Laser welding press jaws and laser welding apparatus

Abstract

This application relates to the field of battery processing equipment technology, and in particular to a laser welding gripper and laser welding equipment. The laser welding gripper includes a gripper body and an air blowing channel. The gripper body includes a pressing part and a mounting part connected to each other, and the mounting part is used to connect with a base. The pressing part has a pressing surface on one side in a first direction, which can press against the surface of the workpiece. The pressing part has a processing hole that penetrates the pressing part in the first direction. The air blowing channel is disposed inside the gripper body. One end of the air blowing channel is connected to the air supply device of the base, and the other end of the air blowing channel penetrates the wall of the processing hole in a second direction to form an air blowing port. According to the laser welding gripper and laser welding equipment provided by this application, the processing smoothness of the workpiece is guaranteed, the oxidation phenomenon on the surface of the workpiece is reduced, and the generation of spatter is reduced, thereby significantly improving the strength and corrosion resistance of the weld joint and improving the welding quality.

Description

Technical Field

[0001] This application relates to the field of battery processing equipment technology, and in particular to a laser welding gripper and laser welding equipment. Background Technology

[0002] In the field of laser welding, traditional laser welding equipment often faces many challenges when welding workpieces.

[0003] During welding, spatter and oxidation are prone to occur on the surface of the workpiece. Spatter may adhere to critical components of the welding equipment, affecting not only the appearance quality of the weld but also the normal operation and service life of the equipment. Oxidation, on the other hand, reduces the strength and corrosion resistance of the weld joint, severely impacting the weld quality.

[0004] Furthermore, due to the lack of effective gas protection measures, welding of environmentally sensitive materials, such as aluminum alloys and titanium alloys, is highly susceptible to the influence of impurities in the air, leading to welding defects. At the same time, traditional laser welding clamp structures are relatively simple, often possessing only a single clamping function, which cannot meet the demands of modern high-precision, high-quality welding processes. When dealing with workpieces with complex shapes, it is difficult to achieve uniform and stable clamping, thus affecting the consistency and reliability of the weld. Utility Model Content

[0005] The purpose of this application is to provide a laser welding clamp and a laser welding device, so as to solve to a certain extent the technical problems existing in the prior art, such as the easy generation of spatter and oxidation on the surface of the workpiece during the welding process, which affects the welding quality; the lack of effective gas protection measures, which makes it susceptible to the influence of impurities in the air, leading to welding defects; and the relatively simple structure of traditional laser welding clamps, which often only have a single clamping function and cannot meet the needs of modern high-precision and high-quality welding processes.

[0006] According to a first aspect of this application, a laser welding gripper is provided for mounting on the base of a laser welding equipment. The laser welding gripper includes a gripper body and an air blowing channel. The gripper body includes a pressing part and a mounting part connected to each other. The mounting part is used to connect with the base.

[0007] The pressing part is provided with a pressing surface on one side of the first direction, which can press against the surface of the workpiece. The pressing part is provided with a processing hole that penetrates the pressing part along the first direction, and one end of the processing hole ends at the pressing surface. The air blowing channel is provided inside the pressing claw body. One end of the air blowing channel is connected to the air supply device of the machine base. The other end of the air blowing channel penetrates the hole wall of the processing hole along the second direction to form an air blowing port. The second direction intersects the first direction.

[0008] Preferably, the pressing part extends along the second direction, the first end of the pressing part in the second direction is connected to the placement part, and the processing hole is disposed at the second end of the pressing part in the second direction;

[0009] In the direction from the first end to the second end of the pressing part, the size of the pressing part gradually decreases in the first direction.

[0010] Preferably, in the first direction, the machining hole includes a guide section and an extension section connected to each other, the guide section being disposed at one end of the machining hole near the abutment surface;

[0011] The hole wall of the guide section extends along the first direction;

[0012] In the direction from one end of the extended section connected to the guide section to the other end, the hole wall of the extended section gradually slopes outward.

[0013] Preferably, the air inlet is disposed on the wall of the hole in the extended section.

[0014] Preferably, the pressing part is provided with a defect, and the defect penetrates the hole wall facing the air blowing port along the second direction.

[0015] According to a second aspect of this application, a laser welding apparatus is provided, including the aforementioned base and the laser welding gripper described in any of the aforementioned technical solutions, thus possessing all the beneficial technical effects of the laser welding gripper, which will not be elaborated here.

