CN108714574B - Automatic sorting equipment of cylinder lithium cell - Google Patents

Abstract

The invention relates to the field of lithium battery processing, in particular to automatic sorting equipment for cylindrical lithium batteries. The automatic sorting equipment for the cylindrical lithium batteries comprises a rack, and a feeding mechanism, a conveying mechanism, a polarity sorting mechanism, a sorting manipulator mechanism, a material box and two groups of OCV testing mechanisms which are arranged on the rack; the equipment is divided into two paths for sorting based on a polarity detection structure, and the function of polarity detection sorting is added in the traditional sorting equipment; meanwhile, the method is different from the scheme of outputting the steering cylindrical lithium battery in the background technology, and has the advantages of reliable quality, low retest rate, effective improvement of the detection efficiency of the lithium battery and guarantee of the product quality.

Description

Automatic sorting equipment for cylindrical lithium batteries

technical field

The invention relates to the field of lithium battery processing, in particular to automatic sorting equipment for cylindrical lithium batteries.

Background technique

With the increasing use of lithium batteries in people's lives, the forms of lithium batteries are also becoming more and more diverse. During the production and processing of lithium batteries, it is necessary to sort and arrange the lithium batteries, and then conduct electricity through the arranged battery packs. Check the properties of the cells to sort the cells. Among them, the 18650 battery is a typical cylindrical lithium battery, and it is also the most commonly used cylindrical lithium battery in people's lives. At present, 18650 cylindrical cell products must be tested for voltage and internal resistance before production in order to make a reasonable group matching. Only when the voltage value and internal resistance value are close can they be matched for processing. In the past, the 18650 sorting machine It is based on people-oriented, equipment-assisted operation, manual feeding for product sorting, and each group of cells needs to be manually boxed and transported to the production line after testing and sorting, and then paste DuPont paper. Manually identify the positive and negative electrodes and put them into the spot welding fixture for spot welding, which requires about 4 people to complete. Manual operation is required for many parts, and the production capacity is low. The comprehensive production capacity is about 1000 pieces/H.

On this basis, the prior art is improved. For example, a Chinese utility model patent with publication number "CN203565387U" discloses an online cylindrical cell sorting machine. The sorting machine includes a polarity conversion mechanism. A set of polarity selection mechanism is added to select the polarity of the battery cells, which is controlled by the host computer, and the polarity direction can be changed, that is, when the host computer sets the positive and negative poles to be arranged in a cross, the mechanism will follow the sequence after receiving the battery cells. Put down one cell clockwise, put down another cell counterclockwise, and so on. In this scheme, the polarity of the cylindrical cells conveyed by the sorting machine is identified, and the cylindrical cells that do not meet the set direction are turned and sent to the next station; in this regard, although this scheme has the ability to carry out polarity identification during sorting The function of identification, but its sorting efficiency is low, and it is in urgent need of improvement.

SUMMARY OF THE INVENTION

In order to solve the above problems, the purpose of the present invention is to provide an automatic sorting equipment for cylindrical lithium batteries. At the same time, it is different from the scheme of turning and outputting cylindrical lithium batteries in the background art, and has the advantages of reliable quality, low re-inspection rate, effectively improving the detection efficiency of lithium batteries and ensuring product quality.

In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme:

The automatic sorting equipment for cylindrical lithium batteries includes a rack, and a feeding mechanism, a conveying mechanism, a polarity sorting mechanism, a sorting robot mechanism, a material box and two sets of OCV testing mechanisms arranged on the rack; it is characterized in that :

The conveying mechanism includes a first conveying section which is received on the output end of the feeding mechanism, and two second conveying sections which are carried on the end of the first conveying section, and are respectively carried on the end of the two second conveying sections. two third conveying sections; the conveying direction of the first conveying section is parallel to the conveying direction of the third conveying section, and the conveying direction of the first conveying section is perpendicular to the conveying direction of the second conveying section; the two The second conveying sections are respectively arranged on both sides of the first conveying section, and the start end of the second conveying section is below the end part of the first conveying section;

