A welding device with adjustable upper electrode position

Abstract

This utility model discloses a welding device with an adjustable upper electrode position, including a welding frame. A pressure assembly is located at the top of the welding frame, and an upper electrode assembly is connected to the bottom of the pressure assembly via a mounting block. A lower electrode assembly is positioned directly below the upper electrode assembly, and the lower electrode assembly is fixedly mounted on the welding frame via a clamping block. A lateral displacement mechanism is provided at the bottom of the mounting block for the upper electrode assembly. The mounting block and the clamping block are connected to a welding transformer via flexible copper strips to form a welding circuit. This utility model allows the lower electrode to first adhere to the workpiece, requiring only one positioning. Through the new welding structure, after welding the first weld point, the horizontal movement of the weld point is achieved by a cylinder or electric cylinder in the horizontal direction of the frame, improving welding stability and cycle time.

Description

Technical Field

[0001] This utility model relates to the field of resistance welding technology, and in particular to a welding device with an adjustable upper electrode position. Background Technology

[0002] For welding multi-layer tabs and covers of power batteries, such as blade series or some square cover plates, there are generally two welding points on the left and right. The traditional upper and lower welding mechanism is usually used and mounted on a three-axis moving platform mechanism. The three-axis moving platform is driven by a servo motor to find the welding position. The logic is to first move to the bottom of the first welding point, then lift it along the Z-axis to fit it close to the tab to be welded. Then, a cylinder or servo electric cylinder is placed directly above the welding electrode to press down for welding. After welding, the cylinder or servo electric cylinder is opened, the three-axis moving platform is lowered, and then moves to the second welding point to continue the previous action. This will result in low welding stability and cycle time. Utility Model Content

[0003] To address the aforementioned technical problems, a welding apparatus with an adjustable upper electrode position is provided.

[0004] To achieve the above objectives, this utility model discloses a welding device with an adjustable upper electrode position, including a welding frame. A pressure assembly is provided at the top of the welding frame, and an upper electrode assembly is connected to the bottom of the pressure assembly via a mounting block. A lower electrode assembly is provided directly below the upper electrode assembly. The side of the lower electrode assembly is fixedly mounted on the welding frame via a clamping block. A lateral displacement mechanism is provided at the bottom of the upper electrode assembly on the mounting block. The mounting block and the clamping block are respectively connected to a welding transformer via flexible copper strips to form a welding circuit.

[0005] Furthermore, the lateral displacement mechanism includes a slide rail horizontally arranged at the bottom of the mounting block, a transition connecting plate installed at the bottom of the slider on the surface of the slide rail, the rear of the transition connecting plate being connected to the bottom of the mounting block via a drag chain, an upper electrode seat installed at the bottom of the transition connecting plate, an upper electrode head connected to the bottom of the upper electrode seat via a locking nut, and an adjusting cylinder connected to the side of the transition connecting plate.

[0006] Furthermore, the end face of the adjusting cylinder is fixed to the side of the mounting block by a cylinder fixing plate. The cylinder fixing plate includes a first connecting part fixed to the end face of the adjusting cylinder, a second connecting part above the first connecting part that abuts against the side of the mounting block, two third connecting parts located on both sides of the slide rail below the second connecting part, and a fourth connecting part protruding outward on the side of the first connecting part.

[0007] Furthermore, a limiting mechanism is installed on the fourth connecting part. The limiting mechanism includes a vertically arranged first limit switch and a first limiting cylinder. A T-shaped block is installed below the mounting block on the side of the fourth connecting part. A second limit switch and a second limiting cylinder are installed on the T-shaped block, which are arranged opposite to the first limit switch and opposite to the first limiting cylinder.

[0008] Furthermore, a limiting plate is installed on the side of the transition connecting plate near the adjusting cylinder. The limiting plate has a slot at its center that engages with the end of the push rod at the output end of the adjusting cylinder. A baffle extends outward from the edge of the limiting plate between the first limit switch and the second limit switch.

[0009] Furthermore, the bottom of the transition connecting plate is provided with a sliding groove that is perpendicular to the stroke direction of the adjusting cylinder, and the top of the upper electrode seat is installed in the sliding groove through a waist-shaped groove.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model discloses a welding device with an adjustable upper electrode position, which can realize that the lower electrode side first attaches to the workpiece to be welded. Only one position needs to be found. Through the new welding structure, after the first weld point is welded, the horizontal direction of the frame is achieved by a cylinder or electric cylinder to realize the translation of the weld point, thereby improving the welding stability and cycle time. Attached Figure Description

[0011] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the upper electrode assembly of this utility model.

