Automatic helium detection equipment for square-shell battery cover plate

Abstract

The utility model discloses automatic helium detection equipment for a square-shell battery cover plate, which comprises a mixed detection test case and a second motor linear module, a recheck test case is arranged on one side of the mixed detection test case, a helium mass spectrometer case is arranged on the back of the recheck test case and the mixed detection test case, and a material taking assembly is arranged in the mixed detection test case. When the automatic feeding device is used, the battery cover plate can be adsorbed through the suction cups, the first motor linear module is started to move the first suction cup frame to the top of the lower die, the suction cups do not adsorb the battery cover plate, and therefore the battery cover plate is placed on the top of the lower die, and automatic feeding of the battery cover plate is completed; the battery cover plate qualified after reinspection is adsorbed through suction cups on the surface of a second suction cup frame, at the moment, a second motor linear module drives the second suction cup frame to reset, the battery cover plate qualified after inspection is placed on the surface of a discharging conveying belt to be discharged, and therefore automatic discharging is achieved. And the efficiency of detecting the battery cover plate can be greatly improved through automatic feeding and automatic discharging.

Description

Technical Field

[0001] The utility model belongs to the technical field of helium inspection of square shell battery cover plates, and in particular relates to automatic helium inspection equipment for square shell battery cover plates. Background Art

[0002] During battery production, it is necessary to conduct leakage inspections on the positive pole position, explosion-proof valve position and negative pole position of the battery cover respectively, so as to ensure the sealing of the battery and ensure that the sealing performance of the produced batteries meets the requirements.

[0003] Existing vacuum helium inspection equipment for battery covers generally includes a workbench; a feeding conveyor belt; a product centering device; a helium inspection upper mold mechanism; and a helium inspection lower mold mechanism. Through the product centering device, the helium inspection upper mold mechanism, the helium inspection lower mold mechanism, the helium spraying mechanism, the re-inspection device and the cooperation of each group of manipulators and each group of conveyor belts, the helium inspection efficiency and re-inspection efficiency of lithium battery covers are improved, and the degree of automation is high. However, when performing helium inspection on the battery covers, the operator is required to pick up the battery covers to be inspected one by one and accurately place them in the loading area or fixture of the inspection equipment, and also ensure the accuracy and stability of the placement of the battery covers. When processing a large number of battery covers, the speed of manual loading is relatively slow, which leads to reduced inspection efficiency. Utility Model Content

[0004] The utility model aims to provide an automatic helium inspection device for square shell battery cover to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, the utility model provides the following technical solution: an automatic helium inspection device for square shell battery cover, comprising:

[0006] A mixed inspection test box, a re-inspection test box is provided on one side of the mixed inspection test box and the re-inspection test box is connected to the mixed inspection test box, a helium mass spectrometer tester box is provided on the back of the re-inspection test box and the mixed inspection test box, and a material picking component is provided in the mixed inspection test box, when the battery cover is driven to move to the bottom of the first suction cup frame by the feeding conveyor belt of the feeding component, so that the first suction cup frame moves toward the battery cover and absorbs the battery cover through the suction cup on the surface of the first suction cup frame, the first motor linear module in the mixed inspection test box drives the first suction cup frame to move to the lower mold for detection, thereby completing automatic feeding;

[0007] The second motor linear module is arranged in the re-inspection test box, and the surface of the second motor linear module is transmission-connected with a second suction cup frame, the second motor linear module drives the second suction cup frame to move, and after the suction cups on the surface of the second suction cup frame adsorb the battery cover of the inspected good products, the battery cover is transported to the unloading conveyor belt arranged in the re-inspection test box, so that the unloading conveyor belt transports and unloads the inspected good products.

[0008] Preferably, the first suction cup frame and the second suction cup frame are respectively connected to the first motor linear module and the second motor linear module through a moving block, a cylinder is provided on the surface of the moving block and the piston rod of the cylinder is respectively connected to the first suction cup frame and the second suction cup frame, a barcode scanner is provided on one side of the lower mold, and a waste conveyor belt is provided at one end of the first motor linear module.

[0009] Preferably, three sets of transmission housings are provided in the mixed inspection test box, and a screw is rotatably connected in the transmission housing, and the lower mold is transmission-connected to the surface of the screw through a screw nut, and a motor is provided on one side of the screw and the output shaft of the motor is connected to the screw.

[0010] Preferably, a mounting frame is provided in the mixed inspection test box and located on the top of the three groups of transmission shells, and an upper mold is slidably connected to the surface of the mounting frame. A cylinder is also provided on the surface of the mounting frame, and the piston rod of the cylinder is connected to the upper mold.

