Welding tool and laser welding equipment

Abstract

The utility model relates to a welding tool and laser welding equipment. The welding tool comprises a main body and a welding rod, wherein a through welding seam avoiding channel is formed in the main body; and the first ventilation piece is installed on the main body, a first channel is defined by the first ventilation piece and the main body, and the first channel communicates with the welding seam avoiding channel and is used for inputting oxygen isolation gas into the welding seam avoiding channel. According to the welding tool and the laser welding equipment, generation of welding oxides can be reduced, and the welding seam quality is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of welding, and particularly to a welding tooling and a laser welding device. Background Art

[0002] At present, the anode plate and the cathode plate are mostly welded together by laser welding to form the bipolar plate of the fuel cell. In addition, after the bipolar plate is welded, a subsequent surface plating process is required, and this process requires that there be no welding oxides on the surface of the bipolar plate. However, the bipolar plate formed by welding with the traditional welding tooling is prone to welding oxidation on its surface, resulting in the need to remove the welding oxides on the surface of the bipolar plate through an acid pickling process later, and the production cost is relatively high. Utility Model Content

[0003] Based on this, it is necessary to provide a welding tooling and a laser welding device that can reduce the generation of welding oxides for the above problems.

[0004] A welding tooling, the welding tooling includes: a main body, on which a through weld avoiding channel is opened; and, a first air vent member, installed on the main body, and defining a first channel with the main body, the first channel is communicated with the weld avoiding channel, and is used for inputting oxygen isolation gas into the weld avoiding channel.

[0005] In some embodiments, the first channel has a buffer cavity and an air outlet gap, and the air outlet gap is communicated between the buffer cavity and the weld avoiding channel.

[0006] In some embodiments, an installation channel is opened on the main body, and the installation channel is communicated with the weld avoiding channel; at least a part of the first air vent member is located in the installation channel, and defines the first channel with the wall surface of the installation channel.

[0007] In some embodiments, a wall surface of the installation channel along its width direction includes a first sub-wall surface and a second sub-wall surface, the second sub-wall surface is connected between the first sub-wall surface and the wall surface of the weld avoiding channel, the first sub-wall surface and the second sub-wall surface define a limiting space, the first air vent member is limited in the limiting space, and the first air vent member is arranged on the second sub-wall surface and defines the first channel with the second sub-wall surface.

[0008] In some of these embodiments, the second sub-wall surface includes a first section and a second section. The first section is connected between the second section and the first sub-wall surface, and the first section and the first sub-wall surface define the limiting space therebetween. The first air vent includes a mounting portion, a first air vent portion, and a second air vent portion. The mounting portion is disposed on the first section. The first air vent portion is connected between the mounting portion and the second air vent portion. A buffer cavity of the first channel is defined between the first surface of the first air vent portion facing the first section and the first section. An air outlet gap of the first channel is defined between the second surface of the second air vent portion facing the second section and the second section.

[0009] In some of these embodiments, the first surface is arranged parallel to the first section, and both the first surface and the first section are surface structures arranged horizontally; and / or, the second surface is arranged parallel to the second section, and both the second surface and the second section are surface structures arranged obliquely. In the through direction of the weld avoidance channel, the distance between the second section and the other wall surface of the installation channel arranged along its width direction gradually converges.

[0010] In some of these embodiments, in the through direction of the weld avoidance channel, the first surface is higher than the second surface.

[0011] In some of these embodiments, a first regulating valve is further included. The first regulating valve is installed on the first air vent and is used to regulate the flow rate of the oxygen isolation gas entering the first channel.

[0012] In some of these embodiments, an installation channel and an assembly groove are formed on the main body. The installation channel communicates between the assembly groove and the weld avoidance channel. A part of the first air vent is located in the installation channel and defines the first channel with the wall surface of the installation channel. The remaining part of the first air vent is located in the assembly groove. The welding tooling further includes a second air vent. The second air vent is disposed on the main body, and a second channel is provided in the second air vent. The second channel communicates with the assembly groove and is used to input oxygen isolation gas into the assembly groove.

[0013] In some of these embodiments, a second regulating valve is further included. The second regulating valve is installed on the second air vent and is used to regulate the flow rate of the oxygen isolation gas entering the second channel.