[0016] Preferably, the base includes:

[0017] A mounting plate, wherein the mounting portion can be fixed to one end of the mounting plate in the first direction;

[0018] A first driving member is connected to the mounting plate in a transmission manner. The first driving member drives the mounting plate to move along a first direction, thereby causing the laser welding claw to move along the first direction.

[0019] Preferably, the base further includes:

[0020] A transmission plate, through which the first driving component is connected to the mounting plate;

[0021] A buffer section is disposed between the transmission plate and the mounting plate;

[0022] The guide portion includes a guide groove extending along the first direction on one of the transmission plate and the mounting plate, and the guide portion is fixed on the other of the transmission plate and the mounting plate. The guide portion and the guide groove are slidably connected along the first direction.

[0023] Preferably, the base further includes a second driving member, the first driving member is disposed at the driving end of the second driving member, the second driving member drives the first driving member to move along a third direction, the third direction intersects the plane determined by the first direction and the second direction.

[0024] Preferably, the mounting plate is provided with an air supply channel;

[0025] With the mounting part installed on the mounting plate, the air supply channel is connected to the air blowing channel.

[0026] Compared with the prior art, the beneficial effects of this application are as follows:

[0027] The laser welding gripper provided in this application has two advantages. First, by providing a machining hole penetrating the gripper along a first direction in its pressing part, the machining position of the workpiece is exposed when the gripper performs the action of pressing the workpiece, thus ensuring smooth machining of the workpiece. Second, by providing an air blowing channel inside the gripper body, with one end of the air blowing channel connected to the air supply device of the machine base and the other end penetrating the wall of the machining hole along a second direction intersecting the first direction, protective gas can be continuously blown into the welding area during the welding process. The protective gas can effectively isolate air, reduce oxidation on the surface of the workpiece, and reduce the generation of spatter, thereby significantly improving the strength and corrosion resistance of the weld joint and enhancing the welding quality.

[0028] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0030] Figure 1 This is an isometric structural diagram of the laser welding gripper provided in the embodiments of this application;

[0031] Figure 2A schematic diagram of the isometric structure of a laser welding gripper provided in another embodiment of this application;

[0032] Figure 3 A schematic diagram of the assembly structure of the laser welding gripper and mounting plate provided in the embodiments of this application;

[0033] Figure 4 This is a partial schematic diagram of the laser welding equipment provided in an embodiment of this application;

[0034] Figure 5 This is another partial schematic diagram of the laser welding equipment provided in the embodiments of this application.

[0035] Figure label:

[0036] 11-Pressure section; 110-Machining hole; 111-Guide section; 112-Extension section; 113-Deficiency section; 12-Setting section; 13-Air blowing channel; 131-Air blowing port; 2-Setting plate; 21-Buffer section; 22-Guide post; 23-Air supply interface; 24-Transmission groove; 3-Transmission plate; 31-Setting protrusion; 32-Transmission protrusion; 41-First driving component; 42-Second driving component; 5-Workpiece to be processed; F1-First direction; F2-Second direction; F3-Third direction. Detailed Implementation

[0037] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0038] The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application.

[0039] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0042] The following reference Figures 1 to 5 This application describes laser welding grippers and laser welding equipment according to some embodiments.

[0043] See Figures 1 to 5 As shown, an embodiment of the first aspect of this application provides a laser welding gripper for mounting on the base of a laser welding equipment. The laser welding gripper includes a gripper body and an air blowing channel 13. The gripper body includes a pressing part 11 and a mounting part 12 connected to each other, and the mounting part 12 is used to connect to the base. The pressing part 11 has a pressing surface on one side of the first direction F1, which can press against the surface of the workpiece 5. The pressing part 11 has a processing hole 110 that penetrates the pressing part 11 along the first direction F1, and one end of the processing hole 110 ends at the pressing surface. The air blowing channel 13 is disposed inside the gripper body. One end of the air blowing channel 13 is connected to the air supply device of the base, and the other end of the air blowing channel 13 penetrates the hole wall of the processing hole 110 along the second direction F2 to form an air blowing port 131. The second direction F2 intersects the first direction F1.

