Automatic ultrasonic welding device of battery assembly line

Abstract

The utility model provides an automatic ultrasonic welding device of a battery assembly line. The automatic ultrasonic welding device comprises a feeding conveying belt, a discharging conveying belt, a machine table, a rotating disc, a feeding mechanism, an ultrasonic welding mechanism, a discharging mechanism and a transfer seat, a plurality of material loading seats are arranged on the turntable; the feeding mechanism is used for carrying the batteries on the feeding conveying belt into the material carrying seat; the ultrasonic welding mechanism is used for conducting ultrasonic welding on the batteries in the material carrying base. And the discharging mechanism is used for carrying the batteries in the material carrying seat into the transfer seat and carrying the batteries in the transfer seat onto the discharging conveying belt. According to the utility model, the turntable, the feeding mechanism, the ultrasonic welding mechanism and the discharging mechanism are matched with the feeding conveying belt and the discharging conveying belt, so that automatic feeding, ultrasonic welding and discharging of batteries are realized, and the production efficiency is remarkably improved. In addition, through the arrangement of the transfer seat, the battery after ultrasonic welding is temporarily placed and cooled, and the stability of the battery packaging structure is improved.

Description

Technical Field

[0001] This utility model relates to an automatic ultrasonic welding device for a battery assembly line. Background Technology

[0002] Some rechargeable lithium batteries use a soft-pack lithium battery encapsulated in a shell. The shell includes an upper shell and a lower shell. During production, the soft-pack lithium battery is assembled in the shell by covering the upper shell and the lower shell. The gap between the upper shell and the lower shell is fixed by ultrasonic welding.

[0003] However, existing ultrasonic welding equipment requires manual feeding and manual unloading after the ultrasonic welding is completed, resulting in extremely low production efficiency. Utility Model Content

[0004] The purpose of this invention is to provide an automatic ultrasonic welding device for a battery assembly line, comprising a machine base, a turntable, a feeding mechanism, an ultrasonic welding mechanism, a discharging mechanism, a feeding conveyor belt, and a discharging conveyor belt. The turntable is rotatably mounted on the machine base. Multiple material carriers are provided on the turntable, spaced apart around the axis of the turntable. Each material carrier has a receiving slot for loading batteries. The machine base has a feeding station, a welding station, and a discharging station along the rotation direction of the turntable. The feeding conveyor belt and the discharging conveyor belt are located around the machine base. The feeding conveyor belt is used to transport the batteries to be ultrasonically welded; the discharging conveyor belt is used to transport the batteries to be ultrasonically welded. The completed battery; the feeding mechanism is located at the feeding station and is used to transport the battery on the feeding conveyor belt to the loading seat that reaches the feeding station; the ultrasonic welding mechanism is located at the welding station and is used to perform ultrasonic welding on the battery in the loading seat that reaches the welding station; a transfer seat is provided between the discharge station and the discharge conveyor belt, and the transfer seat is provided with a transfer groove for loading the ultrasonically welded battery; the discharge mechanism is located at the discharge station and is used to transport the battery in the loading seat that reaches the discharge station to the transfer seat, and to transport the battery in the transfer seat to the discharge conveyor belt.

[0005] This invention achieves automatic battery feeding, ultrasonic welding, and unloading by incorporating a turntable, feeding mechanism, ultrasonic welding mechanism, and unloading mechanism in conjunction with feeding and unloading conveyor belts, significantly improving production efficiency. Furthermore, by including a transfer station, this invention allows for temporary cooling of the ultrasonically welded batteries, enabling the joints to cool before being transferred to the unloading conveyor belt for output, thus enhancing the stability of the battery packaging structure. Attached Figure Description

[0006] Figure 1-3 These are schematic diagrams of the structure of this utility model from different angles.

[0007] Figure 4 This is a schematic diagram of the feeding mechanism of this utility model.

[0008] Figure 5 This is a schematic diagram of the material discharge mechanism of this utility model.

