Welding equipment for explosion-proof piece of circular battery cover plate

Abstract

The invention relates to the technical field of battery cover plate manufacturing, in particular to a circular battery cover plate anti-explosion piece welding device which comprises a positioning tool, the positioning tool is provided with a containing groove matched with a battery cover plate in shape, a plurality of vacuum suction holes are formed in the bottom of the containing groove, and at least one vacuum suction hole right faces the position of an embedding groove; the transfer device is used for sequentially and circularly transferring the positioning tools to all the stations; the battery cover plate feeding device is used for conveying a battery cover plate into the placing groove; the anti-explosion sheet feeding device is used for conveying an anti-explosion sheet to the battery cover plate; the welding device is used for welding the explosion-proof sheet on the battery cover plate; and the discharging device is used for transferring the welded battery cover plate out of the positioning tool. The positioning accuracy of the anti-explosion piece and the battery cover plate can be guaranteed, and the welding quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of battery cover plate manufacturing, and in particular to a circular battery cover plate explosion-proof sheet welding device. Background Art

[0002] As an important component of lithium batteries, the battery cover is particularly important in ensuring the quality and safety of lithium battery products. The explosion-proof plate welding operation of the battery cover has the characteristics of high precision requirements and strict quality control. The traditional welding equipment uses a slot-type positioning during the welding process, which cannot guarantee the positioning requirements of the circular battery cover, resulting in a low product quality pass rate. Summary of the invention

[0003] In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a circular battery cover explosion-proof plate welding device, which can ensure the accuracy of positioning the explosion-proof plate and the battery cover and improve the welding quality.

[0004] In order to achieve the above object, the present invention is implemented through the following technical solutions: A circular battery cover explosion-proof plate welding device is used to weld the explosion-proof plate to the battery cover to form a product. The battery cover is provided with an embedding groove adapted to the explosion-proof plate, and a perforation is provided at the bottom of the embedding groove, comprising: a positioning tool, the positioning tool is provided with a placement groove adapted to the shape of the battery cover, and a plurality of vacuum suction holes are provided at the bottom of the placement groove, at least one vacuum suction hole is directly opposite to the position of the embedding groove; a group of workstations, the workstations sequentially include a first loading workstation, a second loading workstation, a welding workstation and a unloading workstation in a circular array; a transfer device, ... The transport device is used to circulate and transfer the positioning tooling to each station in sequence; the battery cover feeding device located at the first loading station is used to convey the battery cover to the placement slot; the explosion-proof plate feeding device located at the second loading station is used to convey the explosion-proof plate to the battery cover; the welding device located at the welding station is used to weld the explosion-proof plate to the battery cover; the unloading device located at the unloading station is used to transfer the battery cover after welding out of the positioning tooling.

[0005] Based on the above structure, the working method includes the following steps: The battery cover feeding device at the first loading station conveys the battery cover to the placement groove on the positioning tool, and the vacuum suction hole sucks the battery cover in the placement groove; The transfer device drives the positioning tool to rotate to the second loading station, and the explosion-proof disk feeding device conveys the explosion-proof disk to the battery cover plate, and the vacuum suction hole facing the embedded groove sucks the explosion-proof disk; The transfer device drives the positioning tool to rotate to the welding station, and the welding device realizes the welding of the explosion-proof plate and the battery cover to form a product; The transfer device drives the positioning fixture to rotate to the unloading station, and the unloading device transfers the welded products out of the positioning fixture.

[0006] It can be seen from the above technical solution that the present invention has the following beneficial effects: The present invention provides a circular battery cover explosion-proof plate welding device, which can realize automatic feeding and welding, and the explosion-proof plate and the battery cover are positioned through vacuum suction holes on a positioning tool, thereby ensuring the accuracy of positioning the explosion-proof plate and the battery cover during the movement of the positioning tool and the welding process, thereby improving the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 A plan view of a circular battery cover explosion-proof plate welding device in an embodiment of the present application; Figure 2 A schematic diagram of the three-dimensional structure of a circular battery cover explosion-proof plate welding device in an embodiment of the present application; Figure 3 It is a plan view of the battery cover feeding device in the embodiment of the present application; Figure 4 It is a schematic diagram of the three-dimensional structure of the battery cover feeding device in the embodiment of the present application; Figure 5 It is a structural schematic diagram of the execution end of the transfer robot in the embodiment of the present application; Figure 6 It is a schematic diagram of the structure of the deviation corrector in the embodiment of the present application; Figure 7 It is a structural schematic diagram of the deviation correction seat in the embodiment of the present application; Figure 8 It is a plan view of the bursting disk feeding device in the embodiment of the present application; Fig. 9 It is a schematic diagram of the three-dimensional structure of the explosion-proof disk feeding device in the embodiment of the present application; Fig.10 This is a schematic diagram of the structure of the explosion-proof disk feeding robot in the embodiment of the present application; Fig.11 It is a structural schematic diagram of a welding device in an embodiment of the present application; Fig.12 This is a schematic diagram of the structure of a product visual inspection device in an embodiment of the present application; Fig.13 It is an exploded view of the components of the product in the embodiment of the present application; Fig.14 It is a structural schematic diagram of the positioning tool in the embodiment of the present application; Fig.15 It is a structural schematic diagram of the feeding device in the embodiment of the present application; Fig.16It is a structural schematic diagram of a temporary storage compensation device in an embodiment of the present application; Fig.17 It is a structural schematic diagram of the feeder in the embodiment of the present application; Fig.18 This is a schematic diagram of the installation of the transfer plate and the connecting plate in the embodiment of the present application; Fig.19 It is a structural schematic diagram of the tray conveying device in the embodiment of the present application; Fig. 20 It is a structural schematic diagram of the first conveyor belt disc feeder in the embodiment of the present application; Fig.21 It is a structural schematic diagram of the lifting conveyor in the embodiment of the present application; Fig. 22 is a schematic diagram of the structure of the transfer device in the embodiment of the present application; Fig.23 It is a schematic structural diagram of a stacking device in an embodiment of the present application; Fig.24 It is a schematic diagram of the structure of the one-way stop in the embodiment of the present application.

