CN219979621U - stacking device - Google Patents

Abstract

The utility model provides a stacking device, which includes a stacking mechanism, a first loading mechanism that transports a first pole piece to the stacking mechanism, and a second loading mechanism that delivers a second pole piece to the stacking mechanism, and The first loading mechanism and the second loading mechanism are respectively located on both sides of the lamination mechanism in the width direction; the lamination mechanism includes a plurality of lamination tables spaced apart along the length direction, and a lamination robot arranged corresponding to each lamination table. components, each stacking robot component can grab the first pole piece and the second pole piece and transport them to the corresponding stacking table for alternate stacking; both the first loading mechanism and the second loading mechanism include conveying The magnetic levitation conveyor line body of the first pole piece or the second pole piece, and the detection part provided on one side of the magnetic levitation conveyor line body. The detection part can visually locate and detect the first pole piece or the second pole piece grasped by the stacking robot assembly. Extreme attitude. The lamination device of the utility model can have higher lamination efficiency and is highly practical.

Description

stacking device

Technical field

The utility model relates to the technical field of battery manufacturing, and in particular to a stacking device.

Background technique

At present, the production methods of lithium batteries are mainly divided into two methods: winding and lamination. Compared with the winding method, the cells produced by the lamination method have higher energy density and better quality, and the lamination process is called lamination production. The key to the method determines to a large extent the production efficiency and product quality of laminated lithium batteries.

In the thermal composite lamination method, the lamination process is to transport the positive and negative electrode sheets through the vacuum belt. After CCD visual inspection and UVW alignment platform positioning, the positive and negative electrode sheets are placed on the lamination table by a pick-and-place robot. Alternately stack the stacks until the pole group on the stacking table reaches the set number of pole pieces, and the stacking table starts unloading.

In the existing thermal composite lamination method, pick and place robots are usually used for transportation, and the lamination method of CCD vision and UVW alignment positioning is used. The main disadvantage of this lamination solution is that it uses an integrated eight-station stacking table for lamination. , the stacking method is single and requires CCD vision and UVW alignment platforms to position the pole pieces at the same time. The stacking efficiency is low. At the same time, the structure of the stacking equipment is complex and the reserved space for pole piece transfer is small, resulting in handling efficiency and difficulty in maintenance. .

In addition, existing lamination solutions usually use a pair of four-station manipulators and an integrated eight-station stacking table for lamination. Multi-station integrated stacking will cause a high risk of chip dropping, complex logic and complicated chip removal and patching. Problems such as the long time required to kick out scrapped patches lead to a reduction in overall machine efficiency.

Utility model content

In view of this, the present invention aims to provide a lamination device that can achieve higher lamination efficiency.

In order to achieve the above purpose, the technical solution of the present invention is achieved as follows:

A device includes a stacking mechanism, a first loading mechanism that transports a first pole piece to the stacking mechanism, and a second loading mechanism that delivers a second pole piece to the stacking mechanism, and the first loading mechanism The feeding mechanism and the second feeding mechanism are respectively located on both sides of the lamination mechanism in the width direction;

The lamination mechanism includes a plurality of lamination tables spaced apart along the length direction, and a lamination robot assembly arranged corresponding to each of the lamination tables. Each of the lamination robot assemblies is capable of grabbing the first pole piece. and the second pole piece and transport it to the corresponding lamination stage for alternate lamination;

The first loading mechanism and the second loading mechanism both include a magnetic levitation conveying line for conveying the first pole piece or the second pole piece, and are located on one side of the magnetic levitation conveying line. The detection part is capable of visually locating and detecting the posture of the first pole piece or the second pole piece grasped by the stacking robot assembly.

Further, the magnetic levitation conveying line includes a magnetic levitation ring track, and a plurality of mover assemblies that are magnetically levitation and slidingly disposed on the magnetic levitation ring track, and the first pole piece or the first pole piece is placed on each of the mover components. The second pole piece.

