Pole piece waste kicking equipment and lamination stacking machine

Abstract

The utility model relates to the technical field of lithium batteries, in particular to pole piece waste kicking equipment and a lamination stacker, the pole piece waste kicking equipment comprises an upside-down hanging conveying platform, a slice conveying platform, a lamination conveying platform and a detection assembly, the upside-down hanging conveying platform is provided with a material taking area, a material selecting area and a material discarding area; the slice conveying platform is arranged below the material taking area, and pole pieces on the slice conveying platform can be adsorbed and hung upside down on the upside-down hanging conveying platform in the material taking area; the lamination conveying platform is arranged below the material selecting area, and good pole pieces hung upside down on the conveying platform can be blown off to the lamination conveying platform in the material selecting area; the detection assembly is arranged between the material taking area and the material selecting area and used for detecting defective pole pieces and sending position signals of the defective pole pieces to the controller, and the controller is connected with the upside-down conveying platform, so that the defective pole pieces are conveyed to the material discarding area to achieve waste kicking. The waste pole piece kicking equipment can be used for stably, efficiently and accurately rejecting defective pole pieces under the condition of high-speed conveying of the pole pieces.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, in particular to pole piece kicking equipment and a laminating machine. Background Art

[0002] In the production process of lithium batteries, the quality and production efficiency of the stacking process play an extremely important role in improving the quality of lithium battery products and the overall production efficiency. Before stacking, the cut positive and negative electrodes need to be transported to the stacking station. After the position is recognized by the visual camera and the secondary positioning of the electrode is completed by the UVW platform, the positive and negative electrodes are stacked one by one on demand by the stacking robot. At present, the electrode conveying method of stacking equipment in the market is mainly vacuum belt, which combines the visual system and UVW platform to complete the precise positioning of the electrode. In the existing stacking equipment, the conveying efficiency of the vacuum belt has almost reached the extreme, and the conveying accuracy of the electrode is low. It often takes multiple devices to achieve a higher beat, which increases the investment cost and the complexity of the structure, making the equipment difficult to maintain in the later stage.

[0003] The new pole piece conveying solution requires the use of new loop conveying methods such as magnetic levitation conveying technology, but during the high-speed loop conveying process, the discarding of defective pole pieces is the biggest pain point.

[0004] The existing inverted belt adopts the mode of "detection - ejection of defective electrodes - transportation to the next workstation", which makes it difficult to complete the ejection of defective electrodes within a high-speed cycle, and it is difficult to improve the equipment cycle. During the high-speed transportation process, the defective electrodes flow into the next workstation, affecting the production process of the product, which has become a major bottleneck for improving the cycle of the stacking machine. Utility Model Content

[0005] The purpose of the utility model is to provide a pole piece kicking device and a stacking machine to solve the problems in the prior art that it is difficult to complete the kicking of defective pole pieces within a high-speed cycle, the equipment cycle is difficult to improve, and the defective pole pieces flow into the next workstation during high-speed transportation.

[0006] In order to solve the above problems, the pole piece kicking device involved in the utility model comprises:

[0007] The inverted conveying platform has a material taking area, a material selection area and a material discarding area;

[0008] The slicing conveying platform is arranged below the material taking area, and the electrode on the slicing conveying platform can be adsorbed and hung upside down on the inverted conveying platform in the material taking area;

[0009] The stacking conveying platform is arranged below the material selection area, and the good electrode sheets on the inverted conveying platform can be blown off to the stacking conveying platform in the material selection area;

[0010] The detection component is arranged between the material taking area and the material selecting area, and is used to detect the defective electrode pieces and send the position signal of the defective electrode pieces to the controller. The controller is connected with the inverted conveying platform to convey the defective electrode pieces to the discarding area for discarding.

[0011] In some specific embodiments,

[0012] The inverted conveying platform is a vacuum belt conveying structure;

[0013] And / or, the slice conveying platform is a magnetic suspension conveying structure;

[0014] And / or, the lamination conveying platform is a magnetic suspension conveying structure, connected to the controller, and receives instructions from the controller to adapt the magnetic suspension mover to the good pole pieces.

[0015] In some specific embodiments, the inverted conveying platform includes:

[0016] Conveyor belt, the lower end surface of the conveyor belt is the material taking area, material selection area and material discarding area in sequence;

[0017] The sealed cavities are located on the inner side of the conveyor belt, and there are at least three of them, at least one of which is arranged opposite to the material taking area, at least one of which is arranged opposite to the material selection area, and at least one of which is arranged opposite to the material discarding area, and the chambers of each sealed cavity are independent of each other; the lower end of the sealed cavity is a blowing and suction surface, and the blowing and suction surface faces the material taking area, the material selection area, or the material discarding area;

[0018] The sealed cavity is connected to the negative pressure device and / or the blowing device through the air guide tube, and the controller is connected to the solenoid valve that controls the opening and closing of the air guide tube.