[0008] In the figure: 1-positioning tool; 11-placing slot; 110-vacuum suction hole; 2-battery cover feeding device; 21-corrector; 211-correction seat; 2110-correction storage slot; 2111-seat; 2112-rotating shaft; 2113-positioning block; 21130-positioning slope; 2114-correction suction cup; 212-rotation drive; 213-cross plate; 214-sleeve; 22-transfer manipulator; 221-conical table; 222-transfer vacuum suction head; 23-feeding manipulator; 231-feeding mobile module; 232-feeding vacuum suction cup; 24-transfer moving device; 25-correction visual detection device; 26-correction detection mobile module; 3-explosion-proof disk feeding device; 31-explosion-proof disk feeding manipulator; 311-explosion-proof disk suction nozzle; 32-explosion-proof disk visual detection device; 321-explosion-proof disk detection camera; 4- welding device; 41- welding gun; 42- welding mobile module; 43- welding visual guide device; 5-feeding device; 51-feeding manipulator; 511-feeding nozzle; 52-temporary storage compensation device; 520-temporary storage tank; 521-storage seat; 522-lifting drive; 523-detector; 53-conveyor belt feeder; 6- Turntable; 7-feeder; 71-transfer plate; 710-feeder storage slot; 711-long hole; 72-feeder conveyor belt; 73-connecting plate; 74-baffle; 741-first support rail; 742-second support rail; 75-positioning roller; 76-correction baffle; 8-tray conveying device; 81-first conveyor belt tray feeder; 811-first conveyor belt; 82-lifting conveyor; 821-lifting frame; 83-transfer device; 831-transfer moving module; 8311-first lateral moving module; 8312-second lateral moving module; 8313-a pair of longitudinal moving modules; 832-tray picking device; 833-material picking device; 84-stacking device; 841-second conveyor belt tray feeder; 842-top tray device; 8421-push plate; 843-closing bin; 844-one-way stopper; 8441-mounting frame; 84411-convex portion; 8442-locking tongue; 8443-adjusting screw; 8444-limiting block; 85-clamping block; 851-first clamping block; 852-second clamping block; 86-limiting frame; 87-separating plate; 9-product; 91-explosion-proof disk; 92-battery cover; 921-embedded groove; 93-Product visual inspection device; DETAILED DESCRIPTION

[0009] like Figures 1 to 2 A circular battery cover explosion-proof plate welding device is shown, which is used to weld the Fig.13 The explosion-proof plate 91 shown is welded to the battery cover plate 92 to form the product 9. The battery cover plate 92 is provided with an embedding groove 921 adapted to the explosion-proof plate 91. The bottom of the embedding groove 921 is provided with a perforation, including: Fig.14 The positioning fixture 1 shown is provided with a placement groove 11 adapted to the shape of the battery cover, and a plurality of vacuum suction holes 110 are provided at the bottom of the placement groove 11, at least one vacuum suction hole 110 is directly opposite to the position of the embedding groove 921; a group of workstations, the workstations sequentially include a first loading station, a second loading station, a welding station and a unloading station in a circular array; a transfer device, the transfer device is used to cyclically transfer the positioning fixture 1 to each workstation in sequence; a battery cover feeding device 2 located at the first loading station, the battery cover feeding device 2 is used to convey the battery cover 92 to the placement groove 11; a bursting piece feeding device 3 located at the second loading station, the bursting piece feeding device 3 is used to convey the bursting piece 91 to the battery cover 92; a welding device 4 located at the welding station, the welding device 4 is used to weld the bursting piece 91 to the battery cover 92; a unloading device 5 located at the unloading station, the unloading device 5 is used to transfer the battery cover 92 after welding out of the positioning fixture 1.

[0010] Based on the above structure, its working method includes the following steps: the battery cover feeding device 2 on the first loading station conveys the battery cover 92 to the placement groove 11 on the positioning tool 1, and the vacuum suction hole 110 sucks the battery cover 92 in the placement groove 11; the transfer device drives the positioning tool 1 to rotate to the second loading station, and the explosion-proof piece feeding device 3 conveys the explosion-proof piece 91 to the battery cover 92, and the vacuum suction hole 110 facing the embedding groove 921 sucks the explosion-proof piece 91; the transfer device drives the positioning tool 1 to rotate to the welding station, and the welding device 4 realizes the welding of the explosion-proof piece 91 and the battery cover 92 to form a product 9; the transfer device drives the positioning tool 1 to rotate to the unloading station, and the unloading device 5 transfers the welded product 9 out of the positioning tool 1.

[0011] Therefore, a circular battery cover explosion-proof plate welding equipment in this embodiment can realize automatic loading and welding, and the explosion-proof plate 91 and the battery cover plate 92 are positioned on the positioning tool 1 through the vacuum suction hole 110, ensuring the accuracy of positioning the explosion-proof plate 91 and the battery cover plate 92 during the movement of the positioning tool 1 and the welding process, thereby improving the welding quality.

[0012] In this embodiment, the transfer device includes a rotating turntable 6, a plurality of positioning fixtures 1 are installed on the turntable 6 in a circumferential array, a group of workstations are arranged around the rotation center circumference of the turntable 6, a group of workstations are located radially outside the turntable 6, and the number of positioning fixtures 1 corresponds to the number of workstations; on the positioning fixture 1, a plurality of groups of placement slots 11 are arranged on the positioning fixture 1, and the second loading station and / or welding station correspond to the number of groups of placement slots 11. In this embodiment, two groups of placement slots 11 are provided, each group of two placement slots 11, and correspondingly, the second loading station and the welding station are each provided with a pair.