[0011] Preferably, a dust collector and a CCD device are provided on the surface of the loading conveyor belt, and the surfaces of the loading conveyor belt and the unloading conveyor belt are both rotatably connected to a flip wheel for flipping the battery cover, and one side of the flip wheel is transmission-connected to a motor.

[0012] Preferably, the re-inspection test box is also provided with two sets of lower molds for re-inspection and a U-shaped frame is provided on one side of the lower mold, a cylinder is provided on the top surface of the U-shaped frame and the piston rod of the cylinder is movable through the U-shaped frame and connected to the two sets of upper molds provided in the re-inspection test box.

[0013] Preferably, a mixed inspection defect conveyor belt is provided in the re-inspection test chassis and on one side of the unloading conveyor belt, and large fans are provided on the top of the re-inspection test chassis and the mixed inspection test chassis, on the surface of the helium mass spectrometer chassis, and at one end of the transmission housing.

[0014] Preferably, a plurality of testers and a vacuum pump are provided in the helium mass spectrometer chassis.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: By placing the battery cover plate on the surface of the feeding conveyor belt, the feeding conveyor belt conveys the battery cover plate and moves it in the direction of the turning wheel. The motor at the turning wheel works to drive the turning wheel to rotate. The card slots on the surface of the turning wheel come into contact with the battery cover plate, causing the turning wheel to drive the battery cover plate to turn over and change its face, and through the feeding conveyor belt to the bottom of the first suction cup frame. The air cylinder on the surface of the moving block starts, driving the first suction cup frame to move towards the battery cover plate. And since several suction cups provided on the surface of the first suction cup frame are connected to the vacuum generator on the surface of the first suction cup frame, the air pumped by the vacuum generator forms a negative pressure state in the pipeline connected to the suction cups. Thus, the battery cover plate can be adsorbed by the suction cups. After adsorption, the air cylinder drives the first suction cup frame to reset, and the first motor linear module is started to move the first suction cup frame to the top of the lower mold, and the vacuum generator is turned off. The suction cups are disengaged from the adsorption of the battery cover plate, so that the battery cover plate is placed on the top of the lower mold, thus completing the automatic feeding of the battery cover plate;

[0016] And after the tester in the helium mass spectrometer chassis detects that the battery cover plate is qualified, the lead screw rotates to move the lower mold towards the end close to the second motor linear module, and the second motor linear module is started to drive the second suction cup frame to move to the top of the battery cover plate on the surface of the lower mold. The battery cover plate after re-inspection is adsorbed by the suction cups on the surface of the second suction cup frame. At this time, the second motor linear module drives the second suction cup frame to reset, and places the battery cover plate after inspection on the surface of the discharging conveyor belt for discharging, thus realizing automatic discharging. The efficiency of detecting the battery cover plate can be greatly enhanced through automatic feeding and automatic discharging. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a structural schematic diagram of the present utility model;

[0018] Figure 2 is a structural schematic diagram inside the mixing test chassis of the present utility model;

[0019] Figure 3 is a structural schematic diagram inside the re-inspection test chassis of the present utility model;

[0020] Figure 4 is a structural schematic diagram of the lower mold and the upper mold of the present utility model;

[0021] Figure 5 is a structural schematic diagram inside the helium mass spectrometer chassis of the present utility model.

[0022] In the figure: 1. Mixed inspection test chassis; 2. Re-inspection test chassis; 3. Helium mass spectrometer chassis; 4. Loading conveyor belt; 5. First suction cup rack; 7. First motor linear module; 8. Lower die; 9. Second motor linear module; 10. Second suction cup rack; 11. Unloading conveyor belt; 12. Transmission housing; 13. Screw rod; 14. Upper die; 15. Barcode scanner; 16. Waste conveyor belt; 17. Dust collector; 18. CCD device; 19. Flip wheel; 20. U-shaped rack; 21. Mixed inspection defective conveyor belt; 22. Large fan; 23. Tester; 24. Vacuum pump. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] The utility model provides Figures 1-5 The automatic helium inspection equipment for square shell battery cover shown in the figure comprises:

[0025] A mixed inspection test box 1, a re-inspection test box 2 is provided on one side of the mixed inspection test box 1 and the re-inspection test box 2 is connected to the mixed inspection test box 1, a helium mass spectrometer tester box 3 is provided on the back of the re-inspection test box 2 and the mixed inspection test box 1, and a material picking component is provided in the mixed inspection test box 1, when the battery cover is driven to move to the bottom of the first suction cup frame 5 by the feeding conveyor belt 4 of the feeding component, so that the first suction cup frame 5 moves toward the battery cover and absorbs the battery cover through the suction cup on the surface of the first suction cup frame 5, the first motor linear module 7 in the mixed inspection test box 1 drives the first suction cup frame 5 to move to the lower mold 8 for detection, thereby completing automatic feeding;

[0026] The second motor linear module 9 is arranged in the re-inspection test box 2, and the second motor linear module 9 is connected to the second suction cup frame 10 on its surface. The second motor linear module 9 drives the second suction cup frame 10 to move, and after the suction cups on the surface of the second suction cup frame 10 adsorb the battery cover of the inspected good products, the battery cover is transported to the unloading conveyor belt 11 arranged in the re-inspection test box 2, so that the unloading conveyor belt 11 transports and unloads the inspected good products. The first motor linear module 7 and the second motor linear module 9 are provided with a plurality of cleaning rollers on their surfaces. When the lower mold 8 moves to drive the battery cover on its surface to move, the cleaning rollers can contact the battery cover, and the sealing ring of the battery cover can be cleaned to avoid being contaminated by dust and debris.

[0027] The first suction cup frame 5 and the second suction cup frame 10 are respectively connected to the first motor linear module 7 and the second motor linear module 9 through a moving block. A cylinder is provided on the surface of the moving block and the piston rod of the cylinder is respectively connected to the first suction cup frame 5 and the second suction cup frame 10. A scanner 15 is provided on one side of the lower mold 8. A waste conveyor belt 16 is provided at one end of the first motor linear module 7. During the helium inspection process, the barcode or QR code on the battery cover can be scanned by the scanner 15. The scanned information is bound to the test result and recorded in the database. The test result of each product can be matched with its corresponding information, which is convenient for subsequent data analysis and problem tracing. The battery cover that fails the code scanning can be conveyed to the waste conveyor belt 16 by the first motor linear module 7 for discharge to the manual feeding port. The manual feeding port is the NG feeding port. A safety grating is added. The NG belt stops rotating during manual feeding. All doors are safety doors. The equipment stops operating after opening.

[0028] The mixed inspection test box 1 is provided with three sets of transmission housings 12, and a screw rod 13 is rotatably connected inside the transmission housing 12, and the lower mold 8 is connected to the surface of the screw rod 13 through a screw nut. A motor is provided on one side of the screw rod 13, and the output shaft of the motor is connected to the screw rod 13.

[0029] A mounting frame is provided in the mixed inspection test box 1 and on the top of the three transmission housings 12 , and an upper mold 14 is slidably connected to the surface of the mounting frame. A cylinder is also provided on the surface of the mounting frame, and the piston rod of the cylinder is connected to the upper mold 14 .

[0030] The surface of the loading conveyor belt 4 is provided with a dust collector 17 and a CCD device 18. The surfaces of the loading conveyor belt 4 and the unloading conveyor belt 11 are both rotatably connected with a flip wheel 19 for flipping the battery cover, and one side of the flip wheel 19 is transmission-connected to a motor. The dust collector 17 is sealed on the loading conveyor belt 4, and dust is removed from the product by blowing upward and sucking downward. The CCD device 18 can identify the front and back sides of the product.

[0031] The re-inspection test box 2 is also provided with two groups of lower molds 8 for re-inspection, and a U-shaped frame 20 is provided on one side of the lower mold 8. A cylinder is provided on the top surface of the U-shaped frame 20, and the piston rod of the cylinder movably penetrates the U-shaped frame 20 and is connected with the two groups of upper molds 14 provided in the re-inspection test box 2. The second motor linear module 9 sends the product to the mold closing position of the upper mold 14, and the upper mold 14 is pressed down to start the test. After the test is completed, the second motor linear module 9 sends the product to the surface of the unloading conveyor belt 11 for unloading, thereby realizing automatic unloading.

[0032] Inside the re-inspection test chassis 2 and on one side of the blanking conveyor belt 11, there is a mixed-inspection defective conveyor belt 21. On the tops of the re-inspection test chassis 2 and the mixed-inspection test chassis 1, on the surface of the helium mass spectrometer chassis 3, and at one end of the transmission housing 12, there are large fans 22. Through the large fans 22, the residual helium gas inside the equipment can be discharged.