[0019] In some specific embodiments, the sealed cavity arranged relative to the material taking area is connected to the negative pressure device, the sealed cavity arranged relative to the material selecting area is respectively connected to the negative pressure device and the blowing device, and the sealed cavity arranged relative to the material discarding area is connected to the blowing device;

[0020] The controller is connected with a solenoid valve which controls the opening and closing of the air guide pipe in the material selection area.

[0021] In some specific embodiments, the sealed cavities are arranged along a rectangular array on the inner side of the conveyor belt.

[0022] In some specific embodiments, the sealed cavity includes:

[0023] Grid plates are arranged at intervals to form a main frame of the sealed cavity;

[0024] A sealing plate is installed at both ends of the grid plate, an air pipe interface is installed on the sealing plate, an air guide pipe is installed at the air pipe interface, and the sealing cavity is connected with the negative pressure device and / or the blowing device through the air guide pipe;

[0025] The back plate is installed at the lower end of the grid plate and has air holes evenly opened thereon.

[0026] In some specific embodiments, the inverted conveying platform further comprises:

[0027] The anti-falling support piece is suspended below the inverted conveying platform and is located at the junction of the material taking area and the material selecting area. The pole piece of the material taking area enters the material selecting area after passing through the anti-falling support piece.

[0028] In some specific embodiments, the input end of the anti-fall support piece is tilted downward to form a slope;

[0029] And / or, the output end of the anti-fall supporting piece is tilted downward to form a slope.

[0030] In some specific embodiments, a waste box is provided below the discard area.

[0031] A laminating machine based on the same utility model concept includes the pole piece kicking device provided by any of the above-mentioned specific embodiments.

[0032] The beneficial effects of the utility model are as follows:

[0033] 1. The electrode scrapping equipment of the utility model realizes the picking and placing of the electrode through the vacuum and positive pressure configuration between the independent sealed cavities of the inverted belt, ensuring that the electrode is picked and placed accurately and quickly, and can stably and efficiently remove defective electrode pieces under high-speed transportation.

[0034] 2. It can kick out the waste electrodes during the electrode conveying process without affecting the stacking conveying speed of the high-speed stacking machine. The defective electrodes can be distinguished during the conveying process, and the good electrodes continue to be conveyed, while the defective electrodes enter the kicking station, which can adapt to the high-beat stacking machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 This is a structural schematic diagram of one viewing angle of the utility model.

[0037] Figure 2 This is a structural schematic diagram of the utility model from another perspective.

[0038] Figure 3 A schematic diagram of the structure of the sealed cavity from one perspective.

[0039] Figure 4 A schematic diagram of the structure of the sealed cavity from another perspective.

[0040] Figure 5 It is a schematic diagram of the structure after multiple sealed cavities are combined.

[0041] Figure 6 A schematic diagram of the structure of the backplane.

[0042] Explanation of the reference numerals in the figure: 100 - inverted conveying platform, 110 - conveyor belt, 120 - sealing chamber, 121 - grid plate, 122 - sealing plate, 1221 - air pipe interface, 123 - back plate, 1231 - air hole, 130 - anti-fall support plate, 200 - slicing conveying platform, 300 - stacking conveying platform, 400 - detection component, 500 - pole piece, 600 - waste box, A - material taking area, B - material selection area, C - discarding area. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0044] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar symbols throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0045] In the description of the present invention, it is necessary to understand that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", "axis", "circumferential", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention or simplifying the description, rather than indicating or implying 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 on the present invention.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0047] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix", "join", "hinge" and the like 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 an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] As mentioned in the background technology, the existing inverted belt adopts the mode of "detection - ejection of defective electrodes - transportation to the next workstation", which makes it difficult to eject defective electrodes within a high-speed cycle, and it is difficult to improve the equipment cycle; during the high-speed transportation process, the defective electrodes flow into the next workstation, affecting the production process of the product, and has become a major bottleneck for improving the cycle of the stacking machine.