[0009] Figure 6 This is a schematic diagram of the material suction assembly of this utility model.

[0010] Figure 7 This is a schematic diagram of the ultrasonic welding mechanism of this utility model.

[0011] Figure 8 This is a schematic diagram of the battery structure of this utility model.

[0012] Figure 9-13 This is a schematic diagram illustrating the working principle of this utility model. Detailed Implementation

[0013] The following description, in conjunction with the accompanying drawings, further illustrates the proposed solution:

[0014] See appendix Figure 1-13 An automatic ultrasonic welding device for a battery assembly line includes a machine base 1, a turntable 2, a feeding mechanism 3, an ultrasonic welding mechanism 6, a discharging mechanism 5, a feeding conveyor belt 4, and a discharging conveyor belt 7.

[0015] The turntable 2 is rotatably mounted on the machine base 1; the turntable 2 is provided with a plurality of material carriers 21, and each material carrier 21 is distributed at intervals around the axis of the turntable 2; the material carrier 21 is provided with a receiving slot 211 for loading the battery 9.

[0016] The machine base 1 is provided with a feeding station 11, a welding station 12 and a discharging station 13 in sequence along the rotation direction of the turntable 2.

[0017] The feeding conveyor belt 4 and the discharging conveyor belt 7 are located around the machine base 1; the feeding conveyor belt 4 is used to transport the battery 9 to be ultrasonically welded, and the output end of the feeding conveyor belt 4 is close to the feeding station 11; the discharging conveyor belt 7 is used to transport the battery 9 after ultrasonic welding, and the input end of the discharging conveyor belt 7 is close to the discharging station 13.

[0018] The feeding mechanism 3 is located at the feeding station 11. The feeding mechanism 3 is used to transport the battery 9 on the feeding conveyor belt 4 to the material carrier 21 that reaches the feeding station 11.

[0019] The ultrasonic welding mechanism 6 is located at the welding station 12, and is used to perform ultrasonic welding on the battery 9 in the material carrier 21 that has reached the welding station 12.

[0020] A transfer station 8 is provided between the discharge station 13 and the discharge conveyor belt 7. The transfer station 8 is provided with a transfer trough 81 for loading the ultrasonically welded battery 9.

[0021] The discharge mechanism 5 is located at the discharge station 13. The discharge mechanism 5 is used to transport the battery 9 in the material carrier 21 that has reached the discharge station 13 to the transfer seat 8, and to transport the battery 9 in the transfer seat 8 to the discharge conveyor belt 7.

[0022] The automatic ultrasonic welding device of the battery assembly line has an X-axis, a Y-axis, and a Z-axis, which form a spatial rectangular coordinate system. The Z-axis is parallel to the axis of the turntable 2; the Y-axis is parallel to the tangent of the turntable 2; and the X-axis is perpendicular to the plane formed by the intersection of the Z-axis and the Y-axis. The feed conveyor belt 4 extends along the Y-axis.

[0023] The feeding mechanism 3 includes a clamp 31 and a feeding base 32. The feeding base 32 is fixed on the machine base 1. The clamp 31, having four degrees of freedom, is mounted on the feeding base 32, allowing it to move along the Y-axis, the X-axis, the Z-axis, and rotate about the Z-axis. This enables the feeding operation of transporting the batteries 9 from the feeding conveyor belt 4 to the loading seat 21 at the feeding station 11. The clamp 31 is used to grip the batteries 9 from the feeding conveyor belt 4 and release them when they reach the loading seat 21 at the feeding station 11.

[0024] Specifically, the clamp 31 and the feed base 32 are provided with a first Y-axis moving electric drive mechanism 33 for moving the clamp 31 relative to the feed base 32 along the Y-axis, a first X-axis moving electric drive mechanism 34 for moving the clamp 31 relative to the feed base 32 along the X-axis, a first Z-axis moving electric drive mechanism 35 for moving the clamp 31 relative to the feed base 32 along the Z-axis, and a first Z-axis rotating electric drive mechanism 36 for rotating the clamp 31 relative to the feed base 32 about the Z-axis. The clamp 31 is a pneumatic gripper.