[0013] Based on the above device, the devices of each station can work at the same time. After the devices of each station are executed, the turntable 6 rotates one beat, and each positioning fixture 1 is transferred to the next station, which can improve production efficiency. If four placement slots 11 are set on the same positioning fixture 1, and only one second loading station and welding station are set, then in order to improve efficiency, a suction nozzle and a detection camera corresponding to each placement slot 11 need to be set on the second loading station. Under the premise that the installation space of the suction nozzle and the detection camera is certain, the intervals between the placement slots 11 will be too large, resulting in the positioning fixture 1 being too large in size, and the positioning accuracy requirements will also be increased, resulting in high manufacturing difficulty and high cost. Therefore, based on the above structure, the compactness of the positioning fixture 1 can be improved while ensuring the number of placement slots 11 on the positioning fixture 1, reducing the manufacturing difficulty and saving manufacturing costs.

[0014] Combination Figures 8 to 10 As shown in the figure, in this embodiment, the explosion-proof disc feeding device 3 includes: A bursting disk feeding robot 31, the execution end of which is provided with a bursting disk suction nozzle 311 corresponding one-to-one to a group of placement slots 11, and the opening of the bursting disk suction nozzle 311 faces downward; a bursting disk visual detection device 32, the bursting disk visual detection device 32 includes a bursting disk detection camera 321 corresponding one-to-one to a group of bursting disk suction nozzles 311, and the bursting disk visual detection device 32 is provided with two groups, one group of the bursting disk visual detection device 32 is located outside the turntable 6 and the lens of the bursting disk detection camera 321 faces upward; the other group of the bursting disk visual detection device 32 is located above the positioning tool 1 facing the second loading station and the lens of the bursting disk detection camera 321 faces downward to a group of placement slots 11.

[0015] The explosion-proof disc feeding manipulator 31 first transfers the material taking position of the explosion-proof disc suction nozzle 311. After the explosion-proof disc suction nozzle 311 adsorbs the explosion-proof disc 91 and completes the material taking, the explosion-proof disc feeding manipulator 31 transfers the explosion-proof disc 91 to the top of a group of explosion-proof disc visual detection devices 32 with upward lenses to detect the quality of the lower end surface of the explosion-proof disc 91, and then transfers the explosion-proof disc 91 to the embedded groove 921 of the battery cover 92 placed in a group of placement grooves 11. After the explosion-proof disc suction nozzle 311 is removed, a group of explosion-proof disc visual detection devices 32 above the positioning tool 1 detect the quality of the upper end surface of the explosion-proof disc 91. If the detection quality is unqualified, the explosion-proof disc feeding manipulator 31 drives the explosion-proof disc suction nozzle 311 to shave out the unqualified explosion-proof disc 91 until all the explosion-proof discs 91 corresponding to a group of placement grooves 11 are placed on the battery cover 92, and the turntable 6 rotates one beat. The quality of the upper and lower end surfaces of the explosion-proof disc 91 can be tested to ensure the quality of the explosion-proof disc 91 before welding. In addition, the explosion-proof disc suction nozzle 311 does not need to put down the explosion-proof disc 91 during the testing process, which saves work time and improves the testing efficiency compared to the general method of placing the material on a dedicated testing station for testing. In this embodiment, each welding station welds a group of explosion-proof discs 91 corresponding to the placement slots 11, and the welding device 4 uses a mobile module to drive a mobile welding machine.

[0016] Combination Fig.11 As shown, in this embodiment, the welding device 4 includes a welding gun 41, a welding movable module 42 and a welding visual guide device 43. The welding visual guide device 43 is used to locate the center position of the explosion-proof plate 91 to determine the actual welding trajectory, and the welding movable module 42 is used to drive the welding gun 41 to move according to the welding trajectory to complete the welding action.

[0017] The above device can ensure the welding accuracy and improve the product quality. It plays a role in rough positioning of the battery cover plate 92 and the explosion-proof plate 91 on the positioning tool 1 for circumferential deviation correction. Otherwise, it will increase the difficulty of positioning the welding visual guide device 43, and each welding trajectory deviation will also produce a large cumulative error.

[0018] In this embodiment, the workstation also includes a detection workstation disposed between the welding workstation and the blanking workstation, and also includes a detection workstation such as Fig.12 The product visual inspection device 93 shown is used to inspect the quality of the product 9 .

[0019] Conventional product transfer devices usually transfer products one by one and check product quality before transfer. Therefore, each time a product is transferred, it is either removed or placed in a qualified product storage location. In order to improve transfer efficiency, a group of products can be transferred each time. However, when some unqualified products appear in a group of products, the removal of unqualified products will cause vacancies in the qualified product storage location. The next transfer needs to compensate for the vacancies first, and new vacancies will be generated after compensating for the vacancies. This will make the control system complex and unstable. In this regard, combined with Figure 15 to Figure 16 As shown, in this embodiment, the unloading device 5 includes: an unloading manipulator 51, on which is disposed an unloading suction nozzle 511 corresponding to each product 9 in the positioning fixture 1; a temporary storage compensation device 52, which includes a group of storage seats 521, on which are disposed temporary storage storage slots 520 adapted to the product 9, and the number of storage seats 521 is one less than the number of placement slots 11 on each positioning fixture 1. It also includes Fig.17 The feeder 7 shown in the figure has a transfer plate 71 on its moving component, and the transfer plate 71 is provided with a feed receiving groove 710 corresponding to each unloading suction nozzle 511 , and the feed receiving groove 710 is used to receive the product 9 .

[0020] Based on the above device, before unloading, the product visual inspection device 93 detects the quality of the product 9 in the positioning fixture 1. During unloading, the unloading robot 51 moves the unloading nozzle 511, and the unloading nozzle 511 is used to pick up and place the product 9, so as to place the qualified product in the feeding storage slot 710 and transport it through the feeder 7, and remove the unqualified products. Specifically, a conveyor belt feeder 53 is set on one side of the unloading robot 51 to receive and transport unqualified products. When the number of unqualified products is greater than 1 and less than the number of placement slots 11 on each positioning fixture 1, it will cause the temporary storage slot 520 on the storage seat 521 to be unable to be filled and produce vacancies, which will affect the subsequent product discharge. In order to solve this problem, a temporary storage compensation device 52 is set. The method of use is: before the unloading manipulator 51 places qualified products each time, if the number of qualified products is greater than 1 and less than the number of placement slots 11 on each positioning fixture 1, the number a of qualified products 9 and the number b of vacant temporary storage slots 520 on a group of storage seats 521 are calculated. If a≤b, the qualified products on the unloading manipulator 51 are transferred to the vacant temporary storage slots 520. If a>b, the qualified products are transferred from the temporary storage slots 520 storing qualified products to the feeding storage slots 710 so that the feeding storage slots 710 on the transfer plate 71 are filled with qualified products. This ensures that the feeding storage slots 710 on the transfer plate 71 are either completely empty or filled with products after unloading once. After being filled with products, the feeder 7 transports the transfer plate 71 away. Based on the above device, it can be ensured that the material feeding storage trough 710 in the transfer plate 71 will not be partially empty during each transfer (either completely full or completely empty), thereby improving the transfer efficiency and stability.

