A coin cell battery detection packaging production line and method thereof

Abstract

The application discloses a kind of button cell detection packaging production line and method thereof, including rack and installation to rack, feeding device, transfer conveying device, detection device, finished product discharge conveying line, push material receiving module, pick-and-place variable-distance device and tray stacking device, transfer conveying device is butt-jointed to be provided in feeding device discharge position, detection device is butt-jointed to be provided in transfer conveying device output end, and detection device is provided with two finished product discharge stations, and finished product discharge conveying line is installed at finished product discharge station, and finished product discharge conveying line conveying end is provided with push material receiving module, and pick-and-place variable-distance device is butt-jointed to be provided in push material receiving module upper side, and tray stacking device is butt-jointed to be provided in pick-and-place variable-distance device 7 side end. Through the above mode, the application integrates feeding, transfer, cleaning, detection, rejection, discharging, variable-distance tray arrangement, tray stacking in one, with high degree of automation, significantly improves the overall production efficiency of button cell detection packaging.

Description

Technical Field

[0001] This invention relates to the field of testing and packaging technology, and in particular to a button battery testing and packaging production line and method. Background Technology

[0002] Button batteries, with their advantages of small size, high energy density, and strong adaptability, are widely used in various small electronic products such as smart wearable devices, precision medical instruments, miniature electronic toys, and smart home accessories. The appearance defects of finished button batteries directly affect the product yield and safety of use. Therefore, all-round appearance inspection and precise sorting and packaging operations must be completed before the finished products leave the factory.

[0003] Currently, in the domestic button battery production and processing, most testing and packaging equipment still adopts a segmented operation mode, with low equipment integration and poor process connection. Traditional production lines have many inherent defects: low material feeding efficiency, slow feeding by ordinary robotic arms, and the market also uses vibratory feeders, which makes it difficult to avoid product collisions, scratches and damage to the product surface, and difficulty in unifying the front and back; existing testing equipment has a single detection dimension and limited detection accuracy, mostly only performing simple visual inspection on the single surface of the positive and negative electrodes of the battery; the existing equipment has poor connection between unloading, tray placement and palletizing processes, and good products are stacked disorderly after unloading, lacking precise material straightening and pitch adjustment structures, and the efficiency of robotic arms in sequential handling is low, making it difficult to meet the needs of high-speed mass production; and it cannot adaptively adjust the battery placement spacing according to the matrix spacing of the packaging pallets.

[0004] Based on the above defects and shortcomings, it is necessary to improve the existing technology and design a button battery testing and packaging production line and its method. Summary of the Invention

[0005] The main technical problem solved by this invention is to provide a button battery testing and packaging production line and method, which integrates feeding, transfer, cleaning, testing, waste removal, unloading, variable spacing tray placement, and palletizing into one system. It has a high degree of automation and significantly improves the overall mass production efficiency of button battery testing and packaging.

[0006] To solve the above-mentioned technical problems, one technical solution adopted by the present invention is: to provide a button battery testing and packaging production line, comprising: frame; A feeding device, mounted on the frame, is used to provide the product to be tested; A transfer and conveying device is located at the unloading position of the feeding device and is used for transferring and conveying products. The inspection device includes an indexing turntable and a rotating disk driven by the indexing turntable. Along the periphery of the turntable are sequentially arranged a cleaning station, a loading station, an inspection station, a defective product unloading station, and a two-finished product unloading station. The cleaning station is equipped with a cleaning device; the loading station is equipped with a material handling mechanism that connects to the output end of the transfer and conveying device; the inspection station is equipped with a camera for multi-dimensional appearance inspection of the products; and the defective product unloading station is equipped with an unloading mechanism. Two finished product unloading conveyor lines are set at the finished product unloading station; The material pushing and receiving module includes a material pushing mechanism on one side of the end of the finished product unloading conveyor line and a material receiving and pitch changing mechanism that docks with the material pushing mechanism to receive the product and perform a single pitch change in the X direction. The pick-and-place variable-pitch device includes a variable-pitch suction cup located above the receiving variable-pitch mechanism for adsorbing the product and changing its pitch in the Y direction. A palletizing device is connected to the pick-and-place variable distance device and is used for palletizing and packaging products.

[0007] Preferably, the pushing mechanism includes a pushing cylinder, a pushing plate mounted on the sliding table of the pushing cylinder, a material-forming plate quickly mounted on the pushing plate, a limiting plate located outside the material-forming plate and driven to rotate and open by the pushing cylinder, and a baffle plate located at the end of the finished product unloading conveyor line. The material-forming plate is located above the feeding conveyor line of the finished product unloading conveyor line and has a material-forming groove at its bottom. The material-forming groove and the limiting plate on its outer side form a material-forming track for arranging the conveyed products into a row. The baffle plate is located on the feeding conveyor line behind the material-forming plate and the limiting plate.

[0008] Preferably, the limiting plate is mounted on the push plate via a rotating assembly; the rotating assembly includes two fixed seats mounted on the push plate, a movable seat rotatably mounted on the fixed seats, a U-shaped frame fixed to the two movable seats, a cam bearing follower mounted to the end of the legs of the U-shaped frame, and a trajectory limiting plate connected to the fixed end of the push cylinder via a connecting plate. The middle part of the legs of the U-shaped frame is fixedly connected to the movable seat, the limiting plate is vertically fixed to the head of the U-shaped frame, the trajectory limiting plate is vertically arranged, and the trajectory limiting plate is provided with an elongated waist-shaped limiting groove that is obliquely downward along the extension direction of the slide of the push cylinder. The rotating part of the cam bearing follower is located in the elongated waist-shaped limiting groove.

[0009] Preferably, the material receiving and pitch changing mechanism includes a material receiving bracket, two baffles installed at the bottom of the material receiving bracket, a guide post inserted between the two baffles, a plurality of guide blocks mounted on the guide post, a pitch changing connection assembly connecting two adjacent guide blocks, a pitch changing cylinder installed on the baffles and which drives the multiple sets of guide blocks to change pitch and unfold through the retraction of the piston rod, and a plurality of material receiving plates installed on the guide blocks for receiving the products pushed out by the pushing mechanism. The piston rod of the pitch changing cylinder is fixedly connected to the outer guide block.

[0010] Preferably, the variable pitch connection assembly includes a variable pitch connection plate and a limiting pin. The tail of the variable pitch connection plate is fixed on the guide block. The head of the variable pitch connection plate has an outwardly protruding connecting part. The tail of the variable pitch connection plate has an avoidance opening that cooperates with the connecting part. A long through hole is opened in the middle of the connecting part. A limiting pin is installed on the guide block adjacent to the variable pitch connection plate. The limiting pin passes through the long through hole, and the length of the long through hole is the variable pitch distance.