[0044] According to the laser welding gripper provided by the above-mentioned technical features, on the one hand, by providing a processing hole 110 through the pressing part 11 along the first direction F1, the processing position of the workpiece 5 can be exposed by the processing hole 110 when the laser welding gripper performs the action of pressing the workpiece 5, so as to ensure the smooth processing of the workpiece 5; on the other hand, by providing an air blowing channel 13 inside the gripper body, with one end of the air blowing channel 13 connected to the air supply device of the machine base, and the other end penetrating the hole wall of the processing hole 110 along the second direction F2 intersecting the first direction F1, protective gas can be continuously blown into the welding area during the welding process. The protective gas can effectively isolate air, reduce the oxidation phenomenon on the surface of the workpiece 5, reduce the generation of spatter, thereby significantly improving the strength and corrosion resistance of the welded joint and improving the welding quality.

[0045] like Figures 1 to 5As shown in the figure, F1 can be an example of the first direction F1 mentioned above, and F2 can be an example of the second direction F2 mentioned above. Preferably, the second direction F2 can be perpendicular to the first direction F1. The perpendicular blowing direction makes the gas flow path in the machining hole 110 more regular, reducing gas flow resistance and turbulence. This helps to ensure that the gas reaches the welding area more efficiently, improves gas utilization, and reduces gas consumption costs. At the same time, stable gas flow also helps to maintain the stability of the welding process and reduce welding defects caused by gas instability. For ease of description, the direction intersecting the plane determined by the first direction F1 and the second direction F2 is defined as the third direction. F3 shown in the figure can be an example of the third direction F3 mentioned above. Preferably, the third direction F3 is perpendicular to the plane determined by the first direction F1 and the second direction F2.

[0046] Preferably, such as Figures 1 to 5 As shown, the pressing part 11 extends along the second direction F2. The first end of the pressing part 11 in the second direction F2 is connected to the mounting part 12, and a machining hole 110 is provided at the second end of the pressing part 11 in the second direction F2. In the direction from the first end to the second end of the pressing part 11, the size of the pressing part 11 gradually decreases in the first direction F1. In other words, the first end of the pressing part 11 connected to the mounting part 12 is thicker in the first direction F1 than the other end of the pressing part 11. This not only effectively increases the connection area between the mounting part 12 and the pressing part 11, improving the stability and deformation resistance of the laser welding gripper; but also, the second end where the machining hole 110 is located is thinner, effectively improving the flexibility and accuracy of the laser welding gripper in performing the pressing action.

[0047] Preferably, such as Figure 2As shown, in the first direction F1, the machining hole 110 includes a guide section 111 and an extension section 112 connected to each other. The guide section 111 is located at one end of the machining hole 110 near the pressure surface. The hole wall of the guide section 111 extends along the first direction F1. In the direction from the end of the extension section 112 connected to the guide section 111 to the other end, the hole wall of the extension section 112 gradually slopes outwards. Thus, on the one hand, the extension of the hole wall of the guide section 111 along the first direction F1 provides a relatively regular and straight channel for the laser beam. This allows the laser beam to propagate more accurately along a preset path when entering the welding area, reducing laser beam scattering and deflection, thereby improving the accuracy of laser guidance, ensuring the accuracy of the welding position, and facilitating more refined welding processes, especially suitable for workpieces requiring high welding precision. On the other hand, the gradual outward slope of the hole wall of the extension section 112 from the end connected to the guide section 111 to the other end provides a channel for the outward discharge of spatter generated during the welding process. When spatter enters the machining hole 110, due to the inclined structure of the extension section 112, the spatter can more easily move outward along the hole wall and be discharged, avoiding the accumulation of spatter in the machining hole 110, reducing the impact on the laser beam propagation path, and ensuring the stability and continuity of the welding process.

[0048] Preferably, such as Figures 1 to 5 As shown, the air inlet 131 can be disposed on the hole wall of the extension section 112. On the one hand, the area of ​​the extension section 112 is large, which can provide an air inlet 131 with sufficient air blowing area; on the other hand, the space enclosed by the extension section 112 is large, which is convenient to accommodate the gas blown out by the air inlet 131.

[0049] Furthermore, such as Figure 1 and Figure 2 As shown, in the second direction F2, the side wall height of the extended section 112 on the side near the air outlet 131 is higher than the side wall height on the other side of the extended section 112. This further facilitates the discharge of gas blown out by the air outlet 131 and ensures smooth gas flow.