[0014] Figure 3 This is a schematic diagram of the upper electrode assembly of this utility model from another perspective.

[0015] Figure 4 This is a schematic diagram of the cylinder mounting block of this utility model.

[0016] Figure 5 This is a schematic diagram of the limiting plate of this utility model.

[0017] In the diagram: 1 is the welding frame; 2 is the pressurizing assembly; 3 is the upper electrode assembly; 31 is the slide rail; 32 is the transition connecting block; 33 is the drag chain; 34 is the upper electrode seat; 35 is the upper electrode head; 36 is the adjusting cylinder; 37 is the limiting mechanism; 371 is the first limit switch; 372 is the first limit cylinder; 373 is the second limit switch; 374 is the second limit cylinder; 375 is the T-block; 38 is the cylinder mounting plate; 381 is the first connecting part; 382 is the second connecting part; 383 is the third connecting part; 384 is the fourth connecting part; 39 is the limiting plate; 4 is the lower electrode assembly; 5 is the mounting block; 6 is the clamping block. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] One embodiment of this utility model is as follows: Figure 1 As shown, a pressure assembly 2 is provided on the top of the welding frame 1. The bottom of the pressure assembly 2 is connected to the upper electrode assembly 3 via a mounting block 5. The lower electrode assembly 4 is provided directly below the upper electrode assembly 3. The side of the lower electrode assembly 4 is fixedly mounted on the welding frame 1 via a clamping block 6. The upper electrode assembly 3 is provided with a lateral displacement mechanism at the bottom of the mounting block 5. The mounting block 5 and the clamping block 6 are respectively connected to the welding transformer via flexible copper strips to form a welding circuit. This allows the lower electrode side to first adhere to the workpiece to be welded. Only one position needs to be found. Through the new welding structure, after the first weld point is welded, the horizontal direction of the frame is achieved by a cylinder or electric cylinder to move the weld point, thereby improving the welding stability and cycle time.

[0020] like Figure 2 and Figure 3As shown, the lateral displacement mechanism includes a slide rail 31 horizontally positioned at the bottom of the mounting block 5. A transition connecting plate 32 is mounted on the bottom of the slider on the surface of the slide rail 31. The rear of the transition connecting plate 32 is connected to the bottom of the mounting block 5 via a drag chain 33 to ensure lateral stability. An upper electrode seat 34 is mounted on the bottom of the transition connecting plate 32. The upper electrode seat adopts a quick-change structure. An upper electrode head 35 is connected to the bottom of the upper electrode seat 34 via a locking nut, allowing for the replacement of the appropriate electrode head according to different welding conditions. An adjusting cylinder 36 is connected to the side of the transition connecting plate 32. After welding is completed at the welding mark position, the adjusting cylinder pushes the transition connecting plate to move the upper electrode head laterally. The lateral movement distance is positively correlated with the length of the slide rail. The device moves to the next welding mark position to continue welding. Compared with the traditional three-axis displacement mechanism that controls the movement of the entire component, this application relies on the lateral displacement of the upper electrode assembly to achieve position adjustment, ensuring welding stability and reducing equipment energy consumption.

[0021] like Figure 4 As shown, the end face of the adjusting cylinder 36 is fixed to the side of the mounting block 5 by the cylinder fixing plate 38. The cylinder fixing plate 38 includes a first connecting part 381 fixed to the end face of the adjusting cylinder 36, a second connecting part 382 that abuts against the side of the mounting block 5 is provided above the first connecting part 381, two third connecting parts 383 located on both sides of the slide rail 31 are provided below the second connecting part 382, ​​and a fourth connecting part 384 that protrudes outward is provided on the side of the first connecting part 381 to improve the connection stability.

[0022] A limiting mechanism 37 is installed on the fourth connecting part 384. The limiting mechanism 37 includes a vertically arranged first limit switch 371 and a first limiting cylinder 372. A T-shaped block 375 is installed below the mounting block 5 on the side of the fourth connecting part 384. A second limit switch 373, which is opposite to the first limit switch 371, and a second limiting cylinder 374, which is opposite to the first limiting cylinder 372, are installed on the T-shaped block 375. Figure 5 As shown, a limit plate 39 is installed on the side of the transition connecting plate 32 near the adjusting cylinder 36. The center of the limit plate 39 is provided with a slot that is engaged and fixed with the end of the push rod at the output end of the adjusting cylinder 36. A baffle is provided between the first limit switch 371 and the second limit switch 373 extending outward from the edge of the limit plate 39. When the adjusting cylinder pushes the upper electrode assembly to move horizontally, when the limit plate moves to one side and abuts against the push rod of the corresponding limit cylinder, the limit cylinder provides a buffer until it abuts against the forming switch, triggering an alarm signal and providing overtravel protection for the operator. The limit is set by the limit switches on both sides to avoid the problem of derailment and overtravel.

