Welding device

Abstract

The utility model discloses a kind of welding devices, and welding device includes: upper die assembly, upper die assembly includes the first upper die and second upper die being spaced apart along first direction;Lower die assembly, lower die assembly includes the first lower die and second lower die being spaced apart along first direction, first lower die and first upper die are used to clamp and weld the part of workpiece to be welded, and second lower die and second upper die are used to clamp and weld another part of workpiece to be welded;Wherein, at least one of first lower die and second lower die is adjustable along first direction, and at least one of first lower die and second lower die is adjustable along second direction.Welding device according to the utility model embodiment can realize two weld marks welding, and the welding effect consistency of two weld marks is better, and the arrangement space requirement of welding device is smaller, is convenient for arrangement, and welding device can independently adjust the position of first lower die and second lower die, to avoid uneven local pressure of workpiece to be welded, and welding effect is better.

Description

Technical Field

[0001] This utility model relates to the field of battery welding technology, and in particular to a welding device. Background Technology

[0002] Welding apparatuses in related technologies typically include an upper mold assembly and a lower mold assembly, which can clamp the workpiece to be welded (such as battery tabs) and perform welding on the workpiece.

[0003] Some technologies employ welding devices with two welding systems simultaneously, but this cannot guarantee the consistency of the welding effect of the two weld marks. Furthermore, the cost of two welding systems is relatively high, and the space required for arranging the two systems is also large, making layout inconvenient. Other technologies use welding devices with two upper dies sharing one lower die, but during the welding process, the jumping of the welding head can cause the gap between the two upper dies and the lower die to be inconsistent, resulting in uneven local pressure on the workpiece to be welded and significant differences in the welding effect of the two weld marks. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide a welding device that can perform two-stage welding, resulting in better consistency in the welding effect of the two stages. The welding device requires less space for arrangement, making it easy to install. Furthermore, the positions of the first and second lower dies can be adjusted independently to avoid uneven local pressure on the workpiece, thus improving the welding effect.

[0005] To achieve the above objectives, a welding device is proposed according to an embodiment of the present invention. The welding device has a first direction and a second direction, the first direction and the second direction being perpendicular to each other, and the welding device includes: an upper mold assembly, the upper mold assembly including a first upper mold and a second upper mold spaced apart along the first direction; and a lower mold assembly, the lower mold assembly including a first lower mold and a second lower mold spaced apart along the first direction, the first lower mold and the first upper mold being used to clamp and weld a portion of a workpiece to be welded, and the second lower mold and the second upper mold being used to clamp and weld another portion of the workpiece to be welded; wherein at least one of the first lower mold and the second lower mold is adjustable along the first direction, and at least one of the first lower mold and the second lower mold is adjustable along the second direction.

[0006] Therefore, the welding device according to the present invention can achieve two-stage welding, resulting in better consistency in the welding effect of the two-stage welding. The welding device requires less space for arrangement, making it easy to arrange. Moreover, the welding device can independently adjust the positions of the first and second lower dies to avoid uneven local pressure on the workpiece to be welded, resulting in better welding effect.

[0007] According to some embodiments of the present invention, the lower mold assembly includes: a base plate; a first base, the first base being mounted on the base plate, and the first lower mold being rotatably fixed to the first base; a second base, the second base being mounted on the base plate and spaced apart from the first base along the first direction, and the second lower mold being rotatably fixed to the second base; wherein at least one of the first base and the second base is movable along the first direction.

[0008] According to some embodiments of the present invention, the base plate is provided with a plurality of first fixing holes, the first base is provided with a plurality of first waist holes, the plurality of first waist holes and the plurality of first fixing holes are connected one-to-one by a first fastener, and the first fastener is adjustable along the first direction within the first waist hole; and / or, the base plate is provided with a plurality of second fixing holes, the second base is provided with a plurality of second waist holes, the plurality of second waist holes and the plurality of second fixing holes are connected one-to-one by a second fastener, and the second fastener is adjustable along the first direction within the second waist hole.

[0009] According to some embodiments of the present invention, a plurality of first waist holes are respectively adjacent to opposite sides of the width direction of the first base; and / or, a plurality of second waist holes are respectively adjacent to opposite sides of the width direction of the second base.

[0010] According to some embodiments of the present invention, the movable distance of the first base and / or the second base along the first direction is L, where L satisfies: 20mm≤L≤60mm.

[0011] According to some embodiments of the present invention, the lower mold assembly further includes: both the first base and the second base include: an outer frame, the outer frame being fixed to the base plate; a base body, the base body being movably fixed within the outer frame along the second direction, the outer frame covering the base body circumferentially along the base body, the first lower mold being rotatably fixed to the base body of the first base, and the second lower mold being rotatably fixed to the base body of the second base.

[0012] According to some embodiments of the present invention, the lower mold assembly further includes: a first adjusting bolt, wherein the base body of the first base is provided with a first bolt hole extending along the second direction, the first adjusting bolt passes through the first bolt hole and abuts against the base plate, and the first adjusting bolt is used to adjust the height of the base body of the first base in the second direction; and / or, a second adjusting bolt, wherein the base body of the second base is provided with a second bolt hole extending along the second direction, the second adjusting bolt passes through the second bolt hole and abuts against the base plate, and the second adjusting bolt is used to adjust the height of the base body of the second base in the second direction.

