by the pump support stand 37. The connecting base 36 is provided with mounting holes to fix (for example, by bolts) the entire air cooling mechanism 100 in the mounting space inside the laser welding machine. The fiber disc assembly 1a, the fan assembly 2 and the pump source assembly 3a are arranged in sequence along the air inflow direction a, and the fan assembly 2 is used to make the air flow from the outside to the pump source assembly 3a through the fiber disc assembly 1a, so as to simultaneously achieve heat dissipation of the fiber disc assembly 1a and the pump source assembly 3a. The fan assembly 2 and the pump source assembly 3a form a heat exchange cavity 4, and the heat exchange cavity 4 includes at least two heat dissipation flow channels 5 extending in different directions, and is also used to make the air inflow be divided into different heat dissipation flow channels 5, and the air inflow direction a and the air outflow direction b of the air outlet 6 of the heat dissipation flow channel 5 are substantially perpendicular. In the embodiment, the substantially perpendicular means that the included angle between the two directions is not necessarily 90°, and there can be a certain deviation, for example, the included angle between the two directions is 90°±10°.

[0058] In the embodiment, as shown in Figure 5 The heat exchange cavity 4 includes two heat dissipation flow channels 5 extending in opposite directions, the heat dissipation air flow passing through the fan assembly 2 flows to the pump source assembly 3a (the second power assembly 3), and then flows out from the two sides of the pump source assembly 3a. In the embodiment, the air flow directly blows on the pump source module with high heat and high concentration, and then flows out from the two sides, so as to shorten the air flow stroke, so that the pump source module does not generate temperature concentration, avoids large temperature difference on different sides, improves the heat dissipation efficiency of the pump source module, makes the light emission of the welding machine more stable, and improves the welding performance.

[0059] In other embodiments of the present application, the heat dissipation flow channel 5 can also be more than three, for example, three, four, five, six, seven, eight and the like, according to the setting position, number and direction of the heat dissipation fin 8 and the heat dissipation needs of the pump source assembly 3a. At this time, at least two of the heat dissipation flow channels 5 extend in different directions, and the extension direction of the heat dissipation flow channel 5 can be set to two, three, four, five, six, seven, eight and the like according to needs, and all can realize shortening of the air flow stroke, which will not be described in detail here.

[0060] In the present embodiment, the heat exchange cavity 4 comprises a cavity surrounded by the air guide 7, the upper air baffle 38, the lower air baffle 39, the front support vertical plate 40 and the rear support vertical plate 41. The heat exchange cavity 4 is provided with the air guide 7 and at least two groups of heat dissipation fins 8, which are in close contact with the pump source assembly 3a (the second power assembly 3). The air guide 7 is provided with at least two groups of air baffle plates 9 on one side of the heat dissipation fins 8, which are inclined towards the bottom of the corresponding group of heat dissipation fins 8, and the end of each group of air baffle plates 9 extends to the root of the corresponding group of heat dissipation fins 8, and the air guide gap 10 is provided at the end. See Figure 5 and Figure 8 The structure of the air guide 7 is shown in the structure diagram, which comprises a frame 13, and at least two air guide inlets 14 are provided on the frame 13, and each air guide inlet 14 is provided with an air baffle plate 9 on one side of the pump source assembly 3a (the second power assembly 3), which is gradually inclined to the root of the corresponding group of heat dissipation fins 8 from the frame 13 to the root of the corresponding group of heat dissipation fins 8, and the end of the air baffle plate 9 extends to the root of the corresponding group of heat dissipation fins 8, and the air guide gap 10 is provided at the end. That is, the air baffle plates 9 in each group of air baffle plates 9 are in the shape of converging towards the end, and the cross-sectional area of the cooling air passage formed by the air baffle plate 9 gradually decreases towards the end. Each heat dissipation flow channel 5 comprises a group of heat dissipation fins 8 and a corresponding group of air baffle plates 9, and the air guide gap 10 communicates with the air outlet 6. In the present embodiment, the vertical air supply mode facing the pump source assembly 3a can effectively shorten the airflow path and solve the problem of temperature concentration, and the air baffle plate structure has the following technical effects: first, because the root of the heat dissipation fin directly contacts the heat sink or mounting structure of the chip, the heat is higher than that at the top of the fin, so the air baffle plate structure can effectively guide the airflow passing through the fan assembly 2 to the root of the heat dissipation fin, thereby improving the heat dissipation efficiency; second, the air baffle plate structure can block and separate the airflow into two or more paths, thereby solving the vortex problem caused by the vertical air supply encountering the pump source module, reducing the air noise, improving the heat dissipation efficiency, and solving the problem of air rotation and reducing the heat dissipation utilization rate; third, the air baffle plate structure has the airflow converging effect due to the inclined guiding structure towards the bottom of the fin, and the pump source module has concentrated heat dissipation, so the converged airflow can directly reach the root of the fin, thereby improving the heat dissipation efficiency.

