Automatic welding platform for battery tabs

Abstract

The utility model relates to an automatic welding platform for battery tabs, which comprises a working table and a laser welding machine arranged below the working table, a welding head of the laser welding machine is arranged above the working table through a lifting mechanism, and the working table is provided with a conveying frame below the welding head. A double-row synchronous belt which is transversely arranged and is driven by a motor is rotationally mounted on the conveying frame, and a tool for placing a battery and a tab is arranged on the double-row synchronous belt; two visual inspection cameras located above the double-row synchronous belt and below the double-row synchronous belt are installed on one side of the lifting mechanism in the conveying direction of the double-row synchronous belt on the workbench through fixing frames respectively. The laser welding device is simple in structure, high in universality and high in laser welding efficiency, and the welding efficiency of workpieces can be greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of laser welding, in particular to an automatic welding platform for battery tabs. Background Art

[0002] At present, lithium batteries are being promoted and used more and more widely, and the production and processing of lithium batteries are becoming increasingly important. Lithium batteries need to be connected to mobile phones, laptops and other electronic devices through welding pole ears, and the process of battery pole ear welding is becoming more and more important.

[0003] At present, the automation level of battery tab welding in the existing technology is low, the consistency of battery tab welding effect is poor, and the welding relies on manual operation, resulting in low production efficiency and processing accuracy, which is not conducive to the long-term development of the enterprise. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a battery pole lug automatic welding platform, which improves the automation level of battery pole lug welding and the consistency of battery pole lug welding effects. Automatic welding can be achieved by starting the welding platform only after manual loading and unloading.

[0005] The utility model is realized through the following technical solutions:

[0006] Provided is a battery tab automatic welding platform, comprising a workbench and a laser welding machine installed below the workbench, the welding head of the laser welding machine is installed above the workbench through a lifting mechanism, the workbench is provided with a conveyor frame below the welding head, a double-row synchronous belt which is laterally arranged and driven by a motor is rotatably installed on the conveyor frame, a tooling for placing batteries and tabs is provided on the double-row synchronous belt, and two visual inspection cameras located above and below the double-row synchronous belt are respectively installed on the workbench through a fixed frame on one side of the lifting mechanism along the conveying direction of the double-row synchronous belt.

[0007] Furthermore, a control panel is installed on the workbench, which is electrically connected to the laser welding machine, the motor and the visual inspection camera respectively. An electrical cabinet for power supply is also provided under the workbench.

[0008] The control panel facilitates the input of parameters for controlling the overall operation of the equipment, and the electrical cabinet is used to supply power to various electrical equipment.

[0009] Furthermore, the tooling includes a tooling base, which is provided with a slide groove perpendicular to the conveying direction and a support plate for sliding limitation. The tooling base is provided with a rear limit block for limiting the support plate at the rear of the slide groove, and the tooling base is respectively provided with spring tightening structures for clamping and limiting the support plate on both sides of the slide groove. A battery cell groove for accommodating battery cells is provided on the support plate, and a magnet for adsorbing the battery cells is embedded on the bottom surface of the battery cell groove. A positioning plate for supporting and limiting the pole ear is extended from the front of the slide groove of the tooling base.

[0010] Preferably, a light curtain is installed on one side of the workbench in the length direction of the double-row synchronous belt.

[0011] By setting up a light curtain, when a human body is detected passing through, the equipment operation will be stopped in time to ensure the safety of the operator.

[0012] Furthermore, a first proximity switch for detecting that the tooling is in place is installed between the double-row synchronous belts below the welding head at one end of the conveyor frame, and a second proximity switch for detecting material unloading is installed between the double-row synchronous belts at the other end of the conveyor frame. The two proximity switches are electrically connected to the motor respectively.

[0013] The first proximity switch is set to detect whether the tooling is in the welding position to ensure accurate welding of the welding head. The second proximity switch is set to unload the tooling after welding and photographing, so that the unloading synchronous belt can be automatically stopped.

