A welding assembly for a lithium battery cap

Abstract

The present invention relates to the field of welding, and specifically discloses a welding assembly for a lithium battery cap, which includes a bearing plate. A rotating mechanism is arranged on the bearing plate, and a turntable is arranged on the rotating mechanism. A plurality of receiving grooves for placing lithium batteries are formed on the turntable; A sliding assembly is arranged on the bearing plate, and a plurality of jacking assemblies corresponding to the receiving grooves are arranged on the sliding assembly. The output end of the jacking assembly is located in the receiving groove. The present invention realizes the continuous welding of multiple groups of lithium batteries and caps, and at the same time can realize the pressing action on the lithium batteries and caps, reduce the phenomenon of cap detachment, and can realize the detection of the pressing degree of the lithium batteries and caps, and reject the un-pressed lithium batteries and caps, so as to ensure the yield rate of lithium batteries, improve the market competitiveness, and avoid the damage of the welding mechanism to the lithium batteries, improve the protection effect on the lithium batteries, and improve the production efficiency of lithium batteries.

Description

Technical Field

[0001] The present invention relates to the field of welding technology, and in particular to a welding assembly for a lithium battery cap. Background Art

[0002] The lithium battery cap is an important part of the lithium battery, located at the top of the battery and undertaking multiple key functions. The lithium battery cap includes a top cover, a rubber ring, an explosion-proof diaphragm, an aluminum sheet, a hole plate, etc., and has the functions of transmitting current and protecting the seal; during the manufacturing process, the lithium battery cap generally needs to be connected to the battery case by laser welding, because laser welding can provide a high-strength connection and ensure good sealing performance, ensuring the reliability of electrical connection and completely closing the top of the battery.

[0003] In the existing patent CN113618239A, a laser welding device for a lithium battery cap is disclosed, which includes a conveying mechanism, a laser welding mechanism, and an intermittent synchronization mechanism. The conveying mechanism is used for conveying the lithium battery, the laser welding mechanism is used for welding the cap installed at the end of the lithium battery, and the intermittent synchronization mechanism is used for intermittently controlling the synchronous movement of the laser welding mechanism and the conveying mechanism. In this application, by setting the conveying mechanism, the laser welding mechanism, and the gap synchronization mechanism, the conveying mechanism is used for conveying the lithium battery with the cap installed, the laser welding mechanism is used for welding the cap installed on the lithium battery, and the gap synchronization mechanism is used for intermittently controlling the synchronous movement of the laser welding mechanism and the conveying mechanism, so that the welding of the cap can be realized during the process of the conveying mechanism conveying the lithium battery with the cap installed, thereby improving the welding efficiency of the laser welding device for the lithium battery cap to the cap.

[0004] In the above structure, the welding of the lithium battery cap can be realized. However, since the cap is installed on the lithium battery, when the welding is not completed, the cap is likely to fall off the lithium battery during the conveying process, and the situation of the cap falling off is not detected, resulting in the inability to realize the welding between the fallen cap and the lithium battery, making the welding device unable to continuously weld the cap, and even causing damage to the lithium battery by the welding device, reducing the protection effect on the lithium battery, being not conducive to improving the yield rate of the lithium battery, and reducing the production efficiency of the lithium battery.

[0005] Therefore, how to provide a welding assembly for a lithium battery cap is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0006] An object of the present invention is to provide a welding assembly for a lithium battery cap. The welding assembly for a lithium battery cap according to the present invention includes a bearing plate, a rotating mechanism is arranged on the bearing plate, a turntable is arranged on the rotating mechanism, and a plurality of accommodation grooves for placing lithium batteries are formed on the turntable;

[0007] A sliding component is arranged on the bearing plate, and a plurality of jacking components corresponding to the accommodating grooves are arranged on the sliding component, and the output end of the jacking component is located in the accommodating groove;

[0008] A pressing component for pressing the cap on the lithium battery is arranged on the bearing plate, a pushing component is arranged on the pressing component, a detecting component for detecting the pressing degree of the cap is connected to the pushing component, and an adjusting component connected to the detecting component is arranged on the pushing component;

[0009] Wherein, when the detecting component detects that the cap is not tightly pressed, the pushing component forces the adjusting component to be connected with the sliding component, and when the pressing component retracts, the pushing component drives the jacking component to jack up the lithium battery and the cap upward through the detecting component and the adjusting component;

[0010] A welding mechanism for welding the lithium battery and the cap is arranged on the bearing plate, and a pushing component for pushing the lithium battery and the cap jacked up by the jacking component is arranged on the bearing plate.

[0011] Preferably, the rotating mechanism includes a motor installed on the bearing plate, a rotating rod connected to the turntable is connected to the bearing plate, a driving gear is fixedly sleeved on the output shaft of the motor, and a driven gear meshing with the driving gear is fixedly sleeved on the rotating rod.

[0012] Preferably, the jacking component includes a top plate arranged in the accommodating groove, the top plate is adapted to the accommodating groove, a top rod penetrating through the accommodating groove is arranged on the top plate, an installation block is arranged on the top rod, and a first spring sleeved on the outer circle of the top rod is arranged between the installation block and the turntable.