[0011] Preferably, the feeding device includes a pallet conveyor line, a pallet stacking machine installed at the input end of the pallet conveyor line for providing products to be tested, a pallet stacking machine installed at the output end of the pallet conveyor line for stacking empty pallets, lifting and positioning components equidistantly arranged along the output direction of the pallet conveyor line for lifting and blocking pallets, a feeding and flipping module located on the side of one of the lifting and positioning components for uniformly adsorbing products in the pallet and flipping them to the negative pole facing upwards, and a handling and feeding module located on the side of the feeding and flipping module for adsorbing and flipping products; the feeding and flipping module includes a vertical plate, a lifting cylinder installed on the vertical plate, a turntable cylinder driven by the lifting cylinder for lifting and lowering, an adsorption plate driven by the turntable cylinder for flipping, and suction cups arrayed on the adsorption plate and corresponding one-to-one with the products in the pallet, the piston rod of the lifting cylinder passes through the cylinder mounting plate, and the extended end of the piston rod is fitted with a spring that abuts against the cylinder mounting plate, and the turntable cylinder is mounted on the cylinder mounting plate.

[0012] Preferably, the transfer and conveying device includes a first belt conveyor line located at the material unloading position of the feeding device, a flow channel reversing module laterally connected to the output end of the first belt conveyor line, a second belt conveyor line connected to the material outlet below the flow channel reversing module, and a guide plate installed above the belt at the output end of the second belt conveyor line. The lower end of the guide plate is provided with a guide chute for connecting the belt and the turntable.

[0013] Preferably, the inspection station includes a first to a ninth inspection station arranged sequentially along the turntable. The first inspection station is equipped with two upward-tilting cameras pointing from above the product side; the second, third, and fourth inspection stations are equipped with upward-viewing cameras pointing from the front of the product; the fifth inspection station is equipped with three sets of equally spaced cameras arranged at 120° angles along the circumference; the sixth inspection station is equipped with a side camera pointing from the product side; the seventh inspection station is equipped with a downward-viewing camera located below the turntable and pointing towards the positive pole of the product's bottom surface; the eighth inspection station is equipped with a downward-tilting camera pointing from below the product side; and the ninth inspection station is equipped with inspection cameras located above and below the product. Each camera at the inspection station is mounted on an adjustment bracket capable of fine-tuning its angle, and the inspection station is also equipped with a light source and a light shield that cooperate with each inspection camera.

[0014] Preferably, the pick-and-place pitch-changing device further includes a pick-and-place bracket, a Y-axis linear module mounted on the pick-and-place bracket, a Z-axis cylinder driven by the Y-axis linear module to move horizontally, a lifting frame driven by the Z-axis cylinder to move vertically, two baffles mounted on the bottom surface of the lifting frame, pitch-changing guide columns inserted into the two baffles, several pitch-changing guide blocks fitted on the pitch-changing guide columns, a pitch-changing assembly connecting two adjacent pitch-changing guide blocks, a second pitch-changing cylinder mounted on the lifting frame and driving several pitch-changing guide blocks to change pitch in the Y direction, and a pitch-changing connecting frame mounted on the pitch-changing guide blocks. Several pitch-changing suction cups are equidistantly mounted on the pitch-changing connecting frame, and the structure of the pitch-changing assembly is the same as the structure of the pitch-changing connecting assembly.

[0015] A method for testing and packaging button batteries, using a button battery testing and packaging production line, includes the following steps: S1. Battery attitude flipping feeding: The pallet feeding machine supplies pallets loaded with products to be tested to the pallet conveyor line in sequence. The lifting and positioning component lifts up and blocks the pallet conveyor line from transporting the pallets. The feeding flipping module absorbs the products and flips them uniformly so that the negative electrode faces upward. The handling and feeding module transports and outputs the single row of products to the transfer conveyor. Empty pallets continue to be transported along the pallet conveyor line and are stacked and stored by the pallet stacking machine. S2. Transfer and conveying process: The transfer and conveying device transports the products, which are guided by the guide chute of the guide plate and sent to the loading station of the testing device; S3, Turntable loading and sorting process: The indexing turntable drives the transparent turntable to rotate intermittently in indexing order; when the product arrives at the loading station, the arc track of the sorting mechanism corrects the product's posture, and the through-beam fiber detects the incoming material arrival signal. S4. Multi-station visual comprehensive inspection: A turntable carrying a button battery passes through each inspection station sequentially. Multiple cameras, in conjunction with light sources and light shields, complete multi-dimensional appearance inspection. The system summarizes the inspection results from all stations and marks good and defective products, including the following steps: S4.1 First inspection station: The tilting camera inspects the negative electrode surface of the product for pits, scratches, and dirt; S4.2, Second Inspection Station: The upward-facing camera inspects the edge of the negative electrode of the product for dirt. S4.3, Third Inspection Station: The upward-facing camera inspects the product's rounded corners for black spots and dents; S4.4, Fourth Inspection Station: The upward-facing camera inspects the negative electrode trench for defects such as green mold and white fuzz. S4.5, Fifth Inspection Station: Three sets of 120° circumferentially divided tilting cameras inspect the outer wall of the product for dirt and scratches; S4.6, Sixth Inspection Station: Side-view camera inspects product height dimensions; S4.7, Seventh Inspection Station: The downward-looking camera below the turntable inspects the positive electrode of the product for dirt and scratches through the transparent turntable; S4.8, Eighth Inspection Station: The tilting camera inspects the printing quality of the positive electrode logo on the product; S4.9, Ninth Inspection Station: The upper and lower cameras are combined to inspect the positive electrode surface of the product for pits, scratches, and dirt; S5. Defective product rejection: The turntable rotates to the defective product unloading station, and the air blowing pipe of the unloading mechanism blows air onto the products marked as defective, blowing the defective products off and sliding them into the defective product box. S6. Finished Product Unloading Conveying: The turntable rotates to the finished product unloading station, and the finished product unloading conveyor line blows the good button batteries down to the feeding conveyor line and conveys them backward; S7. Turntable Surface Cleaning: As the turntable rotates past the cleaning station, the cleaning motor drives the brush to rotate, cleaning the surface of the turntable's loading area, removing dirt from the turntable surface and avoiding interference with subsequent visual inspection. S8. Pushing and straightening of materials and single-stage pitch change in the X direction: The products are conveyed along the feeding conveyor line to the straightening track and arranged into a row. The baffle plate blocks the incoming material, and the pushing mechanism works: the pushing cylinder extends, and the cam bearing follower moves along the long waist-shaped limit groove of the track limit plate, driving the limit plate to rotate and lift; the push plate pushes the single row of products as a whole to the receiving pitch change mechanism until the receiving pitch change mechanism is full of products; the pitch change cylinder of the receiving pitch change mechanism retracts, and pulls each group of guide blocks step by step through the pitch change connection component, driving the receiving plate to complete the single-stage pitch change in the X direction and adjust the spacing between the single row of products. S9, Y-axis secondary pitch change pick-up and place: The pick-up and place pitch change device picks up the entire row of products after the X-axis primary pitch change. The second pitch change cylinder of the pick-up and place pitch change device drives the pitch change component to move, completing the secondary pitch change in the Y-axis. After the XY two-dimensional pitch change, the product row and column spacing is completely matched with the placement matrix spacing of the packaging pallet. S10, Finished Product Palletizing: The pick-and-place variable distance device places the product after two-dimensional variable distance into an empty pallet at the palletizing device, and stacks the loaded finished product pallets.

