CN220445452U - Automatic welding device and cell welding production line - Google Patents

Abstract

The application relates to an automatic welding device and a battery cell welding production line. The automatic welding device provided by the application comprises a welding mechanism, a conveying mechanism and a buffer mechanism. The transport mechanism comprises a first mounting frame, a conveying assembly and a reversing assembly, wherein the conveying assembly and the reversing assembly are arranged on the first mounting frame, the conveying assembly is used for conveying the electric core clamp, and the reversing assembly is used for transferring the electric core clamp on the conveying assembly to the welding mechanism. The buffer memory mechanism comprises a second mounting frame, a lifting component and a grabbing component, wherein the lifting component is arranged on the second mounting frame, and the lifting component is arranged on the second mounting frame and used for driving the grabbing component to move in a lifting mode above the reversing component, so that the grabbing component can grab the battery cell clamp from the reversing component and can put the grabbed battery cell clamp back to the reversing component. The automatic welding device provided by the application has the advantages that the collision of the transported battery core clamps can be avoided, the release period of the battery core clamps can be shortened, and then the welding efficiency of the battery core is improved.

Description

Automatic welding device and cell welding production line

Technical Field

The application relates to the technical field of lithium battery production, in particular to an automatic welding device and a battery cell welding production line.

Background

Along with the development of technology, the production mode of the cylindrical lithium battery is gradually changed from traditional manual manufacturing to mechanical automatic manufacturing, but the production process of the cylindrical lithium battery is complex, and the steps are numerous, so that the production efficiency of the cylindrical lithium battery still has a room for improvement.

In the welding process of the cylindrical battery cell, the positive electrode and the negative electrode of the battery cell are required to be welded with the nickel sheet, so that the welding times in the welding step are more, and the welding time is generally longer than the time required by the front-stage process and the rear-stage process. In order to meet the productivity requirement and improve the production line efficiency, a plurality of welding machines are arranged on the same production line by the traditional electric core welding line. However, if a plurality of welders are arranged on the same welding production line, it is possible that the front-end welders are performing welding work, the production line can only be stopped, so that the rear-end welders cannot receive the battery cell, or the rear-end welders are performing welding work, and the front-end welders are not receiving the battery cell and are empty. Therefore, the working states of the front and rear end welders are not easy to coordinate, the front and rear end welders are difficult to work simultaneously, the production efficiency is low, and the ever-increasing production requirements of the cylindrical lithium battery cannot be met. If one welding station is added to each welding machine, the production line is too long, and the space cost and the maintenance cost are increased.

Disclosure of Invention

Based on the above, it is necessary to provide an automatic welding device and a cell welding production line for solving the problem of low cell throwing efficiency on a cell welding production line.

In one aspect, the present application provides an automatic welding apparatus comprising:

a welding mechanism;

the conveying mechanism comprises a first mounting frame, a conveying assembly and a reversing assembly, wherein the conveying assembly and the reversing assembly are both arranged on the first mounting frame, the conveying assembly is used for conveying the electric core clamps, and the reversing assembly is used for transferring the electric core clamps on the conveying assembly to the welding mechanism;

the buffer mechanism comprises a second mounting frame, a lifting component and a grabbing component, wherein the lifting component is arranged on the second mounting frame and used for driving the grabbing component to move up and down above the reversing component, so that the grabbing component can grab the battery cell clamp from the reversing component and can put the grabbed battery cell clamp back to the reversing component.

In one embodiment, the lifting assembly comprises a linear guide rail, a sliding block and a first motor, wherein the linear guide rail is arranged on the second mounting frame, the sliding block is in sliding connection with the linear guide rail, the grabbing assembly is connected with the sliding block, and the first motor is used for driving the sliding block to move on the linear guide rail.

In one embodiment, the second mounting rack is provided with a containing groove, and the containing groove corresponds to the bottom end of the linear guide rail.

In one embodiment, the second mounting frame is provided with a groove sensor, the grabbing component is provided with an induction piece, when the lifting component drives the grabbing component to move up and down, the induction piece moves along with the grabbing component, and the induction piece can move to trigger the groove sensor.

In one embodiment, the buffer mechanism further includes an induction unit, the induction unit includes two correlation sensors, the two correlation sensors are disposed on the conveying assembly and are respectively located at two sides of the reversing assembly, and the correlation sensors are used for detecting whether the reversing assembly is loaded with the battery core fixture.