The polarity sorting mechanism includes a polarity detection assembly arranged on the most terminal station of the first conveying section, and a workpiece transfer assembly received on the end of the first conveying section; the workpiece transfer assembly includes a transfer frame, and a sorting valve arranged in the transfer rack, two transfer channels arranged below the transfer rack, and two transfer cylinders respectively arranged on the two moving channels; the two transfer channels are arranged parallel to the On the upstream and downstream sides, the two second conveying sections are respectively carried on the end parts of the two transfer channels; the transfer rack is provided with a channel inside, and the channel is in an inverted Y shape, including the inlet channel section and the inlet channel section. The two outlet channel sections are respectively guided to the two transfer channels; the two outlet channel sections are provided with a first sensor, and the first sensor is used to sense and detect the cylindrical lithium battery passing through the outlet channel section; and The two transfer cylinders are respectively triggered by the signals of the two first sensors; the sorting valve includes a valve plate hinged at the intersection of the inlet channel section and the two outlet channel sections, and a sorting valve that drives the valve plate to rotate motor; the sorting motor controls the movement of the valve plate based on the detection result of the polarity detection component, so that the valve plate selectively closes the inlet of one of the outlet channel segments.

Preferably, the polarity detection assembly includes a movable electrode seat disposed on both sides of the first conveying section, a polarity detection cylinder and a return spring that drive the movable electrode seat to be relatively close to or away from the movable electrode seat, and a polarity detection cylinder and a return spring that drive the movable electrode seat relatively close to or away from the movable electrode seat. The connected detectors; the movable electrode seats are all movably arranged on the same optical axis, and the two movable electrode seats located between the upper conveying surface and the lower conveying surface of the first conveying section are connected by a return spring, and reset A spring is used to make the two movable electrode bases approach each other; and the opposite surfaces of the two movable electrode bases are in the shape of inclined planes; and the output direction of the polarity detection cylinder is parallel to the feeding direction of the first conveying section, and the polarity detection A wedge-shaped block is connected to the output end of the cylinder, and the wedge-shaped block is in contact with the inclined surface of the movable electrode seat.

Preferably, the two groups of OCV testing mechanisms are respectively arranged on two third conveying sections, the end of the conveying surface of the third conveying section is provided with a baffle, and the OCV testing mechanism is located upstream of the baffle; the OCV testing mechanism includes a The charge and discharge bases on both sides of the third conveying section, and the OCV test unit for collecting the OCV parameters of the cylindrical lithium battery to be tested; the charge and discharge bases include a fixed base plate, and are movably arranged on the fixed base plate The movable base plate, and a plurality of charging and discharging units arranged on the movable base plate; the fixed base plate is provided with a sliding rail, the movable base plate is arranged on the sliding rail, and the movable base plate is fixed with a sliding rail. A driving cylinder is used, and the output end of the driving cylinder is connected to the fixed base plate; the plurality of charging and discharging units are regularly distributed at equal intervals along the conveying direction of the third conveying section.

Preferably, the sorting manipulator mechanism includes a sorting rack fixed on the frame between the two third conveying sections, a sorting mobile pair movably arranged on the sorting rack, and a sorting mobile pair arranged on the sorting rack The sorting lifting pair on the sorting lifting pair, and a plurality of sorting grabbing pairs arranged on the sorting lifting amplitude; the sorting lifting pair includes a base plate fixed on the sorting moving pair, and a lifting cylinder fixed on the base plate, and a gripper frame connected to the output end of the lifting cylinder; the lifting cylinder drives the gripper frame to move longitudinally to achieve lowering and lifting; the lower end surface of the gripper frame is provided with a plurality of gripping grooves side by side, and the gripping grooves There is a through hole inside; a plurality of sorting and grabbing pairs are arranged on the hand frame and correspond to a plurality of grabbing grooves; the sorting and grabbing pairs include a grabbing cylinder fixed above the grabbing groove, and a Grab the magnetic plate on the output end of the air cylinder, and the grabbing cylinder drives the magnetic plate to extend into or out of the grab groove.

Preferably, the sorting manipulator mechanism further includes a grasping and lifting assembly disposed below the third conveying section, the grasping and lifting assembly includes a lifting cylinder, and a lifting frame connected to the output end of the lifting cylinder, the lifting frame includes a third The lifting plates on both sides of the conveying section are provided with a plurality of grabbing auxiliary grooves adapted to the grabbing grooves.