[0016] Compared with the prior art, the beneficial effects of the present invention are: The tray-based feeding system, combined with a negative pressure adsorption and flipping feeding structure, can uniformly adjust the button batteries to the standard detection posture with the negative terminal facing up. The entire tray is adsorbed, and the material is discharged in a single row, resulting in a fast feeding cycle. The nine-station all-round visual inspection system, with multi-angle cameras, dedicated light sources and light shields, can cover the full-dimensional inspection of the positive and negative electrode surfaces, edges, R-corners, grooves, outer walls, dimensions and height of button batteries, as well as the positive electrode logo. It has high inspection accuracy and is equipped with a turntable cleaning mechanism to remove dirt from the turntable surface in real time, avoiding interference with the inspection imaging and effectively improving the inspection accuracy and stability. The pushing mechanism is ingeniously designed. The adjustable material track formed by the material plate and the openable and closable limiting plate can automatically organize the messy button batteries on the conveyor line into a standard single row. The opening and closing of the limiting plate and the pushing action of the material plate are both completed by a single power source. The structure is compact, the action linkage is strong, and the cost is reduced. The receiving pitch mechanism and the pick-and-place pitch device perform pitch changes in the X and Y directions respectively, which can automatically align and organize the good products after conveying. The two orthogonal pitch changes can adaptively adjust the battery placement position according to the spacing of the tray matrix, and fill the tray in one go, resulting in high tray loading efficiency. Attached Figure Description

[0017] Figure 1 This is a top view of a button battery testing and packaging production line.

[0018] Figure 2 This is a schematic diagram of the feeding device structure of a button battery testing and packaging production line.

[0019] Figure 3 This is a schematic diagram of the feeding and flipping module structure of a button battery testing and packaging production line.

[0020] Figure 4 This is a schematic diagram of the testing device structure of a button battery testing and packaging production line.

[0021] Figure 5 This is a partial structural diagram of a testing device in a button battery testing and packaging production line.

[0022] Figure 6 This is a schematic diagram of the material feeding and receiving module structure of a button battery testing and packaging production line.

[0023] Figure 7 This is a partial structural diagram of the feeding mechanism in a button battery testing and packaging production line.

[0024] Figure 8 This is a partial structural diagram of the receiving pitch-changing mechanism in a button battery testing and packaging production line.

[0025] Figure 9 This is a schematic diagram of a pick-and-place variable distance device in a button battery testing and packaging production line.

[0026] Figure 10 This is a partial structural diagram of a pick-and-place variable distance device in a button battery testing and packaging production line.

[0027] Figure 11 This is a schematic diagram of the palletizing device in a button battery testing and packaging production line.

[0028] Among them, 1. rack; 2. Feeding device; 21. Pallet conveyor line; 22. Pallet stacker; 23. Pallet palletizer; 24. Lifting and positioning assembly; 25. Feeding and turning module; 251. Vertical plate; 252. Lifting cylinder; 253. Turntable cylinder; 254. Adsorption plate; 255. Suction cup; 256. Spring; 26. Handling and loading module; 261. Gantry frame; 262. X-axis linear module; 263. Z-axis linear module; 264. Transfer frame; 265. Lifting cylinder; 266. Adsorption frame; 267. Loading suction cup; 3. Transfer and conveying device; 31. First belt conveyor line; 32. Flow channel reversing module; 33. Second belt conveyor line; 34. Guide plate; 340. Guide chute. 4. Detection device; 41. Indexing turntable; 42. Turntable; 43. Material handling mechanism; 431. Material handling bracket; 432. Material handling assembly; 4321. Adjustment plate; 4322. First material handling plate; 4323. Second material handling plate; 433. Optical fiber; 44. Unloading mechanism; 441. Air blowing pipe; 442. Material receiving chute; 45. Cleaning device; 451. Cleaning motor; 452. Brush; 401. First detection station; 402. Second detection station; 403. Third detection station; 404. Fourth detection station; 405. Fifth detection station; 406. Sixth detection station; 407. Seventh detection station; 408. Eighth detection station; 409. Ninth detection station; 5. Finished product unloading conveyor line; 51. Unloading chute; 52. Unloading air blowing pipe; 53. Feeding conveyor line; 6. Material pushing and receiving module; 61. Material pushing mechanism; 611. Material pushing bracket; 612. Material pushing cylinder; 613. Push plate; 614. Material set plate; 615. Limiting plate; 616. Baffle plate; 617. Rotating assembly; 6171. Fixed seat; 6172. Movable seat; 6173. U-shaped frame; 6174. Cam bearing follower; 6175. Track limiting plate; 6170. Long waist-shaped limiting groove; 62. Material receiving pitch changing mechanism; 621. Material receiving bracket; 622. Baffle plate; 623. Guide column; 624. Guide block; 625. Pitch changing connection assembly; 6251. Pitch changing connection plate; 6252. Limiting pin; 6253. Connecting part; 6254. Clearance opening; 6255. Long through hole; 626. Pitch changing cylinder; 627. Material receiving plate; 7. Pick-up and placement pitch changer; 71. Pick-up and placement bracket; 72. Y-axis linear module; 73. Z-axis cylinder; 74. Lifting frame; 75. Pitch changer baffle; 76. Pitch changer guide column; 77. Pitch changer guide block; 78. Pitch changer assembly; 79. Second pitch changer cylinder; 710. Pitch changer connecting frame; 711. Pitch changer suction cup. 8. Palletizing and stacking device; 81. Pallet conveyor belt; 82. Pallet lifting and feeding module; 83. Pallet handling robot; 84. Lifting and positioning unit; 85. Pallet stacking module. Detailed Implementation

[0029] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.

[0030] Please see Figures 1 to 11 The embodiments of the present invention include: A button battery testing and packaging production line includes a frame 1, a feeding device 2, a transfer conveying device 3, a testing device 4, a finished product unloading conveyor line 5, a pushing and receiving module 6, a pick-and-place variable distance device 7, and a palletizing and stacking device 8.

[0031] The frame 1 is equipped with a feeding device 2. The feeding device 2 is connected to a transfer conveyor 3 at its unloading position. The output end of the transfer conveyor 3 is connected to a detection device 4. The detection device 4 is equipped with two finished product unloading stations. A finished product unloading conveyor line 5 is installed at the finished product unloading station. A pushing and receiving module 6 is installed at the end of the finished product unloading conveyor line 5. A pick-up and drop-off variable distance device 7 is connected above the pushing and drop-off variable distance device 6. A palletizing and stacking device 8 is connected to the side of the pick-up and drop-off variable distance device 7.