[0014] A laser welding device, the laser welding device having a welding position, the laser welding device including a laser welding apparatus, a first tooling and a second tooling, the second tooling being formed by the welding tooling structure described in any one of the embodiments, the first tooling and the second tooling cooperating and being used to clamp a workpiece at the welding position, and the laser welding apparatus being used to weld the workpiece located at the welding position.

[0015] For the above-mentioned welding tooling and laser welding device, by providing a first channel to input an oxygen isolation gas into the weld avoidance channel, the oxygen isolation gas can protect the weld area on the workpiece to isolate the outside air, reduce the risk of the weld area coming into contact with oxygen and being oxidized, thereby achieving the purpose of reducing the generation of welding oxides and improving the weld quality. Description of the Drawings

[0016] Figure 1 It is a top view of the laser welding apparatus in an embodiment of the present application;

[0017] Figure 2 It is a front view of the first welding tooling in an embodiment of the present application;

[0018] Figure 3 is Figure 2 the top view of the first welding tooling shown;

[0019] Figure 4 is Figure 3 the sectional view of the first welding tooling shown along the A-A direction;

[0020] Figure 5 is Figure 4 the enlarged schematic view of the partial structure B in the first welding tooling shown;

[0021] Figure 6 is Figure 5 the structural diagram of the main body in the enlarged schematic view of the partial structure B shown;

[0022] Figure 7 is Figure 5 the structural diagram of the first air venting member in the enlarged schematic view of the partial structure B shown;

[0023] Figure 8 is Figure 2 the bottom view of the first welding tooling shown;

[0024] Figure 9 It is a schematic diagram of the first weld track formed by welding using the first welding tooling;

[0025] Figure 10 It is a top view of the second welding tooling in an embodiment of the present application;

[0026] Figure 11 isFigure 10 A bottom view of the second welding tool is shown;

[0027] Figure 12 A schematic diagram of a second weld trajectory formed by welding using a second welding tool;

[0028] Figure 13 This is a schematic diagram of the total weld trajectory formed by welding using the first welding tool and the second welding tool.

[0029] Figure Number:

[0030] 1000, laser welding equipment; 2000, workpiece; 100, welding tool; 100a, first welding tool; 100b, second welding tool; 200, laser welding device; 300, tool transfer and fixing device; 10, main body; 20, first ventilation member; 30, first regulating valve; 40, second ventilation member; 50, second regulating valve; 11, weld avoidance channel; 12, installation channel; 121, first sub-wall; 122, second sub-wall; 122a, first section; 122b, second section; 13, limiting space; 14, assembly groove; 21, first channel; 211, cache cavity; 212, air outlet gap; 22, installation part; 23, first ventilation part; 231, first surface; 24, second ventilation part; 241, second surface. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0032] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0034] In this application, unless otherwise clearly defined and limited, terms such as "installed", "connected", "linked", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] In this application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or diagonally above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or diagonally below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0036] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it may be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0037] Please refer to Figures 1 to 5The present application provides a laser welding apparatus 1000 having a welding position. The laser welding apparatus 1000 includes a tool transfer and fixing device 300, a laser welding device 200, a first tool, and a second tool. The tool transfer and fixing device 300 is used to transfer and replace the first tool and the second tool during a tool change, and is used to fix the first tool and the second tool in the welding position after the tool change is completed, so that the first tool and the second tool can cooperate and be used to clamp the workpiece 2000 in the welding position. The laser welding device 200 is used to weld the workpiece 2000 in the welding position. The workpiece 2000 can be a bipolar plate, a battery cell, or other components, and the specific setting can be based on demand.

[0038] Typically, the first fixture is positioned below the workpiece 2000 during welding, while the second fixture is positioned above the workpiece 2000. A weld avoidance channel 11 is provided on the second fixture. The laser head of the laser welding device 200 moves along the weld avoidance channel 11, allowing the laser to pass through the weld avoidance channel 11 and irradiate the workpiece 2000, forming a weld track on the workpiece 2000, thereby completing the laser seal welding of the workpiece 2000.

[0039] As an example, the welding position of the laser welding equipment 1000 can be one or more, for example, there are multiple welding positions, and different welding positions form different weld trajectories. Therefore, the weld avoidance channels 11 on the second tooling of different welding positions have different shapes, but different welding positions can share the same first tooling.