[0013] According to some embodiments of the present invention, the lower mold assembly further includes: a first bracket, one end of which is rotatably connected to the first base, and the other end of which extends from the first base toward the second base, and the first lower mold is connected to the other end of the first bracket; and a second bracket, one end of which is rotatably connected to the second base, and the other end of which extends from the second base toward the first base, and the second lower mold is connected to the other end of the second bracket.

[0014] According to some embodiments of the present invention, the first bracket includes a first rotating shaft and a first mounting plate connected to each other. The first rotating shaft is rotatably connected to the first base through a plurality of first bearings, and the first lower mold is connected to the first mounting plate. The second bracket includes a second rotating shaft and a second mounting plate connected to each other. The second rotating shaft is rotatably connected to the second base through a plurality of second bearings, and the second lower mold is connected to the second mounting plate.

[0015] According to some embodiments of the present invention, the first mounting plate is provided with a plurality of first connecting holes arranged circumferentially along the first mounting plate, and the first lower mold is provided with a plurality of second connecting holes, the plurality of first connecting holes and the plurality of second connecting holes being connected one-to-one by first pins; and the second mounting plate is provided with a plurality of third connecting holes arranged circumferentially along the second mounting plate, and the second lower mold is provided with a plurality of fourth connecting holes, the plurality of third connecting holes and the plurality of fourth connecting holes being connected one-to-one by second pins.

[0016] According to some embodiments of the present invention, the first lower mold is provided with a first conical surface and a first toothed surface. The first conical surface is located on the side of the first toothed surface away from the second lower mold and protrudes from the first toothed surface, and is located away from the second lower mold along the axial direction of the first lower mold. The outer diameter of the first conical surface is increased. The second lower mold is provided with a second conical surface and a second toothed surface. The second conical surface is located on the side of the second toothed surface away from the first lower mold and protrudes from the second toothed surface, and is located away from the first lower mold along the axial direction of the second lower mold. The outer diameter of the second conical surface is increased.

[0017] According to some embodiments of the present invention, the first lower mold is further provided with a first processing surface, which is located on the side of the first toothed surface adjacent to the second lower mold. The outer diameter of the first processing surface is smaller than the outer diameter of the first toothed surface and moves closer to the second lower mold along the axial direction of the first lower mold, thus reducing the outer diameter of the first processing surface. Furthermore, the second lower mold is further provided with a second processing surface, which is located on the side of the second toothed surface adjacent to the first lower mold. The outer diameter of the second processing surface is smaller than the outer diameter of the second toothed surface and moves closer to the first lower mold along the axial direction of the second lower mold, thus reducing the outer diameter of the second processing surface.

[0018] According to some embodiments of the present invention, the upper mold assembly further includes a connector, which is disposed between the first upper mold and the second upper mold and connected to the first upper mold and the second upper mold respectively.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0021] Figure 1 This is a schematic diagram of the welding device according to an embodiment of the present utility model;

[0022] Figure 2 This is a structural schematic diagram of the welding apparatus according to another perspective of an embodiment of the present utility model;

[0023] Figure 3 yes Figure 2 A sectional view at point AA;

[0024] Figure 4 yes Figure 2 A sectional view at BB;

[0025] Figure 5 This is a schematic diagram of the lower mold assembly of the welding device according to an embodiment of the present utility model;

[0026] Figure 6 This is an exploded view of the lower mold assembly of the welding device according to an embodiment of the present utility model;

[0027] Figure 7 This is a schematic diagram of the upper mold assembly structure of the welding device according to an embodiment of the present utility model.

[0028] Figure label:

[0029] 1. Welding equipment;

[0030] 100. Upper mold assembly; 110. First upper mold; 120. Second upper mold; 130. Connecting component;

[0031] 200. Lower mold assembly; 210. First lower mold; 211. Second connecting hole; 212. First tapered surface; 213. First toothed surface; 214. First machined surface; 220. Second lower mold; 221. Fourth connecting hole; 222. Second tapered surface; 223. Second toothed surface; 224. Second machined surface;

[0032] 230. Base plate; 240. First base; 241. First waist hole; 242. Outer frame; 243. Base body; 244. First bolt hole; 245. Second bolt hole; 250. Second base; 251. Second waist hole; 260. First adjusting bolt; 270. Second adjusting bolt;

[0033] 280. First bracket; 281. First pivot; 282. First mounting plate; 283. First connecting hole; 284. First pin; 285. First bearing;

[0034] 290. Second bracket; 291. Second pivot; 292. Second mounting plate; 293. Third connecting hole; 294. Second pin; 295. Second bearing. Detailed Implementation

[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0036] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element 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 of this utility model.

[0037] In the description of this utility model, "first feature" and "second feature" may include one or more of the features.

[0038] In the description of this utility model, "multiple" means two or more, and "several" means one or more.

[0039] The welding apparatus 1 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0040] like Figures 1-7 As shown, the welding device 1 according to an embodiment of the present invention has a first direction and a second direction, the first direction and the second direction being perpendicular to each other, and the welding device 1 includes an upper mold assembly 100 and a lower mold assembly 200. The upper mold assembly 100 and the lower mold assembly 200 can be arranged along the second direction.