[0061] As Figure 5In the embodiment shown in the figure, two groups of heat dissipation fins 8 are provided, two air guide inlets 14 are provided on the frame 13, the front support vertical plate 40 and the rear support vertical plate 41 are provided with air outlets 6, each heat dissipation flow channel 5 includes a group of heat dissipation fins 8, a corresponding air guide inlet 14 and a corresponding group of air guide plates 9, and the air guide gap 10 is connected to the air outlet 6. In some other embodiments, the number of groups of heat dissipation fins 8, the number of air guide inlets 14, and the number of groups of air guide plates 9 can also be set to more than 3, such as 3, 4, 5, 6, 7, 8, etc., all of which can achieve the above technical effects, which will not be described in detail here.

[0062] In some embodiments of the present application, a plurality of small holes are provided on the air guide plate 9, so that the air flows on both sides separated by the air guide plate structure are communicated, so that the temperature of the heat dissipation fins is more uniform, and the temperature difference is further reduced.

[0063] In some embodiments of the present application, a plurality of small holes are provided on the heat dissipation fins 8, which function is to create micro-channels between the heat dissipation fins 8, so that the air flow between each fin is communicated, thereby increasing the flow rate in the local area of the fin, achieving accelerated heat exchange.

[0064] In the embodiments of the present application, considering that the heat dissipation air flow first passes through the optical fiber disc assembly 1a and then dissipates heat to the pump source assembly 3a, although the air flow passing through the optical fiber disc assembly is heated, the temperature rise of the air flow passing through the optical fiber disc assembly is not much, so it can simultaneously achieve heat dissipation to the pump source module, in order to further optimize the heat dissipation performance, the air inlet position of the optical fiber disc assembly 1a at the air inlet of the upstream air flow is also optimized in some embodiments of the present application. Specifically, see Figure 2 and Figure 5As shown in the middle, in some embodiments, the fiber disc assembly 1a (first power assembly 1) is provided with a hollow first air inlet area 11 in the middle area of the side surface perpendicular to the air inlet flow direction a, and the fiber disc assembly 1a (first power assembly 1) is provided with a second air inlet area 12 in the edge area of the side surface perpendicular to the air inlet flow direction a, and the air inlet amount of the second air inlet area 12 is not less than that of the first air inlet area 11. Such design divides the air inlet channel of the fiber disc assembly 1a into two parts: the first air inlet area 11 at the hollow area 50 and the second air inlet area 12 in the edge area of the side surface. First, the air inlet channels of the two parts are set at the same time, which increases the air inlet amount and improves the heat dissipation effect. Second, the air flow directly passes through the hollow area 50 to dissipate heat for the fiber disc assembly, the air flow stroke is short, the heat dissipation efficiency is high, and the temperature of this part of air flow does not increase much. Third, the air inlet of the second air inlet area 12 in the edge area of the side surface is mainly used to dissipate heat for the pump source assembly 3a downstream, since the air flow of the hollow area 50 mainly takes away the heat of the fiber disc assembly 1a, the air flow of the second air inlet area 12 in the edge area of the side surface is cold wind, even after mixing with the hot air flow whose temperature does not increase much after flowing through the hollow area 50, the temperature of the mixed air flow is lowered as a whole, thus, the heat dissipation efficiency for the downstream pump source module can be improved.