[0021] In this embodiment, the feeder 7 includes a feed conveyor belt 72, a transfer plate 71 is arranged on the feed conveyor belt 72, and a group of transfer plates 71 are arranged along the circumferential extension direction of the belt body of the feed conveyor belt 72; baffles 74 are arranged on both sides of the feed conveyor belt 72, and a first support rail 741 is arranged on the upper end of the baffle 74. The first support rail 741 is used to support the two sides of the bottom of the transfer plate 71 during the conveying process of the transfer plate 71. Among them, the transfer plate 71 moves to the two ends of the conveying direction of the feed conveyor belt 72 for loading and unloading respectively. In this process, the feed conveyor belt 72 is used to transmit power to the transfer plate 71, and the first support rail 741 is used to ensure the stability of the movement of the transfer plate 71. After unloading, the empty transfer plate 71 is flipped to the bottom of the feed conveyor belt 72 and reversely circulated to the front end.

[0022] In this embodiment, a pair of second support rails 742 are further included, which are located on both sides of the conveyor belt 72. The second support rails 742 are arranged below the conveyor belt 72. When the transfer plate 71 is turned over to below the conveyor belt 72, the second support rails 742 are used to support both sides of the transfer plate 71 to bear the weight of the transfer plate 71, so as to prevent the transfer plate 71 from falling and damaging the conveyor belt 72. Specifically, the second support rails 742 are connected to the baffle plate 74.

[0023] In this embodiment, the baffle 74 is provided with a limiter, which is arranged in pairs on both sides of the feeding conveyor belt 72, and the spacing between the limiters on both sides is adapted to the width of the transfer plate 71; the limiter includes a group of arranged positioning rollers 75, and the position of the positioning rollers 75 corresponds to the position of the transfer plate 71 waiting for loading and unloading in the conveying direction of the feeder 7. Based on the above device, the transfer plate 71 moves to the position where the upper limit of the width direction of the positioning rollers 75 on both sides is located to wait for loading and unloading, so as to ensure the position accuracy of the transfer plate 71 in the width direction when loading and unloading. The positioning of the transfer plate 71 in the conveying direction can be detected by a position sensor to achieve positioning.

[0024] In this embodiment, the limiting member includes a deflection correction baffle 76, which is arranged in the middle section of the conveying direction of the feeder 7, and is used to correct the lateral deviation of the feed conveyor belt 72 during the conveying process.

[0025] Combination Fig.18 As shown, in this embodiment, a group of connecting plates 73 are installed on the belt body of the feeding conveyor belt 72, and the transfer plate 71 is installed on the connecting plates 73. The transfer plate 71 is provided with a long hole 711 extending in the width direction, and the transfer plate 71 and the connecting plates 73 are connected by bolts passing through the long holes 711. In this embodiment, the feeding conveyor belt 72 and the transfer plate 71 are connected by the connecting plates 73, so that the transfer plate 71 can adjust the position in the width direction along the long holes 711.

[0026] Combination Fig.16As shown, in this embodiment, the temporary storage compensation device 52 includes a lifting driver 522, and the lifting driver 522 corresponds to the storage seat 521 one by one. The lifting driver 522 is used to drive the storage seat 521 to move longitudinally to switch between the transfer position and the reset position, and the transfer position is higher than the reset position. In the process of transferring products between the unloading robot 51 and the temporary storage compensation device 52, the unloading suction nozzle 511 and the storage seat 521 that are not involved in the transfer need to be spaced longitudinally to avoid interference. If the lifting driver 522 drives the unloading suction nozzle 511 to move, the lifting driver 522 needs to be installed on the unloading robot 51, which will increase the load on the execution end of the unloading robot 51 and cause a decrease in positioning accuracy. In this embodiment, when transferring products between the unloading manipulator 51 and the temporary storage compensation device 52, the storage seat 521 to be transferred is moved to the transfer position by the lifting driver 522, and the other storage seats 521 are in the reset position, and only one storage seat 521 is moved to the transfer position each time, and the unloading manipulator 51 moves the corresponding unloading nozzle 511 to the top of the storage seat 521 to be transferred to transfer the product, thereby avoiding interference during the transfer process and not affecting the positioning accuracy of the unloading manipulator 51. Specifically, the lifting driver 522 is a cylinder connected to the bottom of the storage seat 521. Specifically, the temporary storage compensation device 52 includes a detector 523, which is arranged on the storage seat 521, and the detector 523 is used to detect whether there is a product 9 placed on the storage seat 521. Specifically, the detector 523 is a photoelectric sensor, which is arranged at the bottom of the temporary storage slot 520.