[0013] Preferably, the sliding component includes a support rod arranged on the bearing plate, a circular guide rail is arranged on the support rod, a blanking convex rail is arranged on the circular guide rail, a roller adapted to the circular guide rail is installed on the installation block, a connecting rod is arranged on the installation block, and a jacking rack is arranged on the connecting rod.

[0014] Preferably, the pressing component includes a first fixing plate arranged on the bearing plate, a hydraulic push rod is installed on the first fixing plate, and a pressing die adapted to the cap and the lithium battery is arranged at the output end of the hydraulic push rod.

[0015] Preferably, the pushing assembly includes a cross bar disposed at the output end of the hydraulic push rod. The cross bar penetrates through the first fixing plate. A pushing cylinder is arranged on the first fixing plate. A pushing piston is arranged in the pushing cylinder. A pushing rod penetrating through the pushing cylinder is connected to the pushing piston. The cross bar is connected to the pushing rod. An air duct is arranged on the pushing cylinder.

[0016] Preferably, the detecting assembly includes a second fixing plate disposed on the bearing plate. A detecting cylinder communicated with the air duct is arranged on the second fixing plate. An extrusion piston is arranged in the detecting cylinder. A movable rod penetrating through the detecting cylinder is arranged on the extrusion piston. A detecting rod penetrating through the movable rod is arranged at the end of the movable rod. A pressure sensing sheet is arranged at the end of the detecting rod. A detecting block for detecting the cap is arranged on the pressure sensing sheet. A second spring sleeved on the outer circle of the detecting rod is arranged between the pressure sensing sheet and the movable rod. A first solenoid valve is installed on the air duct. A vertical rod is arranged on the movable rod. A horizontal straight rack is arranged on the vertical rod.

[0017] Preferably, the adjusting assembly includes an adjusting cylinder disposed on the second fixing plate. An adjusting piston is arranged in the adjusting cylinder. An adjusting rod penetrating through the adjusting cylinder is arranged on the adjusting piston. A supporting block is arranged on the adjusting rod. An adjusting gear meshing with the horizontal straight rack is connected to the supporting block through a bearing. A branch pipe communicated with the air duct is arranged on the adjusting cylinder. A second solenoid valve is installed on the branch pipe.

[0018] Preferably, the welding mechanism includes a third fixing plate disposed on the bearing plate. A robotic arm is arranged on the third fixing plate. An annular laser welding head is installed on the robotic arm.

[0019] Preferably, the material pushing assembly includes a load-bearing rod disposed on the third fixing plate. A suspension plate is arranged on the load-bearing rod. Two groups of electric push rods are arranged on the suspension plate. A material pushing plate in an arc shape is arranged at the output end of the electric push rod.

[0020] The beneficial effects of the present invention are as follows:

[0021] Before welding the lithium battery and the cap, the lithium battery is transported into the receiving groove by the conveying device. At the same time, the rotating mechanism is used to force the turntable to rotate one process, and the sliding assembly drives the jacking assembly to move one process, so that the lithium battery is located below the cap. The conveying device is used to attach the cap to the top of the lithium battery. Then the rotating mechanism is started again, so that the lithium battery and the cap are both located at the pressing assembly. The pressing assembly is started to press the cap, so that the cap is pressed tightly on the lithium battery. When the pressing assembly presses down, it drives the pushing assembly to move, so that the detection assembly moves towards the cap to detect the pressing degree of the cap. When it is detected that the cap is pressed tightly, the detection assembly passes smoothly. At this time, the adjusting assembly does not act. When retracting, the pressing of the previous group of caps is completed. The pressing assembly moves up, and the detection assembly is restored to its original position through the pushing assembly. The rotating mechanism is started again, and the turntable rotates one process, so that the lithium battery and the cap move below the welding mechanism. The lithium battery and the cap are welded by the welding mechanism. When it is detected that the cap is not pressed tightly, the detection assembly will be blocked by the cap above the lithium battery, disconnecting the detection assembly from the pushing assembly and keeping the detection assembly stationary, so that the pushing assembly is connected to the adjusting assembly. The pressing assembly continues to press down to a reasonable position to complete the pressing of the previous group of caps. At this time, the pushing assembly drives the adjusting assembly to move, forcing the adjusting assembly to be connected to the sliding assembly and the detection assembly. When retracting, the pushing assembly is disconnected from the adjusting assembly to ensure that the adjusting assembly does not move. At the same time, the pushing assembly is connected to the detection assembly. When the pressing assembly moves up, the pushing assembly drives the detection assembly to move. Through the action of the adjusting assembly, the sliding assembly moves up until the jacking assembly jacks up the non-pressed cap and lithium battery. The lithium battery and the cap are pushed out of the turntable by the pushing assembly until the detection assembly returns to its original position, forcing the pushing assembly to be connected to the adjusting assembly. The pressing assembly continues to move up to its original position, causing the adjusting assembly to return to its original position. At this time, under the action of gravity, the sliding assembly and the jacking assembly move down to their original positions, and the welding mechanism does not work in the next process. In summary, a welding assembly for a lithium battery cap of the present application realizes continuous welding of multiple groups of lithium batteries and caps, can simultaneously realize the pressing action on the lithium battery and the cap, improves the stability of the lithium battery and the cap, reduces the phenomenon of cap shedding, can detect the pressing degree of the lithium battery and the cap, and eliminates the non-pressed lithium batteries and caps, thereby ensuring the qualified rate of lithium batteries, improving market competitiveness, avoiding damage to the lithium battery by the welding mechanism, improving the protection of the lithium battery, and improving the production efficiency of the lithium battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0023] Figure 1 is a three-dimensional structure solid diagram of the present invention;