Furthermore, the magnetic levitation ring track is provided with a material pickup area close to the lamination mechanism, and a loading area located upstream of the material pickup area, and each of the mover components can be moved at the loading area. The first pole piece or the second pole piece is received and transported to the material picking area for the stacking robot assembly to grab.

Further, the magnetic levitation ring track is provided with a buffer zone between the loading area and the loading area. The buffer area is used to buffer the materials that slide from the loading area to the loading area. Each of the mover components.

Further, the material taking area is provided with material taking stations corresponding to each of the lamination tables, each of the material taking stations can accommodate at least two of the mover assemblies, and each of the laminations Each platform is provided with at least two lamination stations; the lamination robot assembly includes a lamination robot located between the corresponding lamination table and the picking station, and the lamination robot can automatically The first pole piece or the second pole piece on each of the mover assemblies is grabbed at the material retrieval station and placed at each lamination station in the corresponding lamination table. superior.

Furthermore, first CCD camera components for visually positioning the first pole piece or the second pole piece during lamination are respectively provided on both sides of the lamination stage in the width direction.

Further, the detection part includes a second CCD camera assembly respectively provided corresponding to each of the material picking stations.

Further, a waste removal and patching mechanism is provided between the first loading mechanism and the lamination mechanism and between the second loading mechanism and the lamination mechanism. The chip mechanism has a waste material station located on one side of the magnetic levitation ring track, and a scrap removal and patching robot located between the magnetic levitation ring track and the waste material station;

The waste material station is located downstream of the material retrieval area and between the material retrieval area and the loading area. The waste removal and patching robot can grab the NG detected by the detection part. The first pole piece or the second pole piece and placed on the scrap station.

Further, the scrap removal and patching mechanism includes a patching station arranged close to the scrap station, and the scrapping and patching robot can operate between the patching station and one of the mover components. During the period, the qualified first pole piece or the second pole piece detected by the detection unit is transported.

Further, the lamination mechanism includes a moving slide rail extending along the length direction, and a driving part capable of driving each of the stacking stages to reciprocate along the moving slide rail.

Compared with the existing technology, this utility model has the following advantages:

The stacking device of the present invention, based on the grasping flexibility of the stacking robot assembly and the cooperation of the detection part that can position the first pole piece or the second pole piece, can achieve extremely high performance on the basis of having the handling function. Compared with the existing technology that uses a robot and a UVW alignment platform to cooperate with the correction and positioning function, the chip correction and positioning function greatly reduces the width of the stacked segments, thereby reserving enough space for the transfer of the pole pieces, and the first The loading mechanism and the second loading mechanism are both used in conjunction with the magnetic suspension conveyor line, which helps to improve the pole piece transfer efficiency. At the same time, the stacking robot component and the split stacking table design are better than the existing manipulator and The design of the integrated lamination table prevents the lamination processes between each lamination table from interfering with each other, thereby reducing the risk of chip dropping, reducing the logical complexity of scrapping and patching, and reducing the time for scrapping and patching, with better performance The operability is conducive to breaking through the efficiency limitations of existing lamination methods.

In addition, the magnetic levitation conveyor line adopts a magnetic levitation ring track, which facilitates the arrangement and coordination between the first loading mechanism, the second loading mechanism and the stacking mechanism, and has a better layout effect. The cooperation of the loading area, the unloading area and the buffer area is conducive to controlling the transportation efficiency of the magnetic levitation conveyor line and the stacking operation of the stacking mechanism at a better cooperation frequency to improve the stacking efficiency. There are multiple lamination stations on the lamination table, as well as multiple picking stations and multiple lamination robots corresponding to each lamination station, which is conducive to better coordination of pole piece transfer, pole piece handling and lamination operations. The operating rhythm further improves lamination efficiency.