[0027] Combination Figures 3 to 7As shown, in this embodiment, the battery cover feeding device 2 includes: a deflection corrector 21, the deflection corrector 21 includes a group of deflection correcting seats 211 and a rotating driver 212 corresponding to the deflection correcting seats 211, the deflection correcting seats 211 are provided with a deflection correcting storage groove 2110 adapted to the battery cover 92, and the deflection correcting storage groove 2110 is provided with a deflection correcting suction cup 2114 at the bottom, and the deflection correcting suction cup 2114 is used to adsorb the battery cover 92 placed in the deflection correcting storage groove 2110; the rotating driver 212 is transmission-connected with the deflection correcting seat 211; a material transfer moving device 24, the deflection corrector 21 is arranged on the movable component of the material transfer moving device 24, and the material transfer moving device 24 is used to transport the deflection corrector 21 to switch between the transfer-in position, the detection position and the transfer-out position; a transfer-in position is provided corresponding to the transfer-in position. The manipulator 22 and the material transfer and moving device 24 transfer the deflection corrector 21 to the transfer-in position, and the transfer-in manipulator 22 is used to transfer the battery cover 92 from the feeding device to the deflection correction storage groove 2110; the corresponding detection position is provided with a deflection correction visual detection device 25, and the material transfer and moving device 24 transfers the deflection corrector 21 to the detection position, and the material transfer and moving device 24 is used to detect the circumferential position deviation of the battery cover 92, and according to the circumferential position deviation of the battery cover 92, the rotary driver 212 drives the deflection correction seat 211 to rotate until the circumferential position of the battery cover 92 is at a preset position; the loading manipulator 23 and the material transfer and moving device 24 transfers the deflection corrector 21 to the transfer-out position, and the loading manipulator 23 is used to transfer the battery cover 92 from the deflection corrector 21 to the positioning tool 1.

[0028] Traditional positioning tooling can be equipped with a slot that is adapted to the shape of the material's outer edge contour to ensure the material's positioning posture. However, if the material's outer edge contour is a rotationally symmetrical structure, such as a circular material, the slot cannot be used to ensure the material's circumferential position. Therefore, an angle corrector is required to correct the material's circumferential position. The existing angle corrector places the material on a turntable, detects the material's angle deviation, and then drives the material to rotate. However, when the material is light and the contact surface with the turntable is smooth, the synchronization of the material and the turntable cannot be guaranteed.

[0029] Based on the above device, after the battery cover 92 enters the correction storage groove 2110, the correction suction cup welding device 4 placed at the bottom of the correction storage groove 2110 sucks the battery cover 92 to ensure the synchronization of the rotation of the battery cover 92 and the correction seat 211.

[0030] In this embodiment, the corrector 21 also includes a mounting frame connected to the movable component of the material transfer and moving device 24, and the rotary driver 212 is installed on the mounting frame. The mounting frame includes a horizontal plate 213, and a group of vertical shaft sleeves 214 are installed on the horizontal plate 213. The correcting seat 211 includes a seat body 2111 and a rotating shaft 2112 arranged at the bottom of the seat body 2111. The seat body 2111 is arranged at the upper end of the shaft sleeve 214, and the rotating shaft 2112 is rotatably arranged in the shaft sleeve 214. The rotating shaft 2112 passes through the horizontal plate 213, and the rotating shaft 2112 is connected to the rotary driver 212 in transmission. A diversion cavity is provided in the seat body 2111, and the rotating shaft 2112 is a tubular body. The tubular cavity of the rotating shaft 2112 is connected to the diversion cavity, and a group of positioning blocks 2113 are installed at the upper end of the seat body 2111, and the positioning blocks 2113 are connected to the diversion cavity.

[0031] The shaft sleeve 214 is used to limit the axial and radial position of the deviation correction seat 211. In one embodiment, a bearing can be provided between the shaft sleeve 214 and the deviation correction seat 211 to reduce friction during rotation. In this embodiment, the feeding device is used to transport the battery cover plate 92 to the material taking position of the transfer manipulator 22. The feeding device is the same as the feeder 7.

[0032] In this embodiment, a positioning block 2113 is installed on the base body 2111, and the correction receiving groove 2110 is arranged at the upper end of the positioning block 2113. The opening edge positioning block 2113 corresponding to the upper end of the correction receiving groove 2110 is provided with a circumferentially extending positioning slope 21130, and the radial dimension of the positioning slope 21130 decreases from top to bottom; the execution end of the transfer robot 22 is provided with a transfer vacuum suction head 222 and a conical platform 221 adapted to the positioning slope 21130, the transfer vacuum suction head 222 is penetrated on the conical platform 221, and the front end of the transfer vacuum suction head 222 extends out of the lower end surface of the conical platform 221.

[0033] Among them, the vacuum suction head 222 is used to pick up and place the battery cover 92. During the process of transferring the battery cover 92 between the manipulator 22 and the deviation corrector 21, the execution end of the manipulator 22 moves to the conical table 221 and engages with the positioning slope 21130, and then the vacuum suction head 222 puts down the battery cover 92, thereby ensuring the stability of the transfer of the battery cover 92.

[0034] In this embodiment, the deflection corrector 21 and the material transfer mobile device 24 are arranged in pairs, and also include a pair of deflection correction detection mobile modules 26. The deflection correction visual detection device 25 is installed on the mobile component of the deflection correction detection mobile module 26. The deflection correction detection mobile module 26 is used to drive the deflection correction visual detection device 25 to move to switch between the detection positions corresponding to a pair of deflection correctors 21; the loading robot 23 includes a loading mobile module 231 and a loading vacuum suction cup 232 installed on the mobile component of the loading mobile module 231. The loading vacuum suction cup 232 is used to pick up and place the battery cover 92. The loading mobile module 231 is used to drive the loading vacuum suction cup 232 to move.

[0035] Based on the above device, when one deviation corrector 21 reaches the detection position for detection and adjusts the circumferential position, the other deviation corrector 21 can be moved to the transfer-out position and the transfer-in position to perform loading operations and transfer operations of the battery cover 92. A pair of deviation correctors 21 operate alternately, which can improve the loading efficiency of the battery cover 92 while saving costs.

[0036] In this embodiment, the number of the correcting seats 211, the number of the transferred vacuum suction heads 222, and the number of the loading vacuum suction cups 232 in each corrector 21 are the same as the number of the placement slots 11 in each positioning fixture 1 and the positions correspond one to one. The correcting detection moving module 26 is a linear moving module, and a pair of correcting detection moving modules 26 are arranged horizontally perpendicular to the moving direction. The loading moving module 231 includes a horizontal moving module and a vertical moving module installed on the moving component of the horizontal moving module. The loading vacuum suction cup 232 is installed on the moving component of the vertical moving module. The horizontal moving module is used to move the loading vacuum suction cup 232 to switch between the transfer position of each corrector 21 and the loading position above the positioning fixture 1. The vertical moving module is used to move the loading vacuum suction cup 232 in the vertical direction to transfer the battery cover 92 to a suitable height.