Preferably, the feeding mechanism includes a material box frame, a drawer box arranged in the material box frame, and an output assembly arranged in the material box frame below the drawer box; the inside of the drawer box is provided with A first material guide plate, the first material guide plate is inclined downward, and a first material guide port is arranged between the inclined lower end of the first material guide plate and the drawing box; the material box frame below the first material guide port A second material guide plate is arranged inside, and the second material guide plate is inclined downward; the output assembly includes a first toggle wheel, and a first toggle wheel motor that drives the first toggle wheel to rotate; the first toggle wheel The motor can drive the first toggle wheel to rotate through conventional methods such as belts and gears; the first toggle wheel is supported on the output end of the second guide plate, and the peripheral outer side of the first toggle wheel is provided with a plurality of toggle slot.

Preferably, the start end of the third conveying section is lower than the end of the second conveying section, and is provided with an inclined surface for the connection; the end of the second conveying section is provided with a second toggle wheel, and the drive The second dial motor is rotated by the second dial wheel; the axis of the second dial wheel is parallel to the conveying direction of the second conveying section, and the peripheral outer side of the second dial wheel is regularly provided with multiple a toggle slot; the second conveying section is provided with a second sensor for detecting that the cylindrical lithium battery completely enters the toggle slot, and the second sensor can be arranged at the slot downstream of the toggle slot, when the front end of the cylindrical lithium battery When the second sensor is touched, it indicates that the cylindrical lithium battery completely enters the toggle slot, and then the second toggle wheel rotates by a toggle angle to transport the cylindrical lithium battery to the inclined surface and then fall into the third conveying section.

The present invention adopts the above technical solution, and the technical solution relates to an automatic sorting equipment for cylindrical lithium batteries. The automatic sorting equipment for cylindrical lithium batteries includes a frame, and a feeding mechanism, a conveying mechanism, a pole and a Sex sorting mechanism, sorting manipulator mechanism, material box and two sets of OCV testing mechanisms. Wherein, the polarity sorting mechanism includes a polarity detection assembly arranged on the most terminal station of the first conveying section, and a workpiece transfer assembly received on the end of the first conveying section; the workpiece transfer assembly is based on the polarity detection assembly. The detection structure selectively conveys the cylindrical lithium battery to one of the second conveying sections. Specifically, when the workpiece transfer assembly is working, the cylindrical lithium battery is transported to the detection station at the end by the first conveying section, and the cylindrical lithium battery is detected and judged by the polarity detection assembly to determine the positive and negative directions of the cylindrical lithium battery, and then conveyed. to the workpiece transfer unit. The sorting motor in the workpiece transfer assembly controls the movement of the valve plate based on the detection result of the polarity detection assembly, and closes one of the outlet passage sections. When the polarity-tested cylindrical lithium battery is sent into the transfer channel of the transfer rack, it passes through the designated outlet channel section and falls into the designated transfer channel under the action of gravity, and then the corresponding transfer cylinder triggers the drive to send the cylindrical lithium battery into the transfer frame. on the corresponding second conveying section. Therefore, based on the polarity detection structure, the device is divided into two channels for sorting, and the function of polarity detection and sorting is added to the traditional sorting device; at the same time, it is different from the scheme of turning the cylindrical lithium battery and outputting it in the background art. , has the advantages of reliable quality, low re-inspection rate, effectively improving the detection efficiency of lithium batteries and ensuring product quality.

Description of drawings

FIG. 1 is a schematic three-dimensional structure diagram of a sorting equipment for cylindrical lithium batteries.

FIG. 2 is a schematic view of the top surface structure of a sorting device for cylindrical lithium batteries.

Figure 3 is a schematic structural diagram of the feeding mechanism.

FIG. 4 is a schematic diagram 1 of the structure of the polarity detection assembly.

FIG. 5 is a second structural schematic diagram of the polarity detection assembly.

FIG. 6 is a schematic structural diagram of the workpiece transfer assembly.

FIG. 7 is a schematic structural diagram of the second conveying section.

FIG. 8 is a schematic diagram of the top structure of the OCV testing mechanism.

FIG. 9 is a schematic three-dimensional structure diagram of an OCV testing mechanism.

FIG. 10 is a schematic side view of the structure of the OCV testing mechanism.