In addition, the setting of the first CCD camera component eliminates the need to set up a mechanism for positioning the pole piece on the lamination table. That is, the lamination operation can be completed using a lamination table with a lamination station, which can reduce the cost of the lamination table. , at the same time, the use of the first CCD camera component and the second CCD camera component also has the advantages of simple structure, mature product, and high stability of use. The setting of the scrap removal and patching mechanism is conducive to the removal and patching of waste pieces from the first pole piece and the second pole piece, and the waste material station and the patching station are set between the picking area and the loading area. It is located downstream of the reclaiming area and has the advantage of reasonable layout. The arrangement of the moving slide rail and the driving part can realize the separate driving of each lamination table, which is convenient for the layout of the lamination table before lamination and the collective blanking after lamination.

Description of the drawings

The drawings that constitute a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation of the present utility model. In the attached picture:

Figure 1 is a schematic diagram of the overall structure of the lamination device according to the embodiment of the present invention;

Figure 2 is a schematic structural diagram of the stacking mechanism according to the embodiment of the present utility model;

Figure 3 is an enlarged view of point A in Figure 2;

Figure 4 is a schematic structural diagram of the lamination table according to the embodiment of the present utility model;

Figure 5 is a schematic structural diagram of the mobile slide rail according to the embodiment of the present utility model;

Figure 6 is an enlarged view of B in Figure 5;

Figure 7 is a schematic structural diagram of the waste removal and patching mechanism according to the embodiment of the present invention.

Explanation of reference symbols:

11. Stacking table; 111. Stacking station; 12. Stacking robot; 13. Moving slide rail; 14. Rack;

21. The first pole piece; 22. The second pole piece;

31. The first loading mechanism; 32. The second loading mechanism; 33. Maglev circular track; 34. Retrieving area; 35. Loading area; 36. Buffer area;

41. The first CCD camera component;

51. Second CCD camera assembly;

61. Scrap station; 62. Patch station; 63. Scrap removal and patching robot.

Detailed ways

It should be noted that, as long as there is no conflict, the embodiments and features of the embodiments of the present invention can be combined with each other.

In the description of the present invention, it should be noted that if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer" appear, they are based on the orientation or position shown in the drawings. The relationship is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, if terms such as “first” and “second” appear, they are used for descriptive purposes only and shall not be understood as indicating or implying relative importance.

In addition, in the description of the present utility model, unless otherwise explicitly limited, the terms "installation", "connection", "connection" and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, or it can be an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be internal to two components. Connected. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood based on specific circumstances.

The utility model will be described in detail below with reference to the accompanying drawings and embodiments.

This embodiment relates to a lamination device. In terms of the overall structure, as shown in Figures 1 to 7, it includes a lamination mechanism, a first loading mechanism 31 that transports the first pole piece 21 to the lamination mechanism, and a first feeding mechanism 31 that transports the first pole piece 21 to the lamination mechanism. The stacking mechanism transports the second loading mechanism 32 of the second pole piece 22, and the first loading mechanism 31 and the second loading mechanism 32 are respectively located on both sides of the stacking mechanism in the width direction.

Among them, the lamination mechanism includes a plurality of lamination stages 11 spaced apart along the length direction, and lamination robot components arranged corresponding to each lamination stage 11. Each lamination robot component can grasp the first pole piece 21 and the second pole piece 21. The pole pieces 22 are transported to the corresponding lamination stage 11 for alternate lamination.

Both the first loading mechanism 31 and the second loading mechanism 32 include a magnetic levitation conveying line for conveying the first pole piece 21 or the second pole piece 22 , and a detection part provided on one side of the magnetic levitation conveying line. The detection part It is possible to visually locate and detect the posture of the first pole piece 21 or the second pole piece 22 grasped by the stacking robot assembly.

Based on the above overall introduction, in this embodiment, as an exemplary structure, as still shown in Figure 1, the magnetic levitation conveyor line includes a magnetic levitation ring track 33, and a plurality of magnetic levitation slidingly arranged on the magnetic levitation ring track 33. Sub-assembly, each mover sub-assembly is equipped with a first pole piece 21 or a second pole piece 22.