[0065] Further, in some embodiments, in order to balance the heat dissipation of the fiber disc and to reduce the temperature of the airflow through the fiber disc as much as possible, the ratio of the air intake amount of the first air intake area 11 at the hollow area 50 to the air intake amount of the second air intake area 12 at the edge area of the side surface ranges from [2 / 5, 2 / 3]. For example, in some embodiments, the ratio of the air intake amount of the first air intake area 11 to the air intake amount of the second air intake area 12 is 2:3, 40% of the total air intake amount is the cooling air amount that is cooled after being absorbed by the middle area and the hollow area 50 of the cover plate 43 of the fiber disc to absorb the heat of the fiber disc assembly 1a, and 60% of the total air intake amount is the cooling air amount that is cooled after entering the side air inlet between the fiber disc assembly 1a and the fiber disc fixing plate 42, and then is blown to the pump source assembly 3a by the fan assembly 2 to cool the pump source assembly 3a. For example, in some embodiments, the ratio of the air intake amount of the first air intake area 11 at the hollow area 50 to the air intake amount of the second air intake area 12 at the edge area of the side surface is 2:5, 2 / 7 of the total air intake amount is the cooling air amount that is cooled after being absorbed by the middle area and the hollow area 50 of the cover plate 43 of the fiber disc to absorb the heat of the fiber disc assembly 1a, and 5 / 7 of the total air intake amount is the cooling air amount that is cooled after entering the side air inlet between the fiber disc assembly 1a and the fiber disc fixing plate 42, and then is blown to the pump source assembly 3a by the fan assembly 2 to cool the pump source assembly 3a. For another example, in some embodiments, the air intake amount of the first air intake area 11 and the air intake amount of the second air intake area 12 account for one-third and two-thirds of the total air intake amount respectively, one-third of the air is heated by the cover plate 43 and the hollow area 50 of the fiber disc, and two-thirds of the air is cooled after entering the side air inlet between the fiber disc assembly 1a and the fiber disc fixing plate 42, so this part of the air is cool air, which can effectively cool the pump source assembly 3a, while balancing the heat dissipation of the fiber disc assembly 1a, and the two share a set of cooling fans, reducing the number of parts and volume.

[0066] As Figure 5As shown in FIG. 1, in the present embodiment, the fiber disc assembly 1a is fixed on the fiber disc fixing plate 42, the fiber disc fixing plate 42 is provided with a fiber disc mounting groove 52 on the side facing the fiber disc assembly 1a, the fiber disc assembly 1a is fixed in the fiber disc mounting groove 52, and an air inlet gap is provided between the edge of the fiber disc assembly 1a and the groove wall of the fiber disc mounting groove 52. The bottom of the fiber disc mounting groove 52 is provided with a plurality of third air inlets 53 in a hollow manner, and the third air inlets 53 are used to fixedly install the fans in the fan assembly 2. The air inlets of the fiber disc assembly 1a include two parts: first, the second air inlets 48 and the hollow area 50 of the middle part of the fiber disc assembly 1a, and the heat dissipation airflow can pass through the second air inlets 48 and the hollow area 50 in sequence, thereby dissipating heat from the fiber disc; in addition, the air inlet gap, i.e., the second air inlet area, is provided between the side edge of the fiber disc assembly 1a and the groove wall of the fiber disc mounting groove 52. Specifically, in some embodiments, one, two, three or four side edges of the fiber disc assembly 1a can be provided with the second air inlet area. As shown in FIG. 1, the fiber disc assembly 1a is provided with the second air inlet area 12 on the front and rear side edges along the side perpendicular to the air inlet airflow direction a, and the upper and lower side edges are used to fixedly install the fiber disc assembly 1a. The other examples of the air inlet area are not described one by one. Figure 5

[0067] In the present application, the fan assembly 2 includes at least one fan, and the blowing direction of the fan is substantially perpendicular to the heat dissipation surface of the pump source assembly 3a (the second power assembly 3) facing the side of the fan assembly 2. In the present application, substantially perpendicular means that the included angle between the blowing direction of the fan and the heat dissipation surface is 90°±5°. In the present embodiment, the vertical air supply mode facing the pump source assembly 3a, the blowing angle of the fan can be 90°±5°, and the fan is slightly inclined to facilitate the air to flow towards the pump source, the airflow is more concentrated, and the heat dissipation effect is better. However, if the inclination angle is too large, the overall volume of the module will be large, and the space compactness cannot be considered, so the angle range can consider the heat dissipation effect and the volume compactness.

[0068] In some embodiments of the present application, the fan assembly 2 includes a plurality of fans, and the fans are divided into at least two groups, each group of fans aligning a heat dissipation flow channel 5, or the fans are evenly arranged into multiple groups and blow towards each heat dissipation flow channel 5.

[0069] For example, in some embodiments, as shown in FIG. 1, the fan assembly 2 includes two fans, and the two fans are arranged in two groups, each group of fans aligning a heat dissipation flow channel 5. Figure 9 ​As shown, the fan assembly 2 includes multiple fans, which are divided into two groups. Each group of fans is aligned with a corresponding air inlet 14 of a heat dissipation channel 5. In this configuration, the two groups of fans are directly facing the air inlets 14 on the air guide plate 7 without obstruction, resulting in a larger airflow. However, the overall size is slightly larger, but it is still more compact than traditional heat dissipation structures.