FIG. 11 is a schematic structural diagram of a sorting manipulator mechanism.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inside", " The orientation or positional relationship indicated by "outside" is based on the orientation or positional relationship described in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, so as to The specific orientation configuration and operation are therefore not to be construed as limitations of the present invention.

As shown in Figures 1 to 11, a sorting equipment for cylindrical lithium batteries includes a rack 1, and a feeding mechanism 2, a conveying mechanism, a polarity sorting mechanism, and a sorting manipulator mechanism 4 arranged on the rack 1. , a material box 6 and two sets of OCV testing institutions 5.

The feeding mechanism 2 includes a magazine rack 21 , a drawer box 22 arranged in the magazine rack 21 , and an output assembly arranged in the magazine rack 21 below the puller box 22 . The inside of the drawer box 22 is provided with a first material guide plate 23 , the first material guide plate 23 is inclined downward, and a first material guide plate is arranged between the inclined lower end of the first material guide plate 23 and the drawer box 22 . mouth 24. A second material guide plate 25 is arranged in the material box frame 21 below the first material guide port 24 , and the second material guide plate 25 is also inclined downward, but the second material guide plate 25 and the first material guide plate 23 The inclination directions are different, so when the cylindrical lithium battery rolls from the first guide plate 23 to the second guide plate 25, the kinetic energy accumulated on the first guide plate 23 will be consumed, and the buffering effect will be activated. The output assembly includes a first toggle wheel 26 and a first toggle wheel motor 27 that drives the first toggle wheel 26 to rotate. The first toggle motor 27 can drive the first toggle wheel 26 to rotate through conventional methods such as belts and gears. The first toggle wheel 26 is supported on the output end of the second material guide plate 25 , and a plurality of toggle grooves are provided on the peripheral outer side of the first toggle wheel 26 . After the cylindrical lithium battery is filled into the pull-out box 22, the cylindrical lithium battery is guided by the first material guide plate 23 and the second material guide plate 25, and accumulates in the second material guide plate 25 and the space above it. During the rotation of the first toggle wheel 26, the cylindrical lithium battery on the output end of the material plate 25 falls into the toggle slot in sequence, and then the first toggle wheel 26 places it into the conveying mechanism.

The conveying mechanism includes a first conveying section 6a received on the output end of the feeding mechanism 2, and two second conveying sections 6b received on the end of the first conveying section 6a, and two second conveying sections 6b respectively received on the two Two third conveying segments 6c on the end of segment 6b. Among them, the conveying direction of the first conveying section 6a is parallel to the conveying direction of the third conveying section 6c, and the conveying direction of the first conveying section 6a is perpendicular to the conveying direction of the second conveying section 6b; The conveying section 6c is conveyed along the radial direction of the cylindrical lithium battery, and the second conveying section 6b is conveyed along the axial direction of the cylindrical lithium battery. Specifically, the first conveying section 6 a includes a first conveying belt 61 positioned on the frame 1 through a rotating shaft, a first conveying motor 62 for driving the first conveying belt 61 , and a first conveying belt 61 disposed on both sides of the first conveying belt 61 the first guide side wall 63. The first conveying motor 62 passes through the belt shaft to drive the first conveying belt 61 to rotate and feed, and the first guiding side wall 63 guides the cylindrical lithium battery on the first conveying belt 61 . The second conveying section 6b includes a second conveying belt 64 positioned on the frame 1 through a rotating shaft, a second conveying motor 65 for driving the second conveying belt 64, and a second conveying belt 64 disposed on both sides of the second conveying belt 64. Guide side wall 66 . The second conveying motor 65 drives the second conveying belt 64 to rotate and feed materials through the belt rotating shaft, and the second guiding side wall 66 guides the cylindrical lithium battery on the second conveying belt 64 . The third conveyor belt includes a third conveyor belt 67 positioned on the frame 1 through a rotating shaft, a third conveyor motor 68 for driving the third conveyor belt 67 , and a third guide provided on both sides of the third conveyor belt 67 . side wall 69. The third conveying motor 68 passes through the belt shaft to drive the third conveying belt 67 to rotate and feed, and the third guiding side wall 69 guides the cylindrical lithium battery on the third conveying belt 67 .