[0033] Inside the helium mass spectrometer chassis 3, there are several testers 23 and a vacuum pump 24. The battery cover plate is detected by the testers 23, and the vacuum pump 24 can be used to create and maintain a certain vacuum degree around the battery cover plate to be tested. The vacuum environment is the basis for ensuring the accuracy and stability of helium detection.

[0034] For this automatic helium detection equipment for square shell battery cover plates, the battery cover plate is placed on the surface of the loading conveyor belt 4. The loading conveyor belt 4 conveys the battery cover plate and moves it in the direction of the flipping wheel 19. The motor at the flipping wheel 19 works to drive the flipping wheel 19 to rotate. The card slots on the surface of the flipping wheel 19 come into contact with the battery cover plate, causing the flipping wheel 19 to drive the battery cover plate to flip and change its surface. Under the continuous conveyance of the loading conveyor belt 4, the dust on the surface of the battery cover plate is adsorbed and removed by the dust collector 17, and it reaches the bottom of the first suction cup rack 5 through the loading conveyor belt 4. The cylinder on the surface of the moving block starts, driving the first suction cup rack 5 to move towards the battery cover plate. Since several suction cups on the surface of the first suction cup rack 5 are connected to the vacuum generator on the surface of the first suction cup rack 5, the air pumped by the vacuum generator forms a negative pressure state in the pipeline connected to the suction cups. Thus, the battery cover plate can be adsorbed by the suction cups. After adsorption, the cylinder drives the first suction cup rack 5 to reset, and the first linear motor module 7 is started to move the first suction cup rack 5 to the top of the lower mold 8. Then, the vacuum generator stops working, and the suction cups release the adsorption on the battery cover plate, so that the battery cover plate is placed on the top of the lower mold 8, thus completing the automatic loading of the battery cover plate.

[0035] The motor on the surface of the transmission housing 12 is started to work, driving the lead screw 13 to rotate. The lead screw 13 drives the lower mold 8 inside the transmission housing 12 to move to the bottom of the upper mold 14. By starting the cylinder on the top of the upper mold 14 to work, the upper mold 14 is driven to move towards the lower mold 8, and the upper mold 14 presses down, applying pressure evenly, so that each part of the battery cover plate is evenly stressed during detection, ensuring that helium can fully penetrate and detect possible leakage points, thereby detecting the battery cover plate inside the lower mold 8.

[0036] After the tester 23 in the helium mass spectrometer chassis 3 detects that the battery cover plate passes the inspection, the lead screw 13 rotates to move the lower mold 8 towards the end close to the second motor linear module 9, and the second motor linear module 9 is started to drive the second suction cup holder 10 to move to the top of the battery cover plate on the surface of the lower mold 8. The suction cups on the surface of the second suction cup holder 10 adsorb the battery cover plate after passing the re-inspection. At this time, the second motor linear module 9 drives the second suction cup holder 10 to reset, and places the battery cover plate that has passed the inspection on the surface of the blanking conveyor belt 11 for blanking, thus realizing automatic blanking;

[0037] When the tester 23 in the helium mass spectrometer chassis 23 detects that one group of battery cover plates fails the inspection, the lead screw 13 rotates to move the lower mold 8 towards the end close to the second motor linear module 9, and the second motor linear module 9 is started to drive the second suction cup holder 10 to move to the top of the battery cover plate on the surface of the lower mold 8. The cylinder on the surface of the moving frame is started, so that the piston rod of the cylinder drives the second suction cup holder 10 to move towards the battery cover plate, and a negative pressure state is generated by a plurality of suction cups on the surface of the second second suction cup holder 10 to adsorb the battery cover plate, and the second motor linear module 9 drives the adsorbed second suction cup holder 10 to move to the top of the lower mold 8 on the surface of the re-inspection test chassis 2. After the suction cups are disengaged from the adsorption, the battery cover plate is placed on the surface of the lower mold 8. At this time, the motor in the re-inspection test chassis 2 drives the lead screw 13 to rotate, so that the lead screw 13 drives the lower mold 8 to move to the bottom of the upper mold 14, and the cylinder on the surface of the U-shaped frame 20 drives the upper mold 14 to approach the lower mold 8 and presses down the lower mold 8 to re-inspect the battery cover plate in the lower mold 8. When the battery cover plate in the lower mold 8 passes the re-inspection, the second motor linear module 9 is started to drive the second suction cup holder 10 to move to the battery cover plate in the lower mold 8, and the suction cups on the surface of the second suction cup holder 10 adsorb the battery cover plate after passing the re-inspection. At this time, the second motor linear module 9 drives the second suction cup holder 10 to reset, and places the battery cover plate that has passed the re-inspection on the surface of the blanking conveyor belt 11 for blanking.