[0025] The discharge mechanism 5 includes a suction assembly 51 and a discharge base 52. The discharge base 52 is fixed on the machine base 1, and the suction assembly 51 is mounted on the discharge base 52 in a way that allows movement along the Y-axis and along the Z-axis. The suction assembly 51 includes a bracket 511, a first suction nozzle 512, and a second suction nozzle 513. The first suction nozzle 512 and the second suction nozzle 513 are respectively mounted on the bracket 511 in a way that allows rotation around the Z-axis. The first suction nozzle 512 is used to suction the battery 9 in the material carrier 21 that has reached the discharge station 13 to the transfer seat 8 for release, and the second suction nozzle 513 is used to suction the battery 9 in the transfer seat 8 to the discharge conveyor belt 7 for release.

[0026] The material suction assembly 51 of this technical solution includes a first suction nozzle 512 and a second suction nozzle 513, which can simultaneously transport the battery 9 to the transfer seat 8 and the discharge conveyor belt 7, with high efficiency.

[0027] Specifically, a second Y-axis moving electric drive mechanism 53 for driving the suction assembly 51 to move relative to the discharge base 52 along the Y-axis and a second Z-axis moving electric drive mechanism 54 for driving the suction assembly 51 to move relative to the discharge base 52 along the Z-axis are provided between the suction assembly 51 and the discharge base 52. A second Z-axis rotating electric drive mechanism 514 for driving the first suction nozzle 512 to rotate around the Z-axis is provided between the first suction nozzle 512 and the bracket 511; a third Z-axis rotating electric drive mechanism 515 for driving the second suction nozzle 513 to rotate around the Z-axis is provided between the second suction nozzle 513 and the bracket 511.

[0028] The first suction nozzle 512 and the second suction nozzle 513 are respectively connected to an adsorption negative pressure generator (not shown in the figure). The adsorption negative pressure generator is configured to generate suction force for the first suction nozzle 512 and the second suction nozzle 513 to adsorb the battery 9.

[0029] The ultrasonic welding mechanism 6 includes an ultrasonic welding head 61 and a welding base 62; the welding base 62 is fixed on the machine base 1, and the ultrasonic welding head 61 is movably mounted on the welding base 62 along the Z-axis; a third Z-axis moving electric drive mechanism 63 for driving the ultrasonic welding head 61 to move along the Z-axis is provided between the ultrasonic welding head 61 and the welding base 62.

[0030] The first Y-axis moving electric drive mechanism 33, the first X-axis moving electric drive mechanism 34, the first Z-axis rotating electric drive mechanism 36, the second Y-axis moving electric drive mechanism 53, the second Z-axis moving electric drive mechanism 54, and the third Z-axis moving electric drive mechanism 63 can all use existing linear slide modules.

[0031] In this embodiment, the first Y-axis moving electric drive mechanism 33, the first X-axis moving electric drive mechanism 34, the first Z-axis rotating electric drive mechanism 36, and the second Y-axis moving electric drive mechanism 53 are lead screw slide modules. The second Z-axis moving electric drive mechanism 54 and the third Z-axis moving electric drive mechanism 63 are cylinder slide modules.

[0032] The first Z-axis rotation electric drive mechanism 36, the second Z-axis rotation electric drive mechanism 514, and the third Z-axis rotation electric drive mechanism 515 are rotary cylinders.

[0033] In this embodiment, there are six material carriers 21. When one material carrier 21 reaches the feeding station 11, one material carrier 21 reaches the welding station 12, and another material carrier 21 reaches the discharging station 13. There is a material carrier 21 between the two material carriers 21 located at the feeding station 11 and the welding station 12, a material carrier 21 between the two material carriers 21 located at the welding station 12 and the discharging station 13, and a material carrier 21 between the two material carriers 21 located at the discharging station 13 and the feeding station 11.