The polarity sorting mechanism includes a polarity detection assembly 3 arranged on the most terminal station of the first conveyor belt 61, and a workpiece transfer assembly 7 received on the end portion of the first conveyor belt 61; the polarity detection The assembly 3 includes a movable electrode seat 31 arranged on both sides of the first conveyor belt 61 , a polarity detection cylinder 32 and a return spring 33 that drive the movable electrode seat 31 relatively close to or away from the movable electrode seat 31 , and the movable electrode seat 31 is in phase with the movable electrode seat 31 . connected detector. Specifically, the movable electrode seats 31 are all movably arranged on the same optical axis 34, and the two movable electrode seats 31 between the upper conveying surface and the lower conveying surface of the first conveyor belt 61 are connected by a return spring 33, The return spring 33 is sleeved on the optical axis between the two movable electrode bases 31 , and the return spring 33 makes the two movable electrode bases 31 approach each other; and the opposite surfaces of the two movable electrode bases 31 are inclined. The output direction of the polarity detection cylinder 32 is parallel to the feeding direction of the first conveyor belt 61 , a wedge block 35 is connected to the output end of the polarity detection cylinder 32 , and the wedge block 35 is in contact with the inclined surface of the movable electrode seat 31 . When the cylindrical lithium battery enters the detection station, the wedge block 35 is withdrawn from between the two movable electrode seats 31, and the two movable electrode seats 31 are relatively close to each other under the action of the return spring 33. Further, the two movable electrode seats 31 and The two poles of the cylindrical lithium battery are in contact, and the detector performs polarity detection (that is, judging the positive and negative directions of the cylindrical lithium battery). After the cylindrical lithium battery is detected, the polarity detection cylinder 32 drives the wedge block 35 to push the wedge block 35 between the two movable electrode seats 31 , and the wedge block 35 expands the distance between the two movable electrode seats 31 At the same time, the elastic force of the return spring 33 is overcome; at this time, the movable electrode holder 31 is separated from the cylindrical lithium battery, and the cylindrical lithium battery can be further transported.

The workpiece transfer assembly 7 is received downstream of the polarity detection assembly 3, and the workpiece transfer assembly includes a transfer rack 71, a sorting valve arranged in the transfer rack 71, and two transfer channels 73 arranged below the transfer rack 71, and Two transfer cylinders 74 are respectively provided on the two moving passages. The two second conveying sections are respectively arranged on both sides of the first conveying section, and the start end of the second conveying section is below the end part of the first conveying section. The two transfer passages 73 are arranged in parallel on the upstream and downstream sides of the transfer rack 71, where the upstream and downstream are based on the conveying direction of the first conveying section, and the two second conveying sections are respectively carried on the two conveying passages. on the end of 73. The transfer rack 71 is provided with a channel inside, and the channel is in an inverted Y shape, including an inlet channel section 751, and two outlet channel sections 752 communicated with the inlet channel section 751. The two outlet channel sections 752 are respectively guided to the two transfer channels. channel 73; and the two outlet channel sections 752 are provided with first sensors, the first sensors are used to sense and detect the cylindrical lithium battery passing through the outlet channel section 752; and the two transfer cylinders 74 are respectively connected by two first sensors. signal trigger. The sorting valve includes a valve plate 72 hinged at the intersection of the inlet channel section 751 and the two outlet channel sections 752, and a sorting motor that drives the valve plate 72 to rotate; the sorting motor is based on a polarity detection assembly The detection result controls the movement of the valve plate 72 , so that the valve plate 72 selectively closes the inlet of one of the outlet channel segments 752 . When the above-mentioned workpiece transfer assembly is working, the cylindrical lithium battery is transported to the detection station at the end by the first conveying section, and the positive and negative directions of the cylindrical lithium battery are detected and judged by the polarity detection assembly, and then transported to the workpiece. on the transfer component. The sorting motor in the workpiece transfer assembly controls the movement of the valve plate 72 based on the detection result of the polarity detection assembly, and closes one of the outlet passage sections 752 . When the polarity-detected cylindrical lithium battery is sent into the channel of the transfer rack 71, it passes through the designated outlet channel section 752 and falls into the designated transfer channel 73 under the action of gravity, and then the corresponding transfer cylinder 74 is triggered to drive the cylindrical lithium battery. The battery is fed into the corresponding second conveying section. Based on the above solution, a further preferred solution is to provide a movable baffle 70 between the polarity detection assembly and the workpiece transfer assembly, and the movable baffle can block or release the cylindrical lithium battery on the first conveying section, one of which is On the one hand, it can be used to locate the auxiliary cylindrical lithium battery polarity detection component for work, and on the other hand, it can also control the feeding efficiency of the workpiece transfer component to avoid errors.

