Full-automatic leak hunting and size measuring sorting line for soft button battery

Abstract

The utility model discloses a soft button battery full-automatic leak hunting and dimension measuring sorting line, which comprises a feeding mechanism, a discharging mechanism, a leak hunting mechanism, a tab shaping and cutting mechanism and a dimension measuring mechanism, the leak hunting mechanism comprises a VOC leak hunting instrument, a leak hunting device and a leak hunting jig, a product to be detected is placed on the leak hunting jig, and the leak hunting device is connected with the VOC leak hunting instrument; the leak detection device is a test cavity with an opening in the bottom, and the test cavity is driven by a driving device to press downwards to seal and cover the leak detection jig and the product to be detected together; and the test cavity is connected with an air pipe and is connected with a vacuumizing device and an inflating device through the air pipe. Therefore, the whole leak hunting jig and the products on the jig can be covered by the test cavity, the leak hunting operation of a plurality of products can be completed at one time, and the efficiency is greatly improved. In addition, by arranging the retesting mechanism, the same batch of products with leakage products can be separately detected, so that defective products are removed, good products are left, and waste is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium battery production equipment technical field especially relates to a sorting line mainly used for the leakage detection, tab shaping and cutting, size measurement and other process operation of soft buckle battery. BACKGROUND

[0002] Soft buckle lithium battery has application in many fields, and before finally flowing into the market, the thickness, appearance and whether there is leakage of the battery need to be detected, and the tab needs to be shaped and cut if necessary to ensure that the battery flowing into the user is qualified. Each process needs corresponding processing or detection equipment, such as thickness measurement needs to use thickness measurement equipment, appearance detection needs to use CCD detection equipment, shaping and cutting need to use shaping and cutting equipment, leakage detection needs to use VOC leakage detector, etc. The above detection and processing process of the traditional lithium battery cell usually adopts single machine, or a machine has two or three kinds of function equipment, so it is necessary to combine multiple machines together to form a production line, and the automatic whole line integrated equipment is less, which leads to low production efficiency and high production cost, and it is difficult to meet the current high automation, integration and large batch production demand of lithium battery. For this reason, someone has invented a production line with higher integration and more complete functions, such as the long lead soft package lithium ion battery PACK line disclosed in Chinese invention patent CN117254127A, which can complete multiple process operations on one production line. However, the production line is too complex and the layout is not reasonable, which leads to a very long whole production line. At the same time, the structure of the VOC leakage detector is also very complex, and it can only measure leakage in single or double form, and cannot cover the whole fixture for simultaneous leakage detection, which is low in efficiency. In addition, although some equipment can realize simultaneous leakage detection of multiple products, when there are unqualified products in a batch of products, they need to be discarded together due to the inability to distinguish them individually, which will cause waste. CONTENT OF THE UTILITY MODEL

[0003] The utility model provides a soft buckle battery full-automatic leakage detection and size measurement sorting line with simpler structure, more reasonable design, higher working efficiency and accurate sorting of unqualified products, aiming at the defects of the prior art.

[0004] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a fully automatic leak testing and size measurement sorting line for soft button batteries, wherein a feeding mechanism, a discharging mechanism, a leak testing mechanism, a tab shaping and cutting mechanism, and a size measurement mechanism are provided on the workbench of the equipment. The feeding mechanism and the discharging mechanism are located at the beginning and end of the sorting line, respectively. The leak testing mechanism includes a VOC leak detector, a leak testing device, and a leak testing fixture. The product to be tested is placed on the leak testing fixture. The leak testing device is connected to the VOC leak detector. The leak testing fixture has multiple product placement positions. The leak testing device is a test chamber with an open bottom. The size of the bottom opening of the test chamber is larger than the size of the leak testing fixture. The test chamber is connected to a driving device. The driving device drives the test chamber to press down and seal the leak testing fixture together with the product to be tested. The test chamber is connected to an air pipe, which is connected to a vacuum pump and an inflation device.

[0005] Furthermore, the driving device adopts a downward pressure cylinder, which is mounted on a gantry frame, and the test chamber is connected to the bottom end of the cylinder rod of the downward pressure cylinder; the VOC leak detector is also mounted on the gantry frame, which is mounted on the workbench.

[0006] Furthermore, a vacuum angle valve and a solenoid valve are installed on the gantry frame, and each air pipe is connected to the vacuum pumping device and the air filling device through the vacuum angle valve and the solenoid valve respectively.

[0007] Furthermore, an electrical box is installed on the gantry frame, which houses the pressure cylinder, VOC leak detector, vacuum valve, and various solenoid valves.