[0034] In this embodiment, the battery 9 is a rechargeable lithium battery, which includes a casing and a soft-pack lithium battery encapsulated within the casing. The casing is composed of an upper casing and a lower casing joined together, with a seam 91 at the joint. This technical solution is used to automatically perform ultrasonic welding on the seam of the battery casing, including automatic feeding and discharging operations. The specific workflow is as follows:

[0035] 1. The clamp 31 of the feeding mechanism 3 first moves along the Y-axis, X-axis, and Z-axis to make the clamp 31 face the output end of the feeding conveyor belt 4, and then grabs the battery 9 to be ultrasonically welded on the feeding conveyor belt 4, such as... Figure 9 As shown, move it above turntable 2 and rotate it around the Z-axis so that the deflection angle of battery 9 corresponds to that of the material carrier 21. Place the battery 9 to be ultrasonically welded into the material carrier 21 of the feeding station 11, as shown. Figure 10 As shown.

[0036] 2. The turntable 2 rotates, bringing the battery 9 to be ultrasonically welded to the welding station 12. The ultrasonic welding head 61 of the ultrasonic welding mechanism 6 moves down to perform ultrasonic welding on the joint 91 of the battery casing. Figure 1 As shown.

[0037] 3. The ultrasonic welding head 61 moves upward, and the turntable 2 rotates to bring the ultrasonically welded battery 9 to the discharge station 13. The suction mechanism of the discharge mechanism 5 moves along the X-axis and Z-axis, and the first suction nozzle 512 rotates around the Z-axis to correspond to the angle of the material carrier 21 of the discharge station 13, so as to adsorb and transport the battery 9 of the discharge station 13 to the transfer seat 8.

[0038] 4. Repeat the above operation. While the first suction nozzle 512 is adsorbing the battery 9 at the discharge station 13, the second suction nozzle 513 adsorbs the battery 9 on the transfer seat 8. Figure 11 As shown; when the first suction nozzle 512 moves the battery 9 from the discharge station 13 to the transfer seat 8, the second suction nozzle 513 moves the battery 9 from the original transfer seat 8 to the input end of the discharge conveyor belt 7, as shown. Figure 12-13 As shown.

[0039] This technical solution, through the coordination of a turntable 2, a feeding mechanism 3, an ultrasonic welding mechanism 6, a discharging mechanism 5, and feeding and discharging conveyors 4 and 7, achieves automatic feeding, ultrasonic welding, and discharging of the battery 9, significantly improving production efficiency. Furthermore, this technical solution incorporates a transfer seat 8 for temporarily placing and cooling the ultrasonically welded battery 9, allowing the joints to cool before transferring it to the discharging conveyor 7 for output, thus improving the stability of the battery 9's encapsulation structure.

[0040] The above preferred embodiments should be regarded as illustrative examples of the embodiments of the present application. Any technical deductions, substitutions, improvements, etc. that are similar to or based on the present application should be considered within the scope of protection of this patent.

Claims

1. An automatic ultrasonic welding device for a battery assembly line, characterized by: The device comprises a machine table, a rotating disc, a feeding mechanism, an ultrasonic welding mechanism, a discharging mechanism, a feeding conveyor belt and a discharging conveyor belt. The rotating disc is rotatably installed on the machine table, and a plurality of load carriers are arranged on the rotating disc and are spaced apart around the axis of the rotating disc. The load carriers are provided with receiving grooves for loading batteries. The machine table is provided with a feeding station, a welding station and a discharging station along the rotating direction of the rotating disc. The feeding conveyor belt and the discharging conveyor belt are located around the machine table. The feeding conveyor belt is used for conveying the batteries to be ultrasonically welded, and the discharging conveyor belt is used for conveying the batteries after ultrasonic welding. The feeding mechanism is located at the feeding station, and is used for carrying the batteries on the feeding conveyor belt into the load carriers reaching the feeding station. The ultrasonic welding mechanism is located at the welding station, and is used for ultrasonic welding of the batteries in the load carriers reaching the welding station. The discharging station and the discharging conveyor belt are provided with a transfer seat, and the transfer seat is provided with a transfer groove for loading the batteries after ultrasonic welding. The discharging mechanism is located at the discharging station, and is used for carrying the batteries in the load carriers reaching the discharging station into the transfer seat, and carrying the batteries in the transfer seat onto the discharging conveyor belt.