[0037] The tray transfer device is used to centrally transfer materials on the tray to achieve tray loading or separate materials from the tray. The main function of the tray transfer device is to continuously convey and recycle the tray, and the material transfer process is completed by an external robot at the intermediate workstation. The robot used to pick up and place materials and the robot used to pick up and place trays are moved by independent moving devices. This results in a low degree of integration of the tray transfer device, which affects the equipment cost.

[0038] Combined with this Figures 19 to 24 As shown, in this embodiment, a tray conveying device 8 is also included, and the tray conveying device 8 includes: The first conveyor belt tray feeder 81 is used to transport the tray horizontally from the outside to the inside; the lifting conveyor 82 is arranged at the end of the input direction of the first conveyor belt tray feeder 81, and the lifting conveyor 82 is used to transport the tray transported to the end by the first conveyor belt tray feeder 81 upward; the transfer device 83, the transfer device 83 includes a transfer movement module 831, a tray picking device 832 and a material picking device 833, the tray picking device 832 and the material picking device 833 are installed on the moving component of the transfer movement module 831, the transfer movement module 831 is used to transfer the material picking device 833 to switch between the end position of the tray transported by the lifting conveyor 82 and the material transfer position, so as to transfer the material out of or into the tray through the material picking device 833; the transfer movement module 831 is used to transfer The material tray picking device 832 is switched between the terminal position where the material tray is transported by the lifting conveyor 82 and the transfer position of the material tray, so as to transfer the material tray to the material tray transfer position through the material tray picking device 832; the stacking device 84 includes a second conveyor belt tray feeder 841, a top tray device 842 and a closing tray bin 843, the material tray transfer position corresponds to the input end of the second conveyor belt tray feeder 841, the top tray device 842 is arranged below the output end of the second conveyor belt tray feeder 841, the top tray device 842 includes a lifting and moving push plate 8421, the push plate 8421 is used to push the material tray on the output end of the second conveyor belt tray feeder 841 upward into the closing tray bin 843, and a one-way stopper 844 is provided at the lower end opening position of the closing tray bin 843, and the one-way stopper 844 is used to hold the material tray entering the closing tray bin 843; In this embodiment, the tray conveying device 8 is used to convey the battery cover 92 to the battery cover feeding device 2 or to receive the product 9 output by the unloading device 5. Specifically, the battery cover 92 or the product 9 is transferred between the tray conveying device 8 and the battery cover feeding device 2, and between the unloading device 5 and the tray conveying device 8 through the conveyor 7.

[0039] Based on the above device, its usage method is that the material tray enters from the first conveyor belt tray feeder 81 and is transported horizontally to the end, and then transported upward by the lifting conveyor 82, the transfer moving module 831 drives the material picking device 833, and after the material is transferred by the material picking device 833, the transfer moving module 831 drives the material tray picking device 832 to transport the material tray that has completed the material transfer to the material tray transfer position, that is, the input end of the second conveyor belt tray feeder 841, the second conveyor belt tray feeder 841 transports the material tray to the top of the top tray device 842, the top tray device 842 pushes the material tray upward into the closing bin 843, the one-way stopper 844 is used to support the material tray, after the cycle operation, the material trays will be stacked in the closing bin 843 to facilitate the centralized discharge of the material trays. In this embodiment, the tray picking device 832 and the material picking device 833 are integrated on the same second conveyor belt tray feeder 841, which has the advantage of high integration and can be applied to both the unloading scene of loading materials into the tray and the feeding scene of separating materials from the tray and conveying them to a preset position, and has the advantage of good versatility. The tray picking device 832 and the material picking device 833 both achieve the picking and placing target through vacuum suction cups, and the tray closing bin 843 includes four longitudinally extending right-angle limit plates corresponding to the four corners of the tray.

[0040] In this embodiment, the first conveyor belt feeder 81 includes a pair of first conveyor belts 811 arranged at intervals in the width direction, and the lifting conveyor 82 includes a lifting frame 821 that is movable up and down, and the lifting frame 821 is arranged between the pair of first conveyor belts 811; a material plate positioning device is provided at the end position corresponding to the upward movement of the lifting frame 821, and the material plate positioning device includes a group of clamping blocks 85 corresponding to the edge of the material plate, and the clamping blocks 85 are driven by a horizontal driving device to clamp the edge of the material plate to achieve positioning of the material plate, so as to ensure the accuracy of the positioning of the material plate by the transfer device 83.

[0041] In this embodiment, the plate positioning device further includes a limiting frame 86, a group of clamping blocks 85 includes a first clamping block 851 arranged opposite to the limiting frame 86; a group of clamping blocks 85 also includes a pair of second clamping blocks 852, and the pair of second clamping blocks 852 are arranged opposite to each other in a direction perpendicular to the moving direction of the first clamping block 851. The limiting frame 86 and the first clamping block 851 are used to clamp a pair of opposite sides of the material tray, and the pair of second clamping blocks 852 are used to clamp another pair of opposite sides of the material tray.

[0042] In this embodiment, a material spacing and limiting device is also included, which includes a material spacing plate 87 driven up and down by a driver. When resetting, the material spacing plate 87 is set below the conveyor belt corresponding to the first conveyor belt tray feeder 81 and / or the second conveyor belt tray feeder 841. When working, the material spacing plate 87 moves to extend from the upper end of the conveyor belt to block the material tray, preventing the rear material tray from entering the position of the front material tray during the lifting of the front material tray, resulting in interference when the lifting conveyor 82 or the top tray device 842 is reset downward. Based on the above device, the first conveyor belt tray feeder 81 and the second conveyor belt tray feeder 841 do not need to stop driving the conveyor belt, which has the advantage of simple control compared to stopping the conveyor belt during each lifting process.