[0008] Furthermore, the leak testing fixture is mounted on a slide, which is mounted on a linear module. The linear module passes under the test chamber and is connected to a servo motor, which drives the slide to move along the linear module.

[0009] Furthermore, each slide corresponds to a leak testing fixture, and support frames are provided on both sides of the linear module at positions opposite to the test cavity. When the test cavity is pressed down, the slide is supported by the support frames.

[0010] Furthermore, the leak detection mechanism includes two sets of test chambers and two leak detection fixtures, with one leak detection fixture corresponding to one test chamber, and each of the two test chambers connected to a VOC leak detector.

[0011] Furthermore, a retesting mechanism is also provided on the workbench, which is located next to the leak detection mechanism. The retesting mechanism has the same structure as the leak detection mechanism, including a retesting slide, and multiple retesting fixtures are provided on the retesting slide. The number of materials loaded in each retesting fixture is different, with a minimum of one.

[0012] As preferred, four retest jigs are arranged on the retest slide, and the loading quantities of the retest jigs are one, two, four and eight respectively, and the loading quantity of the leak detection jig is sixteen.

[0013] Further, the size measuring mechanism adopts a constant force thickness gauge, and a discharging positioning mechanism is arranged behind the size measuring mechanism; an upper feeding mechanical arm is arranged between the upper feeding mechanism and the leak detection mechanism, and between the leak detection mechanism and the retest mechanism; a material moving mechanical arm is arranged between the leak detection mechanism and the retest mechanism and the lug shaping and cutting mechanism; a first NG discharging position is arranged beside the material moving mechanical arm, and a second NG discharging position is arranged beside the discharging mechanical arm.

[0014] The utility model discloses a leak detection mechanism, lug shaping and cutting mechanism and size measuring mechanism are arranged on one equipment, can complete basic VOC leak detection, lug flattening and cutting, battery thickness and height measurement and other processes, and can ensure that the length of whole production is not too big. Meanwhile, through test cavity, the whole leak detection jig can be covered together with the product on the jig, and the leak detection operation of multiple products is completed at one time, and the efficiency is greatly improved. In addition, through the arrangement of retest mechanism, the same batch of products with leakage can be separately detected, and the defective products are removed, and the good products are left, and waste is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is plane layout schematic diagram of the utility model;

[0016] Figure 2 It is three-dimensional structure view of leak detection mechanism of the utility model;

[0017] Figure 3 It is side structure view of leak detection mechanism of the utility model;

[0018] Figure 4 It is the structure diagram of the utility model leak detection mechanism dismounts electric box.

[0019] In the drawing, 1 is workbench plate, 11 is upper feeding mechanism, 12 is discharging mechanism, 21 is upper feeding mechanical arm, 22 is material moving mechanical arm, 23 is discharging mechanical arm, 3 is leak detection mechanism, 30 is gantry, 31 is linear module, 32 is servo motor, 33 is slide, 34 is leak detection jig, 35 is test cavity, 36 is down pressure air cylinder, 37 is VOC leak detector, 38 is air pipe, 39 is vacuum angle valve, 310 is support frame, 311 is electric box, 4 is retest mechanism, 41 is retest slide, 5 is first NG discharging position, 6 is lug shaping and cutting mechanism, 7 is size measuring mechanism, 8 is discharging positioning mechanism, 9 is second NG discharging position. CONCRETE IMPLEMENTATION

[0020] In the embodiment, refer toFigures 1-4 The soft-buckle battery full-automatic leak detection and size measurement sorting line is provided with a feeding mechanism 11, a discharging mechanism 12, a leak detection mechanism 3, an electrode lug shaping and cutting mechanism 6 and a size measurement mechanism 7 on the workbench plate 1 of the equipment, the feeding mechanism 11 and the discharging mechanism 12 are respectively located at the two ends of the sorting line and respectively constitute a feeding station and a discharging station; the leak detection mechanism 3 comprises a VOC leak detector 37, a leak detection device and a leak detection jig 34, the product to be detected is placed on the leak detection jig 34, the leak detection device is connected with the VOC leak detector 37, the leak detection jig 34 has a plurality of product placing positions, such as 16; the leak detection device is a test cavity 35 with an open bottom, that is, a reversed-buckle groove-shaped structure, the size of the open bottom of the test cavity 35 is greater than the size of the leak detection jig 34, the test cavity 35 is connected with a driving device, the test cavity 35 is driven to press down by the driving device to seal and cover the leak detection jig 34 together with the product to be detected, so as to perform vacuumizing; the test cavity 35 is connected with a gas pipe 38, the gas pipe 38 is connected with a vacuumizing device (such as a vacuum pump) and a gas filling device (such as an air compressor).