In one embodiment, the conveying assembly comprises two conveying chains and a second motor, wherein the conveying chains are wound on the first mounting frame, and the second motor is used for driving the conveying chains to circularly rotate.

In one embodiment, the reversing assembly comprises a conveying roller and a first jacking air cylinder, the first jacking air cylinder is arranged on the first mounting frame, the conveying roller is arranged between two conveying chains, the conveying roller is connected with the movable end of the first jacking air cylinder, and the first jacking air cylinder is used for driving the conveying roller to rise to a height higher than the height of the first mounting frame or descend to a height lower than the height of the conveying chains.

In one embodiment, the reversing assembly further comprises two first check blocks and two second jacking cylinders, the two first check blocks are respectively rotatably arranged on two sides of the conveying roller in the direction of the rotating shaft, the two second jacking cylinders are respectively connected with the first check blocks, and the two second jacking cylinders are respectively used for driving the first check blocks to rotate to be higher than or lower than the height where the conveying roller is located.

In one embodiment, the transport mechanism further comprises a blocking assembly comprising a blocking cylinder and a second stop, the blocking cylinder is disposed on a side of the first mounting frame away from the welding mechanism, the second stop is disposed on a movable end of the blocking cylinder, and the blocking cylinder is used for driving the second stop to extend toward the transfer roller to block the battery cell clamp from moving out of the transfer chain in a direction away from the welding mechanism.

On the other hand, the application provides a battery cell welding production line, including foretell automatic welder to and backward flow subassembly and lift transport subassembly.

The automatic welding device is characterized in that the buffer mechanism is arranged, the clamp is lifted away from the conveying mechanism, and the clamp moving out of the welding mechanism is prevented from colliding with the clamp on the conveying mechanism, so that the clamp throwing period is not required to be prolonged to avoid collision, the clamp throwing efficiency is improved, and the welding efficiency of the battery cell is greatly improved.

Drawings

Fig. 1 is a schematic structural diagram of an automatic welding device in an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a buffering mechanism in an embodiment of the present application.

Fig. 3 is a schematic structural view of a transporting mechanism according to an embodiment of the present application.

Fig. 4 is a schematic structural diagram of a reversing assembly according to an embodiment of the present application.

Fig. 5 is an enlarged schematic view at a in fig. 3.

Reference numerals illustrate:

100. a welding mechanism; 200. a transport mechanism; 210. a first mounting frame; 211. a second mounting plate; 2110. a groove-type mounting block; 220. a transfer assembly; 221. a conveyor chain; 222. a first stopper; 223. a second jacking cylinder; 230. a reversing assembly; 231. a first mounting plate; 232. a first jacking cylinder; 233. a conveying roller; 240. a blocking assembly; 241. blocking the cylinder; 242. a second stopper; 300. a buffer mechanism; 310. a second mounting frame; 311. a receiving groove; 312. a groove sensor; 320. a lifting assembly; 321. a linear guide rail; 322. a slide block; 323. a guide rail pair; 330. a grabbing component; 331. a longitudinal connecting plate; 332. a connecting block; 333. an induction piece; 334. a pneumatic finger cylinder; 335. a clamping jaw; 340. a correlation sensor; 400. and a reflow assembly.

Detailed Description

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that, if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., these terms refer to the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, for convenience of description and simplification of description only, and do not indicate or imply that the mechanism or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.

In this application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.

As described in the background art, it is difficult to control the speed of throwing the battery cells on the conventional battery cell welding line, and the working states of the front and rear end welding machines of the welding line cannot be coordinated, so the present application provides an automatic welding device as described below.

Referring to fig. 1 to 3, fig. 1 is a schematic structural view of an automatic welding device according to an embodiment of the present application, and fig. 2 and 3 are schematic structural views of a buffer mechanism and a transport mechanism according to fig. 1, respectively. An automatic welding device provided in an embodiment of the present application includes a welding mechanism 100, a transporting mechanism 200, and a buffering mechanism 300. The transport mechanism 200 includes a first mounting frame 210, a conveying assembly 220, and a reversing assembly 230, where the conveying assembly 220 and the reversing assembly 230 are both disposed on the first mounting frame 210, the conveying assembly 220 is used for conveying a core fixture (not shown), and the reversing assembly 230 is used for transferring the core fixture on the conveying assembly 220 to the welding mechanism 100; the buffer mechanism comprises a second mounting frame 310, a lifting component 320 and a grabbing component 330, wherein the lifting component 320 is arranged on the second mounting frame 310 and is used for driving the grabbing component 330 to lift and move above the reversing component 230, so that the grabbing component 330 can grab a cell fixture from the reversing component 230 and can put the grabbed cell fixture back to the reversing component 230.