[0040] Please refer again Figure 1 、 Figure 2 、 Figure 5 、 Figures 8 to 13 The present application also provides a welding tool 100, which is configured to form the aforementioned second tool. It is understood that the welding tool 100 can be one or more types, with different welding tools 100 forming different second tools, and different welding tools 100 having weld avoidance channels 11 of different shapes.

[0041] For example, taking two welding positions, namely the first welding position and the second welding position, the welding tool 100 located at the first welding position is defined as the first welding tool 100a, and the welding tool 100 located at the second welding position is defined as the second welding tool 100b. The shapes of the weld avoidance channels 11 of the first welding tool 100a and the second welding tool 100b are different.

[0042] During actual operation, the tool transfer and fixing device 300 fixes the first welding tool 100a and the second welding tool 100b at the first welding position and the second welding position respectively, and the tool transfer and fixing device 300 first drives the first tool to move to the first welding position, and makes the first tool cooperate with the first welding tool 100a to clamp the workpiece 2000. Then the laser head of the laser welding device 200 moves along the weld avoidance channel 11 of the first welding station, so that the laser passes through the weld avoidance channel 11 and irradiates the workpiece 2000, and forms a first weld track on the workpiece 2000 (such as Figure 9 Then, the tool transfer and fixing device 300 drives the first tool to carry the workpiece 2000 with the first weld track formed to move to the second welding position, and the first tool and the second welding tool 100b cooperate to clamp the workpiece 2000. Then, the laser head of the laser welding device 200 moves along the weld avoidance channel 11 of the second welding station to form a second weld track on the workpiece 2000 (as shown). Figure 12 The first weld seam track and the second weld seam track are combined to form the total weld seam track of the workpiece 2000 (as shown in FIG. Figure 13 welding trajectory shown).

[0043] Please refer again Figures 2 to 5 ,as well as Figure 10 The welding tool 100 includes a main body 10 and a first ventilation piece 20. The main body 10 is provided with a through weld avoidance channel 11. The first ventilation piece 20 is installed on the main body 10 and defines a first channel 21 with the main body 10. The first channel 21 is connected to the weld avoidance channel 11 and is used to input oxygen isolation gas into the weld avoidance channel 11.

[0044] The main body 10 is the main supporting structure of the welding tool 100 . Therefore, the main body 10 should be made of sheet metal, plastic or other materials with good mechanical strength.

[0045] The weld avoidance channel 11 on the main body 10 can be in the shape of an "I", a "C", a "double C", etc. The weld avoidance channel 11 on the main body 10 can be one or more, and is specifically set according to the shape of the weld track to be formed on the workpiece 2000, and is not limited here.

[0046] In order to prevent the first ventilator 20 from blocking the weld avoidance channel 11, it should be set so that the orthographic projection of the weld avoidance channel 11 in its through-going direction falls outside the orthographic projection of the first ventilator 20 in the through-going direction of the weld avoidance channel 11. Generally speaking, the through-going direction of the weld avoidance channel 11 is the thickness direction of the main body 20. Figure 5For example, the penetration direction of the weld avoidance channel 11 is vertically downward. The orthographic projection of the first ventilation member 20 in the penetration direction of the weld avoidance channel 11, and the orthographic projection of the weld avoidance channel 11 in its penetration direction both fall on the bottom surface of the main body 20.

[0047] The orthographic projection of the weld avoidance channel 11 in its penetration direction falls outside the orthographic projection of the first ventilation member 20 in the penetration direction of the weld avoidance channel 11. Therefore, the first ventilation member 20 does not obstruct the laser. During welding, the laser can pass through the weld avoidance channel 11 with almost zero obstruction and weld the weld area on the workpiece 2000. The welding energy is large and the welding effect is good. The number of weld avoidance channels 11 is the same as that of the first ventilation members 20 and they correspond one by one. The first ventilation member 20 and the main body 10 define and form a first channel 21 communicating with the corresponding weld avoidance channel 11. The first channel 21 inputs oxygen isolation gas into the corresponding weld avoidance channel 11 during welding.

[0048] It can be understood that the oxygen isolation gas refers to a single gas or a mixed gas with extremely low oxygen content or no oxygen, such as inert gases such as helium and argon, or active gases such as nitrogen and hydrogen. The oxygen isolation gas can protect the weld area on the workpiece 2000 to isolate the external air and reduce the risk of the weld area contacting and oxidizing with oxygen, so as to achieve the purpose of reducing the generation of welding oxides and improving the weld quality. In this case, taking the workpiece 2000 as a bipolar plate as an example, no pickling process is required after the bipolar plate is welded, and the production cost is low.