[0032] The feeding device 2 includes a pallet conveyor line 21, a pallet feeding and stacking machine 22, a pallet pallet stacking machine 23, a lifting and positioning component 24, a feeding and flipping module 25, and a handling and loading module 26. The input end of the pallet conveyor line 21 is equipped with a pallet feeding and stacking machine 22 for providing products to be inspected, and the output end of the pallet conveyor line 21 is equipped with a pallet stacking machine 23 for stacking empty pallets. The pallet feeding and stacking machine 22 sequentially places pallets containing products to be inspected onto the pallet conveyor line 21. The pallet conveyor line 21 is equidistantly equipped with lifting and positioning components 24 along the conveying direction to lift and block pallet transport. Positioning components 24 employ SMC needle-type cylinders. One lifting positioning component 24 has a side-mounted feeding flipping module 25 that uniformly adsorbs and flips the positive-terminated button batteries in the tray to the negative-terminated position. The side-mounted feeding flipping module 25 has a side-mounted transport and loading module 26 for adsorbing and transporting the flipped products to the transfer conveyor 3. Other lifting positioning components 24 are reserved for electrical testing stations, electrical testing NG rejection stations, laser marking stations, etc., configured according to actual usage requirements. The feeding flipping module 25 includes a vertical plate 251, a lifting cylinder 252 mounted on the vertical plate 251, and a lifting cylinder 252. 2. A turntable cylinder 253 drives lifting and lowering motion; an adsorption plate 254 driven by the turntable cylinder 253 to rotate; and suction cups 255 arrayed on the adsorption plate 254. Each suction cup 255 is opposite to a product in the tray and communicates with the adsorption cavity inside the adsorption plate 254. The adsorption cavity inside the adsorption plate 254 is connected to a negative pressure device. The piston rod of the lifting cylinder 252 passes through the cylinder mounting plate, and the extended end of the piston rod is fitted with a spring 256 that abuts against the cylinder mounting plate. The turntable cylinder 253 is mounted on the cylinder mounting plate. The conveying and loading module 26 includes a gantry frame 261 and is mounted on the gantry frame 261. The system includes an X-axis linear module 262, a Z-axis linear module 263 driven by the X-axis linear module 262 to move horizontally, a transfer frame 264 driven by the Z-axis linear module 263 to move vertically, a lifting cylinder 265 mounted on the transfer frame 264, several rows of adsorption racks 266 driven by the lifting cylinder 265 to move vertically, and several feeding suction cups 267 mounted on the adsorption racks 266. The number of rows of adsorption racks 266 is the same as the number of rows on the tray, and the number of feeding suction cups 267 in each row is the same as the number of products on the tray. The air passages of the feeding suction cups 267 in the same row of adsorption racks 266 are connected, and the adsorption and vacuum breaking are uniformly controlled.

[0033] The transfer and conveying device 3 includes a first belt conveyor 31, a flow channel reversing module 32, a second belt conveyor 33, and a guide plate 34. The input end of the first belt conveyor 31 is located at the unloading position of the handling and loading module 26. The handling and loading module 26 sequentially transports a line of products onto the first belt conveyor 31. The output end of the first belt conveyor 31 is laterally connected to the flow channel reversing module 32. The discharge port below the flow channel reversing module 32 is connected to the second belt conveyor 33. The output end of the second belt conveyor 33 is close to the inspection... The turntable of the measuring device 4 has a guide plate 34 above the output belt of the second belt conveyor 33 to transport products to the turntable. The lower end of the guide plate 34 has a guide groove 340 that connects the belt and the turntable 42. The output end of the first belt conveyor 31 has an outlet pointing to the inlet of the flow channel reversing module 32. The flow channel reversing module 32 has an inclined guide groove. The upper part of the guide groove is the inlet, which connects to the outlet of the first belt conveyor 31. The lower part of the guide groove is the outlet, which points to the second belt conveyor 33.

[0034] The detection device 4 includes an indexing turntable 41 and a turntable 42 driven to rotate by the indexing turntable 41. A cleaning station, a loading station, an inspection station, a defective product unloading station, and a two-finished product unloading station are sequentially arranged around the turntable 42. The turntable 42 is made of transparent material. A cleaning device 45 is installed at the cleaning station. The cleaning device 45 includes a cleaning motor 451 mounted on a bracket and a brush 452 driven to rotate by the cleaning motor 451. The brush 452 is located above and in contact with the turntable 42. During rotation, the brush 452 can clean dirt from the surface of the turntable 42. The cleaning area of ​​the brush 452 is aligned with the subsequent product loading area. The loading station is connected to the transfer and conveying device 3. A material handling mechanism 43 is also provided; the material handling mechanism 43 includes a material handling bracket 431, a material handling assembly 432 mounted on the material handling bracket 431, and a through-beam optical fiber 433 mounted on the material handling bracket 431 via the bracket. The material handling assembly 432 includes an adjusting plate 4321, a first material handling plate 4322 and a second material handling plate 4323 mounted on the lower end of the adjusting plate 4321. The first material handling plate 4322 and the second material handling plate 4323 are located above the turntable 42 and an arc-shaped track is provided between them. The products output by the guide plate 34 enter the arc-shaped track, and the feeding posture of the products on the turntable 42 is adjusted to facilitate subsequent unified inspection. The adjusting plate 4321 is provided with a waist-shaped hole for adjusting the installation position of the second material handling plate 4323. The distance between the first feeding plate 4322 and the second feeding plate 4323 is adjustable, meaning the width of the arc-shaped track is adjustable to match products of different sizes. The through-beam optical fiber 433 is located behind the material exit of the arc-shaped track, allowing for timely detection of incoming products. The detection stations include: a first detection station 401 for detecting pits, scratches, and dirt on the negative electrode surface of the product; a second detection station 402 for detecting dirt on the edge of the negative electrode; a third detection station 403 for detecting black spots and pits on the R-corner of the product; a fourth detection station 404 for detecting green mold and white fuzz in the negative electrode groove of the product; a fifth detection station 405 for detecting dirt and scratches on the outer wall of the product; a sixth detection station 406 for detecting the height of the product; and a seventh detection station 407 for detecting dirt and scratches on the positive electrode of the product. 07. An eighth inspection station 408 for detecting the logo on the positive electrode of the product and a ninth inspection station 409 for detecting pits, scratches, and dirt on the positive electrode surface of the product; the first inspection station 401 is equipped with two upward tilting cameras pointing from the top of the product side; the second, third, and fourth inspection stations are equipped with upward-viewing cameras pointing from the front of the product; the fifth inspection station 405 is equipped with three sets of equally spaced cameras evenly distributed at 120° along the circumference; the sixth inspection station 406 is equipped with a side camera pointing from the side of the product; the seventh inspection station 407 is equipped with a downward-viewing camera located below the turntable and pointing to the bottom positive electrode of the product; and the eighth inspection station 408 is equipped with a downward tilting camera pointing from the bottom of the product side.The ninth inspection station, 409, is equipped with inspection cameras positioned above and below the product. Each camera at the inspection station is mounted on an adjustable bracket capable of fine-tuning its angle. The inspection station also includes a light source and a light shield to work with each camera.