[0014] Furthermore, the lifting mechanism includes a vertical plate connected to the fixed base through a fixed base, a screw is vertically installed on the top of the vertical plate for vertical rotation, a handwheel is installed on the upper end of the screw, and slide rails are vertically installed on both sides of the vertical plate. A slide seat is slidably connected between the two slide rails, a mounting plate for connecting the welding head is provided on the slide seat, and a nut connected to the slide seat is threadedly connected on the screw.

[0015] The lifting mechanism adopts a screw nut mechanism. By manually turning the handwheel, the position of the nut on the screw is adjusted, which can drive the welding head to rise and fall to facilitate the adjustment of the distance between the welding head and the workpiece, ensuring welding stability and accuracy.

[0016] Furthermore, a pressing mechanism is installed on the side of the conveying frame opposite to the visual inspection camera through a connecting plate, and the pressing mechanism includes a pressing cylinder vertically installed on the horizontal plate of the connecting plate, and the piston rod of the pressing cylinder is downwardly connected to a connecting block, and a guide rail is vertically installed on the vertical plate of the connecting plate, and a slider connected to the connecting block is slidably connected on the guide rail, a lifting plate is connected to the connecting block, and a buffer pressure plate parallel to the lifting plate is connected to the bottom of the lifting plate through a guide rod and a spring.

[0017] By setting up a downward pressure mechanism and using the downward pressure cylinder to push the lifting plate down, the buffer pressure plate is driven downward to press the battery to make it fit the tooling, ensuring that the focal length of the visual inspection camera for each welding workpiece remains constant, thereby improving the detection accuracy and stability of the visual inspection camera.

[0018] Beneficial effects of the utility model:

[0019] The utility model has a simple structure, strong versatility, and high laser welding efficiency. It improves the automation level of battery pole ear welding work, improves the automation level of battery pole ear welding, and ensures the consistency of battery pole ear welding effect. Automatic welding can be achieved by starting the welding platform after manual loading and unloading, which greatly improves welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0021] Figure 2 It is a structural schematic diagram of the workbench in the utility model.

[0022] Figure 3 It is a schematic diagram of the installation structure of the double-row synchronous belt and the conveyor frame in the utility model.

[0023] Figure 4 It is a schematic diagram of the installation structure of the lifting mechanism and the welding head in the utility model.

[0024] Figure 5 for Figure 4 Schematic diagram of the internal structure.

[0025] Figure 6 It is a structural schematic diagram of the downward pressing mechanism in the utility model.

[0026] Figure 7 for Figure 6 Left view of .

[0027] Figure 8 It is a schematic diagram of the installation structure of the fixing bracket and the visual inspection camera in the utility model.

[0028] Fig. 9 It is a structural schematic diagram of the tooling in the utility model.

[0029] As shown in the figure:

[0030] 1. Workbench, 2. Lifting mechanism, 3. Hand wheel, 4. Welding head, 5. Fixed frame, 6. Visual inspection camera, 7. Control panel, 8. Second proximity switch, 9. Light curtain, 10. Tooling, 11. Conveyor frame, 12. Double-row synchronous belt, 13. Fixed seat, 14. Connecting plate, 15. Down-pressing cylinder, 16. Motor, 17. Sealing plate, 18. Screw, 19. Mounting plate, 20. Through groove, 21. Scale line, 22. Vertical plate, 23. Slide rail, 24. Slide seat, 25. Buffer pressure plate, 26. Guide rail, 27. Slider, 28. Lifting plate, 29. Tooling base, 30. Slide groove, 31. Support plate, 32. Rear limit block, 33. Spring tightening structure, 34. Positioning plate, 35. Battery cell slot, 36. Magnet. DETAILED DESCRIPTION