[0043] In this embodiment, the transfer moving module 831 includes a first transverse moving module 8311, a second transverse moving module 8312 and a pair of longitudinal moving modules 8313, the moving direction of the first transverse moving module 8311 is parallel to the moving direction of the second conveyor belt feeder 841, the second transverse moving module 8312 is installed on the moving component of the first transverse moving module 8311, the moving direction of the second transverse moving module 8312 is perpendicular to the moving direction of the first transverse moving module 8311, a pair of longitudinal moving modules 8313 are installed on the moving component of the second transverse moving module 8312, and the material tray picking device 832 and the material picking device 833 are respectively arranged on the moving components of the pair of longitudinal moving modules 8313 and are arranged at intervals in the moving direction of the first transverse moving module 8311. Based on the above device, it has the advantage of compact structure.

[0044] Combination Fig.24 As shown, in this embodiment, the one-way stopper 844 includes a mounting frame 8441 arranged at the bottom of the closing bin 843 and a locking tongue 8442 rotatably mounted on the mounting frame 8441, and also includes a pair of blocking blocks for blocking the locking tongue 8442 from rotating in both positive and negative directions; the locking tongue 8442 is threadedly connected with an adjusting screw 8443, and the screw head of the adjusting screw 8443 is exposed on the end face of the locking tongue 8442. When the locking tongue 8442 rotates in the direction of opening the feed inlet of the closing bin 843, the adjusting screw 8443 contacts the corresponding blocking block to limit the locking tongue 8442 from continuing to rotate. The blocking block is used to prevent the locking tongue 8442 from rotating too far, and the adjusting screw 8443 is used to adjust the rotation stroke of the locking tongue 8442 in the direction of opening the feed inlet of the closing bin 843. The blocking block includes a convex portion 84411 integrally arranged on the mounting frame 8441 and a limit block 8444 separately arranged at the lower end of the mounting frame 8441.

[0045] The technical principles of the present invention are described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without creative work, and these methods will fall within the scope of protection of the present invention.

Claims

1. A circular battery cover explosion-proof plate welding equipment, characterized in that: A product (9) is formed by welding an explosion-proof plate (91) to a battery cover plate (92), wherein the battery cover plate (92) is provided with an embedding groove (921) adapted to the explosion-proof plate (91), and a perforation is provided at the bottom of the embedding groove (921), comprising: A positioning tool (1), wherein the positioning tool (1) is provided with a placement groove (11) adapted to the shape of the battery cover, a plurality of vacuum suction holes (110) are provided at the bottom of the placement groove (11), and at least one vacuum suction hole (110) is located directly opposite to the embedding groove (921); A group of workstations, wherein the workstations sequentially include a first loading workstation, a second loading workstation, a welding workstation and a unloading workstation in a circumferential array; A transfer device, the transfer device is used to transfer the positioning tool (1) to each work station in a circular manner; A battery cover plate feeding device (2) located at the first loading station, the battery cover plate feeding device (2) being used to convey the battery cover plate (92) to the placement groove (11); A bursting piece feeding device (3) located at the second loading station, the bursting piece feeding device (3) being used to convey the bursting piece (91) onto the battery cover plate (92); A welding device (4) located at the welding station, the welding device (4) being used to weld the explosion-proof disk (91) to the battery cover plate (92); A material unloading device (5) is located at the unloading station, and is used to transfer the battery cover plate (92) after welding out of the positioning tool (1).

2. A circular battery cover explosion-proof plate welding device according to claim 1, characterized in that: The transfer device comprises a rotatably driven turntable (6), a plurality of the positioning fixtures (1) are mounted on the turntable (6) in a circular array, a group of workstations are arranged around the rotation center circumference of the turntable (6), a group of workstations are located radially outside the turntable (6), and the number of the positioning fixtures (1) corresponds to the number of workstations; On the positioning fixture (1), the placement slots (11) are arranged in a plurality of groups on the positioning fixture (1), and the second loading stations and / or welding stations correspond to the number of groups of the placement slots (11) arranged in a one-to-one manner.

3. A circular battery cover explosion-proof plate welding device according to claim 2, characterized in that: The explosion-proof disk feeding device (3) comprises: A bursting disc feeding manipulator (31), wherein an execution end of the bursting disc feeding manipulator (31) is provided with bursting disc suction nozzles (311) corresponding one to one with a group of placement slots (11), and an opening of the bursting disc suction nozzles (311) faces downward; A bursting disk visual detection device (32) is provided. The bursting disk visual detection device (32) comprises bursting disk detection cameras (321) corresponding one to one with a group of bursting disk suction nozzles (311). The bursting disk visual detection device (32) is provided with two groups, one of which is located outside the turntable (6) and the lens of the bursting disk detection camera (321) faces upwards; and the other group of bursting disk visual detection devices (32) is located above the positioning tool (1) facing the second loading station and the lens of the bursting disk detection camera (321) faces downwards and faces a group of placement slots (11).

4. A circular battery cover explosion-proof plate welding device according to claim 2, characterized in that: The welding device (4) comprises a welding gun (41), a welding movable module (42) and a welding visual guidance device (43). The welding visual guidance device (43) is used to locate the center position of the explosion-proof plate (91) to determine an actual welding trajectory. The welding movable module (42) is used to drive the welding gun (41) to move according to the welding trajectory to complete the welding action.

5. A circular battery cover explosion-proof plate welding device according to claim 2, characterized in that: It also includes a product visual inspection device (93), which is used to inspect the quality of the product (9); The unloading device (5) comprises: A material unloading robot (51), wherein the material unloading robot (51) is provided with a material unloading suction nozzle (511) corresponding one-to-one to the product (9) in the positioning tool (1); A temporary storage compensation device (52), the temporary storage compensation device (52) comprising a group of storage seats (521), the storage seats (521) being provided with temporary storage storage slots (520) adapted to the products (9), the number of the storage seats (521) being one less than the number of the placement slots (11) on each positioning fixture (1); It also includes a feeder (7), wherein a transfer plate (71) is provided on a moving component on the feeder (7), and a feeder receiving groove (710) corresponding to each unloading suction nozzle (511) is provided on the transfer plate (71), and the feeder receiving groove (710) is used to receive the product (9).