[0024] Figure 2 Partial structural entity diagram of the present invention;

[0025] Figure 3 Structural entity diagram of the rotating mechanism of the present invention;

[0026] Figure 4 Position relationship diagram of the pushing component, detection component and adjustment component of the present invention;

[0027] Figure 5 Structural entity diagram of the jacking component of the present invention;

[0028] Figure 6 Structural entity diagram of the pushing component of the present invention;

[0029] Figure 7 Structural entity diagram of the detection component of the present invention;

[0030] Figure 8 Structural entity diagram of the sliding component of the present invention;

[0031] Figure 9 Structural entity diagram of the material pushing component of the present invention;

[0032] Figure 10 Structural entity diagram of the welding mechanism of the present invention.

[0033] In the figure: 1. Bearing plate; 2. Rotating mechanism; 201. Motor; 202. Rotating rod; 203. Driving gear; 204. Driven gear; 3. Turntable; 4. Accommodating groove; 5. Sliding component; 501. Support rod; 502. Circular guide rail; 503. Feeding convex rail; 504. Roller; 505. Connecting rod; 506. Jacking rack; 6. Jacking component; 601. Top plate; 602. Jacking rod; 603. Mounting block; 604. First spring; 7. Pressing-down component; 701. First fixing plate; 702. Hydraulic push rod; 703. Pressing-down die; 8. Pushing component; 801. Cross bar;

[0034] 802. Pushing cylinder; 803. Pushing piston; 804. Pushing rod; 805. Air duct; 9. Detection component;

[0035] 901. Second fixing plate; 902. Detection cylinder; 903. Extrusion piston; 904. Movable rod; 905. Detection rod; 906. Pressure sensing sheet; 907. Detection block; 908. Second spring; 909. First solenoid valve; 9010. Vertical rod; 9011. Horizontal straight rack; 10. Adjusting assembly; 1001. Adjusting cylinder; 1002. Adjusting piston; 1003. Adjusting rod; 1004. Support block; 1005. Adjusting gear; 1006. Branch pipe; 1007. Second solenoid valve; 11. Welding mechanism; 1101. Third fixing plate; 1102. Robot arm; 1103. Annular laser welding head; 12. Pushing component; 1201. Load-bearing rod; 1202. Suspension plate; 1203. Electric push rod; 1204. Pushing plate. Detailed implementation mode

[0036] Now, the present invention will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner, so they only show the components related to the present invention.

[0037] Embodiment 1:

[0038] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 shown, a welding assembly for a lithium battery cap of the present invention includes a bearing plate 1, a rotating mechanism 2 is arranged on the bearing plate 1, a turntable 3 is arranged on the rotating mechanism 2, and a plurality of receiving grooves 4 for placing lithium batteries are formed on the turntable 3;

[0039] A sliding assembly 5 is arranged on the bearing plate 1, and a plurality of jacking assemblies 6 corresponding to the receiving grooves 4 are arranged on the sliding assembly 5, and the output ends of the jacking assemblies 6 are located in the receiving grooves 4;

[0040] A pressing assembly 7 for pressing the cap on the lithium battery is arranged on the bearing plate 1, a pushing assembly 8 is arranged on the pressing assembly 7, a detecting assembly 9 for detecting the pressing degree of the cap is connected to the pushing assembly 8, and an adjusting assembly 10 connected to the detecting assembly 9 is arranged on the pushing assembly 8;

[0041] Among them, when the detecting assembly 9 detects that the cap is not tightly pressed, the pushing assembly 8 forces the adjusting assembly 10 to be connected to the sliding assembly 5. When the pressing assembly 7 retracts, the pushing assembly 8 drives the jacking assembly 6 to jack up the lithium battery and the cap upward through the detecting assembly 9 and the adjusting assembly 10;

[0042] The bearing plate 1 is provided with a welding mechanism 11 for welding the lithium battery and the cap, and the bearing plate 1 is provided with a pushing component 12 for the lithium battery and the cap to be pushed up by the pushing and jacking component 6.