The use of magnetic levitation ring track 33 in the magnetic levitation conveying line body facilitates the arrangement and coordination between the first loading mechanism 31, the second loading mechanism 32 and the stacking mechanism, and has a better arrangement effect.

Of course, the above-mentioned arrangement relationship between the magnetic levitation ring track 33 and the mover assembly can refer to the common magnetic levitation transportation system in the prior art. For example, the magnetic levitation ring track 33 is integrated with a stator assembly for magnetic levitation driving cooperation with the mover assembly.

And the first pole piece 21 and the second pole piece 22 in this embodiment refer to the negative pole piece unit and the positive pole piece used for lamination respectively, and the negative pole piece unit here refers to the negative pole piece bag (diaphragms are provided on both sides of the negative pole piece). , and the diaphragms on both sides encapsulate the pole pieces together).

At the same time, it should be mentioned that in this embodiment, the structural forms of the first loading mechanism 31 and the second loading mechanism 32 are basically the same, and they can be regarded as mirror images with the center line of each stacking table 11 as the axis. The only difference is that the first loading mechanism 31 is used to transfer the first pole piece 21 , and the second loading mechanism 32 is used to transfer the second pole piece 22 .

In this embodiment, as a preferred implementation form, the magnetic levitation ring track 33 is provided with a pickup area 34 close to the stacking mechanism, and a loading area 35 located upstream of the pickup area 34. Each mover assembly can be The loading area 35 receives the first pole piece 21 or the second pole piece 22 and transports them to the picking area 34 for the stacking robot assembly to grab.

Moreover, as a preferred arrangement form, the magnetic levitation ring track 33 of this embodiment is provided with a buffer zone 36 between the pickup area 34 and the loading area 35. The buffer area 36 is used to cache the materials slid by the loading area 35. To each moving sub-assembly of the material taking area 34.

Through the cooperation of the loading area 35, the unloading area 34 and the buffer area 36, it is helpful to control the transportation efficiency of the magnetic levitation conveyor line and the lamination operation of the lamination mechanism at a better cooperation frequency to improve the lamination efficiency.

Furthermore, taking into account the need to improve lamination efficiency, in this embodiment, as a preferred implementation form, as shown in FIGS. 2 to 4 , the material removal area 34 is provided with a material removal device corresponding to each lamination stage 11 respectively. Each material picking station can accommodate at least two mover assemblies, and each lamination table 11 is provided with at least two lamination stations 111 .

The lamination robot assembly includes a lamination robot 12 located between the corresponding lamination table 11 and the material picking station. The lamination robot 12 can grab the first pole piece 21 on each mover assembly from the material picking station. or the second pole piece 22, and are respectively placed on each lamination station 111 in the corresponding lamination stage 11.

It can be understood that multiple lamination stations 111 are provided on the lamination table 11, and multiple picking stations and multiple lamination robots 12 are provided corresponding to each lamination station 111, which facilitates the transfer and transfer of pole pieces. The handling and lamination operations are coordinated at a better operating rhythm, further improving lamination efficiency.

In this embodiment, as a preferred implementation form, as shown in FIG. 3 , both sides of each lamination stage 11 in the width direction are respectively provided with first pole pieces 21 or second pole pieces for stacking. 22 performs visual positioning of the first CCD camera assembly 41.

At the same time, as a preferred implementation form, the detection part includes a second CCD camera assembly 51 respectively provided corresponding to each material picking station. Of course, in the specific structure, the second CCD camera assembly 51 is preferably configured to include two second CCD camera units, and the two second CCD camera units respectively correspond to both ends of the mover assembly at the material picking station (that is, the material picking station (both ends of the first pole piece 21 or the second pole piece 22) at the work station to ensure the correction and positioning effect.