[0021] The driving device adopts a downward pressing cylinder 36, the downward pressing cylinder 36 is installed on a gantry 30, and the test cavity 35 is connected with the bottom end of the cylinder rod of the downward pressing cylinder 36; the VOC leak detector 37 is also installed on the gantry 30, and the gantry 30 is installed on the workbench plate 1.

[0022] A vacuum angle valve 39 and an electromagnetic valve (not indicated) are installed on the gantry 30, and each gas pipe 38 realizes connection with the vacuumizing device and the gas filling device through the vacuum angle valve 39 and the electromagnetic valve respectively.

[0023] An electric box 311 is installed on the gantry 30, and the downward pressing cylinder 36, the VOC leak detector 37, the vacuum angle valve 39 and each electromagnetic valve are installed inside the electric box 311.

[0024] The leak detection jig 34 is installed on a sliding seat 33, the sliding seat 33 is installed on a linear module 31, the linear module 31 passes through below the test cavity 35 and is connected with a servo motor 32, the sliding seat 33 is driven to move along the linear module 31 by the servo motor 32, so as to move the product into the leak detection station and to the discharging station.

[0025] Each sliding seat 33 corresponds to a leak detection jig 34, a support frame 310 is arranged at a position opposite to the test cavity 35 on the two sides of the linear module 31, and the sliding seat 33 is supported by the support frame 310 when the test cavity 35 is pressed down, so as to stably support the sliding seat 33 and avoid damaging the linear module 31.

[0026] The leakage testing mechanism 3 comprises two sets of testing cavities 35 and two leakage testing jigs 34, one leakage testing jig 34 corresponds to one testing cavity 35, and the two testing cavities 35 are respectively connected to a VOC leakage testing instrument 37. The two sets of testing cavities 35 can simultaneously perform leakage testing operation, so as to improve the detection efficiency.

[0027] The workbench plate 1 is further provided with a retesting mechanism 4, which is arranged beside the leakage testing mechanism 3; the retesting mechanism 4 has basically the same structure as the leakage testing mechanism 3, and comprises a retesting sliding base 41, and a plurality of retesting jigs are arranged on the retesting sliding base 41, and the number of products loaded in each retesting jig is different, and the number is at least one. For comparison, there is only one leakage testing jig 34 on the sliding base 33 of the leakage testing mechanism 3.

[0028] Four retesting jigs are arranged on the retesting sliding base 41, and the number of products loaded in the four retesting jigs is respectively one, two, four and eight, so that the retesting can be performed on products with different numbers, thereby improving the pertinence of retesting and reducing the retesting on good products. Through the cooperation of the retesting mechanism 4 and the leakage testing mechanism 3, the accuracy of leakage testing can be improved to 100%, while the accuracy of the traditional leakage testing method can only reach about 90%.

[0029] The size measuring mechanism 7 adopts a constant force thickness gauge (which is an existing product), and a discharging positioning mechanism 8 is arranged behind the size measuring mechanism 7, which is used to place the good products after size measurement to facilitate discharging; an upper feeding manipulator 21 is arranged between the upper feeding mechanism 11 and the leakage testing mechanism 3, and between the leakage testing mechanism 3 and the retesting mechanism 4, a material moving manipulator 22 is arranged between the leakage testing mechanism 3 and the retesting mechanism 4 and the tab shaping and cutting mechanism 6, and a discharging manipulator 23 is arranged between the discharging positioning mechanism 8 and the discharging mechanism 12; a first NG discharging position 5 is arranged beside the material moving manipulator 22, which is used to sort out the products that fail in leakage testing; a second NG discharging position 9 is arranged beside the discharging manipulator 23, which is used to sort out the products that fail in size measurement.

[0030] Working principle: artificial loading or mechanical hand will be loaded with products tray into the loading mechanism 11, by the loading robot 21 will be taken out and placed in the leak detection fixture 34. Leak detection fixture 34 carrying products move under the test cavity 35, down pressure cylinder 36 to drive the test cavity 35 down to move together with the leak detection fixture 34 and its on the product to be tested cover. Vacuum pump through the vacuum valve 39 and air pipe 38 to the space of the product to be tested by vacuum, with the decline in pressure, the existence of leak point of the product damage will increase, leakage increases. Start VOC leak detector 37 detection for several seconds (such as 5 seconds), after the detection is completed by air compressor to the test cavity 35 into the air, atmospheric pressure after the test cavity 35. Slide 33 carrying leak detection fixture 34 to the discharge position, by the material removal robot 22 will be qualified into the tab shaping cutting mechanism 6 in the tab of the leveling and cutting, and then enter the size measurement mechanism 7 for battery thickness and height parameters measurement, finally sorting and unloading. If the leak detection process found that there are NG (unqualified) products, the batch of products will be transferred to the retest fixture of the retest mechanism 4, and then retest alone or small batch. The retest process is the same as the leak detection process, until the detection of qualified and unqualified products. Unqualified products through the first NG unloading position 5 unloading, qualified products will enter the tab shaping cutting mechanism 6, the subsequent processing process is the same as the leak detection process of qualified.