The starting end of the third conveying section 6c is lower than the end of the second conveying belt 64, and is provided with an inclined surface 60 for the connection. The end portion of the second conveyor belt 64 is provided with a second toggle wheel 81 and a second toggle wheel motor 82 that drives the second toggle wheel 81 to rotate. The second dial motor 82 can drive the second dial wheel 81 to rotate through conventional methods such as belts, gears, and the like. The axis of the second toggle wheel 81 is parallel to the conveying direction of the second conveyor belt 64 , and a plurality of toggle grooves are regularly arranged on the outer peripheral surface of the second toggle wheel 81 at equal angles. The second conveyor belt 64 is provided with a second sensor for detecting that the cylindrical lithium battery completely enters the toggle slot. The second sensor can be arranged at the notch downstream of the toggle slot. When the front end of the cylindrical lithium battery touches the When the second sensor is used, it indicates that the cylindrical lithium battery completely enters the toggle slot, and then the second toggle wheel 81 rotates by a toggle angle (the toggle angle refers to the center angle between two adjacent toggle slots), and the cylindrical lithium battery It is conveyed onto the inclined surface 60 and then falls into the third conveying section 6c.

The two sets of OCV testing mechanisms 5 are respectively arranged on the two third conveyor belts 67, the end of the conveying surface of the third conveyor belt 67 is provided with a baffle plate, the OCV testing mechanism 5 is located upstream of the baffle plate, and the OCV testing mechanism 5 includes a The charging and discharging bases on both sides of the third conveying section 6c, and the OCV test unit used to collect the OCV parameters of the cylindrical lithium battery to be tested. The charging and discharging base includes a fixed base plate 51 , a movable base plate 52 movably arranged on the fixed base plate 51 , and a plurality of charge and discharge units 53 arranged on the movable base plate 52 . The fixed base plate 51 is provided with a slide rail, the movable base plate 52 is arranged on the slide rail, a driving cylinder is fixed on the movable base plate 52 , and the output end of the driving cylinder is connected to the fixed base plate 51 . When the output of the driving cylinder changes, the movable base plate 52 can be driven to move on the slide rail. The plurality of charging and discharging units 53 are regularly distributed at equal intervals along the conveying direction of the third conveying belt 67 . Based on the above structure, when the charging and discharging bases on both sides are relatively close to and contact the end of the cylindrical lithium battery, the OCV test unit collects the OCV parameters of the cylindrical lithium battery to be tested; after the detection is completed, the charging and discharging bases on both sides are relatively far away.