Here, the arrangement of the first CCD camera assembly 41 eliminates the need to provide a mechanism for positioning the pole piece on the lamination stage 11 , that is, the lamination operation can be accomplished using the lamination stage 11 having a lamination station 111 , and the lamination operation can be realized. The cost of the stacking table 11 is reduced. At the same time, the use of the first CCD camera assembly 41 and the second CCD camera assembly 51 also has the advantages of simple structure, mature products, and high stability of use.

In addition, in this embodiment, as a preferred implementation form, as shown in Figures 1 and 7, there are A waste removal and patching mechanism is provided. The waste removal and patching mechanism has a waste material station 61 located on one side of the magnetic levitation ring track 33, and a waste removal and patching device located between the magnetic levitation ring track 33 and the waste material station 61. Tablet Robot 63.

Specifically, the waste material station 61 is located downstream of the material retrieval area 34 and between the material retrieval area 34 and the material loading area 35. The waste removal and patching robot 63 can grab the first part of the NG detected by the detection part. The pole piece 21 or the second pole piece 22 is placed on the scrap station 61 .

Moreover, as a preferred improved form, in this embodiment, the scrapping and patching mechanism includes a patching station 62 arranged close to the scrapping station 61 , and the scrapping and patching robot 63 can operate at the patching station 62 The qualified first pole piece 21 or the second pole piece 22 detected by the detection unit is transported between the moving subassembly and the moving subassembly.

In this way, the scrap removal and patching mechanism can be arranged to facilitate the removal and patching of the waste pieces of the first pole piece 21 and the second pole piece 22, and the waste material station 61 and the patching station 62 are arranged at the pick-up position. Between the area 34 and the loading area 35, and located downstream of the unloading area 34, it has the advantage of reasonable layout.

In addition, in this embodiment, as an exemplary structure, as shown in FIGS. 5 and 6 , the lamination mechanism includes a moving slide rail 13 extending along the length direction, and can drive each stacking table 11 to move along the moving slide rail 13 respectively. The driving part of the rail 13 reciprocates.

It can be understood that the arrangement of the moving slide rail 13 and the driving part can realize the respective driving of each lamination table 11, which is beneficial to the arrangement of the lamination table 11 before lamination and the collective unloading after lamination.

Of course, during specific implementation, the above-mentioned driving part driving each lamination table 11 can be realized by using existing technical means. For example, the rack 14 can be arranged on one side of the moving slide rail 13. The drive motor on the stacking stage 11 is connected with a driving gear that can mesh with the rack 14, and the sliding speed of each stacking stage 11 is different by making the driving gear model different. , thereby realizing the separate driving of each stacking stage 11 and the parking at different positions.

It is worth mentioning that the various structures not mentioned in the stacking device of this embodiment can refer to common related equipment well known to those skilled in the art. For example, the scrapping and patching robot 63 and the stacking robot 12 can be used. The four-axis robot and mover assembly are equipped with jigs for carrying pole pieces, etc.

When the lamination device of this embodiment is specifically set up and laid out, each mover assembly can carry two pole pieces (the first pole piece 21 or the second pole piece 22), and be configured with five lamination stages, each stacked A lamination robot assembly is configured at the lamination table (that is, two lamination robots for twelve lamination robots), and two lamination stations 111 are provided on each lamination table 11 to achieve a split double According to the workstation stacking design, the distance between each stacking station 11 (stacking robot assembly) is then set to 850mm, so that each stacking station 11 can be separated and independently stacked at a distance of 850mm during the stacking process. The design form, and at the same time, through the cooperative arrangement of the transfer slide rail and the driving part, each stacking table 11 after the lamination is completed can be placed in the unloading area (set at the end of the moving slide rail 13 away from the lamination area) with a work station spacing of 175mm. ) are combined and cut at the same time.

Moreover, in the structural layout of the stacking device, two scrapping and patching mechanisms can be provided, corresponding to the first feeding mechanism 31 and the second feeding mechanism 32 respectively, to complete the corresponding pole pieces (the first pole piece 21 Or the scrapping and patching operations of the second pole piece 22).