[0031] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0032] A battery tab automatic welding platform comprises a workbench 1 and a laser welding machine installed under the workbench 1. The welding head 4 of the laser welding machine is installed above the workbench 1 through a lifting mechanism 2. In the present embodiment, the lifting mechanism 2 comprises a vertical plate 22 vertically connected to the fixed seat 13 through a fixed seat 13. A lead screw 18 is vertically rotatably installed on the top of the vertical plate 22. A hand wheel 3 is installed on the upper end of the lead screw 18. Slide rails 23 are vertically installed on both sides of the lead screw 18 of the vertical plate 22. A slide seat 24 is slidably connected between the two slide rails 23. A mounting plate 19 for connecting the welding head 4 is provided on the slide seat 24. A nut connected to the slide seat 24 is threadedly connected to the lead screw 18. The lifting mechanism 2 is manually operated. By turning the handwheel 3, the lead screw 18 is driven to rotate. The nut on the lead screw 18 moves up and down on the lead screw 18 to adjust the height position of the welding head 4 of the laser welding machine. In order to accurately control the moving distance of the welding head 4, a sealing plate 17 connected to the vertical plate 22 and wrapping the lead screw 18 and the slide rail 23 can be provided. A through groove 20 is vertically opened on the sealing plate 17. The connecting rod between the mounting plate 19 and the slide seat 24 passes through the through groove 20. A scale line 21 is set on one side of the through groove 20 to facilitate precise welding operations.

[0033] The workbench 1 is provided with a conveyor frame 11 below the welding head 4, on which a double-row synchronous belt 12 which is arranged horizontally and driven by a motor 16 is rotatably mounted, and on which a tool 10 for placing batteries and tabs is provided. Fig. 9As shown, the tooling 10 includes a tooling base 29, on which a slide groove 30 perpendicular to the conveying direction is provided, and a support plate 31 is provided for sliding limitation, and a rear limit block 32 for limiting the support plate 31 is provided at the rear of the slide groove 30 of the tooling base 29, and spring tightening structures 33 for clamping and limiting the support plate 31 are respectively provided on both sides of the slide groove 30 of the tooling base 29, and a battery cell groove 35 for accommodating battery cells is provided on the support plate 31, and a magnet 36 for adsorbing the battery cell is embedded and installed on the bottom surface of the battery cell groove 35, and a positioning plate 34 for supporting and limiting the pole ear is extended from the front of the slide groove 30 of the tooling base 29.

[0034] The workbench 1 is provided with two visual inspection cameras 6 respectively mounted above and below the double-row synchronous belt 12 through a fixing frame 5 on one side of the lifting mechanism 2 along the conveying direction of the double-row synchronous belt 12. The workbench 1 is provided with a light curtain 9 on one side of the length direction of the double-row synchronous belt 12. When the light curtain 9 senses that an object has passed, the equipment will be stopped, thereby improving the safety of the equipment.

[0035] A control panel 7 is also installed on the workbench 1 , and the control panel 7 is electrically connected to the laser welding machine, the motor 16 and the visual inspection camera 6 respectively. An electrical cabinet for power supply is also provided under the workbench 1 .

[0036] A first proximity switch for detecting that the tooling 10 is in place is installed between the double-row synchronous belts 12 below the welding head 4 at one end of the conveyor frame 11, and a second proximity switch 8 for detecting material unloading is installed between the double-row synchronous belts 12 at the other end of the conveyor frame 11, and the two proximity switches are electrically connected to the motor 16 respectively. When the first proximity switch senses that the tooling 10 is below the welding head 4, the double-row synchronous belt 12 stops running. After welding and visual inspection are completed, the double-row synchronous belt 12 restarts to drive the tooling 10 to move. When the second proximity switch 8 detects the tooling 10, the double-row synchronous belt 12 stops running, which is convenient for manual unloading.

[0037] In order to ensure the consistency of the focal length of the visual inspection camera 6 when taking pictures and inspecting each battery after welding, a pressing mechanism is installed on the conveying frame 11 on the side opposite to the visual inspection camera 6 through the connecting plate 14. The pressing mechanism includes a pressing cylinder 15 vertically installed on the horizontal plate of the connecting plate 14, and the piston rod of the pressing cylinder 15 is downwardly connected to a connecting block. A guide rail 26 is vertically installed on the vertical plate of the connecting plate, and a slider 27 connected to the connecting block is slidably connected to the guide rail 26. A lifting plate 28 is connected to the connecting block, and a buffer pressure plate 25 parallel to the lifting plate 28 is connected below the lifting plate 28 through a guide rod and a spring.