[0041] The upper mold assembly 100 includes a first upper mold 110 and a second upper mold 120 spaced apart along a first direction, and the lower mold assembly 200 includes a first lower mold 210 and a second lower mold 220 spaced apart along a first direction. The first lower mold 210 and the first upper mold 110 are used to clamp and weld a part of the workpiece to be welded, and the second lower mold 220 and the second upper mold 120 are used to clamp and weld another part of the workpiece to be welded.

[0042] At least one of the first lower mold 210 and the second lower mold 220 is adjustable along a first direction, and at least one of the first lower mold 210 and the second lower mold 220 is adjustable along a second direction.

[0043] Wherein, at least one of the first lower mold 210 and the second lower mold 220 is adjustable along the first direction, meaning that the first lower mold 210 is adjustable along the first direction, or the second lower mold 220 is adjustable along the first direction, or both the first lower mold 210 and the second lower mold 220 are adjustable along the first direction.

[0044] And, at least one of the first lower mold 210 and the second lower mold 220 is adjustable in the second direction, which means that the first lower mold 210 is adjustable in the second direction, or the second lower mold 220 is adjustable in the second direction, or both the first lower mold 210 and the second lower mold 220 are adjustable in the second direction.

[0045] For example, the first direction can be horizontal, the second direction can be vertical, and the upper mold assembly 100 can be positioned above the lower mold assembly 200. The welding device 1 in this embodiment can be used for the tab welding of a power battery.

[0046] The upper mold assembly 100 can be a whole, that is, the first upper mold 110 and the second upper mold 120 move synchronously. By setting the first upper mold 110 and the second upper mold 120 at intervals along the first direction, positional interference between the first upper mold 110 and the second upper mold 120 can be avoided, so that the first upper mold 110 and the first lower mold 210 can cooperate, and the second upper mold 120 and the second lower mold 220 can cooperate.

[0047] Furthermore, one of the upper mold assembly 100 and the lower mold assembly 200 can be connected to a drive device for transmission. That is, one of the upper mold assembly 100 and the lower mold assembly 200 can be driven by the drive device to perform active movement, while the other can perform passive movement. For example, the drive device can be connected to the upper mold assembly 100, so that the drive device can drive the first upper mold 110 and the second upper mold 120 to rotate synchronously. When the first upper mold 110 and the second upper mold 120 rotate, the workpiece to be welded also moves. At this time, the friction between the workpiece to be welded and the lower mold assembly 200 can drive the first lower mold 210 and the second lower mold 220 to rotate, thereby allowing the upper mold assembly 100 and the lower mold assembly 200 to weld different parts of the workpiece to be welded.

[0048] According to the welding device 1 of this utility model embodiment, by providing a first upper mold 110 and a second upper mold 120 in the upper mold assembly 100, and a first lower mold 210 and a second lower mold 220 in the lower mold assembly 200, the first upper mold 110 and the first lower mold 210 can clamp a portion of the workpiece to be welded and weld it to form a weld mark, and the second upper mold 120 and the second lower mold 220 can clamp another portion of the workpiece to be welded and weld it to form another weld mark. That is, this utility model can use one welding device 1 to weld two weld marks, which not only ensures the consistency of the welding effect of the two weld marks, but also allows for a smaller volume of a single welding device 1, requires less space for arrangement, facilitates layout, and saves costs.

[0049] Furthermore, at least one of the first lower die 210 and the second lower die 220 can be adjusted along a first direction, and at least one of the first lower die 210 and the second lower die 220 can be adjusted along a second direction. With this configuration, the lower die assembly 200 can adjust its position according to the thickness and dimensions of the workpiece to be welded, thereby allowing for individual adjustment of the distance between the first lower die 210 and the first upper die 110, as well as the distance between the second lower die 220 and the second upper die 120, so that the lower die assembly 200 and the upper die assembly 100 can more stably clamp the workpiece to be welded. Furthermore, the first lower die 210 and the second lower die 220 are set separately. That is, the first lower die 210 and the first upper die 110 are a group, and the second lower die 220 and the second upper die 120 are a group. The two groups of welding heads can not interfere with each other, and there will be no interference between them during welding vibration. This makes it easier to keep the distance between the first lower die 210 and the first upper die 110 consistent with the distance between the second lower die 220 and the second upper die 120. The local pressure on the workpiece to be welded is more uniform, resulting in smaller differences in welding effect and thus meeting the welding requirements.

[0050] Thus, the welding device 1 according to the present utility model embodiment can realize two-stage welding, the welding effect of the two-stage welding is more consistent, the arrangement space requirement of the welding device 1 is small, and it is easy to arrange. Moreover, the position of the first lower die 210 and the second lower die 220 can be adjusted separately to avoid uneven local pressure on the workpiece to be welded, resulting in a better welding effect.

[0051] In some specific embodiments of this utility model, such as Figure 5 and Figure 6 As shown, the lower mold assembly 200 includes a base plate 230, a first base 240, and a second base 250.

[0052] The first base 240 is mounted on the base plate 230, and the first lower mold 210 is rotatably fixed to the first base 240. The second base 250 is mounted on the base plate 230 and is spaced apart from the first base 240 along the first direction. The second lower mold 220 is rotatably fixed to the second base 250.