In this way, by using a four-axis robot to carry, correct and double-station stacking methods, and combining the above-mentioned structural layout (five stacking stations) scheme design, compared with the existing use of a pair of four-station manipulators and an integrated The laminating solution of the eight-station stacking platform can break through the limit of its 480ppm ultimate lamination efficiency and achieve 800ppm lamination efficiency, which solves the existing problems of pick-and-place robot handling, CCD vision and UVW alignment platform positioning. Basically, the lamination solution using an eight-station lamination table has an efficiency bottleneck problem.

When laminating, the first loading mechanism 31 and the second loading mechanism 32 receive the pole pieces (the first pole piece 21 and the second pole piece 22) transferred from the previous process in their respective loading areas 35. , and each mover assembly is connected to two pieces. After receiving the pieces, each mover assembly moves to the buffer area 36 through the magnetic levitation ring track 33, and waits for the pole piece on each mover assembly in the pickup area 34 to be taken away by the corresponding stacking robot 12.

Each movable subassembly after taking out the pieces and each movable subassembly carrying the pole piece in the buffer area 36 move at the same time, and each movable subassembly carrying the pole piece moves to the picking area 34 to wait for the stacking robot 12 to pick up the pieces, and stack the pieces. The robot 12 uses the visual positioning parameters of the second CCD camera assembly 51 to adjust the posture of the pole piece, complete the pole piece deviation and then pick up the piece. After picking up the piece, the mover assembly moves to the loading area 35 to wait for the material to be received again. The stacking robot 12 After taking out the pieces, the pole pieces are transported to the lamination stage 11 for alternating stacking of positive and negative pole pieces (the first pole piece 21 and the second pole piece 22).

If the pole piece NG occurs during the picking process of the stacking robot 12, the piece picking will be abandoned, and the mover assembly with the NG pole piece and other mover assemblies that have picked up the pieces will run to the scrapping and patching station 62 together. , the waste removal and patching robot first performs waste removal processing, and then the lamination station 111 that lacks pole pieces due to waste removal can finally perform several rounds of lamination operations on all the lamination stations 111 that are missing pole pieces. Until the number of pole pieces in the pole group on the laminating station 111 with missing pieces reaches the set number.

After the number of pole pieces of the pole groups on all lamination stations 111 reaches the set value, the lamination robot 12 stops, and the lamination table 11 translates and unloads materials with the help of the moving slide rail 13 . During the unloading and moving process of the lamination table 11, all the lamination tables 11 are merged and moved to the unloading area while maintaining a 175mm distance between each station. After the unloading is completed, each lamination table 11 returns according to the original trajectory. During the movement Separate the components back to their respective lamination positions and keep the spacing at 850mm, and then proceed to laminate the new pole group.

It should be noted that there are two situations of scrapping: the first one, the two pole pieces on the mover assembly are all NG pieces, then both pieces will be scrapped to the scrap station 61 (with a scrap box), and the In the two cases, one piece is NG and the other is OK, then the NG piece is placed in the scrap station 61 by the scrapping and patching robot, and the OK piece is placed in the patching station 62 by the scrapping and patching robot, waiting for the next OK piece. Pairing is performed, and the mover assembly is placed on the mover assembly and transported away. The mover assembly does not need to stop receiving materials in the loading area 35.

The stacking device of this embodiment, based on the grasping flexibility of the stacking robot component and the cooperation of the detection part that can position the first pole piece 21 or the second pole piece 22, can achieve extremely high performance on the basis of having the handling function. Compared with the existing technology that uses a robot and a UVW alignment platform to cooperate with the correction and positioning function, the chip correction and positioning function greatly reduces the width of the stacked segments, thereby reserving enough space for the transfer of the pole pieces, and the first The loading mechanism 31 and the second loading mechanism 32 both use a magnetic levitation conveyor line, which helps to improve the pole piece transfer efficiency. At the same time, the stacking robot component and the split stacking table 11 are designed to be more efficient than existing ones. The design of the robot arm and the integrated lamination table 11 can prevent the lamination processes between the lamination tables 11 from interfering with each other, thereby reducing the risk of chip dropping, reducing the logical complexity of rejecting scrap patches, and reducing the number of scrap patches. It takes a long time and has better operability, which is conducive to breaking through the efficiency limitations of the existing lamination methods.