[0049] Please refer to again Figure 5 In some alternative embodiments, the first channel 21 has a buffer chamber 211 and an air outlet gap 212, and the air outlet gap 212 communicates between the buffer chamber 211 and the weld avoidance channel 11.

[0050] The buffer chamber 211 refers to the space where the external oxygen isolation gas flows into the first channel 21, and the air outlet gap 212 refers to the space where the oxygen isolation gas in the first channel 21 outputs and flows to the weld avoidance channel 11.

[0051] In addition to intake, the buffer chamber 211 also has the functions of storing and buffering the oxygen isolation gas, so that it can continuously input the oxygen isolation gas into the weld avoidance channel 11 through the air outlet gap 212 during welding and form a strong oxygen isolation barrier, ensuring the oxygen isolation effect.

[0052] In some alternative embodiments, an installation channel 12 is formed in the main body 10, and the installation channel 12 communicates with the weld avoidance channel 11; at least a part of the first air vent member 20 is located in the installation channel 12, and a first channel 21 is defined by the wall surface of the installation channel 12. It is worth mentioning that if there are multiple weld avoidance channels 11 and they are independent of each other, the number of installation channels 12 is the same as that of the weld avoidance channels 11 and they are in one-to-one correspondence and communicate with each other.

[0053] To prevent the wall surface of the installation channel 12 from blocking the weld avoidance channel 11, it should be set that the orthographic projection of the weld avoidance channel 11 in its through direction falls within the orthographic projection of the installation channel 12 in the through direction of the weld avoidance channel 11. Similarly, the orthographic projection of the installation channel 12 in the through direction of the weld avoidance channel 11 falls on the bottom surface of the main body 20.

[0054] The orthographic projection of the weld avoidance channel 11 in its through direction falls within the orthographic projection of the installation channel 12 in the through direction of the weld avoidance channel 11. Therefore, during welding, the laser can pass through the installation channel 12 and the weld avoidance channel 11 almost without hindrance in sequence and weld the weld area on the workpiece 2000. The welding energy is large and the welding effect is good. And due to the setting of the installation channel 12, the first air vent member 20 can be quickly positioned and installed by using the installation channel 12, improving the installation efficiency.

[0055] Please refer to again Figure 5 and at the same time refer to Figures 6 to 8 In some alternative embodiments, one wall surface of the installation channel 12 arranged along its width direction includes a first sub-wall surface 121 and a second sub-wall surface 122. The second sub-wall surface 122 is located below the first sub-wall surface 121 and is connected between the first sub-wall surface 121 and the wall surface of the weld avoidance channel 11. The first sub-wall surface 121 and the second sub-wall surface 122 define a limiting space 13. The first air vent member 20 is limited in the limiting space 13, and the first air vent member 20 is arranged on the second sub-wall surface 122 to realize the positioning and installation of the first air vent member 20. In addition, the first air vent member 20 and the second sub-wall surface 122 define a first channel 21, and the first channel 21 inputs oxygen isolation gas into the weld avoidance channel 11 to protect the workpiece 2000 and reduce the risk of oxidation of the workpiece 2000 during welding.

[0056] In some alternative embodiments, the second sub-wall surface 122 includes a first section 122a and a second section 122b. The first section 122a is connected between the second section 122b and the first sub-wall surface 121, and the first section 122a and the first sub-wall surface 121 define a limiting space 13. The first ventilation member 20 includes a mounting portion 22, a first ventilation portion 23, and a second ventilation portion 24. The mounting portion 22 is disposed on the first section 122a. The first ventilation portion 23 is connected between the mounting portion 22 and the second ventilation portion 24. The first surface 231 of the first ventilation portion 23 facing the first section 122a is spaced from the first section 122a, and the first surface 231 and the first section 122a define a buffer cavity 211. The second surface 241 of the second ventilation portion 24 facing the second section 122b is spaced from the second section 122b, and the second surface 241 and the second section 122b define an air outlet gap 212 of the first channel 21.