[0035] A feeding mechanism 44 is provided at the defective product unloading station. The feeding mechanism 44 includes an air blowing pipe 441 located above the turntable and a receiving chute 442 connected to the turntable 42. The air blowing pipe 441 is fixed to the outer end of the receiving chute 442 by a bracket. The air blowing pipe 441 blows the defective products detected on the turntable 42 onto the receiving chute 442. The defective product box is connected to the discharge port below the receiving chute 442.

[0036] The finished product unloading conveyor line 5 includes an unloading chute 51 that is connected to the turntable 42, an unloading air pipe 52 that blows the products on the turntable 42 to the inlet of the unloading chute 51, and a feeding conveyor line 53 that is connected to the outlet of the unloading chute 51.

[0037] The material pushing and receiving module 6 includes a pushing mechanism 61 and a receiving pitch changing mechanism 62 located on both sides of the output end of the finished product unloading conveyor line 5. The pushing mechanism 61 pushes a row of products on the finished product unloading conveyor line 5 to the receiving pitch changing mechanism 62. The pushing mechanism 61 includes a pushing bracket 611, a pushing cylinder 612, a pushing plate 613, a material setter 614, a limiting plate 615, a baffle plate 616, and a rotating assembly 617. The pushing bracket 611 is equipped with a pushing cylinder 612. The pushing plate 613 is on the slide of the pushing cylinder 612. The front end of the pushing plate 613 is quickly fitted with a material setter 614. Plate 614 is located above the feeding conveyor line 53 and has a material-forming groove at its bottom. A limiting plate 615, driven by the pushing cylinder 612, is located on the outer side of the material-forming plate 614. The material-forming groove and the limiting plate 615 form a material-forming track, which is slightly wider than the product width. Disordered products are conveyed along the feeding conveyor line 53 to the material-forming track and then arranged into a single line. A baffle plate 616 is installed on the feeding conveyor line 53 behind the material-forming plate 614 and the limiting plate 615. The limiting plate 615 is mounted on the pushing plate 613 via a rotating assembly 617, which includes a fixed base 61. 71. Movable seat 6172, U-shaped frame 6173, cam bearing follower 6174, and trajectory limit plate 6175. Two fixed seats 6171 are installed on push plate 613. Movable seat 6172 is rotatably installed on fixed seats 6171. The middle of the legs of U-shaped frame 6173 is installed on the two fixed seats 6171. Limit plate 615 is vertically fixed to the head of U-shaped frame 6173. Cam bearing follower 6174 is installed at the tail of the legs of U-shaped frame 6173. Trajectory limit plate 6175 is fixedly connected to the fixed end of push cylinder 612 through connecting plate. Trajectory limit plate 6175 is vertically set. The position plate 6175 is provided with an elongated waist-shaped limiting groove 6170 that is obliquely downward along the extension direction of the slide of the pusher cylinder 612. The rotating part of the cam bearing follower 6174 is located in the elongated waist-shaped limiting groove 6170. When the slide of the pusher cylinder 612 extends, it drives the push plate 613 to move. The trajectory limiting plate 6175 is fixed. The cam bearing follower 6174 moves along the trajectory of the elongated waist-shaped limiting groove 6170, which drives the legs of the U-shaped frame 6173 to rotate downward along the fixed seat 6171 as the rotation point. The head of the U-shaped frame 6173 rotates and lifts. The push plate 613 continues to move and pushes a row of products to the receiving pitch mechanism 62.

[0038] The material receiving and pitch-changing mechanism 62 includes a material receiving bracket 621, a baffle 622, guide posts 623, guide blocks 624, a pitch-changing connecting assembly 625, a pitch-changing cylinder 626, and a material receiving plate 627. Two baffles 622 are mounted on the top of the material receiving bracket 621, and at least two guide posts 623 are fixed between the two baffles 622. Several guide blocks 624 are fitted onto the guide posts 623, and each guide block 624 has a groove in its center. Adjacent guide blocks 624 are connected by the pitch-changing connecting assembly 625. A pitch-changing cylinder 626 is installed on one of the baffles 622. The piston rod of the pitch-changing cylinder 626 is fixedly connected to the outer guide block 624. When the piston rod of the pitch-changing cylinder 626 retracts, it drives multiple sets of guide blocks 624 to expand and contract. A receiving plate 627 for receiving products is installed on the guide block 624. The receiving plate 627 has a material-blocking part protruding upward at its tail end, and the outer edges of the two outer receiving plates 627 have material-blocking parts protruding upward. The pitch-changing connecting assembly 625 includes a pitch-changing connecting plate 6251 and a limiting part. A pin 6252 is used. The tail of the variable pitch connecting plate 6251 is fixed to the guide block 624. The head of the variable pitch connecting plate 6251 has an outwardly protruding connecting part 6253. The tail of the variable pitch connecting plate 6251 has a clearance opening 6254 that mates with the connecting part 6253. A long through hole 6255 is opened in the middle of the connecting part 6253. A limiting pin 6252 is installed on the guide block 624 adjacent to the variable pitch connecting plate 6251. The limiting pin 6252 passes through the long through hole 6255. 55. The length of the elongated through hole 6255 is the pitch spacing. The piston rod of the pitch cylinder 626 retracts, causing the outer guide block 624 to move. After the outer guide block 624 moves a distance of one pitch spacing, the limiting pin 6252 abuts against one side of the elongated through hole 6255. The piston rod continues to retract, pulling the adjacent guide block 624 to move through the limiting pin 6252, continuing to move a distance of one pitch spacing, and so on, until the limiting pin of the last set of pitch connecting components 625 jams the pitch connecting plate.

[0039] The pick-and-place pitch-changing device 7 includes a pick-and-place bracket 71, a Y-axis linear module 72, a Z-axis cylinder 73, a lifting frame 74, pitch-changing baffles 75, pitch-changing guide columns 76, pitch-changing guide blocks 77, pitch-changing components 78, a second pitch-changing cylinder 79, a pitch-changing connecting frame 710, and a pitch-changing suction cup 711. The Y-axis linear module 72 is mounted on the pick-and-place bracket 71. The Y-axis linear module 72 drives the Z-axis cylinder 73 to move horizontally, and the Z-axis cylinder 73 drives the lifting frame 74 to move vertically. Two pitch-changing baffles 75 are mounted on the bottom surface of the lifting frame 74. A pitch-changing guide column 76 is inserted between the two pitch-changing baffles 75. Several pitch-changing guide blocks 77 are fitted onto the pitch-changing guide column 76. Adjacent pitch-changing guide blocks 77 are connected by the pitch-changing components 78. The structure of the pitch-changing assembly 78 is the same as that of the pitch-changing connection assembly 625. A second pitch-changing cylinder 79 is also installed on the lifting frame 74. The piston rod of the second pitch-changing cylinder 79 is fixedly connected to the outer pitch-changing guide block 77. A pitch-changing connection frame 710 is installed on the pitch-changing guide block 77. Several pitch-changing suction cups 711 are installed at equal intervals on the pitch-changing connection frame 710. The pitch-changing direction of the pick-up and place pitch-changing device 7 is horizontal and perpendicular to the pitch-changing direction of the receiving pitch-changing mechanism 62. The product undergoes a first pitch change in the X direction at the receiving pitch-changing mechanism 62. After the pick-up and place pitch-changing device 7 adsorbs the product after the first pitch change, the product undergoes a second pitch change in the Y direction at the pick-up and place pitch-changing device 7. After the second pitch change, the product is placed with the same spacing as the subsequent packaging tray.