The above descriptions are only preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in within the protection scope of this utility model.

Claims (10)

1. A lamination device, characterized by: It includes a stacking mechanism, a first loading mechanism that transports the first pole piece to the stacking mechanism, and a second loading mechanism that delivers the second pole piece to the stacking mechanism, and the first loading mechanism The second loading mechanism is located on both sides of the lamination mechanism in the width direction; The lamination mechanism includes a plurality of lamination tables spaced apart along the length direction, and a lamination robot assembly arranged corresponding to each of the lamination tables. Each of the lamination robot assemblies is capable of grabbing the first pole piece. and the second pole piece and transport it to the corresponding lamination stage for alternate lamination; The first loading mechanism and the second loading mechanism both include a magnetic levitation conveying line for conveying the first pole piece or the second pole piece, and are located on one side of the magnetic levitation conveying line. The detection part is capable of visually locating and detecting the posture of the first pole piece or the second pole piece grasped by the stacking robot assembly. 2. The stacking device according to claim 1, characterized in that: The magnetic levitation conveyor line body includes a magnetic levitation ring track, and a plurality of mover assemblies that are magnetically levitation and slidingly disposed on the magnetic levitation ring track, and the first pole piece or the third mover component is placed on each of the mover components. Diode piece. 3. The stacking device according to claim 2, characterized in that: The magnetic levitation ring track is provided with a pickup area close to the stacking mechanism, and a loading area located upstream of the pickup area. Each of the mover components can accept the loading area. The first pole piece or the second pole piece is transported to the material picking area for the lamination robot assembly to grab. 4. The stacking device according to claim 3, characterized in that: The magnetic levitation ring track is provided with a buffer zone between the pickup area and the loading area. The buffer area is used to buffer each of the materials that slide from the loading area to the pickup area. Mover component. 5. The stacking device according to claim 3, characterized in that: The material taking area is provided with material taking stations corresponding to each of the lamination tables. Each of the material taking stations can accommodate at least two of the mover assemblies, and each of the lamination tables is equipped with Equipped with at least two laminating stations; The lamination robot assembly includes a lamination robot located between the corresponding lamination table and the material picking station. The lamination robot can grab each of the moving parts from the material picking station. The first pole piece or the second pole piece on the subassembly is placed on each lamination station in the corresponding lamination stage. 6. The stacking device according to claim 5, characterized in that: A first CCD camera assembly for visually positioning the first pole piece or the second pole piece during lamination is provided on both sides of each stacking stage in the width direction. 7. The stacking device according to claim 5, characterized in that: The detection part includes a second CCD camera assembly corresponding to each of the material picking stations. 8. The stacking device according to claim 3, characterized in that: There is a waste removal and patching mechanism between the first loading mechanism and the lamination mechanism and between the second loading mechanism and the lamination mechanism. The waste removal and patching mechanism has a A waste material station located on one side of the magnetic levitation ring track, and a scrap removal and patching robot located between the magnetic levitation ring track and the waste material station; The waste material station is located downstream of the material retrieval area and between the material retrieval area and the loading area. The waste removal and patching robot can grab the NG detected by the detection part. The first pole piece or the second pole piece and placed on the scrap station. 9. The stacking device according to claim 8, characterized in that: The scrap removal and patching mechanism includes a patching station arranged close to the scrap station, and the scrapping and patching robot can carry between the patching station and one of the mover components. The qualified first pole piece or the second pole piece detected by the detection part. 10. The stacking device according to any one of claims 1 to 9, characterized in that: The stacking mechanism includes a moving slide rail extending along the length direction, and a driving part capable of driving each stacking table to reciprocate along the moving slide rail.