Specifically, referring to fig. 1 and 3 together, and taking the positions of the components in fig. 1 as an example, in the exemplary embodiment, the welding mechanism 100 and the transporting mechanism 200 are both horizontally disposed on a large frame plate (not shown) to be stable. The conveying assembly 220 is a conveyor, the conveying assembly 220 includes two conveying chains 221 disposed in parallel, and the two conveying chains 221 are respectively laid on two sides of the first mounting frame 210, and it can be understood that the direction of the length of the conveying chain 221 is the transportation direction of the cell fixture on the conveying chain 221. The reversing assembly 230 is positioned between the two conveyor chains 221 with the transport direction perpendicular to the transport direction of the conveyor chains 221, it being understood that the reversing assembly 230 can shift the cell clamps to move along a direction perpendicular to the length of the conveyor chains 221. The welding mechanism 100 is disposed on the right side of the first mounting frame 210 and is positioned exactly in the transport direction of the reversing assembly 230. The second mounting frame 310 is also arranged on the large frame plate and is positioned on the left side of the first mounting frame 210, the second mounting frame 310 extends upwards, the lifting component 320 is arranged on one side, facing the first mounting frame 210, of the second mounting frame 310, the grabbing component 330 is arranged on the movable end of the lifting component 320 and is positioned right above the reversing component 230, the grabbing component 330 can be driven by the lifting component 320 to lift and move, when the grabbing component 330 moves downwards, the grabbing component 330 is close to the reversing component 230 to grab the battery cell clamp, and when the grabbing component 330 moves upwards, the grabbing component 330 is far away from the reversing component 230 to lift the battery cell clamp.

In operation, a first fixture (not shown) loaded with the cylindrical cell stack is transported to the reversing assembly 230 via the conveyor chain 221, and the reversing assembly 230 changes the moving direction of the first fixture, and drives the first fixture to move to the welding mechanism 100 to weld the cylindrical cell stack. At this time, a second gripper (not shown) is also transported onto the reversing assembly 230 via the conveyor chain 221, and the lifting assembly 320 drives the grabbing assembly 330 to move downward and grab the second gripper, and drives the grabbing assembly 330 to move upward, so that the second gripper is separated from the surface of the reversing assembly 230. Thus, after the cylindrical cell stack on the first clamp is welded, the first clamp is returned to the reversing assembly 230 and transported by the conveyor chain 221. After the first clamp leaves the reversing assembly 230, the lifting assembly 320 drives the grabbing assembly 330 to move downwards and replace the second clamp on the reversing assembly 230, and the reversing assembly 230 sends the second clamp into the welding mechanism 100 for welding.

According to the automatic welding device, through the buffer mechanism 300, the battery core clamp loaded with the cylindrical battery core group can be lifted upwards from the conveying mechanism 200, so that the battery core clamp which is welded is prevented from being collided with the battery core clamp which is not welded when being returned to the conveying mechanism 200, the period is not required to be prolonged for avoiding collision when the battery core clamp is thrown, the taking, placing and transporting efficiency of the battery core clamp is improved, and further the welding efficiency is greatly improved.

Referring to fig. 2, in some embodiments, the lifting assembly 320 includes a linear guide 321 and a slider 322, and a first motor (not shown) for driving the slider 322 to move on the linear guide 321, wherein the linear guide 321 is disposed on the second mounting frame 310, the slider 322 is slidably connected to the linear guide 321, and the grasping assembly 330 is connected to the slider 322. Specifically, in the exemplary embodiment, the lifting assembly 320 further includes a pair of guide rails 323 disposed on the second mounting frame 310 in a vertical direction, two linear guide rails 321 are symmetrically disposed on both sides of the pair of guide rails 323, and two sliding blocks 322 are slidably disposed on the two linear guide rails 321, respectively. The grabbing assembly 330 includes a longitudinal connecting plate 331 and two connecting blocks 332 disposed on two sides of the longitudinal connecting plate 331, the longitudinal connecting plate 331 is fixed on a moving end (not shown) of the guide rail pair 323 by screws, the two connecting blocks 332 are respectively fixedly connected with the two sliding blocks 322 by screws, and the first motor drives the sliding blocks 322 to move on the linear guide rail 321. By providing the linear guide 321, the slider 322, and the first motor, the lifting and moving function of the grabbing assembly 330 can be realized, and the grabbing assembly 330 is ensured to move in the vertical direction, so that the deviation can be reduced.