[0049] In order to improve the above problems, this embodiment provides a pole piece kicking device, such as Figure 1-6 As shown, it includes an inverted conveying platform 100, a slicing conveying platform 200, a stacking conveying platform 300 and a detection component 400, wherein the inverted conveying platform 100 has a material picking area A, a material selection area B and a discarding area C; the slicing conveying platform 200 is arranged below the material picking area A, and the electrode 500 on the slicing conveying platform 200 can be adsorbed and hung upside down on the inverted conveying platform 100 in the material picking area A; the stacking conveying platform 300 is arranged below the material selection area B, and the good electrode on the inverted conveying platform 100 can be blown off to the stacking conveying platform 300 in the material selection area B; the detection component 400 is arranged between the material picking area A and the material selection area B, and is used to detect bad electrodes and send the position signal of the bad electrodes to the controller, and the controller is connected to the inverted conveying platform 100, so that the bad electrodes are conveyed to the discarding area C for discarding.

[0050] like Figure 1 , Figure 2As shown, the slicing conveying platform 200 and the stacking conveying platform 300 are parallel to each other, the inverted conveying platform 100 is perpendicular to the slicing conveying platform 200 and the stacking conveying platform 300 , and the inverted conveying platform 100 is located above the slicing conveying platform 200 and the stacking conveying platform 300 . Under the transportation of the slice conveying platform 200, the slice enters the material picking area A, and in the material picking area A, the slice is adsorbed and hung upside down on the inverted conveying platform 100, and is conveyed backwards on the inverted conveying platform 100; then it passes through the detection component 400, and the detection component 400 uses a sensor camera, such as a line scan camera, to capture features or marks on the electrode, perform image processing and comparison, detect defective electrodes, and send the position information of the defective electrodes to the controller. After receiving the position information of the defective electrodes, the controller sends an instruction to the inverted conveying platform 100; at the same time, all the slices continue to be conveyed backwards on the inverted conveying platform 100 to the material selection area B, and the inverted conveying platform 100 receives the corresponding instruction and releases the good electrodes in the material selection area B. The good electrodes will fall on the stacking conveying platform 300 and be conveyed backwards with the stacking conveying platform, while the bad electrodes continue to be conveyed backwards on the inverted conveying platform 100 to the discarding area C.

[0051] Specifically, in the exemplary embodiment, the inverted conveying platform 100 is a vacuum belt conveying structure, which adsorbs the pole piece 500 on the conveying belt 110 through a pressure difference, so that the pole piece 500 is conveyed backward with the conveying belt 110. The slice conveying platform 200 is a magnetic suspension conveying structure, and the stacked sheet conveying platform 300 is a magnetic suspension conveying structure. The magnetic suspension conveying structure includes a magnetic suspension track and a magnetic suspension mover. Under the action of magnetic force, the magnetic suspension mover suspends and moves along the magnetic suspension track. One pole piece 500 corresponds to one magnetic suspension mover. By placing the pole piece 500 on the magnetic suspension mover, the pole piece is conveyed backward with the magnetic suspension mover. The magnetic suspension movers are placed on the magnetic suspension track by corresponding manipulators. The stacking conveying platform 300 is also connected to the controller. The controller sends instructions to the stacking conveying platform 300 according to the detection results of the detection component. The corresponding manipulator receives the instructions of the controller and adapts the magnetic suspension mover for the good pole pieces, so that the good pole pieces released from the inverted conveying platform 100 can be accurately supported, thereby realizing the orderly and smooth backward conveyance of the good pole pieces.

[0052] Specifically, in the exemplary embodiment, the inverted conveying platform 100 includes a conveyor belt 110 and a sealed cavity 120, a negative pressure device and an air blowing device (the negative pressure device and the air blowing device are not shown in the figure), wherein the lower end surface of the conveyor belt is a material taking area A, a material selection area B and a material discarding area C in sequence, and the electrode piece 500 is adsorbed on the lower end surface of the conveyor belt 110. The sealed cavity 120 is located on the inner side of the conveyor belt 110, and there are at least three sealed cavities 120, wherein at least one sealed cavity 120 is arranged relative to the material taking area A, at least one sealed cavity 120 is arranged relative to the material selection area B, and at least one sealed cavity 120 is arranged relative to the material discarding area C, wherein one sealed cavity 120 corresponds to the position of a electrode piece 500, and the chambers of each sealed cavity 120 are independent of each other, which can ensure that the good electrode piece or the bad electrode piece corresponding to each sealed cavity 120 can independently complete the adsorption or release action. The lower end of the sealed cavity 120 is a blowing and suction surface, which faces the material picking area A or the material selection area B or the material discarding area N, which is conducive to the concentrated airflow to quickly reach the vicinity of the conveyor belt 110, so that there is a pressure difference between the upper and lower surfaces of the conveyor belt 110, so that the pole piece 500 is adsorbed on the conveyor belt 110 or blown off the conveyor belt 110.