[0070] For example, in other embodiments, such as Figure 10 As shown, the fans are divided into three evenly arranged groups. Each heat dissipation channel 5 has a corresponding air inlet 14 with a set of fans. The middle set of fans blows at least partially onto the connecting reinforcing rib 15 between the two air inlets. In this method, the alignment of the air inlets 14 on the air guide plate 7 with the middle fans is off. That is, the airflow of the two central fans is partially blocked by the connecting reinforcing rib 15 in the center of the air collecting plate 9. Although some airflow is blocked, it can still meet the heat dissipation requirements of the pump source component 3a. At the same time, its arrangement is more compact, the size of the air collecting plate is smaller, and the overall structure is more compact.

[0071] In some embodiments of this application, see Figure 11 As shown, the air-cooled 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 power component 1 and the second power component 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, from the perspective of the cooling airflow direction, the fiber optic disk assembly 1a is located at the upstream, the pump source assembly 3a is located in the middle, and the heat sink 34 of the circuit board of the main control unit 29 is located in the downstream region of the heat dissipation channel 5. Although the airflow flowing through the fiber optic disk assembly 1a and the pump source assembly 3a has been heated, the heat generated on the circuit board of the main control unit 29 is much lower than that of the first two modules, and the circuit board itself has strong heat resistance. Therefore, it is designed to be located in the latter half of the cooling airflow direction, which can also achieve good heat dissipation. In this embodiment, the cooling airflow path can simultaneously cool the first power component 1 (e.g., fiber optic disk component 1a), the second power component 3 (e.g., pump source component 3a), and the third power component 54 (e.g., main control unit 29), taking into account the heat generation, heat resistance, and heat dissipation requirements of each module. A single cooling fan can dissipate heat from multiple main heat-generating modules, resulting in high heat dissipation efficiency, reduced component count, and a compact structure. Furthermore, since 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 can be placed on the heat sink 34 or on the side closer to the pump source component 3a, and electrically connected to the main control unit 29's circuit board. This allows the main control unit 29 to monitor and control any abnormal heat dissipation behavior of the pump source component 3a.

[0072] Further, in some embodiments of the present application, temperature sensors are arranged in the first power component 1 (e.g. the fiber disc component 1a), the second power component 3 (e.g. the pump source component 3a) and the third power component 54 (e.g. the main control unit 29). In the air-cooling heat dissipation mechanism 100 in the present embodiment, temperature sensors (e.g. thermistors) are arranged in the three power components, which can effectively monitor the temperature changes of the various modules of the system. According to the monitored temperature, control commands such as stopping work and controlling the rotating speed / power of the fan component 2 can be taken to improve the safety and heat dissipation effect.

[0073] The air-cooling heat dissipation mechanism for the laser welding machine provided in the embodiments of the present application not only has a compact overall volume, but also can simultaneously realize the heat dissipation of the fiber disc module and the pump source module by using the same set of fan modules. Moreover, the air-cooling heat dissipation mechanism has high heat dissipation efficiency, vertically sends air, and solves the problem of temperature concentration by shortening the air flow stroke of the heat dissipation flow channels flowing out of the two sides of the pump source module, thereby improving the heat dissipation efficiency, making the light emission of the welding machine more stable, and improving the welding performance. In addition, the air inlet channel is provided with two air inlet areas at the same time, which increases the air inlet amount and improves the heat dissipation effect. The structural design of the air guide plate, the air gathering plate and the heat dissipation fins not only improves the heat dissipation efficiency, but also gathers air flow to improve air pressure and reduce air noise. See Figure 12 and Figure 13As shown in the middle of the application, a laser welding machine 200 is also provided, which includes a cabinet 16, the cabinet 16 includes 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 application, the left side panel 21 and the top panel 19 are in an L-shaped integrated design (forming an L-shaped side panel), and the rear panel 18 and the bottom panel 20 can also be in an L-shaped integrated design (forming an L-shaped main frame), which facilitates the assembly of the entire cabinet 16. The cabinet 16 is provided with a partition mounting plate 23 to divide the cabinet 16 into a first mounting space 24 on the left side and a second mounting space 25 on the right side. The first mounting space 24 is provided with the air-cooled heat dissipation mechanism 100 according to any of the above embodiments, wherein the first power component 1 is an optical fiber disc assembly 1a, and the second power component 3 is a pump source assembly 3a. A first air inlet 26 is formed in the middle area of the left side panel 21, and the optical fiber disc assembly 1a is close to the first air inlet 26. When cooling the optical module in the first mounting space 24, the external cooling air flow enters from the first air inlet 26, passes through the second air inlet 48, the hollowed-out area 50 and the third air inlet 53 in turn, flows into the fan assembly 2, and the cooling air flow sent out from the fan assembly 2 passes through the air guide inlet 14, is divided, and then vertically blows to the heat dissipation fins 8 on the cooling surface of the pump source assembly 3a through the heat dissipation flow channel 5, and then flows out from the air outlet 6. The pump source assembly 3a is arranged on the partition mounting plate 23. The air outlet 6 of the heat dissipation flow channel 5 is respectively towards the front panel 17 and the rear panel 18, and air outlet mesh holes 32 are arranged on the front panel 17 and the rear panel 18 corresponding to the positions of the air outlet 6.