With continued reference to fig. 2, in some embodiments, the second mounting bracket 310 is provided with a receiving groove 311, where the receiving groove 311 corresponds to the bottom end of the linear guide 321. It is understood that the two receiving grooves 311 are respectively located right below the two linear guide rails 321. Grabbing component 330 frequently goes up and down on lifting component 320, needs to add lubricating oil to linear guide 321, sets up holding tank 311 in linear guide 321's below, can splendid attire lubricating oil that drips on linear guide 321, prevents that lubricating oil from dripping to reversing component 230, conveying component 220, even on the cylinder electricity core group, avoids causing the pollution.

With continued reference to fig. 2, in some embodiments, the second mounting frame 310 is provided with a slot sensor 312, the grabbing component 330 is provided with a sensing piece 333, when the lifting component 320 drives the grabbing component 330 to move up and down, the sensing piece 333 moves the grabbing component 330, and the sensing piece 333 can move to trigger the slot sensor 312. Specifically, four groove-shaped sensors 312 are provided on the longitudinal edge of the side of the second mounting frame 310 facing the welding mechanism 100 from top to bottom, sensing pieces 333 are mounted on the edge of the connection block 332 by screws, and when the lifting mechanism drives the gripping mechanism to move up and down, the sensing pieces 333 are driven to move up and down and pass through the groove-shaped mechanisms of the groove-shaped sensors 312 to generate an electric signal.

The first motor and the slot sensor 312 are electrically connected to a control system (not shown), and when the grabbing component 330 moves upwards to enable the sensing piece 333 to reach the uppermost slot sensor 312, the slot sensor 312 sends an electrical signal to the control system, and the control system sends a command for stopping movement to the first motor. In response, when the gripper 330 moves down and the sensor piece 333 reaches the lowermost groove sensor 312, the groove sensor 312 sends an electric signal to the control system, and the control system sends a command to stop the movement to the first motor. It will be appreciated that adjusting the height of the slot sensor 312 changes the height at which the gripper assembly 330 stops moving. Therefore, by providing the slot type sensor 312 and the sensing piece 333, the stroke of the up and down movement of the grabbing assembly 330 can be accurately and reliably controlled, preventing the grabbing assembly 330 from colliding downward with the cylindrical cell set or the reversing assembly 230.

Referring to fig. 1 and 3, in some embodiments, the buffer mechanism 300 further includes a sensing unit, where the sensing unit includes two correlation sensors 340, and the two correlation sensors 340 are disposed on the conveying assembly 220 and are respectively located at two sides of the reversing assembly 230, and the correlation sensors 340 are used to detect whether the reversing assembly 230 is loaded with the battery cell fixture. Specifically, an L-shaped board is fixedly installed on the left and right side edges of the first mounting frame 210, and two correlation sensors 340 are respectively disposed on the L-shaped board, it being understood that the two correlation sensors 340 respectively correspond to diagonal corners of the reversing assembly 230. The two correlation sensors 340 are electrically connected to the control system, and when the battery cell clamp is moved to the reversing assembly 230 by the transmission of the transmission chain 221, the clamp blocks the light between the two correlation sensors 340, and the correlation sensors 340 send an electrical signal to the control system indicating the existence of the battery cell clamp on the reversing assembly 230. Through setting up correlation sensor 340, can judge fast automatically whether the battery core anchor clamps remove to reversing assembly 230 on, and then snatch assembly 330 and snatch the action to the battery core anchor clamps, improved automatic welder's degree of automation and work efficiency.