[0053] At least one of the first base 240 and the second base 250 is movable along a first direction.

[0054] Wherein, at least one of the first base 240 and the second base 250 is movable along the first direction, meaning that one of the first base 240 and the second base 250 can be fixed to the base plate 230, and the other of the first base 240 and the second base 250 can move along the first direction, or both the first base 240 and the second base 250 can move on the base plate 230 along the first direction. By changing the position of the first base 240 and the second base 250 on the base plate 230, the spacing between the first lower mold 210 and the second lower mold 220 along the first direction can be adjusted. In this way, the first lower mold 210 and the second lower mold 220 dynamically adjust the spacing to match different upper mold assemblies 100, thus making the lower mold assembly 200 more adaptable.

[0055] In addition, the first base 240 and the second base 250 are installed at intervals along the first direction on the base plate 230. This can avoid positional interference between the first base 240 and the second base 250. When the first lower mold 210 is fixed to the first base 240 and the second lower mold 220 is fixed to the second base 250, the first lower mold 210 and the second lower mold 220 can be arranged at intervals along the first direction. This can ensure that when the first upper mold 110 and the first lower mold 210 are welding a part of the workpiece to be welded, the welding operations of the second upper mold 120 and the second lower mold 220 on the other part of the workpiece to be welded will not interfere with each other, making welding more convenient.

[0056] Furthermore, such as Figure 5 As shown, the base plate 230 is provided with a plurality of first fixing holes, and the first base 240 is provided with a plurality of first waist holes 241. The plurality of first waist holes 241 and the plurality of first fixing holes are connected one-to-one by a first fastener, and the first fastener is adjustable along a first direction within the first waist hole 241.

[0057] And / or, the base plate 230 is provided with a plurality of second fixing holes, and the second base 250 is provided with a plurality of second waist holes 251. The plurality of second waist holes 251 and the plurality of second fixing holes are connected one-to-one by a second fastener, and the second fastener is adjustable in the second waist hole 251 along the first direction.

[0058] For example, the first fastener and the second fastener can be bolts. Both the first slotted hole 241 and the second slotted hole 251 can be constructed as elongated holes extending along a first direction.

[0059] Specifically, the first fastener passes through the corresponding first waist hole 241 and the first fixing hole. Through the cooperation between the first fastener and the first fixing hole, the first base 240 can be stably connected to the base plate 230. Furthermore, when the position of the first base 240 relative to the base plate 230 in the first direction is changed, the first fastener can be fixed at different positions within the first waist hole 241, thereby allowing the first base 240 to move along the first direction on the base plate 230. In other words, with the cooperation of the first fastener with the first fixing hole and the first waist hole 241, the position of the first base 240 relative to the base plate 230 in the first direction can be adjusted.

[0060] Similarly, the second fastener passes through the corresponding second waist hole 251 and second fixing hole. Through the cooperation between the second fastener and the second fixing hole, the second base 250 can be stably connected to the base plate 230. Furthermore, when the position of the second base 250 relative to the base plate 230 in the first direction is changed, the second fastener can be fixed at different positions within the second waist hole 251, thereby allowing the second base 250 to move along the first direction on the base plate 230. In other words, with the cooperation of the second fastener with the second fixing hole and the second waist hole 251, the position of the second base 250 relative to the base plate 230 in the first direction can be adjusted.

[0061] In some specific embodiments of this utility model, such as Figure 5 As shown, a plurality of first waist holes 241 are respectively adjacent to opposite sides of the width direction of the first base 240; and / or, a plurality of second waist holes 251 are respectively adjacent to opposite sides of the width direction of the second base 250.

[0062] The width direction of the first base 240 can be perpendicular to the first direction. Furthermore, a plurality of first waist holes 241 located on the same side can be spaced apart along the first direction, and a plurality of second waist holes 251 located on the same side can also be spaced apart along the first direction.

[0063] This configuration allows multiple first waist holes 241 to be distributed at multiple locations on the first base 240, thereby improving the connection stability between the first base 240 and the base plate 230, and making the fit between the first lower mold 210 and the first upper mold 110 more stable. Similarly, multiple second waist holes 251 can be distributed at multiple locations on the second base 250, thereby improving the connection stability between the second base 250 and the base plate 230, and making the fit between the second lower mold 220 and the second upper mold 120 more stable.

[0064] In some specific embodiments of this utility model, such as Figure 1 and Figure 5As shown, the movable distance of the first base 240 and / or the second base 250 along the first direction is L, where L satisfies: 20mm≤L≤60mm.

[0065] The movable distance of the first base 240 along the first direction can be 10mm to 30mm, and the movable distance of the second base 250 along the first direction can also be 10mm to 30mm.

[0066] This design has two advantages. First, it avoids the movable distance L of the first base 240 and / or the second base 250 along the first direction being too small, thus ensuring a larger adjustable range of distance between the first base 240 and the second base 250. That is, it allows for a larger adjustable range of distance between the first lower mold 210 and the second lower mold 220, enabling the lower mold assembly 200 to adapt to more specifications of the upper mold assembly 100, thus increasing its applicability. Second, it avoids the movable distance L of the first base 240 and / or the second base 250 along the first direction being too large. It is understandable that commonly used upper mold assemblies 100 do not need to match the first lower mold 210 and the second lower mold 220 with excessively large distances. This design does not result in a waste of structural design, and the length of the waist hole is not too long, which is beneficial to improving the structural strength of the base plate 230. The base plate 230 provides better stability for fixing the first base 240 and the second base 250.