2. The automatic ultrasonic welding device of the battery assembly line according to claim 1, wherein: The automatic ultrasonic welding device of the battery assembly line has an X-axis, a Y-axis and a Z-axis, wherein the X-axis, the Y-axis and the Z-axis form a space rectangular coordinate system; the Z-axis is parallel to the axis of the rotating disc; the Y-axis is parallel to the tangent line of the rotating disc; and the X-axis is perpendicular to the plane formed by the Z-axis and the Y-axis. The feeding conveyor belt extends along the direction of the Y-axis. The feeding mechanism comprises a clamp and a feeding base. The feeding base is fixed on the machine table, and the clamp is movably installed on the feeding base along the Y-axis, movably installed on the feeding base along the X-axis, movably installed on the feeding base along the Z-axis, and rotatably installed on the feeding base around the Z-axis. The clamp is used for clamping the batteries on the feeding conveyor belt to be released into the load carriers reaching the feeding station.

3. The automatic ultrasonic welding device of the battery assembly line according to claim 2, wherein: The clamp and the feeding base are provided with a first Y-axis moving electric drive mechanism for driving the clamp to move along the Y-axis relative to the feeding base, a first X-axis moving electric drive mechanism for driving the clamp to move along the X-axis relative to the feeding base, a first Z-axis moving electric drive mechanism for driving the clamp to move along the Z-axis relative to the feeding base, and a first Z-axis rotating electric drive mechanism for driving the clamp to rotate around the Z-axis relative to the feeding base.

4. The automatic ultrasonic welding device of the battery assembly line according to claim 2, wherein: The clamp is a pneumatic clamping jaw.

5. The automatic ultrasonic welding device of the battery assembly line according to any one of claims 2-4, wherein: The discharging mechanism comprises a suction assembly and a discharging base. The discharging base is fixed on the machine table, and the suction assembly is movably installed on the discharging base along the Y-axis and along the Z-axis. The suction assembly comprises a support, a first suction nozzle and a second suction nozzle. The first suction nozzle and the second suction nozzle are rotatably installed on the support around the Z-axis. The first suction nozzle is used for sucking the battery in the carrier seat reaching the discharge station to release the battery in the transfer seat, and the second suction nozzle is used for sucking the battery in the transfer seat to release the battery on the discharge conveying belt.

6. The automatic ultrasonic welding device of the battery assembling line according to claim 5, characterized in that: A second Y-axis moving electric drive mechanism is arranged between the suction assembly and the discharge base for driving the suction assembly to move along the Y-axis relative to the discharge base, and a second Z-axis moving electric drive mechanism is arranged between the suction assembly and the discharge base for driving the suction assembly to move along the Z-axis relative to the discharge base; A second Z-axis rotating electric drive mechanism is arranged between the first suction nozzle and the support for driving the first suction nozzle to rotate around the Z-axis; A third Z-axis rotating electric drive mechanism is arranged between the second suction nozzle and the support for driving the second suction nozzle to rotate around the Z-axis.

7. The automatic ultrasonic welding device of the battery assembling line according to claim 5, characterized in that: The ultrasonic welding mechanism comprises an ultrasonic welding head and a welding base; The welding base is fixed on the machine table, and the ultrasonic welding head is movably installed on the welding base along the Z-axis; A third Z-axis moving electric drive mechanism is arranged between the ultrasonic welding head and the welding base for driving the ultrasonic welding head to move along the Z-axis.

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