[0043] Working principle: Before welding the lithium battery and the cap, the lithium battery is conveyed into the receiving groove 4 by the conveying device. At the same time, the rotating mechanism 2 forces the turntable 3 to rotate one process, and the sliding assembly 5 drives the jacking assembly 6 to move one process, so that the lithium battery is located below the cap. The cap is attached to the top of the lithium battery by the conveying device. Then, the rotating mechanism 2 is started again, so that the lithium battery and the cap are both located at the pressing assembly 7. The pressing assembly 7 is started to force the pressing assembly 7 to press the cap, so that the cap is pressed on the lithium battery. When the pressing assembly 7 presses down, it drives the pushing assembly 8 to move, so that the pushing assembly 8 drives the detection assembly 9 to move, and the detection assembly 9 moves towards the cap to detect the pressing degree of the cap. When it is detected that the cap is pressed tightly, the detection assembly 9 passes smoothly. At this time, the adjusting assembly 10 does not act. When retracting, the pressing of the previous group of caps is completed. The pressing assembly 7 moves up. Through the action of the pushing assembly 8, the detection assembly 9 returns to its original position. The rotating mechanism 2 is started again, and the turntable 3 rotates one process, so that the lithium battery and the cap move below the welding mechanism 11, and the welding mechanism 11 is used to weld the lithium battery and the cap. When it is detected that the cap is not pressed tightly, the detection assembly 9 will be blocked by the cap above the lithium battery, disconnect the detection assembly 9 from the pushing assembly 8, and keep the detection assembly 9 stationary, so that the pushing assembly 8 is connected to the adjusting assembly 10. The pressing assembly 7 continues to press down to a reasonable position to complete the pressing of the previous group of caps. At this time, the pushing assembly 8 drives the adjusting assembly 10 to move, forcing the adjusting assembly 10 to be connected to the sliding assembly 5 and the detection assembly 9. When retracting, the connection between the pushing assembly 8 and the adjusting assembly 10 is disconnected to ensure that the adjusting assembly 10 does not move. At the same time, the pushing assembly 8 is connected to the detection assembly 9. When the pressing assembly 7 moves up, the pushing assembly 8 drives the detection assembly 9 to move. Through the action of the adjusting assembly 10, the sliding assembly 5 moves up until the jacking assembly 6 jacks up the non-pressed cap and the lithium battery. The pushing component 12 is used to push the lithium battery and the cap out of the turntable 3 until the detection component 9 returns to its original position, forcing the pushing component 8 to be connected to the adjusting component 10. The pressing component 7 continues to move up to its original position, so that the adjusting component 10 returns to its original position. At this time, under the action of gravity, the sliding assembly 5 and the jacking assembly 6 move down to their original positions, and the welding mechanism 11 does not work in the next process. In summary, a welding assembly for a lithium battery cap of the present application realizes continuous welding of multiple groups of lithium batteries and caps, can simultaneously perform the pressing action on the lithium battery and the cap, improves the stability of the lithium battery and the cap, reduces the phenomenon of cap detachment, can detect the pressing degree of the lithium battery and the cap, and eliminates the non-pressed lithium battery and cap, thereby ensuring the yield rate of the lithium battery, improving the market competitiveness, avoiding damage to the lithium battery by the welding mechanism 11, improving the protection effect on the lithium battery, and improving the production efficiency of the lithium battery.

[0044] Embodiment 2:

[0045] Such as Figure 2and Figure 3 As shown in Figure 3 , for a welding assembly of a lithium battery cap according to the present invention, the rotating mechanism 2 includes a motor 201 installed on the bearing plate 1. A rotating rod 202 connected to the turntable 3 is connected to the bearing plate 1 in a bearing manner. A driving gear 203 is fixedly sleeved on the output shaft of the motor 201, and a driven gear 204 meshing with the driving gear 203 is fixedly sleeved on the rotating rod 202.

[0046] As Figure 2 、 Figure 4 and Figure 5 As shown in Figure 4 and Figure 5 , for a welding assembly of a lithium battery cap according to the present invention, the jacking assembly 6 includes a top plate 601 disposed in the receiving groove 4. The top plate 601 is adapted to the receiving groove 4. A top rod 602 penetrating the receiving groove 4 is provided on the top plate 601. An installation block 603 is provided on the top rod 602. A first spring 604 sleeved on the outer circle of the top rod 602 is provided between the installation block 603 and the turntable 3.

[0047] As Figure 2 、 Figure 4 、 Figure 5 and Figure 8 As shown in Figure 2 , Figure 4 , Figure 5 and Figure 8 , for a welding assembly of a lithium battery cap according to the present invention, the sliding assembly 5 includes a support rod 501 disposed on the bearing plate 1. A circular guide rail 502 is provided on the support rod 501. A blanking convex rail 503 is provided on the circular guide rail 502. A roller 504 adapted to the circular guide rail 502 is installed on the installation block 603. A connecting rod 505 is provided on the installation block 603. A jacking rack 506 is provided on the connecting rod 505.

[0048] As Figure 1 、 Figure 2 、 Figure 4 and Figure 6 As shown in Figure 1 , Figure 2 , Figure 4 and Figure 6 , for a welding assembly of a lithium battery cap according to the present invention, the pressing-down assembly 7 includes a first fixing plate 701 disposed on the bearing plate 1. A hydraulic push rod 702 is installed on the first fixing plate 701. A pressing-down die 703 adapted to the cap and the lithium battery is provided at the output end of the hydraulic push rod 702.

[0049] As Figure 2 、 Figure 4 and Figure 6 As shown in Figure 2 , Figure 4 and Figure 6 , for a welding assembly of a lithium battery cap according to the present invention, the pushing assembly 8 includes a cross bar 801 provided at the output end of the hydraulic push rod 702. The cross bar 801 penetrates the first fixing plate 701. A pushing cylinder 802 is provided on the first fixing plate 701. A pushing piston 803 is disposed in the pushing cylinder 802. A pushing rod 804 penetrating the pushing cylinder 802 is connected to the pushing piston 803. The cross bar 801 is connected to the pushing rod 804. An air guide pipe 805 is provided on the pushing cylinder 802.