[0057] During actual operation, the oxygen isolation gas is input into the buffer cavity 211 of the first channel 21, and then flows along the second surface 241 of the second ventilation portion 24 through the air outlet gap 212 and then enters the weld avoiding channel 11 to protect the weld area of the workpiece 2000.

[0058] In some alternative embodiments, the first surface 231 is parallel to the first section 122a, and both the first surface 231 and the first section 122a are surface structures arranged horizontally; and / or, the second surface 241 is parallel to the second section 122b, and both the second surface 241 and the second section 122b are surface structures arranged obliquely. In the through direction of the weld avoiding channel 11, the distance (the distance is as shown by L in Figure 6 the figure) between the second section 122b and the other wall surface of the mounting channel 12 arranged along its width direction gradually converges.

[0059] For example, the first surface 231 is parallel to the first section 122a, and both the first surface 231 and the first section 122a are surface structures arranged horizontally; moreover, the second surface 241 is parallel to the second section 122b, and both the second surface 241 and the second section 122b are surface structures arranged obliquely, and in the through direction of the weld avoiding channel 11, the distance between the second section 122b and the other wall surface of the mounting channel 12 arranged along its width direction gradually converges.

[0060] The first surface 231 is parallel to the first section 122a. Therefore, the first surface 231 and the first section 122a can define a relatively regular buffer cavity 211, so that the oxygen isolation gas in the buffer cavity 211 can flow uniformly to the air outlet gap 212. As for the first section 122a being a surface structure arranged horizontally, the first ventilation member 20 can be stably mounted on the first section 122a and is firmly mounted.

[0061] The second surface 241 is arranged in parallel with the second section 122b. Therefore, the second surface 241 and the second section 122b can define an air outlet gap 212 for forming a relatively regular second channel, so that the oxygen isolation gas entering the air outlet gap 212 can flow evenly towards the weld avoiding channel 11. As for the second section 122b which is an inclined surface structure, and in the through direction of the weld avoiding channel 11, the distance between the second section 122b and the other wall surface of the installation channel 12 arranged along its width direction gradually converges. In this way, the second surface 241 cooperates with the second section 122b and can change the flow direction of the oxygen isolation gas to guide the oxygen isolation gas to flow smoothly towards the weld avoiding channel 11.

[0062] In some alternative embodiments, in the through direction of the weld avoiding channel 11, the first surface 231 is higher than the second surface 241. That is, the first surface 231 is located above the second surface 241 and is spaced apart from the second surface 241. The greater the distance by which the first surface 231 is higher than the second surface 241 (such as Figure 7 the distance M shown), the greater the distance between the first surface 231 and the first section 122a, and the larger the volume of the buffer cavity 211 defined by the first surface 231 and the first section 122a, the more oxygen isolation gas can be buffered, so that the oxygen isolation gas can be continuously introduced into the weld avoiding channel 11 to improve the oxygen isolation effect. Of course, in some other embodiments, the first surface 231 can also be flush with the highest point of the second surface 241. Please refer to Figure 3 、 Figure 5 and Figure 10 , in some alternative embodiments, the welding tooling 100 further includes a first regulating valve 30. The first regulating valve 30 is installed on the first air vent member 20 and is used to regulate the flow rate of the oxygen isolation gas entering the first channel 21.

[0063] As an example, the first regulating valve 30 can be a mechanical valve, a solenoid valve or other valve structures, which can be specifically set according to needs. The first regulating valve 30 is used to regulate the flow rate of the oxygen isolation gas in the first channel 21 to reduce the waste of the oxygen isolation gas while ensuring a better oxygen isolation effect.

[0064] As an example, the number of first regulating valves 30 provided on the same first air vent member 20 can be one or more.

[0065] For example, the first ventilation member 20 and the main body 10 define a first channel 21 that extends in the same direction as the weld avoidance channel 11. A plurality of first regulating valves 30 are provided on the same ventilation member. All the first regulating valves 30 provided on the same first ventilation member 20 are arranged at intervals along the extension direction of the first channel 21 defined by the first ventilation member 20. This design can adjust the flow rate of the oxygen isolation gas in multiple regions within the first channel 21 to ensure that the flow rate and velocity of the oxygen isolation gas in multiple regions within the first channel 21 are consistent, achieving uniform gas supply.