6. A circular battery cover explosion-proof plate welding device according to claim 2, characterized in that: The battery cover feeding device (2) comprises: A deflection corrector (21), the deflection corrector (21) comprising a set of deflection correcting seats (211) and a rotary driver (212) corresponding to the deflection correcting seats (211), the deflection correcting seats (211) being provided with a deflection correcting storage groove (2110) adapted to the battery cover plate (92), the deflection correcting storage groove (2110) being provided with a deflection correcting suction cup (2114) at the bottom thereof, the deflection correcting suction cup (2114) being used for adsorbing the battery cover plate (92) placed in the deflection correcting storage groove (2110); The rotary driver (212) is in driving connection with the deviation correcting seat (211); A material transfer moving device (24), wherein the deflection corrector (21) is arranged on a movable component of the material transfer moving device (24), and the material transfer moving device (24) is used to transfer the deflection corrector (21) to switch between a transfer-in position, a detection position, and a transfer-out position; A transfer-in robot (22) is provided at the corresponding transfer-in position, and the transfer-in robot (22) is used to transfer the battery cover plate (92) to the deviation-correcting storage groove (2110); A deviation correction visual detection device (25) is provided at the corresponding detection position. A loading robot (23), wherein the loading robot (23) is used to transfer the battery cover plate (92) from the deviation corrector (21) to the positioning tool (1).

7. A circular battery cover explosion-proof plate welding device according to claim 6, characterized in that: The deflection corrector (21) further comprises a mounting frame connected to a movable component of the material transfer and moving device (24); the rotary driver (212) is mounted on the mounting frame; the mounting frame comprises a horizontal plate (213); a group of vertical shaft sleeves (214) are mounted on the horizontal plate (213); the deflection corrector seat (211) comprises a seat body (2111) and a rotating shaft (2112) arranged at the bottom of the seat body (2111); the seat body (2111) is arranged on the shaft sleeves (214); ), a rotating shaft (2112) is rotatably arranged in a shaft sleeve (214), the rotating shaft (2112) is passed through the horizontal plate (213), the rotating shaft (2112) is drivingly connected to the rotary driver (212), a shunt cavity is arranged in the seat body (2111), the rotating shaft (2112) is in the form of a tube, the tube cavity of the rotating shaft (2112) is in communication with the shunt cavity, a group of positioning blocks (2113) are installed at the upper end of the seat body (2111), and the positioning blocks (2113) are in communication with the shunt cavity.

8. A circular battery cover explosion-proof plate welding device according to claim 7, characterized in that: A positioning block (2113) is installed on the seat body (2111), the deviation-correcting storage groove (2110) is arranged at the upper end of the positioning block (2113), and a circumferentially extending positioning slope (21130) is arranged on the positioning block (2113) corresponding to the opening edge of the upper end of the deviation-correcting storage groove (2110), and the radial dimension of the positioning slope (21130) decreases from top to bottom; An entry vacuum suction head (222) and a conical platform (221) adapted to the positioning slope (21130) are provided on the execution end of the entry robot (22); the entry vacuum suction head (222) is inserted through the conical platform (221), and the front end of the entry vacuum suction head (222) extends out of the lower end surface of the conical platform (221).

9. A circular battery cover explosion-proof plate welding device according to claim 6, characterized in that: The deflection corrector (21) and the material transfer moving device (24) are arranged in pairs, and further include a pair of deflection correcting detection moving modules (26). The deflection correcting visual detection device (25) is mounted on a moving component of the deflection correcting detection moving module (26). The deflection correcting detection moving module (26) is used to drive the deflection correcting visual detection device (25) to move so as to switch between detection positions corresponding to the pair of deflection correctors (21); The loading robot (23) comprises a loading moving module (231) and a loading vacuum suction cup (232) mounted on a moving component of the loading moving module (231); the loading vacuum suction cup (232) is used to take and place the battery cover plate (92); and the loading moving module (231) is used to drive the loading vacuum suction cup (232) to move.

10. The circular battery cover explosion-proof plate welding equipment according to claim 1, characterized in that: It also includes a tray conveying device (8), the tray conveying device (8) comprising: A first conveyor belt tray feeder (81) is used to transport the tray horizontally from the outside to the inside; A lifting conveyor (82), the lifting conveyor (82) is arranged at the end of the input direction of the first conveyor belt tray feeder (81), and the lifting conveyor (82) is used to transport the material tray conveyed to the end by the first conveyor belt tray feeder (81) upwards; A transfer device (83), the transfer device (83) comprising a transfer moving module (831), a tray picking device (832) and a material picking device (833), the tray picking device (832) and the material picking device (833) being mounted on a moving component of the transfer moving module (831), the transfer moving module (831) being used to transfer the material picking device (833) to switch between its end position for conveying the tray by the lifting conveyor (82) and a material transfer position, so that the tray can be transferred out or transferred in by the material picking device (833); the transfer moving module (831) being used to transfer the tray picking device (832) to switch between its end position for conveying the tray by the lifting conveyor (82) and a tray transfer position, so that the tray can be transferred to the tray transfer position by the tray picking device (832); The stacking device (84) comprises a second conveyor belt tray feeder (841), a tray pusher device (842) and a tray closing bin (843); the tray transfer position corresponds to the input end of the second conveyor belt tray feeder (841); the tray pusher device (842) is arranged below the output end of the second conveyor belt tray feeder (841); the tray pusher device (842) comprises a lifting and moving push plate (8421); the push plate (8421) is used to push the tray on the output end of the second conveyor belt tray feeder (841) upward into the tray closing bin (843); a one-way stopper (844) is provided at the lower opening of the tray closing bin (843); the one-way stopper (844) is used to hold the tray entering the tray closing bin (843); The tray conveying device (8) is used to convey the battery cover plate (92) to the battery cover plate feeding device (2) or to receive the product output by the unloading device (5).

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