[0038] The working process of the utility model is as follows: the battery and the battery tab are manually placed on the tooling 10, and the double-row synchronous belt 12 is operated by the control panel 7 to rotate and drive the tooling 10 to move. When the tooling 10 moves to the bottom of the welding head 4 of the laser welding machine, the first proximity switch detects the tooling 10. At this time, the double-row synchronous belt 12 stops moving, and the laser welding head 4 can use laser to weld the battery tab. After welding, the double-row synchronous belt 12 drives the tooling 10 to move to the visual inspection camera 6. At this time, the pressing mechanism is started, and the piston rod of the pressing cylinder 15 moves downward, driving the slider to move down on the guide rail 26. At this time, the lifting plate 28 descends and drives the buffer pressure plate 25 below to press the battery downward, so that the battery is close to the tooling 10, ensuring that the focal length of the visual inspection camera 6 is consistent. The visual inspection camera 6 performs visual inspection on the tab welding point. After the inspection is completed, the double-row synchronous belt 12 drives the tooling 10 to continue to move. After the second proximity switch 8 detects the tooling 10, the double-row synchronous belt 12 stops moving, and manual unloading is performed at this time.

[0039] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or by adopting the existing technology, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A battery tab automatic welding platform, comprising a workbench and a laser welding machine installed under the workbench, characterized in that: The welding head of the laser welding machine is installed above the workbench through a lifting mechanism. A conveyor frame is arranged below the welding head on the workbench. A double-row synchronous belt which is arranged horizontally and driven by a motor is rotatably installed on the conveyor frame. The double-row synchronous belt is provided with a tooling for placing batteries and tabs. Two visual inspection cameras are respectively installed above and below the double-row synchronous belt on one side of the lifting mechanism along the conveying direction of the double-row synchronous belt.

2. The battery tab automatic welding platform according to claim 1, characterized in that: A control panel is also installed on the workbench, which is electrically connected to the laser welding machine, motor and visual inspection camera respectively. An electrical cabinet for power supply is also set under the workbench.

3. The battery tab automatic welding platform according to claim 1, characterized in that: The tooling includes a tooling base, which is provided with a slide groove perpendicular to the conveying direction and a support plate for sliding limitation. The tooling base is provided with a rear limit block for limiting the support plate at the rear of the slide groove, and the tooling base is respectively provided with spring tightening structures for clamping and limiting the support plate on both sides of the slide groove. A battery cell groove for accommodating battery cells is provided on the support plate, and a magnet for adsorbing the battery cells is embedded and installed on the bottom surface of the battery cell groove. A positioning plate for supporting and limiting the pole ear is extended from the front of the slide groove of the tooling base.

4. The battery tab automatic welding platform according to claim 1, characterized in that: A light curtain is installed on one side of the workbench along the length direction of the double-row synchronous belt.

5. The battery tab automatic welding platform according to claim 1, characterized in that: A first proximity switch for detecting that the tooling is in place is installed between the double-row synchronous belts below the welding head at one end of the conveyor frame, and a second proximity switch for detecting material unloading is installed between the double-row synchronous belts at the other end of the conveyor frame. The two proximity switches are electrically connected to the motor respectively.

6. The battery tab automatic welding platform according to claim 1, characterized in that: The lifting mechanism includes a fixed seat and a vertical plate vertically connected to the fixed seat, a lead screw is vertically installed on the top of the vertical plate, a hand wheel is installed on the upper end of the lead screw, slide rails are vertically installed on both sides of the lead screw, a slide seat is slidably connected between the two slide rails, a mounting plate for connecting the welding head is provided on the slide seat, and a nut connected to the slide seat is threadedly connected on the lead screw.

7. The battery tab automatic welding platform according to claim 1, characterized in that: A pressing mechanism is installed on the side of the conveying frame opposite to the visual inspection camera through a connecting plate, and the pressing mechanism includes a pressing cylinder vertically installed on the horizontal plate of the connecting plate, and the piston rod of the pressing cylinder is downwardly connected to a connecting block, and a guide rail is vertically installed on the vertical plate of the connecting plate, and a slider connected to the connecting block is slidably connected on the guide rail, and a lifting plate is connected to the connecting block, and a buffer pressure plate parallel to the lifting plate is connected to the bottom of the lifting plate through a guide rod and a spring.

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