[0066] In some alternative embodiments, an installation channel 12 and an assembly groove 14 are formed on the main body 10. The installation channel 12 communicates between the assembly groove 14 and the weld avoidance channel 11. A part of the first ventilation member 20 is located within the installation channel 12 and defines a first channel 21 with the wall surface of the installation channel 12. The remaining part of the first ventilation member 20 is located within the assembly groove 14. The welding fixture 100 further includes a second ventilation member 40. The second ventilation member 40 is provided on the main body 10, and a second channel is provided within the second ventilation member 40. The second channel communicates with the assembly groove 14 and is used to input oxygen isolation gas into the assembly groove 14.

[0067] It is worth mentioning that if there are multiple weld avoidance channels 11 and they are independent of each other, the number of installation channels 12 is the same as that of the weld avoidance channels 11 and they correspond one by one. All the installation channels 12 and all the weld avoidance channels 11 are completely exposed within the same assembly groove 14. To prevent the groove wall of the assembly groove 14 from blocking the weld avoidance channel 11, it should be set that the orthographic projection of the weld avoidance channel 11 in its through direction, and the orthographic projection of the installation channel 12 in the through direction of the weld avoidance channel 11, both fall within the orthographic projection of the assembly groove 14 in the through direction of the weld avoidance channel 11. Similarly, the orthographic projection of the assembly groove 14 in the through direction of the weld avoidance channel 11 falls on the bottom surface of the main body 20.

[0068] The orthographic projection of the weld avoidance channel 11 in its through direction, and the orthographic projection of the installation channel 12 in the through direction of the weld avoidance channel 11, both fall within the orthographic projection of the assembly groove 14 in the through direction of the weld avoidance channel 11. Therefore, the groove wall of the assembly groove 14 does not pose an obstacle or interference to the laser. During welding, the laser can pass through the assembly groove 14, the installation channel 12, and the weld avoidance channel 11 with almost zero obstruction in sequence and weld the weld area on the workpiece 2000. The welding energy is large and the welding effect is good.

[0069] A part of the first ventilation member 20 is located within the installation channel 12, and the remaining part of the first ventilation member 20 is located within the assembly groove 14. Then, the space occupied by the first ventilation member 20 coincides with that of the main body 10, which is beneficial to reducing the space occupied by the welding fixture 100.

[0070] The second channel within the second vent member 40 is in communication with the assembly groove 14, and oxygen-isolating gas is fed into the assembly groove 14 to increase the concentration of the oxygen-isolating gas within the assembly groove 14. On the one hand, the oxygen-isolating gas within the assembly groove 14 can form another protective barrier on the side of the weld avoidance channel 11 facing away from the workpiece 2000, thereby further enhancing the oxygen-isolating effect. On the other hand, as the oxygen-isolating gas within the assembly groove 14 flows into the weld avoidance channel 11, it provides another supplementary path for oxygen-isolating gas within the weld avoidance channel 11, thereby ensuring that a high concentration of oxygen-isolating gas is always present within the weld avoidance channel 11, further enhancing the oxygen-isolating effect.

[0071] In some optional embodiments, the welding tool 100 also includes a second regulating valve 50, which is installed on the second ventilation piece 40 and is used to adjust the flow rate of the oxygen isolation gas entering the second channel, so as to ensure a higher oxygen isolation gas concentration in the assembly groove 14 while reducing the waste of oxygen isolation gas.

[0072] As an example, the first regulating valve 30 may be a mechanical valve, a solenoid valve or other valve structures, and may be configured specifically as needed.

[0073] As an example, there are multiple second vents 40, and gas is supplied to multiple areas of the assembly groove 14. One or more second regulating valves 50 can be set on the same vent. The setting of multiple second vents 40 and multiple second regulating valves 50 on the same second vent 40 can achieve uniform distribution of oxygen isolation gas by regional control of oxygen isolation gas. The above-mentioned welding tool 100 and laser welding equipment 1000, by setting a first channel 21 to input oxygen isolation gas into the weld avoidance channel 11, the oxygen isolation gas can protect the weld area on the workpiece 2000 to isolate the outside air, reduce the risk of the weld area contacting with oxygen and oxidizing, thereby achieving the purpose of reducing the generation of welding oxides and improving the quality of the weld.