[0053] Each sealed cavity 120 is connected to a negative pressure device or an air blowing device through an air duct. The negative pressure device can be a negative pressure machine, and the air blowing device can be a fan. The output end of the controller is connected to the input end of the solenoid valve that controls the opening and closing of the air duct. The opening and closing of the air duct is controlled by the solenoid valve, thereby changing the connection state of the sealed cavity 120 and the negative pressure device and the air blowing device. When the electrode piece 500 needs to be adsorbed, the sealed cavity 120 is connected to the negative pressure device, and when the electrode piece 500 needs to be released, the sealed cavity 120 is connected to the air blowing device.

[0054] Specifically, in the exemplary embodiment, the sealed cavity 120 arranged relative to the material taking area A is connected to the negative pressure device, so that the sealed cavity 120 of the material taking area A is always in a negative pressure state during operation, so that the pole piece 500 located below the material taking area A is adsorbed on the conveyor belt 110 under the negative pressure. The sealed cavity 120 arranged relative to the material selection area B is connected to the negative pressure device and the blowing device respectively, so that the sealed cavity of the material selection area B can be in not only a negative pressure state but also a positive pressure state during operation, so that the pole piece located in the material selection area B can be adsorbed on the conveyor belt 110 under the negative pressure, and can also be blown off the conveyor belt 110 by the airflow under the positive pressure state. The sealed cavity 120 arranged relative to the discarding area C is connected to the blowing device; so that the sealed cavity 120 of the discarding area C is always in a positive pressure state during operation, so that the pole piece located below the discarding area C is blown off the conveyor belt 110 by the airflow under the positive pressure.

[0055] Correspondingly, the output end of the controller is connected to the input end of the solenoid valve that controls the opening and closing of the air duct in the material selection area B, and the opening and closing of the air duct in the material selection area is controlled by the solenoid valve, thereby changing the connection state between the sealed cavity 120 and the negative pressure device and the blowing device in the material selection area B. When the electrode 500 received at the corresponding position is a defective electrode, the sealed cavity 120 is connected to the negative pressure device, and the defective electrode is adsorbed on the conveyor belt 110 and continues to be transported backward to the discard area C; when the electrode 500 received at the corresponding position is a good electrode, the sealed cavity 120 is connected to the blowing device, and the defective electrode is blown off from the conveyor belt 110 to the stacking conveying platform 300 and continues to be transported backward to the stacking station.

[0056] Specifically, in the example, Figure 5 As shown, the sealed cavity 120 is arranged along a rectangular array on the inner side of the conveyor belt 110, so as to realize a row of multiple pole pieces and improve the conveying efficiency.

[0057] Specifically, in the example, Figure 5 , Figure 6 As shown, the sealed cavity 120 includes a grid plate 121, a sealing plate 122 and a back plate 123, wherein the grid plates 121 are arranged at intervals to form the main frame of the sealed cavity, the sealing plates 122 are installed at both ends of the grid plates 121 by screws, an air pipe interface 1221 is installed on the sealing plate 122, an air pipe is installed at the air pipe interface 1221, and each sealed cavity 120 is connected to a negative pressure device or an air blowing device through the air pipe. The back plate 123 is installed at the lower end of the grid plate 121, and air holes 1231 are evenly opened on the back plate 123. In this embodiment, a plurality of sealed cavities 120 form a rectangle after being arranged in a rectangular array, the back plate 123 is integrally covered and installed on the back of the plurality of sealed cavities 120, and the sealing plate 122 is integrally installed on both sides of the plurality of sealed cavities 120. It is convenient for installation and maintenance.

[0058] Specifically, in the exemplary embodiment, the inverted conveying platform 100 further includes an anti-falling support sheet 130, which is suspended below the inverted conveying platform 100 and located at the junction of the material taking area A and the material selection area B. The pole piece of the material taking area A enters the material selection area B after passing through the anti-falling support sheet 130, thereby preventing the pole piece 500 from falling due to the lack of negative pressure between the two cavities.

[0059] In addition, the input end of the anti-fall support 130 is tilted downward to form a slope, which is conducive to the smooth entry of the pole piece into the anti-fall support 130; the output end of the anti-fall support 130 is tilted downward to form a slope, which is conducive to the smooth output of the pole piece from the anti-fall support 130.

[0060] Specifically, in the exemplary embodiment, a waste box 600 is provided below the discard area C for collecting defective electrodes dropped from the discard area C.