Referring back to fig. 2, in some embodiments, the grasping assembly 330 includes a pneumatic finger cylinder 334. The grasping assembly 330 further includes a jaw 335 disposed on either side of the pneumatic finger cylinder 334, the jaw 335 on each side being connected to one of the slides 322 of the pneumatic finger cylinder 334. By providing pneumatic finger cylinders 334, the two side jaws 335 can be driven closer to each other to clamp the cell clamp, or further from each other to release the cell clamp.

Referring to fig. 3 and 4, in some embodiments, the reversing assembly 230 includes a first lift cylinder 232 and a transfer roller 233, the first mounting plate 231 is disposed on the first mounting frame 210, the transfer roller 233 is disposed between the two transfer chains 221, the transfer roller 233 is connected to a movable end of the first lift cylinder 232, and the first lift cylinder 232 is used to drive the transfer roller 233 to rise above the height of the first mounting frame 210 or to descend below the height of the transfer chains 221. In an exemplary embodiment, the first mounting plate 231 is mounted on the first mounting frame 210 and is horizontally disposed between the two conveyor chains 221 below the height of the conveyor chains 221. The first jacking cylinder 232 is vertically disposed and installed on the bottom surface of the first installation plate 231, and a piston rod of the first jacking cylinder 232 passes through the first installation plate 231 and then continues to extend upward, and is connected with the transfer roller 233. The first lifting cylinder 232 is electrically connected to the control system, so that the lifting height of the conveying roller 233 can be automatically controlled. When the conveying roller 233 is raised to a height higher than the conveying chain 221, the rolling surface of the conveying roller 233 contacts the battery cell clamp and lifts the battery cell clamp away from the surface of the conveying chain 221, so that the conveying roller 233 can transport the battery cell clamp along the length direction perpendicular to the conveying chain 221 by rolling, send the battery cell clamp into the welding mechanism 100, or transport the welded battery cell clamp in the welding mechanism 100 back again.

Referring to fig. 3, in some embodiments, the reversing assembly 230 further includes two first stoppers 222 and two lifting cylinders 223, the two first stoppers 222 are rotatably disposed on two sides of the transfer roller 223 in the rotation axis direction, respectively, the two second lifting cylinders 223 are connected to the first stoppers 222, respectively, and the two second lifting cylinders 223 are used for driving the first stoppers 222 to rotate to a height higher than or lower than the height of the transfer roller, respectively. Specifically, in the first transport direction, the transport rollers 233 are provided with second mounting plates 211 on both sides thereof, respectively, and the second mounting plates 211 are horizontally mounted on the first mounting frame 210 by screws. The second mounting plate 211 is provided with a groove-shaped mounting block 2110, and the first stopper 222 is rotatably provided on the groove-shaped mounting block 2110. The bottom surface of the second mounting plate 211 is also provided with a second jacking cylinder 223, and the movable end of the second jacking cylinder 223 extends upwards and is fixedly connected with one end of the first stop block 222 away from the conveying roller 233. When the cell fixture moves from the conveyor chain 221 to above the conveyor roller 233, the movable end of the second jacking cylinder 223 moves upwards to drive the first stop block 222 to rotate, so that the height of one end of the first stop block 222 far away from the conveyor roller 233 is higher than the height of the surface of the conveyor roller 233, and the two first stop blocks 222 play a limiting role on the cell fixture on the conveyor roller 233 to prevent the cell fixture from continuously moving on the conveyor chain 221.

Referring to fig. 3 and 5 together, in some embodiments, the transport mechanism 200 further includes a blocking assembly 240, the blocking assembly 240 including a blocking cylinder 241 and a second stopper 242, the blocking cylinder 241 being disposed on a side of the first mounting frame 210 remote from the welding mechanism 100, the second stopper 242 being disposed on a movable end of the blocking cylinder 241, the blocking cylinder 241 being configured to drive the second stopper 242 to protrude toward the transfer roller 233 to block the cell fixture from moving the transfer chain 221 from a direction remote from the welding mechanism 100. When the cell fixture returns from the welding mechanism 100 to the transfer roller 233, the second stopper 242 can perform a limiting function to prevent the cell fixture from falling off the edge of the first mounting frame 210 and causing damage. By providing the blocking cylinder 241, the distance between the second block 242 and the edge of the first mounting frame 210 near the welding mechanism 100 can be adjusted to adapt to the battery cell clamps with different sizes, so as to improve compatibility.