[0067] In some specific embodiments of this utility model, such as Figures 4-6 As shown, both the first base 240 and the second base 250 include an outer frame 242 and a base body 243.

[0068] The outer frame 242 is fixed to the base plate 230, the base body 243 is movably fixed inside the outer frame 242 along the second direction, the outer frame 242 covers the base body 243 circumferentially, the first lower mold 210 is rotatably fixed to the base body 243 of the first base 240, and the second lower mold 220 is rotatably fixed to the base body 243 of the second base 250.

[0069] By separating the first base 240 and the second base 250 into an outer frame 242 and a base body 243, the structure of the first base 240 and the second base 250 can be simplified, and the assembly of the first base 240 and the second base 250 with the base plate 230 can be facilitated. Moreover, the base body 243 is movably fixed within the outer frame 242 along the second direction, which allows adjustment of the height of the base body 243 along the second direction, thereby allowing adjustment of the distance between the first lower mold 210 and the first upper mold 110 in the second direction, as well as the distance between the second lower mold 220 and the second upper mold 120 in the second direction.

[0070] Furthermore, such as Figures 4-6As shown, the lower mold assembly 200 also includes a first adjusting bolt 260 and a second adjusting bolt 270. The base body 243 of the first base 240 is provided with a first bolt hole 244 extending in the second direction. The first adjusting bolt 260 passes through the first bolt hole 244 and abuts against the base plate 230. The first adjusting bolt 260 is used to adjust the height of the base body 243 of the first base 240 in the second direction.

[0071] And / or, the lower mold assembly 200 also includes a second adjusting bolt 270, the base body 243 of the second base 250 is provided with a second bolt hole 245 extending in a second direction, the second adjusting bolt 270 passes through the second bolt hole 245 and abuts against the base plate 230, and the second adjusting bolt 270 is used to adjust the height of the base body 243 of the second base 250 in the second direction.

[0072] Specifically, the portion of the upper end of the first adjusting bolt 260 extending beyond the base body 243 constitutes its effective length. When the first adjusting bolt 260 is rotated clockwise, its effective length decreases, allowing the first base 240 to move upwards along the second direction. This reduces the gap between the first lower die 210 and the first upper die 110. Conversely, when the first adjusting bolt 260 is rotated counterclockwise, its effective length increases, allowing the first base 240 to move downwards along the second direction. This increases the gap between the first lower die 210 and the first upper die 110. By rotating the first adjusting bolt 260, the distance between the first lower die 210 and the first upper die 110 along the second direction can be changed. This allows for flexible adjustment of the distance between the first lower die 210 and the first upper die 110 along the second direction according to the thickness of the workpiece to be welded, enabling the lower die assembly 200 and the upper die assembly 100 to better clamp and weld the workpiece.

[0073] Similarly, the portion of the upper end of the second adjusting bolt 270 extending beyond the base body 243 constitutes its effective length. When the second adjusting bolt 270 is rotated clockwise, its effective length decreases, allowing the second base 250 to move upwards along the second direction. This reduces the gap between the second lower die 220 and the second upper die 120. Conversely, when the second adjusting bolt 270 is rotated counterclockwise, its effective length increases, allowing the second base 250 to move downwards along the second direction. This increases the gap between the second lower die 220 and the second upper die 120. By rotating the second adjusting bolt 270, the distance between the second lower die 220 and the second upper die 120 along the second direction can be changed. This allows for flexible adjustment of the distance between the second lower die 220 and the second upper die 120 along the second direction according to the thickness of the workpiece to be welded, enabling the lower die assembly 200 and the upper die assembly 100 to better clamp and weld the workpiece.

[0074] In some specific embodiments of this utility model, such as Figure 5 and Figure 6 As shown, the lower mold assembly 200 also includes a first bracket 280 and a second bracket 290.

[0075] One end of the first bracket 280 is rotatably connected to the first base 240, and the other end of the first bracket 280 extends out of the first base 240 toward the second base 250. The first lower mold 210 is connected to the other end of the first bracket 280. One end of the second bracket 290 is rotatably connected to the second base 250, and the other end of the second bracket 290 extends out of the second base 250 toward the first base 240. The second lower mold 220 is connected to the other end of the second bracket 290.

[0076] The first base 240 can support and fix the first bracket 280, and the other end of the first bracket 280 extends out of the first base 240. In this way, when the first lower mold 210 is connected to the other end of the first bracket 280, positional interference between the first lower mold 210 and the first base 240 can be avoided. When the first lower mold 210 is connected to the other end of the first bracket 280, the first lower mold 210 and the first bracket 280 can rotate synchronously with the first base 240.

[0077] Similarly, the second base 250 can support and fix the second bracket 290, and the other end of the second bracket 290 extends out of the first base 240. In this way, when the second lower mold 220 is connected to the other end of the second bracket 290, positional interference between the second lower mold 220 and the second base 250 can be avoided. When the second lower mold 220 is connected to the other end of the second bracket 290, the second lower mold 220 can rotate synchronously with the second bracket 290 relative to the second base 250.