The sorting manipulator mechanism 4 includes a sorting rack 41 fixed on the frame 1 between the two third conveyor belts 67, a sorting moving pair 42 arranged on the sorting rack 41, and The sorting lifting pair on the moving pair 42 and a plurality of sorting grabbing pairs arranged on the sorting lifting amplitude are selected. The sorting moving pair 42 can move along the sorting rack 41 above the OCV testing mechanisms 5 of the two third conveyor belts 67 . The sorting lifting pair includes a base plate 43 fixed on the sorting moving pair 42, a lifting cylinder 44 fixed on the base plate 43, and a gripper frame 45 connected to the output end of the lifting cylinder 44; the lifting cylinder 44 The driving gripper frame 45 is moved longitudinally to achieve the lowering and lifting action. The lower end surface of the gripper frame 45 is provided with a plurality of gripping grooves 451 side by side, and the interior of the gripping grooves 451 is provided with a through hole; The grooves 451 correspond respectively. The sorting and grabbing pair includes a grabbing cylinder 46 fixed above the grabbing groove 451, and a magnetic plate 47 arranged on the output end of the grabbing cylinder 46. The grabbing cylinder 46 drives the magnetic plate 47 to extend into or out of the grabbing Slot 451. In a further preferred solution, the sorting manipulator mechanism 4 further includes a grabbing and lifting assembly disposed under the third conveyor belt 67, the grabbing and lifting assembly includes a lifting cylinder 48, and a lifting frame connected to the output end of the lifting cylinder 48, The lifting frame includes lifting plates 49 on both sides of the third conveyor belt 67 , and the lifting plates 49 are provided with a plurality of grasping auxiliary grooves matching the grasping grooves 451 . The material box 6 is arranged on the frame 1 between the two third conveyor belts 67. The material box 6 includes a first area 61 and a second area 62 arranged left and right, and the first area 61 and the second area 62 are both inside. A plurality of troughs 63 are provided. Based on the above structure, after the OCV testing mechanism 5 completes the detection, the sorting moving pair 42 in the sorting manipulator mechanism 4 moves to the top of the third conveyor belt 67 to grab and lift the assembly, and the lifting cylinder 48 will be in the third position through the lifting frame. The cylindrical lithium battery on the conveyor belt 67 is lifted to a certain height; synchronously, the sorting lifting pair is performed, and the lifting cylinder 44 drives the gripper frame 45 to move longitudinally; until the gripper frame 45 is in contact with the lifting frame. Then, multiple sorting and grabbing pairs start to be executed, the grabbing cylinder 46 drives the magnetic plate 47 to extend into the grabbing groove 451 and absorbs the cylindrical lithium battery; then the grabbing and lifting components and the sorting and lifting pairs are reset to complete the grabbing. After the grasping is completed, the sorting moving pair 42 moves to the top of the corresponding trough in turn. After moving to the top of the specific feeding trough, the sorting lifting pair starts to descend, and then the grasping cylinder 46 in the partial sorting and grasping pair drives the magnet. The plate 47 exits the grab groove 451, the adsorption is cancelled, and the cylindrical lithium battery falls into the material groove. In the above steps, the execution work of the sorting and grabbing pair is based on the detection data of the OCV test mechanism 5, that is, the open circuit voltage of the cylindrical lithium battery is obtained after the OCV test mechanism 5 detects, and then the sorting and grabbing pair only moves to the setting based on the open circuit voltage. When it is above the fixed trough, the sorting and grabbing pair will put down the cylindrical lithium battery. Further, because the number of cylindrical lithium batteries transferred by the sorting manipulator mechanism 4 in a single transfer is relatively large, generally 8 to 15 pieces; it is more efficient than the actuator upstream of the equipment, so the same sorting manipulator is used in this scheme. The mechanism 4 cooperates with two third conveyor belts 67 for sorting. Further, the first area 61 and the second area 62 of the material box 6 are used to correspond to the two third conveyor belts 67 respectively, which is based on two steps of polarity sorting and OCV test sorting. In addition, the material box 6 is also provided with a workpiece transfer belt and a transfer motor for driving the workpiece transfer belt. The workpiece transfer belt can quickly transport the cylindrical lithium battery dropped by the sorting manipulator mechanism 4 to the other end of the material box 6. Accumulation occurs at the blanking place.

The sorting equipment for cylindrical lithium batteries adopts the above structure. The cylindrical lithium batteries are first fed into the feeding mechanism 2, and then enter the conveying mechanism. On the two second conveying sections 6b, the end of the second conveying section 6b is conveyed to the third conveying section 6c by the toggle of the second toggle wheel 81, and is detected by the OCV testing mechanism 5 on the third conveying section 6c, and finally The sorting manipulator mechanism 4 moves the cylindrical lithium battery into the corresponding trough to complete the sorting.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. The equivalent replacement or change of the inventive concept thereof shall be included within the protection scope of the present invention.

Claims (4)

1. The automatic sorting equipment for the cylindrical lithium batteries comprises a rack, and a feeding mechanism, a conveying mechanism, a polarity sorting mechanism, a sorting manipulator mechanism, a material box and two groups of OCV testing mechanisms which are arranged on the rack; the method is characterized in that:

the conveying mechanism comprises a first conveying section, two second conveying sections and two third conveying sections, wherein the first conveying section is connected to the output end of the feeding mechanism in a bearing mode, the two second conveying sections are connected to the tail end of the first conveying section in a bearing mode, and the two third conveying sections are connected to the tail ends of the two second conveying sections in a bearing mode; the conveying direction of the first conveying section is parallel to that of the third conveying section, and the conveying direction of the first conveying section is perpendicular to that of the second conveying section; the two second conveying sections are respectively arranged at two sides of the first conveying section, and the starting ends of the second conveying sections are positioned below the tail end part of the first conveying section;