[0040] The palletizing and stacking device 8 includes a pallet conveyor belt 81, a pallet lifting and feeding module 82, a pallet handling robot 83, a lifting and positioning unit 84, and a pallet stacking module 85. The pallet conveyor belt 81 is equipped with a pallet lifting and feeding module 82 and a pallet handling robot 83 on its side. The pallet handling robot 83 transports the empty pallet from the top of the pallet lifting and feeding module 82 to the pallet conveyor belt 81. The pallet conveyor belt 81 is equipped with a lifting and positioning unit 84 in the middle for lifting and blocking the pallet. The pick-and-place variable distance device 7 picks up the product and transports it to the empty pallet at this location in one go. The pallet conveyor belt 81 is equipped with a pallet stacking module 85 for stacking pallets filled with products at its end.

[0041] A method for testing and packaging button batteries, implemented using the aforementioned button battery testing and packaging production line, includes the following steps: S1. Battery orientation flipping feeding: The pallet feeding machine 22 feeds the pallet loaded with button batteries to be tested to the pallet conveyor line 21 in sequence. The pallet conveyor line 21 conveys the pallets. The lifting and positioning component 24 lifts and blocks the pallet to position it. The feeding flipping module 25 adsorbs the batteries and flips them so that the negative terminal is facing up. The handling and feeding module 26 handles and outputs the single row of button batteries to the transfer conveyor device 3. The empty pallets continue to be conveyed along the pallet conveyor line 21 and are stacked and stored by the pallet stacking machine 23. S2. Transfer and conveying process: The transfer and conveying device 3 conveys the button batteries, and the button batteries are guided by the guide chute 340 of the guide plate 34 and sent to the loading station of the detection device 4. S3, Turntable loading and sorting process: The indexing turntable 41 drives the transparent turntable 42 to rotate intermittently in an indexing manner; when the button battery arrives at the loading station, the first sorting plate 4322 and the second sorting plate 4323 of the sorting mechanism 43 form an arc track to correct the attitude of the button battery, and the through-beam fiber optic 433 detects the arrival signal of the material. S4. Multi-station visual comprehensive inspection: The turntable 42, carrying a button battery, passes through each inspection station sequentially. Multiple cameras, in conjunction with light sources and light shields, complete multi-dimensional appearance inspection. The system summarizes the inspection results from all stations and marks good and defective products, including the following steps: S4.1, First Inspection Station 401: The tilting camera inspects the negative electrode surface of the button battery for pits, scratches, and dirt; S4.2, Second Inspection Station 402: The upward-facing camera inspects the edge of the negative terminal of the button battery for dirt. S4.3, Third Inspection Station 403: The upward-facing camera inspects the button battery for black spots and dents at the rounded corners; S4.4, Fourth Inspection Station 404: Upward-facing camera inspects button battery negative electrode trenches for defects such as green mold and white fuzz; S4.5, Fifth Inspection Station 405: Three sets of 120° circumferentially divided tilting cameras inspect the outer wall of button batteries for dirt and scratches; S4.6, Sixth Inspection Station 406: Side-facing camera inspects the height of button batteries; S4.7, Seventh Inspection Station 407: The downward-facing camera below the turntable 42 inspects the positive terminal of the button battery for dirt and scratches through the transparent turntable; S4.8, Eighth Inspection Station 408: Downward tilt camera inspects the printing quality of the logo on the positive terminal of the button battery; S4.9, Ninth Inspection Station 409: Combined upper and lower cameras inspect the positive electrode surface of button batteries for pits, scratches, and dirt; S5. Defective product rejection: The turntable 42 rotates to the defective product unloading station. The air blowing pipe 441 of the unloading mechanism 44 blows air onto the button batteries marked as defective, blowing the defective products into the receiving chute 442 and falling into the defective product box below to complete the rejection. S6. Finished product unloading and conveying: The turntable 42 rotates to the finished product unloading station, and the unloading air pipe 52 blows the good button batteries into the unloading chute 51. The batteries are then guided by the unloading chute 51 and sent into the feeding conveyor line 53 for backward conveying. S7. Turntable surface cleaning: As the turntable 42 rotates past the cleaning station, the cleaning motor 451 drives the brush 452 to rotate, cleaning the surface of the material feeding area of ​​the turntable 42, removing dirt from the turntable surface and avoiding interference with subsequent visual inspection. S8. Pushing and straightening of materials and X-direction pitch change: Button batteries are conveyed along the feeding conveyor line 53 to the straightening track and arranged into a row. The baffle plate 616 blocks the incoming material. The pushing mechanism 61 works: the pushing cylinder 612 extends, and the cam bearing follower 6174 moves along the elongated waist-shaped limiting groove 6170 of the track limiting plate 6175, driving the limiting plate 615 to rotate and lift. The pushing plate 613 pushes the single row of finished batteries as a whole to the receiving pitch change mechanism 62. The pitch change cylinder 626 of the receiving pitch change mechanism 62 retracts, and through the pitch change connection component 625, it pulls each group of guide blocks 624 step by step, driving the receiving plate 627 to complete the X-direction pitch change and adjust the spacing between the single row of batteries. S9, Y-direction secondary pitch change pick-and-place: The pick-and-place pitch change device 7 picks up the row of button batteries after the first pitch change in the X direction. The second pitch change cylinder 79 of the pick-and-place pitch change device 7 drives the pitch change component 78 to move, completing the secondary pitch change in the Y direction. After the XY two-dimensional pitch change, the row and column spacing of the button batteries is completely matched with the placement matrix spacing of the packaging tray. S10, Finished Product Palletizing: The pallet lifting and feeding module 82 outputs an empty pallet, and the pallet handling robot 83 transports the empty pallet to the pallet conveyor belt 81. The empty pallet is then transported to the lifting and positioning unit 84 for lifting and blocking positioning. The pick-and-place variable pitch device 7 places the button batteries after two-dimensional variable pitch into the empty pallet to complete the palletizing. The finished product pallet loaded with button batteries is transported along the pallet conveyor belt 81 to the end, where the finished product pallet is stacked by the pallet pallet stacking module 85.