[0078] Furthermore, such as Figure 5 and Figure 6 As shown, the first bracket 280 includes a first rotating shaft 281 and a first mounting plate 282 connected to each other. The first rotating shaft 281 is rotatably connected to the first base 240 through a plurality of first bearings 285. The first lower mold 210 is connected to the first mounting plate 282. The second bracket 290 includes a second rotating shaft 291 and a second mounting plate 292 connected to each other. The second rotating shaft 291 is rotatably connected to the second base 250 through a plurality of second bearings 295. The second lower mold 220 is connected to the second mounting plate 292.

[0079] The first rotating shaft 281 is rotatably connected to the first base 240 via the first bearing 285. This allows the first lower mold 210 to rotate more smoothly relative to the first base 240 when it is connected to the first bracket 280. Furthermore, by providing a first mounting plate 282, the cross-sectional area of ​​which can be larger than that of the first rotating shaft 281, the first mounting plate 282 can better support and fix the first lower mold 210. The cross-sectional shape of the first mounting plate 282 can be the same as or adapted to the cross-sectional shape of the first lower mold 210, further improving the connection stability between the first lower mold 210 and the first mounting plate 282, thereby making the first lower mold 210 more stably fixed to the first bracket 280.

[0080] Similarly, the second rotating shaft 291 is rotatably connected to the second base 250 via the second bearing 295. This allows the second lower mold 220 to rotate more smoothly relative to the second base 250 when connected to the second bracket 290. Furthermore, by providing the second mounting plate 292, the cross-sectional area of ​​which can be larger than that of the second rotating shaft 291, the second mounting plate 292 can better support and fix the second lower mold 220. The cross-sectional shape of the second mounting plate 292 can be the same as or adapted to the cross-sectional shape of the second lower mold 220, further improving the connection stability between the second lower mold 220 and the second mounting plate 292, thereby making the second lower mold 220 more stably fixed to the second bracket 290.

[0081] In some specific embodiments of this utility model, such as Figure 3 and Figure 6 As shown, the first mounting plate 282 has a plurality of first connecting holes 283 arranged circumferentially along the first mounting plate 282, and the first lower mold 210 has a plurality of second connecting holes 211. The plurality of first connecting holes 283 and the plurality of second connecting holes 211 are connected one-to-one by first pins 284. In this way, not only can the first lower mold 210 and the first mounting plate 282 be connected by the first pins 284, but the first pins 284 can also be used to pre-position the assembly of the first lower mold 210 and the first mounting plate 282, thereby simplifying the installation steps of the first lower mold 210 and the first mounting plate 282 and improving the installation efficiency. Furthermore, a first guide sleeve can be provided in the first connecting hole 283 and / or the second connecting hole 211. In this way, the first guide sleeve can be used to stably connect the first pin 284 with the first connecting hole 283 and the second connecting hole 211, thereby making the first lower mold 210 stably fixed to the first mounting plate 282 and ensuring the concentricity of the first lower mold 210 and the first mounting plate 282.

[0082] Similarly, the second mounting plate 292 is provided with a plurality of third connecting holes 293 arranged circumferentially along the second mounting plate 292, and the second lower mold 220 is provided with a plurality of fourth connecting holes 221. The plurality of third connecting holes 293 and the plurality of fourth connecting holes 221 are connected one-to-one by the second pins 294. In this way, not only can the second lower mold 220 and the second mounting plate 292 be connected by the second pins 294, but the second pins 294 can also be used to pre-position the assembly of the second lower mold 220 and the second mounting plate 292, thereby simplifying the installation steps of the second lower mold 220 and the second mounting plate 292 and improving the installation efficiency. Furthermore, a second guide sleeve can be provided in the third connecting hole 293 and / or the fourth connecting hole 221. This allows the second pin 294 to be stably connected to the third connecting hole 293 and the fourth connecting hole 221, thereby allowing the second lower mold 220 to be stably fixed to the second mounting plate 292 and ensuring the concentricity of the second lower mold 220 and the second mounting plate 292.

[0083] In some specific embodiments of this utility model, such as Figure 6 As shown, the first lower mold 210 is provided with a first conical surface 212 and a first toothed surface 213. The first conical surface 212 is located on the side of the first toothed surface 213 away from the second lower mold 220 and protrudes from the first toothed surface 213. It is also away from the second lower mold 220 along the axial direction of the first lower mold 210. The outer diameter of the first conical surface 212 is increased.

[0084] With this configuration, when the first lower die 210 and the first upper die 110 are welding parts of the workpiece to be welded, the first conical surface 212 can abut against the first upper die 110 in a direction away from the second lower die 220 along the axial direction of the first lower die 210, so as to ensure that the welding position of the first upper die 110 is always in contact with the first toothed surface 213 of the first lower die 210. This can make the pressure distribution of the workpiece to be welded uniform and stable during the welding process, so that the weld point is flatter and wrinkle-free, and the welding quality is higher.

[0085] Furthermore, the second lower mold 220 is provided with a second conical surface 222 and a second toothed surface 223. The second conical surface 222 is located on the side of the second toothed surface 223 away from the first lower mold 210 and protrudes from the second toothed surface 223. It is also located away from the first lower mold 210 along the axial direction of the second lower mold 220. The outer diameter of the second conical surface 222 is increased.