the polarity sorting mechanism comprises a polarity detection component arranged on the extreme end station of the first conveying section and a workpiece transfer component received on the end part of the first conveying section; the workpiece transferring assembly comprises a transferring frame, a sorting valve arranged in the transferring frame, two transferring channels arranged below the transferring frame, and two transferring cylinders respectively arranged on the two moving channels; the two transfer channels are arranged on the two sides of the upstream and downstream of the transfer frame in parallel, and the two second conveying sections are respectively connected to the tail end parts of the two transfer channels; a channel is arranged in the transfer frame, is in an inverted Y shape and comprises an inlet channel section and two outlet channel sections communicated with the inlet channel section, and the two outlet channel sections are respectively guided to the two transfer channels; the two outlet channel sections are internally provided with first sensors which are used for sensing and detecting that the cylindrical lithium battery passes through the outlet channel sections; the two transfer cylinders are respectively triggered by signals of the two first sensors; the sorting valve comprises a valve plate hinged at the intersection of an inlet channel section and two outlet channel sections and a sorting motor for driving the valve plate to rotate; the sorting motor controls the valve plate to move based on the detection result of the polarity detection assembly, so that the valve plate selectively seals the inlet of one of the outlet channel sections.

2. The automatic sorting apparatus for cylindrical lithium batteries according to claim 1, wherein: the polarity detection assembly comprises movable electrode seats arranged on two sides of the first conveying section, a polarity detection cylinder and a return spring for driving the movable electrode seats to relatively approach or depart from, and a detector connected with the movable electrode seats; the movable electrode holders are movably arranged on the same optical axis, and two movable electrode holders positioned between the upper conveying surface and the lower conveying surface of the first conveying section are connected through a return spring which enables the two movable electrode holders to approach each other; and the opposite surfaces of the two movable electrode seats are in the shape of an inclined plane; the output direction of the polarity detection cylinder is parallel to the feeding direction of the first conveying section, and the output end of the polarity detection cylinder is connected with a wedge-shaped block which is abutted to the inclined surface of the movable electrode seat.

3. The automatic sorting apparatus for cylindrical lithium batteries according to claim 1, wherein: the two groups of OCV testing mechanisms are respectively arranged on the two third conveying sections, the tail ends of the conveying surfaces of the third conveying sections are provided with baffle plates, and the OCV testing mechanisms are positioned at the upstream of the baffle plates; the OCV testing mechanism comprises charge and discharge bases arranged on two sides of the third conveying section and an OCV testing unit used for collecting OCV parameters of the cylindrical lithium battery to be tested; the charging and discharging base comprises a fixed base plate, a movable base plate movably arranged on the fixed base plate, and a plurality of charging and discharging units arranged on the movable base plate; the fixed base plate is provided with a slide rail, the movable base plate is arranged on the slide rail, the movable base plate is fixedly provided with a driving cylinder, and the output end of the driving cylinder is connected to the fixed base plate; the plurality of charging and discharging units are regularly distributed at equal intervals along the conveying direction of the third conveying section.

4. The automatic sorting apparatus for cylindrical lithium batteries according to claim 1, wherein: the sorting manipulator mechanism comprises a sorting frame fixed on the rack between the two third conveying sections, a sorting moving pair movably arranged on the sorting frame, a sorting lifting pair arranged on the sorting moving pair, and a plurality of sorting grabbing pairs arranged on the sorting lifting frame; the sorting lifting pair comprises a base plate fixed on the sorting moving pair, a lifting cylinder fixed on the base plate and a gripper frame connected to the output end of the lifting cylinder; the lifting cylinder drives the gripper frame to move longitudinally to realize the functions of descending and lifting; a plurality of grabbing grooves are arranged on the lower end face of the grabbing hand rack side by side, and through holes are formed in the grabbing grooves; the plurality of sorting and grabbing pairs are arranged on the grabbing hand rack and respectively correspond to the plurality of grabbing grooves; the sorting grabbing pair comprises a grabbing cylinder fixed above the grabbing groove and a magnetic plate arranged on the output end of the grabbing cylinder, and the grabbing cylinder drives the magnetic plate to stretch into or withdraw from the grabbing groove.

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