[0050] As Figure 1, Figure 2 , Figure 4 and Figure 7 As shown in Figure 2 , Figure 4 and Figure 7 , for a welding assembly of a lithium battery cap of the present invention, the detection assembly 9 includes a second fixing plate 901 arranged on the bearing plate 1. A detection cylinder 902 communicated with the air guide pipe 805 is arranged on the second fixing plate 901. An extrusion piston 903 is arranged in the detection cylinder 902. A movable rod 904 penetrating through the detection cylinder 902 is arranged on the extrusion piston 903. A detection rod 905 penetrating through the movable rod 904 is arranged at the end of the movable rod 904. A pressure sensing sheet 906 is arranged at the end of the detection rod 905. The pressure sensing sheet 906 is connected to the control system. A detection block 907 for detecting the cap is arranged on the pressure sensing sheet 906. A second spring 908 sleeved on the outer circle of the detection rod 905 is arranged between the pressure sensing sheet 906 and the movable rod 904. An electromagnetic valve I 909 is installed on the air guide pipe 805. The electromagnetic valve I 909 is connected to the control system. A vertical rod 9010 is arranged on the movable rod 904. A horizontal straight rack 9011 is arranged on the vertical rod 9010.

[0051] As Figure 1 , Figure 2 , Figure 4 and Figure 7 As shown in ,

[0051] , Figure 1 , Figure 2 , Figure 4 and Figure 7 , for a welding assembly of a lithium battery cap of the present invention, the adjusting assembly 10 includes an adjusting cylinder 1001 arranged on the second fixing plate 901. An adjusting piston 1002 is arranged in the adjusting cylinder 1001. An adjusting rod 1003 penetrating through the adjusting cylinder 1001 is arranged on the adjusting piston 1002. A support block 1004 is arranged on the adjusting rod 1003. An adjusting gear 1005 meshed with the horizontal straight rack 9011 is connected to the support block 1004 through a bearing. A branch pipe 1006 communicated with the air guide pipe 805 is arranged on the adjusting cylinder 1001. An electromagnetic valve II 1007 is installed on the branch pipe 1006. The electromagnetic valve II 1007 is connected to the control system.

[0052] As Figure 1 and Figure 10 As shown in Figure 1 and Figure 10 , for a welding assembly of a lithium battery cap of the present invention, the welding mechanism 11 includes a third fixing plate 1101 arranged on the bearing plate 1. A robotic arm 1102 is arranged on the third fixing plate 1101. An annular laser welding head 1103 is installed on the robotic arm 1102.

[0053] As Figure 1 and Figure 9 As shown in Figure 1 and Figure 9 , for a welding assembly of a lithium battery cap of the present invention, the feeding assembly 12 includes a load-bearing rod 1201 arranged on the third fixing plate 1101. A suspension plate 1202 is arranged on the load-bearing rod 1201. Two groups of electric push rods 1203 are arranged on the suspension plate 1202. A feeding plate 1204 in an arc shape is arranged at the output end of the electric push rod 1203.

[0054] Working principle: Before welding the lithium battery and the cap, the lithium battery is conveyed into the receiving groove 4 by the conveying device. At the same time, the motor 201 is started. The output shaft of the motor 201 rotates to drive the driving gear 203 to rotate, which drives the driven gear 204 to rotate, forcing the rotating rod 202 to rotate. The rotating rod 202 drives the turntable 3 to rotate one process. At the same time, the roller 504 moves on the circular guide rail 502. The roller 504 drives the mounting block 603, the ejector rod 602 and the top plate 601 to move one process, so that the lithium battery is located below the cap. The cap is attached to the top of the lithium battery by using the conveying device. Then the motor 201 is started again, and the turntable 3 rotates one process, so that the lithium battery and the cap are both located below the lower pressing die 703;

[0055] During pressing, the hydraulic push rod 702 is started. The output end of the hydraulic push rod 702 drives the lower pressing die 703 to move downward, and the lower pressing die 703 presses the cap on the lithium battery;

[0056] During the pressing process, the pressing degree of the next group of lithium batteries and caps is detected, and defective products are removed in time. When the cap is in the pressed state, at this time, the cap is inside the receiving groove 4, and the top of the cap is flush with the notch of the receiving groove 4. The second solenoid valve 1007 is closed, and the first solenoid valve 909 is opened. The air duct 805 makes the pushing cylinder 802 communicate with the detecting cylinder 902. When the hydraulic push rod 702 presses down, the output end of the hydraulic push rod 702 drives the cross bar 801 to move downward, the cross bar 801 drives the push rod 804 to move downward, and the push rod 804 drives the push piston 803 to move, so that the gas in the pushing cylinder 802 enters the detecting cylinder 902, increasing the gas in the detecting cylinder 902, making the extrusion piston 903 move, the extrusion piston 903 drives the movable rod 904 to move, so that the movable rod 904 drives the detecting rod 905, the pressure sensing piece 906, the second spring 908, the detecting block 907, the vertical rod 9010 and the horizontal straight rack 9011 to move synchronously until the detecting block 907 is located above the receiving groove 4. Since the cap is in the pressed state, the detecting block 907 can pass smoothly. At this time, the lower pressing die 703 completes the pressing action on the previous group of caps;