[0086] With this configuration, when the second lower die 220 and the second upper die 120 are welding another part of the workpiece to be welded, the second conical surface 222 can abut against the second upper die 120 in a direction away from the first lower die 210 along the axial direction of the second lower die 220, so as to ensure that the welding position of the second upper die 120 is always in contact with the second toothed surface 223 of the second lower die 220. This can make the pressure distribution of the workpiece to be welded uniform and stable during the welding process, so that the weld point is flatter and wrinkle-free, and the welding quality is higher.

[0087] The first conical surface 212 abuts the first upper die 110 away from the second lower die 220 along the axial direction of the first lower die 210, and the second conical surface 222 abuts the second upper die 120 away from the first lower die 210 along the axial direction of the second lower die 220. Thus, when the upper die assembly 100 shifts in one direction along the first direction, the first conical surface stops the first upper die 110; and when the upper die assembly 100 shifts in another direction along the first direction, the second conical surface stops the second upper die 120. This ensures that the welding position of the first upper die 110 is always in contact with the first toothed surface 213 of the first lower die 210, and the welding position of the second upper die 120 is always in contact with the second toothed surface 223 of the second lower die 220. This results in uniform pressure on the workpiece during welding, reducing deviation and making the weld point smoother.

[0088] In some specific embodiments of this utility model, such as Figure 6 As shown, the first lower die 210 also has a first machining surface 214, which is located on the side of the first toothed surface 213 adjacent to the second lower die 220. The outer diameter of the first machining surface 214 is smaller than the outer diameter of the first toothed surface 213, and it is closer to the second lower die 220 along the axial direction of the first lower die 210, thus reducing the outer diameter of the first machining surface 214. This simplifies the structure of the first lower die 210 and facilitates removal of the die along the axial direction of the first lower die 210 after machining.

[0089] Furthermore, the second lower die 220 is also provided with a second machining surface 224, which is located on the side of the second toothed surface 223 adjacent to the first lower die 210. The outer diameter of the second machining surface 224 is smaller than the outer diameter of the second toothed surface 223, and it is closer to the first lower die 210 along the axial direction of the second lower die 220, thus reducing the outer diameter of the second machining surface 224. This simplifies the structure of the second lower die 220 and facilitates removal of the die along the axial direction of the second lower die 220 after machining.

[0090] In some specific embodiments of this utility model, such as Figure 1 and Figure 7As shown, the upper mold assembly 100 also includes a connector 130, which is disposed between the first upper mold 110 and the second upper mold 120 and connected to the first upper mold 110 and the second upper mold 120 respectively.

[0091] For example, the connector 130 can be connected to the first upper mold 110 and the second upper mold 120 via a flexible screw to ensure the stability and reliability of the connection. In this way, the first upper mold 110 and the second upper mold 120 can be connected into a single unit via the connector 130. Furthermore, the distance between the first upper mold 110 and the second upper mold 120 can be changed by using different connectors 130. For example, the adjustable size of the connector 130 is 20mm to 60mm. That is, different upper mold assemblies 100 can be formed by using different connectors 130, allowing the welding device 1 to process different workpieces, thus increasing its applicability.

[0092] Other configurations and operations of the welding apparatus 1 according to the embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0093] In the description of this specification, references to terms such as "specific embodiment" and "specific example" refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example that is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0094] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A welding apparatus (1), characterized in that, The welding device (1) has a first direction and a second direction, the first direction and the second direction being perpendicular to each other, and the welding device (1) includes: The upper mold assembly (100) includes a first upper mold (110) and a second upper mold (120) spaced apart along the first direction. The lower mold assembly (200) includes a first lower mold (210) and a second lower mold (220) spaced apart along the first direction. The first lower mold (210) and the first upper mold (110) are used to clamp and weld a portion of the workpiece to be welded, and the second lower mold (220) and the second upper mold (120) are used to clamp and weld another portion of the workpiece to be welded. Wherein, at least one of the first lower mold (210) and the second lower mold (220) is adjustable along the first direction, and at least one of the first lower mold (210) and the second lower mold (220) is adjustable along the second direction.

2. The welding apparatus (1) according to claim 1, characterized in that, The lower mold assembly (200) includes: Base plate (230); The first base (240) is mounted on the base plate (230), and the first lower mold (210) is rotatably fixed to the first base (240). The second base (250) is mounted on the base plate (230) and spaced apart from the first base (240) along the first direction. The second lower mold (220) is rotatably fixed to the second base (250). At least one of the first base (240) and the second base (250) is movable along the first direction.

3. The welding apparatus (1) according to claim 2, characterized in that, The base plate (230) is provided with a plurality of first fixing holes, and the first base (240) is provided with a plurality of first waist holes (241). The plurality of first waist holes (241) and the plurality of first fixing holes are connected one-to-one by first fasteners, and the first fasteners are adjustable along the first direction within the first waist holes (241); and / or, The base plate (230) is provided with a plurality of second fixing holes, and the second base (250) is provided with a plurality of second waist holes (251). The plurality of second waist holes (251) and the plurality of second fixing holes are connected one-to-one by a second fastener, and the second fastener is adjustable along the first direction within the second waist hole (251).