[0074] The second mounting space 25 is provided with an electrical unit 27, and an auxiliary air inlet 30 is formed in the right side panel 22, the electrical unit 27 includes a heat dissipation fan assembly 28, and the front panel 17 and / or the rear panel 18 is provided with an auxiliary air outlet mesh 31. When cooling the electrical unit 27 in the second mounting space 25, the external cooling air flow enters the second mounting space 25 from the auxiliary air inlet 30, and is blown out from the auxiliary air outlet mesh 31 through the heat dissipation fan assembly 28 to cool the electrical unit.

[0075] The laser welding machine 200 provided in the embodiment adopts the structure design of photoelectric separation, the optical module (including the optical fiber disc assembly 1a and the pump source assembly 3a) and the electrical unit 27 (including the main control unit and the like) are distributed in the cavities of the two installation spaces of the cabinet 16, are separated by the isolation mounting plate 23 in the middle, form two air ducts to separate heat dissipation, and the heat dissipation channel of the optical module adopts the air duct design of side air inlet and front and rear air outlet, the two cavities where the optical module and the electrical unit 27 are located are respectively on the two sides of the transverse direction of the cabinet 16, the air inlets of the two air ducts are respectively arranged on the two sides of the transverse direction of the cabinet 16, the air outlets are respectively on the front and rear sides of the cabinet 16, and the air current flowing through the air inlet on the side of the optical module is discharged to the front and rear sides of the cabinet 16 after the radiator of the optical module. The structure design of photoelectric separation and two air ducts to separate heat dissipation in the embodiment distributes the optical module and the electrical unit in the two cavities of the cabinet 16 and dissipates heat respectively, improves the heat dissipation efficiency, and the sealing plates (i.e., the left side plate 21 and the right side plate 22) on the two sides of the cabinet 16 can be opened respectively, and the optical module and the electrical unit can be repaired separately. Secondly, the transverse layout of the two installation spaces and the heat dissipation air duct is beneficial to reducing the size of the welding machine, and the air inlet on the two sides of the machine body and the air outlet in front and rear directions are beneficial to shortening the heat dissipation distance, reducing heat concentration, improving the heat dissipation efficiency, and fully utilizing the positions on the two sides of the cabinet and the positions of the shell in front and rear directions of the cabinet to optimize the position layout of various components of the welding machine.