[0057] Since the cap is in the pressed state, when the hydraulic push rod 702 retracts, the output end of the hydraulic push rod 702 moves upward to drive the cross bar 801 to move upward, the cross bar 801 drives the push rod 804 to move upward, and the push rod 804 drives the push piston 803 to move upward, so that the gas in the detecting cylinder 902 enters the pushing cylinder 802, reducing the gas in the detecting cylinder 902, making the extrusion piston 903 move in the reverse direction, the extrusion piston 903 drives the movable rod 904 to move in the reverse direction, so that the movable rod 904 drives the detecting rod 905, the pressure sensing piece 906, the second spring 908, the detecting block 907, the vertical rod 9010 and the horizontal straight rack 9011 to return to the original position;

[0058] When the cap is in an uncompressed state, the top of the cap is inside the receiving groove 4 at this time, but the top of the cap is higher than the notch of the receiving groove 4. The second electromagnetic valve 1007 is closed, and the first electromagnetic valve 909 is opened. The air duct 805 makes the pushing cylinder 802 communicate with the detection cylinder 902. When the hydraulic push rod 702 presses down, the output end of the hydraulic push rod 702 drives the cross bar 801 to move downward. The cross bar 801 drives the push rod 804 to move downward, and the push rod 804 drives the push piston 803 to move, so that the gas in the pushing cylinder 802 enters the detection cylinder 902, increasing the gas in the detection cylinder 902, causing the extrusion piston 903 to move. The extrusion piston 903 drives the movable rod 904 to move, so that the movable rod 904 drives the detection rod 905, the pressure sensing piece 906, the second spring 908, the detection block 907, the vertical rod 9010 and the horizontal straight rack 9011 to move synchronously until the detection block 907 moves to the position of the cap. Since the cap is in an uncompressed state, the detection block 907 contacts the top of the cap, and the cap abuts against the inner wall of the receiving groove 4. Therefore, the cap will exert a force on the detection block 907;

[0059] The detection block 907 will move in the reverse direction. Under the action of the movable rod 904 and the detection block 907, the second spring 908 is compressed. When the pressure sensing piece 906 just senses the pressure and transmits the signal to the control system, the control system controls the first electromagnetic valve 909 to close and the second electromagnetic valve 1007 to open. Under the action of the air duct 805 and the branch pipe 1006, the pushing cylinder 802 communicates with the adjusting cylinder 1001. Since the previous group of caps has not been compressed tightly, the hydraulic push rod 702 continues to press down until the lower pressing die 703 presses the previous group of caps tightly on the lithium battery. At this time, the gas in the pushing cylinder 802 enters the adjusting cylinder 1001, increasing the gas in the adjusting cylinder 1001, causing the adjusting piston 1002 to move and drive the adjusting rod 1003 to move. The adjusting rod 1003 drives the supporting block 1004 to move, and the supporting block 1004 drives the adjusting gear 1005 to move, so that the adjusting gear 1005 meshes with both the pushing rack 506 and the horizontal straight rack 9011;

[0060] Since the cap is in an uncompressed state, when the hydraulic push rod 702 retracts, the first solenoid valve 909 opens and the second solenoid valve 1007 closes, causing the push cylinder 802 and the detection cylinder 902 to communicate again. The output end of the hydraulic push rod 702 moves upward, driving the cross bar 801 upward. The cross bar 801 drives the push rod 804 upward, and the push rod 804 drives the push piston 803 to move upward, causing the gas in the detection cylinder 902 to enter the push cylinder 802, reducing the gas in the detection cylinder 902, causing the extrusion piston 903 to move in the reverse direction. The extrusion piston 903 drives the movable rod 904 to move in the reverse direction, causing the movable rod 904 to drive the detection rod 905, the pressure sensing piece 906, the second spring 908, the detection block 907, the vertical rod 9010, and the horizontal straight rack 9011 to retract. At this time, the retraction of the horizontal straight rack 9011 drives the adjustment gear 1005 to rotate clockwise. The adjustment gear 1005 drives the top push rack 506 upward, and the top push rack 506 drives the connecting rod 505 upward. The connecting rod 505 drives the mounting block 603, the top rod 602, and the top plate 601 upward. The roller 504 disengages from the circular guide rail 502, and the first spring 604 is compressed until the top plate 601 forces the lithium battery and the cap to be completely ejected from the accommodation groove 4 until the movable rod 904, the detection rod 905, the pressure sensing piece 906, the second spring 908, the detection block 907, the vertical rod 9010, and the horizontal straight rack 9011 retract to their original positions;

[0061] Start the electric push rod 1203. The output end of the electric push rod 1203 drives the push plate 1204 to move until the push plate 1204 pushes out the welded lithium battery and the cap from the turntable 3, and pushes out the uncompressed lithium battery and the cap for centralized collection;

[0062] At this time, since the gas in the adjustment cylinder 1001 has not returned to its original state, that is, the gas in the adjustment cylinder 1001 has increased, the hydraulic push rod 702 has not returned to its original position. The first solenoid valve 909 closes and the second solenoid valve 1007 opens, causing the adjustment cylinder 1001 to communicate with the push cylinder 802, causing the hydraulic push rod 702 to continue to retract, forcing the gas in the adjustment cylinder 1001 to decrease, causing the adjustment piston 1002 to drive the adjustment rod 1003 to retract until the support block 1004 drives the adjustment gear 1005 to disengage from the top push gear until the adjustment gear 1005 returns to its original position, and at the same time the hydraulic push rod 702 returns to its original position. After the adjustment gear 1005 disengages from the top push gear, due to the action of gravity and the first spring 604, the first spring 604, the top plate 601, and the top rod 602 return to their original positions, causing the roller 504 to fall on the circular slide rail;