[0042] This invention discloses a button battery testing and packaging production line and method, which integrates the entire process of feeding, transferring, cleaning, testing, rejecting, unloading, variable-distance tray placement, and palletizing into a single operation. The workstations are closely linked, solving the problems of segmented operation, process disconnect, and easy material jamming and misalignment in traditional equipment. The equipment has a high degree of automation, requires no manual intervention, effectively reduces labor costs and operational error rate, operates stably, and has strong production continuity, significantly improving the overall mass production efficiency of button battery testing and packaging, and meeting the production needs of high precision, standardization, and large-scale production.

[0043] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A button battery testing and packaging production line, characterized in that: include: Rack (1); Feeding device (2), installed on the frame (1) and used to provide the product to be tested; The transfer and conveying device (3) is located at the unloading position of the feeding device (2) and is used for transferring and conveying products; The inspection device (4) includes an indexing turntable (41) and a turntable (42) driven to rotate by the indexing turntable (41). A cleaning station, a loading station, an inspection station, a defective product unloading station, and a two-finished product unloading station are arranged sequentially around the turntable (42). A cleaning device (45) is provided at the cleaning station. A material handling mechanism (43) is provided at the loading station and connected to the output end of the transfer and conveying device (3). A camera for multi-dimensional appearance inspection of the product is provided at the inspection station. A unloading mechanism (44) is provided at the defective product unloading station. Two finished product unloading conveyor lines (5) are set at the finished product unloading station; The pusher and receiver module (6) includes a pusher mechanism (61) on one side of the end of the finished product unloading conveyor line (5) and a receiver pitch changer mechanism (62) that docks with the pusher mechanism (61) to receive the product and change its pitch once in the X direction. The pick-and-place variable pitch device (7) includes a variable pitch suction cup (711) located above the receiving variable pitch mechanism (62) for adsorbing the product and changing the pitch in the Y direction. The palletizing device (8) is connected to the pick-and-place variable distance device (7) and is used for palletizing and packaging products.

2. The button battery testing and packaging production line according to claim 1, characterized in that: The pushing mechanism (61) includes a pushing cylinder (612), a push plate (613) mounted on the slide of the pushing cylinder (612), a quick-change material-forming plate (614) mounted on the push plate (613), a limiting plate (615) located outside the material-forming plate (614) and driven by the pushing cylinder (612) to rotate and open, and a baffle plate (616) located at the end of the finished product unloading conveyor line (5). The material-forming plate (614) is located above the feeding conveyor line (53) of the finished product unloading conveyor line (5) and has a material-forming groove at its bottom. The material-forming groove and the limiting plate (615) on its outside form a material-forming track for organizing the conveyed products into a row. The baffle plate (616) is located on the feeding conveyor line (53) behind the material-forming plate (614) and the limiting plate (615).

3. The button battery testing and packaging production line according to claim 2, characterized in that: The limiting plate (615) is mounted on the push plate (613) via a rotating assembly (617); the rotating assembly (617) includes two fixed seats (6171) mounted on the push plate (613), a movable seat (6172) rotatably mounted on the fixed seats (6171), a U-shaped frame (6173) fixed to the two movable seats (6172), a cam bearing follower (6174) mounted to the end of the legs of the U-shaped frame (6173), and a connecting plate fixed to the push cylinder (612). The trajectory limiting plate (6175) is fixedly connected to the end. The middle part of the leg of the U-shaped frame (6173) is fixedly connected to the movable seat (6172). The limiting plate (615) is vertically fixed to the head of the U-shaped frame (6173). The trajectory limiting plate (6175) is vertically set. The trajectory limiting plate (6175) is provided with a long waist-shaped limiting groove (6170) that is obliquely set along the extension direction of the slide of the pusher cylinder (612). The rotating part of the cam bearing follower (6174) is located in the long waist-shaped limiting groove (6170).

4. The button battery testing and packaging production line according to claim 1, characterized in that: The receiving pitch-changing mechanism (62) includes a receiving bracket (621), two baffles (622) installed at the bottom of the receiving bracket (621), a guide post (623) inserted between the two baffles (622), a plurality of guide blocks (624) mounted on the guide post (623), a pitch-changing connection assembly (625) connecting two adjacent guide blocks (624), a pitch-changing cylinder (626) installed on the baffle (622) and which drives the multiple sets of guide blocks (624) to change pitch and unfold through the contraction of the piston rod, and a plurality of receiving plates (627) installed on the guide blocks (624) for receiving the products pushed out by the pushing mechanism (61). The piston rod of the pitch-changing cylinder (626) is fixedly connected to the outer guide block (624).

5. A button battery testing and packaging production line according to claim 4, characterized in that: The variable pitch connection assembly (625) includes a variable pitch connection plate (6251) and a limiting pin (6252). The tail of the variable pitch connection plate (6251) is fixed on the guide block (624). The head of the variable pitch connection plate (6251) is provided with an outwardly protruding connecting part (6253). The tail of the variable pitch connection plate (6251) is provided with an avoidance opening (6254) that cooperates with the connecting part (6253). The middle of the connecting part (6253) is provided with an elongated through hole (6255). The limiting pin (6252) is installed on the guide block (624) adjacent to the variable pitch connection plate (6251). The limiting pin (6252) passes through the elongated through hole (6255). The length of the elongated through hole (6255) is the variable pitch distance.

6. The button battery testing and packaging production line according to claim 1, characterized in that: The feeding device (2) includes a pallet conveyor line (21), a pallet stacker (22) installed at the input end of the pallet conveyor line (21) for providing pallets to be tested, a pallet stacker (23) installed at the output end of the pallet conveyor line (21) for stacking empty pallets, lifting and positioning components (24) equidistantly arranged along the output direction of the pallet conveyor line (21) for lifting and blocking pallets, a feeding flipping module (25) located on the side of one of the lifting and positioning components (24) for uniformly adsorbing products in the pallet and flipping them to the negative pole facing upwards, and a feeding flipping module (25) located on the side of the feeding flipping module (25) for adsorbing the flipped products. The material handling and loading module (26) includes a vertical plate (251), a lifting cylinder (252) mounted on the vertical plate (251), a turntable cylinder (253) driven by the lifting cylinder (252) to perform lifting and lowering movements, an adsorption plate (254) driven by the turntable cylinder (253) to perform flipping, and an array of suction cups (255) mounted on the adsorption plate (254) and corresponding to the products in the tray. The piston rod of the lifting cylinder (252) passes through the cylinder mounting plate, and the extended end of the piston rod is fitted with a spring (256) that abuts against the cylinder mounting plate. The turntable cylinder (253) is mounted on the cylinder mounting plate.