The present application also provides a die-bonding line, including the automatic bonding apparatus described above, and a reflow assembly 400 and a lifting handling assembly (not shown). Referring to fig. 1 and 3, in an exemplary embodiment, the reflow assembly 220 is similar in structure to the transfer assembly 220, and includes a conveyor, and the reflow assembly 400 corresponds to the transfer assembly 220 and is disposed below the transfer assembly 220. The cell welding line includes a plurality of automatic welding devices, the conveyor assemblies 220 of adjacent automatic welding devices are connected by other conveyor chain conveyors to form a line, and the adjacent reflow assemblies 400 are also connected by other conveyor chain conveyors to form a line. The lifting and carrying assembly is arranged between the conveying assembly 220 and the reflow assembly 400 at the tail end of the assembly line, and is used for carrying the battery core fixture on the conveying assembly 220 to the reflow assembly 400. Through setting up multiunit automatic welder, backward flow subassembly 400 and lift transport subassembly, can realize the welding and the backward flow of electric core fully automatically, avoid electric core anchor clamps to bump, greatly improve welding efficiency.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.

Claims (10)

1. An automatic welding device, characterized in that the automatic welding device comprises:

a welding mechanism;

the conveying mechanism comprises a first mounting frame, a conveying assembly and a reversing assembly, wherein the conveying assembly and the reversing assembly are both arranged on the first mounting frame, the conveying assembly is used for conveying the electric core clamps, and the reversing assembly is used for transferring the electric core clamps on the conveying assembly to the welding mechanism;

the buffer mechanism comprises a second mounting frame, a lifting component and a grabbing component, wherein the lifting component is arranged on the second mounting frame and used for driving the grabbing component to move up and down above the reversing component, so that the grabbing component can grab the battery cell clamp from the reversing component and can put the grabbed battery cell clamp back to the reversing component.

2. The automated welding apparatus of claim 1, wherein the lifting assembly comprises a linear guide, a slider, and a first motor, the linear guide is disposed on the second mounting frame, the slider is slidably coupled to the linear guide, the grasping assembly is coupled to the slider, and the first motor is configured to drive the slider to move on the linear guide.

3. The automatic welding device according to claim 2, wherein the second mounting frame is provided with a receiving groove, and the receiving groove corresponds to the bottom end of the linear guide rail.

4. The automatic welding device according to claim 1, wherein a groove sensor is arranged on the second mounting frame, an induction piece is arranged on the grabbing component, when the grabbing component is driven to move up and down by the lifting component, the induction piece moves along with the grabbing component, and the induction piece can move to trigger the groove sensor.

5. The automatic welding device according to claim 1, wherein the buffer mechanism further comprises an induction unit, the induction unit comprises two correlation sensors, the two correlation sensors are arranged on the conveying assembly and are respectively located on two sides of the reversing assembly, and the correlation sensors are used for detecting whether the reversing assembly is loaded with a battery cell clamp or not.

6. The automatic welding device of claim 1, wherein the conveyor assembly comprises two conveyor chains and a second motor, the conveyor chains are wound on the first mounting frame, and the second motor is used for driving the conveyor chains to rotate circularly.

7. The automated welding apparatus of claim 6, wherein the reversing assembly comprises a transfer roller and a first lift cylinder, the first lift cylinder is disposed on the first mounting frame, the transfer roller is disposed between the two transfer chains, the transfer roller is connected to a movable end of the first lift cylinder, and the first lift cylinder is configured to drive the transfer roller to rise above a height of the first mounting frame or to drop below a height of the transfer chains.

8. The automatic welding device according to claim 7, wherein the reversing assembly further comprises two first stoppers and two second lifting cylinders, the two first stoppers are rotatably disposed on two sides of the transfer roller in the rotation axis direction, the two second lifting cylinders are connected with the first stoppers, and the two second lifting cylinders are used for driving the first stoppers to rotate to a height higher than or lower than the height of the transfer roller.

9. The automated welding device of claim 7, wherein the transport mechanism further comprises a blocking assembly comprising a blocking cylinder disposed on a side of the first mount remote from the welding mechanism and a second stop disposed on a movable end of the blocking cylinder for driving the second stop to extend toward the transfer roller to block movement of the cell clamp out of the transfer chain in a direction away from the welding mechanism.

10. A die bonding line comprising the automated bonding apparatus of any one of claims 1-9, and a reflow assembly and a lift handling assembly.