[0063] Continue to start the motor 201. The turntable 3 rotates one process, and the lithium battery and the cap are welded using the robotic arm 1102 and the ring laser welding head 1103 to complete the welding operation;

[0064] During blanking, the turntable 3 rotates, and the turntable 3 drives the welded lithium battery and the cap to move to the blanking convex rail 503. Since the height of the blanking convex rail 503 is higher than that of the circular guide rail 502, the roller 504 moves upward. The roller 504 drives the mounting block 603, the ejector rod 602, and the top plate 601 to move upward, and the first spring 604 is compressed. Thus, the top plate 601 ejects the welded lithium battery and the cap. The electric push rod 1203 is started, and the electric push rod 1203 drives the pushing plate 1204 to move until the pushing plate 1204 pushes out the welded lithium battery and the cap from the turntable 3, and the welded lithium battery and the cap are collected centrally.

[0065] The setting of the rotating mechanism 2 can provide a rotating force, causing the turntable 3 to rotate and move in a process. The rotation angle of one process is the angle between adjacent receiving grooves 4, completing operations such as pressing, detecting, welding, and blanking of lithium batteries and caps; the setting of the jacking assembly 6 can achieve the jacking function of the lithium battery and the cap, ejecting the uncompressed cap after detection in a timely manner to handle defective products and improve the product yield. At the same time, it can eject the welded lithium battery and cap, facilitating the centralized collection of the welded products; the setting of the sliding assembly 5 achieves the purpose of automatic blanking. When the welded lithium battery and cap are blanked, only the turntable 3 needs to be rotated. When the roller 504 contacts the blanking rail 503, the roller 504 rises along the blanking rail 503 until the roller 504 moves onto the blanking rail 503, causing the roller 504 to move upward, realizing the automatic action on the jacking assembly 6, thereby achieving the blanking operation. At the same time, it can cooperate with the adjustment assembly 10 to detect the cap, enabling the jacking assembly 6 to jack up the uncompressed cap and lithium battery; the setting of the pressing assembly 7 can achieve the pressing function of the lithium battery and the cap, firmly clamping the cap on the lithium battery, and at the same time providing a driving force to actuate the pushing assembly 8 to realize the movement of the pushing assembly 8, thereby transmitting the force; the setting of the pushing assembly 8 connects the pushing cylinder 802 with the adjustment cylinder 1001 and the detection cylinder 902. When connected to the detection cylinder 902, it realizes the detection of the pressing degree of the cap. When connected to the adjustment cylinder 1001, it realizes the connection with the sliding assembly 5, thereby detecting the uncompressed cap and improving the flexibility of the device; the setting of the detection assembly 9 uses the pressure sensing sheet 906 to detect the pressure, thereby realizing the detection of the pressing degree of the cap. It controls the connection between the detection cylinder 902 and the pushing cylinder 802 using the solenoid valve 1 909, and uses the retraction of the movable rod 904 and the horizontal straight rack 9011 to jack up the uncompressed cap and lithium battery; the setting of the adjustment assembly 10 uses the solenoid valve 2 1007 to control the connection between the adjustment cylinder 1001 and the pushing cylinder 802. When the cap is not compressed, the adjustment gear 1005 causes the retraction of the horizontal straight rack 9011 to drive the jacking gear to move upward, thereby controlling the jacking action of the ejector rod 602 and the top plate 601; the setting of the welding mechanism 11 uses the robotic arm 1102 to adjust the position of the ring laser welding head 1103, facilitating the welding action of the ring laser welding head 1103 on the lithium battery and the cap, facilitating ring welding and improving the welding effect; the setting of the pushing component 12 enables the device to push the jacked-up lithium battery and cap, thereby ejecting the uncompressed cap and lithium battery, improving the product yield, and ejecting the welded cap and lithium battery from the turntable 3 for centralized collection, achieving the effect of automatic blanking of the cap and lithium battery and improving the automation function of the device.

[0066] This solution can successively perform operations such as pressing, detecting, welding, and blanking on lithium batteries and caps, thereby realizing the closed-loop operation of the device, achieving continuous operation on multiple groups of lithium batteries and caps, and being able to detect the pressing degree of lithium batteries and caps, and rejecting the lithium batteries and caps that are not tightly pressed, so as to ensure the yield rate of lithium batteries, improve market competitiveness, and avoid damage to lithium batteries by the welding mechanism 11, improve the protection effect on lithium batteries, and improve the production efficiency of lithium batteries.