[0074] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0075] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A welding tooling, characterized in that, The welding tooling includes: A main body (10) having a through weld avoiding channel (11) formed thereon; and A first ventilation member (20) mounted on the main body (10) and defining a first channel (21) with the main body (10), the first channel (21) communicating with the weld avoiding channel (11) and being configured to input an oxygen isolation gas into the weld avoiding channel (11).

2. The welding tooling according to claim 1, characterized in that, The first channel (21) has a buffer cavity (211) and an air outlet gap (212), and the air outlet gap (212) communicates between the buffer cavity (211) and the weld avoiding channel (11).

3. The welding tooling according to claim 1 or 2, characterized in that, An installation channel (12) is formed on the main body (10), and the installation channel (12) communicates with the weld avoiding channel (11); At least a part of the first ventilation member (20) is located in the installation channel (12) and defines the first channel (21) with the wall surface of the installation channel (12).

4. The welding tooling according to claim 3, characterized in that, One wall surface of the installation channel (12) along its width direction includes a first sub-wall surface (121) and a second sub-wall surface (122), the second sub-wall surface (122) is connected between the first sub-wall surface (121) and the wall surface of the weld avoiding channel (11), the first sub-wall surface (121) and the second sub-wall surface (122) define a limiting space (13), the first ventilation member (20) is limited in the limiting space (13), and the first ventilation member (20) is disposed on the second sub-wall surface (122) and defines the first channel (21) with the second sub-wall surface (122).

5. The welding tooling according to claim 4, characterized in that The second sub-wall surface (122) includes a first section (122a) and a second section (122b), the first section (122a) is connected between the second section (122b) and the first sub-wall surface (121), and the first section (122a) and the first sub-wall surface (121) define the limiting space (13); The first ventilation member (20) includes a mounting portion (22), a first ventilation portion (23) and a second ventilation portion (24), the mounting portion (22) is disposed on the first section (122a), the first ventilation portion (23) is connected between the mounting portion (22) and the second ventilation portion (24), a first surface (231) of the first ventilation portion (23) facing the first section (122a) and the first section (122a) define the buffer cavity (211) of the first channel (21), and a second surface (241) of the second ventilation portion (24) facing the second section (122b) and the second section (122b) define the air outlet gap (212) of the first channel (21).

6. The welding tooling according to claim 5, characterized in that, The first surface (231) is arranged parallel to the first section (122a), and both the first surface (231) and the first section (122a) are horizontally arranged surface structures; and / or The second surface (241) is arranged parallel to the second section (122b), and both the second surface (241) and the second section (122b) are inclined surface structures. In the through direction of the weld avoiding channel (11), the distance between the second section (122b) and the other wall surface of the installation channel (12) arranged along its width direction gradually converges.

7. The welding tooling according to claim 5, characterized in that, In the through direction of the weld avoiding channel (11), the first surface (231) is higher than the second surface (241).

8. The welding tooling according to claim 1, wherein, It further includes a first regulating valve (30). The first regulating valve (30) is installed on the first gas venting member (20) and is used to regulate the flow rate of the oxygen isolation gas entering the first channel (21).

9. The welding tooling according to claim 1, wherein An installation channel (12) and an assembly groove (14) are formed on the main body (10). The installation channel (12) communicates between the assembly groove (14) and the weld avoiding channel (11). A part of the first gas venting member (20) is located in the installation channel (12), and together with the wall surface of the installation channel (12), it defines the first channel (21). The remaining part of the first gas venting member (20) is located in the assembly groove (14). The welding tooling further includes a second gas venting member (40). The second gas venting member (40) is arranged on the main body (10), and a second channel is provided in the second gas venting member (40). The second channel communicates with the assembly groove (14) and is used to input oxygen isolation gas into the assembly groove (14).

10. The welding tooling according to claim 9, characterized in that, It further includes a second regulating valve (50). The second regulating valve (50) is installed on the second gas venting member (40) and is used to regulate the flow rate of the oxygen isolation gas entering the second channel.

11. A laser welding device, characterized in that, The laser welding equipment has a welding position. The laser welding equipment includes a laser welding device (200), a first tooling and a second tooling. The second tooling is constructed by the welding tooling according to any one of claims 1 to 10 above. The first tooling and the second tooling cooperate and are used to clamp the workpiece (2000) at the welding position. The laser welding device (200) is used to weld the workpiece (2000) located at the welding position.

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