[0038] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An automatic helium leak detection device for the cover plate of a square shell battery, characterized in that, Including: A mixed detection test chassis (1), on one side of the mixed detection test chassis (1) there is a re - detection test chassis (2), and the re - detection test chassis (2) is communicated with the mixed detection test chassis (1). On the back of the re - detection test chassis (2) and the mixed detection test chassis (1) there is a helium mass spectrometer chassis (3). Inside the mixed detection test chassis (1) there is a material - taking component. When the feeding conveyor belt (4) of the material - taking component drives the battery cover plate to move to the bottom of the first suction cup rack (5), the first suction cup rack (5) moves towards the battery cover plate and adsorbs the battery cover plate through the suction cups on the surface of the first suction cup rack (5). Then, the first motor linear module (7) inside the mixed detection test chassis (1) drives the first suction cup rack (5) to move to the lower die (8) for detection, thus completing automatic feeding. A second motor linear module (9), the second motor linear module (9) is arranged inside the re - detection test chassis (2), and the surface of the second motor linear module (9) is drivingly connected with a second suction cup rack (10). The second motor linear module (9) drives the second suction cup rack (10) to move, and after adsorbing the battery cover plate of the detected good product through the suction cups on the surface of the second suction cup rack (10), it conveys the battery cover plate to the discharging conveyor belt (11) arranged inside the re - detection test chassis (2), so that the discharging conveyor belt (11) conveys and discharges the detected good product.

2. The automatic helium leak detection device for the cover plate of a square shell battery according to claim 1, characterized in that: The first suction cup rack (5) and the second suction cup rack (10) are respectively drivingly connected with the first motor linear module (7) and the second motor linear module (9) through moving blocks. On the surface of the moving blocks there are cylinders, and the piston rods of the cylinders are respectively connected with the first suction cup rack (5) and the second suction cup rack (10). On one side of the lower die (8) there is a code scanner (15), and at one end of the first motor linear module (7) there is a waste conveyor belt (16).

3. The automatic helium leak detection device for the square shell battery cover plate according to claim 1, wherein: Inside the mixed detection test chassis (1) there are three groups of transmission cases (12), inside the transmission cases (12) there are rotating lead screws (13), and the lower die (8) is drivingly connected to the surface of the lead screw (13) through a lead screw nut. On one side of the lead screw (13) there is a motor, and the output shaft of the motor is connected to the lead screw (13).

4. The automatic helium leak detection device for the square shell battery cover plate according to claim 3, characterized in that: Inside the mixed detection test chassis (1) and on top of the three groups of transmission cases (12) there is a mounting frame, and on the surface of the mounting frame there is a sliding upper die (14). On the surface of the mounting frame there is also a cylinder, and the piston rod of the cylinder is connected with the upper die (14).

5. The automatic helium leak detection device for the cover plate of a square shell battery according to claim 1, characterized in that: On the surface of the feeding conveyor belt (4) there are a dust collector (17) and a CCD device (18). On the surfaces of the feeding conveyor belt (4) and the discharging conveyor belt (11) there are respectively rotating turnover wheels (19) for turning over the battery cover plate, and one side of the turnover wheel (19) is drivingly connected to a motor.

6. The automatic helium leak detection device for the cover plate of a square shell battery according to claim 4, characterized in that: Inside the re - detection test chassis (2) there are also two groups of lower dies (8) for re - detection, and on one side of the lower die (8) there is a U - shaped frame (20). On the top surface of the U - shaped frame (20) there is a cylinder, and the piston rod of the cylinder movably passes through the U - shaped frame (20) and is connected with two groups of upper dies (14) arranged inside the re - detection test chassis (2).

7. The automatic helium leak detection equipment for the cover plate of a square shell battery according to claim 3, characterized in that: Inside the re-inspection test chassis (2) and on one side of the blanking conveyor belt (11), there is a belt for defective products in mixed inspection (21). On the tops of the re-inspection test chassis (2) and the mixed inspection test chassis (1), on the surface of the helium mass spectrometer chassis (3), and at one end of the transmission housing (12), there are large fans (22).

8. The automatic helium leak detection device for the square shell battery cover plate according to claim 1, wherein: Inside the helium mass spectrometer chassis (3), there are several testers (23) and vacuum pumps (24).

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