[0076] In some embodiments of the present application, the electrical unit 27 further includes a main control unit 29 and a heat sink 34 arranged on the main control unit. The main control unit 29 controls the human-computer interaction, operation processing, laser control, wire feeding, handheld welding gun head, heat dissipation control, safety protection and the like of the entire laser welding machine. The heat sink 34 is used for cooling the main control unit 29. An installation area 33 corresponding to the downstream of the heat dissipation flow channel 5 is arranged on the isolation mounting plate 23, and the installation area 33 is recessed towards the heat dissipation flow 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 (for example, in the vicinity of the air outlet 6) of the heat dissipation flow channel 5. In the embodiment, the main control unit 29 is cooled by the heat dissipation channel of the optical module, and the main control unit 29 is arranged in the downstream of the heat dissipation flow channel 5 compared with the pump source assembly 3a, so that the circuit board of the main control unit 29 can also be cooled after the air current passes through the optical fiber disc assembly 1a and the pump source assembly 3a. Specifically, refer to Figure 14As shown in the figure, the main control unit 29 which needs to be cooled is designed with a special cooling mode, for example, the MOS and power resistor on the main control unit, embedded in the mounting area 33 in the recess structure on the isolation mounting plate 23, the cooling fins 34 of the circuit board are located in the cooling flow channel 5 of the pump source assembly 3a, and other modules of the electrical unit 27 can be cooled by the cooling channel formed by the auxiliary air inlet 30, the cooling fan assembly 28, and the auxiliary air outlet mesh 31 in the second mounting space 25. In the cooling mode of the present embodiment, from the air inlet direction a of the cooling channel of the pump source module, the fiber disc assembly 1a is located at the most upstream, the pump source assembly 3a is located at the middle, and the cooling fins 34 of the main control unit 29 are located downstream of the cooling flow channel 5 of the pump source assembly 3a. Although the air flow through the fiber disc assembly 1a and the pump source assembly 3a has been heated, the power resistor and MOS tube on the circuit board only generate 50-80W of heat, which is much lower than the heat generated by the first two modules, and the circuit board itself has strong heat resistance, so the design in the second half of the air duct can also achieve good cooling of it. That is, the fiber disc assembly 1a, the pump source assembly 3a, and the cooling fins 34 of the circuit board of the main control unit 29 are arranged in sequence on the same cooling flow channel, taking into account the heat generation, heat resistance, and cooling requirements of each module. With the same set of cooling fans, multiple main heat generating modules can be cooled, the cooling efficiency is high, the number of parts is reduced, and the structure is compact. In particular, the circuit board is not entirely arranged in the cooling channel of the pump source, but only uses its cooling fins to cool with the help of the cooling flow channel, and the circuit board is located in another side space. Not only is the structure compact, but it also prevents the heat generated by the pump source assembly 3a and other modules from affecting the circuit board, making the entire welding machine work more stably. In addition, it makes maintenance more convenient, and can separately repair the circuit board and the pump source module, and complementary effects.

[0077] In some embodiments of the present application, the laser welding machine 200 comprises the air-cooled heat dissipation mechanism 100 as described in any of the above embodiments, wherein the first power component 1 is a fiber disc component la, and the second power component 3 is a pump source component 3a. A control unit 29 and a cooling fin 34 disposed on the control unit are further included, the cooling fin 34 is used to cool the control unit 29, and the cooling fin 34 is located in the downstream area of the heat dissipation flow channel 5. The cabinet 16 of the laser welding machine 200 is provided with an isolation mounting plate 23 to divide the inside of the cabinet 16 into a first mounting space 24 and a second mounting space 25, and the air-cooled heat dissipation mechanism 100 is mounted in the first mounting space 24. An installation area 33 corresponding to the downstream of the heat dissipation flow channel 5 is provided on the isolation mounting plate 23, 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 assembly 28 are further provided in the second mounting space 25. The laser controller 56 is mainly used to drive the optical module (such as the fiber disc component and the pump source component). The main power supply 57 provides power support for the entire welding machine, ensuring the normal operation of the core components such as the laser (fiber disc component and pump source component), control system (main control unit), etc. The second mounting space 25 is provided with an auxiliary air inlet 30 and an auxiliary air outlet mesh 31 on the cabinet 16 corresponding thereto. The cooling fan assembly 28 is used to make the external cooling air enter the second mounting space 25 from the auxiliary air inlet 30 and flow out of the second mounting space from the auxiliary air outlet mesh 31. In this embodiment, the optical module and the electrical module are distributed in the two cavities (i.e. the first mounting space 24 and the second mounting space 25) of the cabinet 16, and are cooled separately to improve the cooling efficiency. In addition, the air-cooled heat dissipation mechanism 100 of the optical module can realize cooling of the fiber disc component la, the pump source component 3a, and the main control unit 29 at the same time on the cooling air flow path, taking into account the heat generation, heat resistance, and cooling requirements of each module. With the same set of cooling fan assembly, the cooling of multiple main heat generating modules can be realized, the cooling efficiency is high, the number of parts is reduced, and the structure is compact. The cooling channel provided with the auxiliary air inlet 30, the cooling fan assembly 28, and the auxiliary air outlet mesh 31 in the electrical module can cool the electrical unit 27, and also reduce the heat influence of the optical module on the electrical unit 27, so that the entire welding machine works more stably.