[0023] The bottom of the transition connecting plate 32 is provided with a sliding groove that is perpendicular to the stroke direction of the adjusting cylinder 36. The top of the upper electrode seat 34 is installed in the sliding groove through a waist-shaped groove. The position of the upper electrode seat can be finely adjusted through the waist-shaped groove structure to meet the welding requirements of different working conditions.

[0024] Several points need to be clarified: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly, and can refer to mechanical or electrical connections, or internal connections between two components, or direct connections. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships, and the relative positional relationships may change when the absolute position of the described objects changes. Second, in this document, relational terms such as "first" and "second" are only used to distinguish one entity from another entity, and do not necessarily require or imply any such actual relationship or order between these entities.

[0025] The above examples are merely illustrative of this utility model and do not constitute a limitation on the scope of protection of this utility model. All designs that are the same as or similar to this utility model are within the scope of protection of this utility model.

Claims

1. A welding device with adjustable position of the upper electrode, comprising a welding frame (1), characterized in that, The welding frame (1) is provided with a pressure assembly (2) at the top. The pressure assembly (2) is connected to the upper electrode assembly (3) at the bottom through the mounting block (5). The lower electrode assembly (4) is provided directly below the upper electrode assembly (3). The side of the lower electrode assembly (4) is fixedly mounted on the welding frame (1) through the clamping block (6). The upper electrode assembly (3) is provided with a lateral displacement mechanism at the bottom of the mounting block (5). The mounting block (5) and the clamping block (6) are respectively connected to the welding transformer through flexible copper strips to form a welding circuit.

2. The welding apparatus of claim 1 wherein, The lateral displacement mechanism includes a slide rail (31) horizontally arranged at the bottom of the mounting block (5). A transition connecting plate (32) is installed at the bottom of the slider on the surface of the slide rail (31). The rear of the transition connecting plate (32) is connected to the bottom of the mounting block (5) by a drag chain (33). An upper electrode seat (34) is installed at the bottom of the transition connecting plate (32). An upper electrode head (35) is connected to the bottom of the upper electrode seat (34) by a locking nut. An adjusting cylinder (36) is connected to the side of the transition connecting plate (32).

3. The welding apparatus of claim 2, wherein the electrode positioner is configured to move the electrode along the electrode axis in response to the electrode position signal. The end face of the adjusting cylinder (36) is fixed to the side of the mounting block (5) by the cylinder fixing plate (38). The cylinder fixing plate (38) includes a first connecting part (381) fixed to the end face of the adjusting cylinder (36), a second connecting part (382) that abuts against the side of the mounting block (5) is provided above the first connecting part (381), two third connecting parts (383) located on both sides of the slide rail (31) are provided below the second connecting part (382), and a fourth connecting part (384) that protrudes outward is provided on the side of the first connecting part (381).

4. The welding apparatus of claim 3 wherein, A limiting mechanism (37) is installed on the fourth connecting part (384). The limiting mechanism (37) includes a vertically arranged first limit switch (371) and a first limiting cylinder (372). A T-shaped block (375) is installed below the mounting block (5) on the side of the fourth connecting part (384). A second limit switch (373) is installed on the T-shaped block (375) opposite to the first limit switch (371) and a second limiting cylinder (374) is installed on the T-shaped block (375) opposite to the first limiting cylinder (372).

5. The position adjustable electrode welding device according to claim 2, wherein The transition connecting plate (32) is equipped with a limiting plate (39) on the side near the regulating cylinder (36). The limiting plate (39) has a slot in the center that is engaged and fixed with the end of the push rod at the output end of the regulating cylinder (36). The edge of the limiting plate (39) extends outward with a baffle between the first limit switch (371) and the second limit switch (373).

6. A welding apparatus with an adjustable upper electrode position according to claim 2, characterized in that, The bottom of the transition connecting plate (32) is provided with a sliding groove that is perpendicular to the stroke direction of the adjusting cylinder (36), and the top of the upper electrode seat (34) is installed in the sliding groove through a waist-shaped groove.

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