[0067] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A welding assembly for a lithium battery cap, characterized in that, It includes a carrier plate (1), on which a rotating mechanism (2) is provided. A turntable (3) is provided on the rotating mechanism (2), and a plurality of receiving grooves (4) for placing lithium batteries are formed on the turntable (3). A sliding assembly (5) is provided on the carrier plate (1), and a plurality of jacking assemblies (6) corresponding to the receiving grooves (4) are provided on the sliding assembly (5). The output end of the jacking assembly (6) is located in the receiving groove (4). A pressing-down assembly (7) for pressing the cap on the lithium battery is provided on the carrier plate (1). A pushing assembly (8) is provided on the pressing-down assembly (7). A detection assembly (9) for detecting the pressing degree of the cap is connected to the pushing assembly (8), and an adjusting assembly (10) connected to the detection assembly (9) is provided on the pushing assembly (8). Wherein, when the detection assembly (9) detects that the cap is not tightly pressed, the pushing assembly (8) forces the adjusting assembly (10) to be connected to the sliding assembly (5). When the pressing-down assembly (7) retracts, the pushing assembly (8) drives the jacking assembly (6) to jack up the lithium battery and the cap upward through the detection assembly (9) and the adjusting assembly (10). A welding mechanism (11) for welding the lithium battery and the cap is provided on the carrier plate (1), and a pushing assembly (12) for pushing the lithium battery and the cap jacked up by the jacking assembly (6) is provided on the carrier plate (1).

2. The welding assembly of a lithium battery cap according to claim 1, wherein The rotating mechanism (2) includes a motor (201) installed on the carrier plate (1). A rotating rod (202) connected to the turntable (3) is connected to the carrier plate (1) by a bearing. A driving gear (203) is fixedly sleeved on the output shaft of the motor (201), and a driven gear (204) meshing with the driving gear (203) is fixedly sleeved on the rotating rod (202).

3. The welding assembly of a lithium battery cap according to claim 2, wherein, The jacking assembly (6) includes a top plate (601) disposed in the receiving groove (4). The top plate (601) is adapted to the receiving groove (4). A jacking rod (602) penetrating through the receiving groove (4) is provided on the top plate (601). An installation block (603) is provided on the jacking rod (602), and a first spring (604) sleeved on the outer circle of the jacking rod (602) is provided between the installation block (603) and the turntable (3).

4. The welding assembly of a lithium battery cap according to claim 3, characterized in that, The sliding assembly (5) includes a support rod (501) disposed on the carrier plate (1). A circular guide rail (502) is provided on the support rod (501). A blanking convex rail (503) is provided on the circular guide rail (502). A roller (504) adapted to the circular guide rail (502) is installed on the installation block (603). A connecting rod (505) is provided on the installation block (603), and a jacking rack (506) is provided on the connecting rod (505).

5. The welding assembly of a lithium battery cap according to claim 4, wherein, The pressing component (7) includes a first fixed plate (701) disposed on the carrier plate (1). A hydraulic push rod (702) is installed on the first fixed plate (701), and a pressing die (703) adapted to the cap and the lithium battery is provided at the output end of the hydraulic push rod (702).

6. The welding assembly of a lithium battery cap according to claim 5, wherein, The pushing component (8) includes a cross bar (801) disposed at the output end of the hydraulic push rod (702). The cross bar (801) penetrates through the first fixed plate (701). A pushing cylinder (802) is provided on the first fixed plate (701). A pushing piston (803) is disposed inside the pushing cylinder (802). A push rod (804) penetrating through the pushing cylinder (802) is connected to the pushing piston (803). The cross bar (801) is connected to the push rod (804). An air duct (805) is provided on the pushing cylinder (802).

7. The welding assembly of a lithium battery cap according to claim 6, characterized in that, The detecting component (9) includes a second fixed plate (901) disposed on the carrier plate (1). A detecting cylinder (902) communicated with the air duct (805) is provided on the second fixed plate (901). A pressing piston (903) is disposed inside the detecting cylinder (902). A movable rod (904) penetrating through the detecting cylinder (902) is provided on the pressing piston (903). A detecting rod (905) penetrating through the movable rod (904) is provided at the end of the movable rod (904). A pressure sensing piece (906) is provided at the end of the detecting rod (905). A detecting block (907) for detecting the cap is provided on the pressure sensing piece (906). A second spring (908) sleeved on the outer circle of the detecting rod (905) is provided between the pressure sensing piece (906) and the movable rod (904). An electromagnetic valve one (909) is installed on the air duct (805). A vertical rod (9010) is provided on the movable rod (904), and a horizontal straight rack (9011) is provided on the vertical rod (9010).

8. A welding assembly for a lithium battery cap according to claim 7, characterized in that, The adjusting component (10) includes an adjusting cylinder (1001) disposed on the second fixed plate (901). An adjusting piston (1002) is disposed inside the adjusting cylinder (1001). An adjusting rod (1003) penetrating through the adjusting cylinder (1001) is provided on the adjusting piston (1002). A support block (1004) is provided on the adjusting rod (1003). An adjusting gear (1005) meshing with the horizontal straight rack (9011) is connected to the support block (1004) by a bearing. A branch pipe (1006) communicated with the air duct (805) is provided on the adjusting cylinder (1001). An electromagnetic valve two (1007) is installed on the branch pipe (1006).

9. The welding assembly of a lithium battery cap according to claim 8, wherein, The welding mechanism (11) includes a third fixed plate (1101) disposed on the carrier plate (1). A robotic arm (1102) is provided on the third fixed plate (1101). An annular laser welding head (1103) is installed on the robotic arm (1102).

10. The welding assembly of a lithium battery cap according to claim 9, wherein, The pushing component (12) includes a load-bearing rod (1201) arranged on the third fixing plate (1101), a suspension plate (1202) is arranged on the load-bearing rod (1201), two groups of electric push rods (1203) are arranged on the suspension plate (1202), and an arc-shaped pushing plate (1204) is arranged at the output end of the electric push rod (1203).

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