[0050] Preferably, such as Figure 1 As shown, the aforementioned pressing part 11 is provided with a defect 113, which penetrates the hole wall of the machining hole 110 facing the air blowing port 131 along the second direction F2, to further facilitate the discharge of gas blown out by the air blowing port 131 and ensure smooth gas flow. However, it is not limited to this, such as... Figure 2 As shown, the aforementioned machined hole 110 can also be a hole that is completely closed circumferentially.

[0051] Preferably, such as Figure 1 and Figure 2As shown, the aforementioned placement part 12 and pressing part 11 can be an integral connector to ensure the connection strength of the laser-welded pressure claw.

[0052] See Figures 3 to 5 The second aspect of this application also provides a laser welding device, including the above-described base and the laser welding gripper described in any embodiment, thus possessing all the beneficial technical effects of the laser welding gripper, which will not be repeated here.

[0053] Preferably, such as Figure 3 and Figure 4 As shown, the base may include a mounting plate 2, and the mounting part 12 can be fixed to one end of the mounting plate 2 in the first direction F1 to realize the connection between the base and the laser welding claw.

[0054] Preferably, such as Figure 4 As shown, the mounting plate 2 is provided with an air supply channel, and one end of the air supply channel is provided with an air supply interface 23 for connecting with an air supply device. When the mounting part 12 is mounted on the mounting plate 2, the air supply channel is connected to the air blowing channel 13 to supply air to the air blowing port 131.

[0055] Optionally, the aforementioned gas supply device may be a gas cylinder, a gas pump, etc.

[0056] Preferably, the mounting plate 2 and the mounting base are detachably connected (e.g., by bolt thread connection) to achieve the replaceability of the laser welding clamp and reduce the maintenance cost of the laser welding clamp.

[0057] Preferably, such as Figure 4 As shown, the aforementioned base may further include a first driving member 41, which is connected to the mounting plate 2 in a transmission manner. The first driving member 41 drives the mounting plate to move along a first direction, thereby driving the laser welding gripper to move along the first direction F1, so as to realize the laser welding gripper performing the pressing and releasing actions.

[0058] Optionally, the first driving member 41 may be a linear driving device with the driving direction along the first direction F1, such as a linear motor, cylinder, etc.

[0059] Preferably, such as Figure 4 As shown, the aforementioned base may also include a transmission plate 3, through which the aforementioned first driving member 41 can be connected to the aforementioned mounting plate 2 via the transmission plate 3.

[0060] Preferably, such as Figure 4As shown, a transmission protrusion 32 is provided on the side of the transmission plate 3 facing the mounting plate 2. Correspondingly, a transmission groove 24 is provided on the side of the mounting plate 2 facing the transmission plate 3. The transmission protrusion 32 is embedded in the transmission groove 24 so as to drive the mounting plate 2 to move along the first direction F1 through the transmission protrusion 32.

[0061] Preferably, such as Figure 4 As shown, a mounting protrusion 31 is provided on the side of the transmission plate 3 facing the mounting plate 2, and the mounting protrusion 31 is located at the top of the transmission plate 3. The mounting protrusion 31 may be provided with a guide groove extending along the first direction F1. The top of the mounting plate 2 is provided with a guide post 22 extending along the first direction F1. The guide post 22 is inserted into the guide groove, and the guide post 22 and the guide groove are slidably connected along the first direction F1. On the one hand, the mutual limiting of the guide post 22 and the guide groove can effectively improve the setting stability of the mounting plate 2; on the other hand, the slidable connection of the guide post 22 and the guide groove along the first direction F1 can effectively improve the accuracy of the movement of the mounting plate 2 along the first direction F1.

[0062] However, it is not limited to this. As not shown in the figure, the guide groove can also be provided on the top of the mounting plate, and the guide post can be fixed to the mounting protrusion.

[0063] Preferably, such as Figure 3 As shown, the aforementioned base may further include a buffer portion 21, which can be sleeved on the outside of the aforementioned guide post 22 and can be disposed between the aforementioned transmission plate 3 and mounting plate 2. Correspondingly, the dimension of the aforementioned transmission groove 24 in the first direction F1 is larger than the dimension of the transmission protrusion 32 in the first direction F1. Thus, the larger dimension of the transmission groove 24 in the first direction F1 than the larger dimension of the transmission protrusion 32 in the first direction F1 provides deformation space for the buffer portion 21. By sleeved on the outside of the guide post 22 and located between the transmission plate 3 and mounting plate 2, the buffer portion 21 can effectively buffer the contact impact between the laser welding pressure claw and the workpiece 5 during the process of the laser welding pressure claw pressing against the workpiece 5, and the elasticity of the buffer portion 21 can effectively ensure the tightness of the fit between the pressure claw and the workpiece 5.