7. The button battery testing and packaging production line according to claim 1, characterized in that: The transfer and conveying device (3) includes a first belt conveyor (31) located at the material feeding position of the feeding device (2), a flow channel reversing module (32) that is laterally connected to the output end of the first belt conveyor (31), a second belt conveyor (33) that is connected to the discharge port below the flow channel reversing module (32), and a guide plate (34) installed above the belt at the output end of the second belt conveyor (33). The lower end of the guide plate (34) is provided with a guide chute (340) for connecting the belt and the turntable (42).

8. The button battery testing and packaging production line according to claim 1, characterized in that: The inspection station includes a first to a ninth inspection station arranged sequentially along the turntable (42). The first inspection station is equipped with two upward tilting cameras pointing from above the product side; the second, third, and fourth inspection stations are equipped with upward-viewing cameras pointing from the front of the product; the fifth inspection station is equipped with three sets of equally inclined cameras arranged at 120° along the circumference; the sixth inspection station is equipped with a side camera pointing from the product side; the seventh inspection station is equipped with a downward-viewing camera located below the turntable and pointing towards the positive pole of the bottom surface of the product; the eighth inspection station is equipped with a downward tilting camera pointing from below the product side; and the ninth inspection station is equipped with inspection cameras located above and below the product. Each camera at the inspection station is mounted on an adjustment bracket that can finely adjust the angle. The inspection station is also equipped with a light source and a light shield that cooperate with each inspection camera.

9. A button battery testing and packaging production line according to claim 5, characterized in that: The pick-and-place pitch-changing device (7) further includes a pick-and-place bracket (71), a Y-axis linear module (72) mounted on the pick-and-place bracket (71), a Z-axis cylinder (73) driven by the Y-axis linear module (72) to move horizontally, a lifting frame (74) driven by the Z-axis cylinder (73) to move vertically, two baffles (75) mounted on the bottom surface of the lifting frame (74), pitch-changing guide columns (76) inserted into the two baffles (75), and several sets of pitch-changing guide columns (76) on the pitch-changing guide columns (76). The variable pitch guide block (77), the variable pitch assembly (78) connecting two adjacent variable pitch guide blocks (77), the second variable pitch cylinder (79) installed on the lifting frame (74) and driving several variable pitch guide blocks (77) to change pitch in the Y direction, and the variable pitch connecting frame (710) installed on the variable pitch guide block (77), and several variable pitch suction cups (711) are equally spaced on the variable pitch connecting frame (710). The structure of the variable pitch assembly (78) is the same as the structure of the variable pitch connecting assembly (625).

10. A method for testing and packaging button batteries, characterized in that: Using a button battery testing and packaging production line according to any one of claims 1-9 includes the following steps: S1, Battery attitude flipping feeding: The pallet feeding machine (22) feeds the pallets loaded with products to be tested to the pallet conveyor line (21) in sequence. The lifting and positioning component (24) lifts up and blocks the pallet conveyor line (21) to transport the pallets. The feeding flipping module (25) adsorbs the products and flips them uniformly so that the negative electrode faces up. The handling and feeding module (26) transports and outputs the single-row products to the transfer conveyor device (3). The empty pallets continue to be transported along the pallet conveyor line (21) and are stacked and stored by the pallet stacking machine (23). S2, Transfer and conveying process: The transfer and conveying device (3) conveys the product, and the product is guided by the guide chute (340) of the guide plate (34) and sent to the loading station of the testing device (4); S3, Turntable loading and sorting process: The indexing turntable (41) drives the transparent turntable (42) to rotate intermittently; when the product arrives at the loading station turntable (42), the arc track of the sorting mechanism (43) corrects the posture of the product, and the through-beam fiber (433) detects the arrival signal of the material. S4. Multi-station visual comprehensive inspection: The turntable (42) carrying the button battery passes through each inspection station in sequence. Multiple cameras, together with light sources and light shields, complete multi-dimensional appearance inspection. The system summarizes the inspection results of all stations and marks good and bad products, including the following steps: S4.1 First inspection station: The tilting camera inspects the negative electrode surface of the product for pits, scratches, and dirt; S4.2, Second Inspection Station: The upward-facing camera inspects the edge of the negative electrode of the product for dirt. S4.3, Third Inspection Station: The upward-facing camera inspects the product's rounded corners for black spots and dents; S4.4, Fourth Inspection Station: The upward-facing camera inspects the negative electrode trench for defects such as green mold and white fuzz. S4.5, Fifth Inspection Station: Three sets of 120° circumferentially divided tilting cameras inspect the outer wall of the product for dirt and scratches; S4.6, Sixth Inspection Station: Side-view camera inspects product height dimensions; S4.7, Seventh Inspection Station: The downward-facing camera below the turntable 42 inspects the positive electrode of the product for dirt and scratches through the transparent turntable; S4.8, Eighth Inspection Station: The tilting camera inspects the printing quality of the positive electrode logo on the product; S4.9, Ninth Inspection Station: The upper and lower cameras are combined to inspect the positive electrode surface of the product for pits, scratches, and dirt; S5, Defective product rejection: The turntable (42) rotates to the defective product unloading station, and the air blowing pipe of the unloading mechanism (44) blows air onto the products marked as defective, blowing the defective products off and sliding them into the defective product box. S6. Finished product unloading and conveying: The turntable (42) rotates to the finished product unloading station, and the finished product unloading conveyor line (5) blows the good button batteries down to the feeding conveyor line and conveys them backward; S7. Turntable surface cleaning: The turntable (42) rotates past the cleaning station. The cleaning motor drives the brush to rotate and clean the surface of the feed area of ​​the turntable (42) to remove dirt from the turntable surface and avoid interfering with subsequent visual inspection. S8, Pushing and straightening and X-direction pitch change: The products are conveyed along the feeding conveyor line to the straightening track and arranged into a row. The baffle plate (616) blocks the incoming material. The pushing mechanism (61) works: the pushing cylinder (612) extends, and the cam bearing follower (6174) moves along the long waist-shaped limiting groove (6170) of the track limiting plate (6175), driving the limiting plate (615) to rotate and lift. The push plate (613) pushes the single row of products to the receiving pitch change mechanism (62) until the receiving pitch change mechanism (62) is full of products. The pitch change cylinder (626) of the receiving pitch change mechanism (62) retracts and pulls each group of guide blocks (624) step by step through the pitch change connection component (625), driving the receiving plate (627) to complete the X-direction pitch change and adjust the spacing between the single row of products. S9, Y-direction secondary pitch change pick-up and place: The pick-up and place pitch change device (7) adsorbs the entire row of products after the first pitch change in the X direction. The second pitch change cylinder (79) of the pick-up and place pitch change device (7) drives the pitch change component (78) to move, completing the second pitch change in the Y direction. After the XY two-dimensional pitch change, the product row and column spacing is completely matched with the placement matrix spacing of the packaging pallet. S10, Finished product palletizing: The pick-and-place variable distance device (7) puts the product after two-dimensional variable distance into the empty pallet at the palletizing device (8) and stacks the loaded finished product pallets.

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