[0078] Further, in some embodiments of the present application, temperature sensors (such as thermistors) are provided in the fiber disc component la, the pump source component 3a, the control unit 29, and the second mounting space 25, which facilitates the main control unit 29 to monitor and control the cooling of the entire heat dissipation mechanism.

[0079] In some embodiments of the present application, the outer periphery of the first air inlet 26 is provided with a support 35 for coiling cables. In this embodiment, the central area of the support 35 for coiling cables on the side panel is designed with an air inlet, meeting the air volume requirement of the optical module. In this embodiment, the air inlet of the optical module unit of the welding machine is arranged on the side panel (i.e. the left side panel) on the side of the fiber disc assembly air inlet channel, specifically, in the central area of the support 35 for coiling cables, which is the air inlet, and the surrounding is a support for coiling optical cables, i.e. meeting the requirements of coiling cables, and also meeting 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 fiber disc assembly 1a, so that the heat dissipation flow path is shorter, and the heat dissipation effect is improved. In addition, the central area of the support 35 is provided with an air inlet, so that the optical cable and the like do not interfere with the air inlet during the operation or movement of the welding machine, fully utilizes the space on the side, optimizes the position layout, and the central area of the support 35 is provided with an air inlet, so that the overall support is larger, the radius of the coiled optical cable is larger, and the coiling is easier and more stable.

[0080] In some embodiments of the present application, temperature sensors (such as thermistors, which can monitor the temperature of power heating components in real time) are arranged in the fiber disc assembly 1a, the pump source assembly 3a and the electrical unit 27, respectively, to monitor the temperature of the entire system. In this embodiment, the welding machine can effectively monitor the temperature changes of each module of the system, and according to the monitored temperature, take control commands such as stopping working, to prevent the temperature from being too high, causing equipment damage or safety accidents, and improve the stability and safety of the equipment.

[0081] The embodiments of the present application are described in detail above, and the principles and implementation modes of the present application are described by applying specific examples; the above description of the embodiments is only used to help understand the method of the present application and its core idea; at the same time, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed, and the above description of the present application should not be understood as a limitation.

Claims

1. A wind cooling heat dissipation mechanism (100) for a laser welding machine, characterized in that, The heat dissipation device comprises a first power assembly (1), a fan assembly (2) and a second power assembly (3) arranged in sequence along an air inflow direction (a), the second power assembly (3) has a higher heat generation than the first power assembly (1), and the fan assembly (2) is used for guiding air flow from outside to the first power assembly (1) and then to the second power assembly (3) to dissipate heat of the first power assembly (1) and the second power assembly (3); The heat dissipation device further comprises a heat exchange cavity (4) arranged between the fan assembly (2) and the second power assembly (3), the heat exchange cavity (4) comprises at least two heat dissipation flow channels (5) extending in different directions, and the heat exchange cavity (4) is further used for guiding air inflow to different heat dissipation flow channels (5), the air inflow direction (a) and an air outflow direction (b) of an air outlet (6) of the heat dissipation flow channel (5) are substantially perpendicular; The heat exchange cavity (4) is provided with a wind guide (7) and at least two groups of heat dissipation fins (8), the heat dissipation fins (8) are close to the second power assembly (3), the wind guide (7) is provided with at least two groups of wind guide plates (9) on a side facing the heat dissipation fins (8), an end of each group of wind guide plates (9) extends to a root of a corresponding group of heat dissipation fins (8), and a wind guide gap (10) is arranged at the end; Each heat dissipation flow channel (5) comprises a group of heat dissipation fins (8) and a corresponding group of wind guide plates (9), and the wind guide gap (10) is communicated with the air outlet (6); The first power assembly (1) is provided with a hollow first air inflow area (11) in a middle region of a side surface perpendicular to the air inflow direction (a), and is provided with a second air inflow area (12) in an edge region of the side surface perpendicular to the air inflow direction (a); an air inflow amount of the second air inflow area (12) is not less than that of the first air inflow area (11).

2. The air-cooled heat sink (100) according to claim 1, characterized in that A ratio of the air inflow amount of the first air inflow area (11) to that of the second air inflow area (12) ranges from 2 / 5 to 2 / 3.

3. The air-cooled heat sink (100) as claimed in claim 1, wherein, A plurality of small holes are arranged on the wind guide plates (9) and / or the heat dissipation fins (8).

4. The air-cooled heat sink (100) as claimed in claim 1, wherein, The fan assembly (2) comprises at least one fan, a blowing direction of the fan is substantially perpendicular to a heat dissipation surface of a side of the second power assembly (3) facing the fan assembly (2), and an included angle between the blowing direction of the fan and the heat dissipation surface is 90°±5°.