[0061] Working process:

[0062] like Figure 1 , Figure 2 As shown, in the material picking area A, the sealed cavity 120 is in a negative pressure state, and the pole piece 500 is sucked from the slicing conveying platform 200 to the conveyor belt 110. The position of the defective pole piece is determined by scanning and detecting the detection component 400. The stacking conveying platform 300 adapts the magnetic suspension mover to the good pole piece according to the detection result. The sealed cavity 120 corresponding to the good pole piece closes the passage of the negative pressure device and opens the passage of the blowing device, and the good pole piece is blown onto the corresponding magnetic suspension mover, and transported to the stacking station along the stacking conveying platform 300; then, the defective pole piece continues to be transported to the discarding area C on the inverted conveying platform 100, and is kicked out at high speed under the action of positive pressure and belt arc.

[0063] A laminating machine based on the same utility model concept includes the pole piece kicking device provided by any of the above-mentioned specific embodiments.

[0064] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", "a specific embodiment" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0065] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the scope disclosed by the present invention based on the technical solution and the concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pole piece kicking device, It is characterized in that include: An inverted conveying platform, wherein the inverted conveying platform has a material taking area, a material selection area and a material discarding area; A slicing conveying platform is arranged below the material taking area, and in the material taking area, the electrode on the slicing conveying platform can be adsorbed and hung upside down on the inverted conveying platform; The stacking conveying platform is arranged below the material selection area, and the good electrode sheets on the inverted conveying platform can be blown off to the stacking conveying platform in the material selection area; The detection component is arranged between the material taking area and the material selecting area, and is used to detect defective electrodes and send the position signal of the defective electrodes to the controller. The controller is connected to the inverted conveying platform to convey the defective electrodes to the discarding area for discarding.

2. The electrode scrapping device according to claim 1, It is characterized in that The inverted conveying platform is a vacuum belt conveying structure; And / or, the slice conveying platform is a magnetic suspension conveying structure; And / or, the lamination conveying platform is a magnetic suspension conveying structure, connected to the controller, and receives instructions from the controller to adapt the magnetic suspension mover to the good pole pieces.

3. The electrode scrapping device according to claim 1, It is characterized in that The inverted conveying platform comprises: A conveyor belt, the lower end surface of which is the material taking area, the material selection area and the material discarding area in sequence; The sealed cavities are located on the inner side of the conveyor belt, and there are at least three of them, wherein at least one sealed cavity is arranged relative to the material taking area, at least one sealed cavity is arranged relative to the material selection area, and at least one sealed cavity is arranged relative to the material discarding area, and the chambers of each sealed cavity are independent of each other; the lower end of the sealed cavity is a blowing and suction surface, and the blowing and suction surface faces the material taking area, the material selection area, or the material discarding area; The sealed cavity is connected to the negative pressure device and / or the blowing device through an air guide tube, respectively, and the controller is connected to a solenoid valve that controls the opening and closing of the air guide tube.

4. The electrode scrapping device according to claim 3, It is characterized in that The sealed cavity arranged relative to the material taking area is connected to the negative pressure device, the sealed cavity arranged relative to the material selecting area is respectively connected to the negative pressure device and the blowing device, and the sealed cavity arranged relative to the material discarding area is connected to the blowing device; The controller is connected to a solenoid valve for controlling the opening and closing of the air guide pipe in the material selection area.

5. The electrode scrapping device according to claim 3, It is characterized in that The sealed cavities are arranged along a rectangular array on the inner side of the conveyor belt.

6. The electrode scrapping device according to claim 3, It is characterized in that The sealed cavity comprises: Grid plates are arranged at intervals to form a main frame of the sealed cavity; A sealing plate is installed at both ends of the grid plate, an air pipe interface is installed on the sealing plate, the air pipe interface is connected to the air guide pipe, and the sealed cavity is connected to the negative pressure device and / or the blowing device through the air guide pipe; The back plate is installed at the lower end of the grid plate and is evenly provided with air holes.

7. The electrode scrapping device according to claim 1, It is characterized in that The inverted conveying platform also includes: The anti-falling support piece is suspended below the inverted conveying platform and is located at the position where the material taking area and the material selection area are connected. The pole piece of the material taking area enters the material selection area after passing through the anti-falling support piece.

8. The electrode scrapping device according to claim 7, It is characterized in that The input end of the anti-fall support piece is tilted downward to form a slope; And / or, the output end of the anti-fall supporting piece is tilted downward to form a slope.

9. The electrode scrapping device according to claim 1, It is characterized in that A waste box is arranged below the discard area.

10. A lamination machine, Features: Including the pole piece kicking device as described in any one of claims 1-9.

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