4. The welding apparatus (1) according to claim 3, characterized in that, The plurality of first waist holes (241) are respectively adjacent to opposite sides in the width direction of the first base (240); and / or, The plurality of second waist holes (251) are respectively adjacent to opposite sides of the second base (250) in the width direction.

5. The welding apparatus (1) according to claim 2, characterized in that, The movable distance of the first base (240) and / or the second base (250) along the first direction is L, where L satisfies: 20mm≤L≤60mm.

6. The welding apparatus (1) according to claim 2, characterized in that, Both the first base (240) and the second base (250) include: The outer frame (242) is fixed to the base plate (230); The base body (243) is movably fixed within the outer frame (242) along the second direction. The outer frame (242) covers the base body (243) circumferentially. The first lower mold (210) is rotatably fixed to the base body (243) of the first base (240), and the second lower mold (220) is rotatably fixed to the base body (243) of the second base (250).

7. The welding apparatus (1) according to claim 6, characterized in that, The lower mold assembly (200) also includes: A first adjusting bolt (260) is provided, wherein the base body (243) of the first base (240) is provided with a first bolt hole (244) extending along the second direction, the first adjusting bolt (260) passes through the first bolt hole (244) and abuts against the base plate (230), and the first adjusting bolt (260) is used to adjust the height of the base body (243) of the first base (240) in the second direction; and / or, The second adjusting bolt (270) is provided in the base body (243) of the second base (250) which extends in the second direction. The second adjusting bolt (270) passes through the second bolt hole (245) and abuts against the base plate (230). The second adjusting bolt (270) is used to adjust the height of the base body (243) of the second base (250) in the second direction.

8. The welding apparatus (1) according to claim 2, characterized in that, The lower mold assembly (200) also includes: A first support (280) is rotatably connected at one end to a first base (240), and the other end of the first support (280) extends from the first base (240) toward a second base (250), and a first lower mold (210) is connected to the other end of the first support (280); A second support (290) is rotatably connected at one end to a second base (250), and the other end of the second support (290) extends from the second base (250) toward the first base (240), and a second lower mold (220) is connected to the other end of the second support (290).

9. The welding apparatus (1) according to claim 8, characterized in that, The first bracket (280) includes a first rotating shaft (281) and a first mounting plate (282) connected to each other. The first rotating shaft (281) is rotatably connected to the first base (240) through a plurality of first bearings (285). The first lower mold (210) is connected to the first mounting plate (282). The second bracket (290) includes a second rotating shaft (291) and a second mounting plate (292) connected to each other. The second rotating shaft (291) is rotatably connected to the second base (250) through a plurality of second bearings (295). The second lower mold (220) is connected to the second mounting plate (292).

10. The welding apparatus (1) according to claim 9, characterized in that, The first mounting plate (282) is provided with a plurality of first connecting holes (283) arranged circumferentially along the first mounting plate (282), and the first lower mold (210) is provided with a plurality of second connecting holes (211). The plurality of first connecting holes (283) and the plurality of second connecting holes (211) are connected one-to-one by first pins (284); and, The second mounting plate (292) is provided with a plurality of third connecting holes (293) arranged around the second mounting plate (292), and the second lower mold (220) is provided with a plurality of fourth connecting holes (221). The plurality of third connecting holes (293) and the plurality of fourth connecting holes (221) are connected one-to-one by a second pin (294).

11. The welding apparatus (1) according to claim 1, characterized in that, The first lower die (210) is provided with a first conical surface (212) and a first toothed surface (213). The first conical surface (212) is located on the side of the first toothed surface (213) away from the second lower die (220) and protrudes from the first toothed surface (213). It is also located away from the second lower die (220) along the axial direction of the first lower die (210). The outer diameter of the first conical surface (212) is increased. The second lower mold (220) is provided with a second conical surface (222) and a second toothed surface (223). The second conical surface (222) is located on the side of the second toothed surface (223) away from the first lower mold (210) and protrudes from the second toothed surface (223). It is located away from the first lower mold (210) along the axial direction of the second lower mold (220). The outer diameter of the second conical surface (222) is increased.

12. The welding apparatus (1) according to claim 11, characterized in that, The first lower die (210) is further provided with a first machining surface (214), which is located on the side of the first toothed surface (213) adjacent to the second lower die (220). The outer diameter of the first machining surface (214) is smaller than the outer diameter of the first toothed surface (213), and it is closer to the second lower die (220) along the axial direction of the first lower die (210). The outer diameter of the first machining surface (214) decreases. The second lower mold (220) is also provided with a second processing surface (224). The second processing surface (224) is located on the side of the second toothed surface (223) adjacent to the first lower mold (210). The outer diameter of the second processing surface (224) is smaller than the outer diameter of the second toothed surface (223), and it is close to the first lower mold (210) along the axial direction of the second lower mold (220). The outer diameter of the second processing surface (224) is reduced.

13. The welding apparatus (1) according to claim 1, characterized in that, The upper mold assembly (100) also includes: A connector (130) is disposed between the first upper mold (110) and the second upper mold (120) and is connected to the first upper mold (110) and the second upper mold (120) respectively.

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