5. The air-cooled heat sink (100) as claimed in claim 1, wherein, The fan assembly (2) comprises a plurality of fans, the fans are divided into at least two groups, each group of fans is aligned with a heat dissipation flow channel (5), or the fans are divided into multiple groups arranged uniformly and blow to each heat dissipation flow channel (5).

6. The air-cooled heat sink (100) as claimed in claim 1, wherein, The heat exchange cavity (4) comprises two heat dissipation flow channels (5) extending in opposite directions, heat dissipation air flow passing through the fan assembly (2) flows to the second power assembly (3) and then flows out from two sides of the second power assembly (3) through the two heat dissipation flow channels (5). Two groups of heat dissipation fins (8) are arranged in the heat exchange cavity (4), the air guide member (7) comprises a frame (13), two air guide inlets (14) are arranged on the frame (13), and a wind gathering plate (9) is arranged on one side of each air guide inlet (14) and faces the second power component (3); Each heat dissipation flow channel (5) comprises a group of heat dissipation fins (8), a corresponding air guide inlet (14) and a corresponding group of wind gathering plates (9); and the air guide gap (10) is communicated with the air outlet (6).

7. The air-cooled heat sink mechanism (100) according to claim 6, characterized by The fan assembly (2) comprises a plurality of fans, the fans are divided into two groups, each group of fans is aligned with the corresponding air guide inlet (14) of one heat dissipation flow channel (5), or the fans are divided into three groups arranged uniformly, and one group of fans is arranged on the corresponding air guide inlet (14) of each heat dissipation flow channel (5), and at least part of the middle group of fans blows towards the connecting reinforcing rib (15) between the two air guide inlets.

8. The air-cooled heat sink (100) according to any one of claims 1 to 7, characterized in that The third power component (54) and the heat dissipation fin (34) are further included, the third power component (54) has a heat generation smaller than that of the first power component (1) and the second power component (3), the heat dissipation fin (34) is used for cooling the third power component (54), and the heat dissipation fin (34) is located in a downstream region of the heat dissipation flow channel (5).

9. The air-cooled heat sink mechanism (100) according to claim 8, characterized by, At least one of the first power component (1), the second power component (3), the third power component (54) and the heat dissipation fin (34) is provided with a temperature sensor.

10. A laser welding machine (200) characterized by, The air cooling heat dissipation mechanism (100) described in any one of claims 1-7 is included, wherein the first power component (1) is an optical fiber disc component (1a), and the second power component (3) is a pump source component (3a). The main control unit (29) and the heat dissipation fin (34) arranged on the main control unit are further included, the heat dissipation fin (34) is used for cooling the main control unit (29), and the heat dissipation fin (34) is located in a downstream region of the heat dissipation flow channel (5).

11. A laser welding machine (200) comprising a cabinet (16) including 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, The isolation mounting plate (23) is arranged in the cabinet (16) to divide the cabinet (16) into the first mounting space (24) on the left side and the second mounting space (25) on the right side; The air cooling heat dissipation mechanism (100) described in any one of claims 1-9 is arranged in the first mounting space (24), wherein the first power component (1) is an optical fiber disc component (1a), the second power component (3) is a pump source component (3a), the first air inlet (26) is formed in the left side plate (21), the optical fiber disc component (1a) is close to the first air inlet (26), the pump source component (3a) is arranged on the isolation mounting plate (23), the air outlets (6) of the heat dissipation flow channels (5) respectively face the front panel (17) and the rear panel (18), and the front panel and the rear panel are both provided with air outlet mesh holes (32). An electrical unit (27) is arranged in the second mounting space (25), an auxiliary air inlet (30) is formed in the right side plate (22), the electrical unit (27) comprises a heat dissipation fan assembly (28), and the front panel (17) and / or the rear panel (18) is provided with an auxiliary air outlet mesh (31).

12. A laser welding machine (200) as claimed in claim 11, characterized in that The electrical unit (27) further comprises a main control unit (29) and a cooling fin (34) arranged on the main control unit, the cooling fin (34) is used for cooling the main control unit (29), a mounting area (33) corresponding to the downstream of the heat dissipation flow channel (5) is arranged on the isolation mounting plate (23), the main control unit (29) is embedded in the mounting area (33), and the cooling fin (34) is located in the heat dissipation flow channel (5).

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