[0031] The utility model has been described in detail, the above, only for the preferred embodiment of the utility model, when can not limit the utility model implementation scope, namely all the equivalent changes and modification made according to the scope of this application, should still belong to the utility model covered range.

Claims

1. A fully automatic leak testing and size measurement sorting line for soft button batteries, comprising a feeding mechanism, a discharging mechanism, a leak testing mechanism, a tab shaping and cutting mechanism, and a size measurement mechanism on the worktable of the equipment, wherein the feeding mechanism and the discharging mechanism are located at the beginning and end of the sorting line, respectively; the leak testing mechanism includes a VOC leak detector, a leak testing device, and a leak testing fixture, wherein the product to be tested is placed on the leak testing fixture, the leak testing device is connected to the VOC leak detector, and the leak testing fixture has multiple product placement positions, characterized in that: The leak detection device is a test chamber with an open bottom. The size of the bottom opening of the test chamber is larger than the size of the leak detection fixture. The test chamber is connected to a driving device, which drives the test chamber to press down and seal the leak detection fixture together with the product to be tested. The test chamber is connected to an air tube, which is connected to a vacuum pump and an air filling device.

2. The fully automatic leak detection and size measurement sorting line for soft button batteries according to claim 1, characterized in that: The driving device uses a downward pressure cylinder, which is mounted on a gantry frame. The test chamber is connected to the bottom end of the cylinder rod of the downward pressure cylinder. The VOC leak detector is also mounted on the gantry frame, which is mounted on the workbench.

3. The fully automatic leak detection and size measurement sorting line for soft button batteries according to claim 2, characterized in that: Vacuum angle valves and solenoid valves are installed on the gantry frame, and each air pipe is connected to the vacuum pumping device and the air filling device through the vacuum angle valves and solenoid valves respectively.

4. The fully automatic leak detection and size measurement sorting line for soft button batteries according to claim 3, characterized in that: An electrical box is installed on the gantry frame, which houses the pressure cylinder, VOC leak detector, vacuum valve, and various solenoid valves.

5. The fully automatic leak detection and size measurement sorting line for soft button batteries according to claim 1, characterized in that: The leak testing fixture is mounted on a slide, which is mounted on a linear module. The linear module passes under the test chamber and is connected to a servo motor. The servo motor drives the slide to move along the linear module.

6. The fully automatic leak detection and size measurement sorting line for soft button batteries according to claim 5, characterized in that: Each slide corresponds to a leak testing fixture. Support frames are set on both sides of the linear module opposite to the test cavity. When the test cavity is pressed down, the slide is supported by the support frames.

7. The fully automatic leak detection and size measurement sorting line for soft button batteries according to any one of claims 1-6, characterized in that: The leak detection mechanism includes two sets of test chambers and two leak detection fixtures. Each leak detection fixture corresponds to one test chamber, and each of the two test chambers is connected to a VOC leak detector.

8. The fully automatic leak detection and size measurement sorting line for soft button batteries according to claim 7, characterized in that: A retesting mechanism is also provided on the workbench, which is located next to the leak detection mechanism. The retesting mechanism has the same structure as the leak detection mechanism, including a retesting slide, and multiple retesting fixtures are provided on the retesting slide. The number of materials loaded in each retesting fixture is different, with a minimum of one.

9. The fully automatic leak detection and size measurement sorting line for soft button batteries according to claim 7, characterized in that: Four retesting fixtures are set on the retesting slide, with the number of materials loaded being one, two, four, and eight respectively.

10. The fully automatic leak detection and size measurement sorting line for soft button batteries according to claim 9, characterized in that: The dimension measuring mechanism adopts a constant force thickness gauge, and a material unloading and positioning mechanism is set behind the dimension measuring mechanism; a material loading robot is set between the material loading mechanism and the leak detection mechanism and between the leak detection mechanism and the re-measurement mechanism; a material transfer robot is set between the leak detection mechanism and the re-measurement mechanism and the tab shaping and cutting mechanism; a material unloading robot is set between the material unloading and positioning mechanism and the material unloading mechanism; a first NG unloading position is set next to the material transfer robot, and a second NG unloading position is set next to the material unloading robot.

Images