[0064] Alternatively, the buffer portion 21 described above can be a spring.

[0065] Preferably, such as Figure 4 As shown, the aforementioned base may further include a second driving member 42, and the aforementioned first driving member 41 may be disposed at the driving end of the second driving member 42. The second driving member 42 drives the first driving member 41 to move along the third direction F3, so as to adjust the position of the aforementioned laser welding gripper on the third direction F3.

[0066] Similarly, the second drive element 42 can also be the linear drive device described above.

[0067] In an embodiment (not shown in the figure), the laser welding equipment may further include a laser welding device that can process the exposed portion of the workpiece 5 with the machined hole 110.

[0068] Optionally, the laser welding apparatus may include a laser welder and a movable component, which may be located close to the base. The laser welder may be fixed to the movable component so that the movable component can drive the movement and focusing of the laser welder.

[0069] It should be noted that the above-mentioned laser welding device is an existing device in this field, and will not be described in detail here.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A laser welded clamp jaw characterized by, For mounting on a laser welding equipment, the laser welding gripper includes a gripper body and an air blowing channel. The gripper body includes a pressing part and a mounting part connected to each other. The mounting part is used to connect with the mounting base. The pressing part is provided with a pressing surface on one side of the first direction, which can press against the surface of the workpiece. The pressing part is provided with a processing hole that penetrates the pressing part along the first direction, and one end of the processing hole ends at the pressing surface. The air blowing channel is provided inside the pressing claw body. One end of the air blowing channel is connected to the air supply device of the machine base. The other end of the air blowing channel penetrates the hole wall of the processing hole along the second direction to form an air blowing port. The second direction intersects the first direction.

2. The laser welded clamp jaw of claim 1, wherein, The pressing part extends along the second direction, and the first end of the pressing part in the second direction is connected to the placement part. The processing hole is provided at the second end of the pressing part in the second direction. In the direction from the first end to the second end of the pressing part, the size of the pressing part gradually decreases in the first direction.

3. The laser welded clamp jaw of claim 1, wherein, In the first direction, the machining hole includes a guide section and an extension section connected to each other, the guide section being disposed at one end of the machining hole near the abutment surface; The hole wall of the guide section extends along the first direction; In the direction from one end of the extended section connected to the guide section to the other end, the hole wall of the extended section gradually slopes outward.

4. The laser welded clamp jaw of claim 3, wherein, The air inlet is located on the wall of the extension section.

5. The laser welded clamp jaw of claim 1, wherein, The pressing part is provided with a defect, and the defect penetrates the hole wall facing the air blowing port along the second direction.

6. A laser welding apparatus characterized by comprising: It includes the base and the laser welding gripper according to any one of claims 1 to 5.

7. The laser welding apparatus of claim 6, wherein, The base includes: A mounting plate, wherein the mounting portion can be fixed to one end of the mounting plate in the first direction; A first driving member is connected to the mounting plate in a transmission manner. The first driving member drives the mounting plate to move along a first direction, thereby causing the laser welding claw to move along the first direction.

8. The laser welding apparatus of claim 7, wherein, The base also includes: A transmission plate, through which the first driving component is connected to the mounting plate; A buffer section is disposed between the transmission plate and the mounting plate; The guide portion includes a guide groove extending along the first direction on one of the transmission plate and the mounting plate, and the guide portion is fixed on the other of the transmission plate and the mounting plate. The guide portion and the guide groove are slidably connected along the first direction.

9. The laser welding apparatus of claim 7, wherein, The base also includes a second driving member, and the first driving member is disposed at the driving end of the second driving member. The second driving member drives the first driving member to move along a third direction, which intersects the plane determined by the first direction and the second direction.

10. The laser welding equipment according to claim 7, characterized in that, The mounting plate is equipped with an air supply channel; With the mounting part installed on the mounting plate, the air supply channel is connected to the air blowing channel.

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