Material taking device and sheet carrying system

Abstract

The utility model discloses a material taking device and a sheet carrying system, and belongs to the technical field of battery production equipment, the material taking device comprises a fixing plate, a grabbing mechanism and a smoothing mechanism; a grabbing mechanism and a smoothing mechanism are arranged on the fixing plate; the grabbing mechanism can grab the sheets in a spaced multi-point vacuum adsorption mode. The flattening mechanism flattens the grabbed sheets on the grabbing mechanism in a whole-face vacuum adsorption mode. According to the material taking device, grabbing of the sheets is achieved, the sheets are kept flat on the material taking device, it is guaranteed that the sheets are placed on the deviation rectifying platform to be attached to the surface of the deviation rectifying platform, and therefore the stability and efficiency of a production line are improved, and material waste and production cost are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery production equipment, and particularly relates to a material taking device and a sheet handling system. Background Art

[0002] In the production and manufacturing process of lithium-ion batteries, the production process is highly automated and refined, and each process is closely related and interdependent. Among them, the electrode sheet is a core component of the battery, and its handling, precise positioning, and picking and placing operations between processes play a crucial role in ensuring product quality and improving production efficiency.

[0003] Currently, in the process of electrode sheet handling, a pick-and-place manipulator with a suction rod and a suction cup is widely used in the industry to realize the grasping, moving, and releasing of the electrode sheet. This design of the pick-and-place manipulator with a suction rod and a suction cup is favored because of its simple structure and flexible operation.

[0004] In the prior art, there is an electrode sheet handling device, including a rotating mechanism; a lifting mechanism installed on the rotating mechanism and driven by the rotating mechanism to achieve horizontal rotation; an electrode sheet grasping mechanism installed on the lifting mechanism and driven by the lifting mechanism to achieve free lifting, and the electrode sheet grasping mechanism is configured to be able to grasp the electrode sheet. Among them, the electrode sheet grasping mechanism includes a suction cup assembly and a mounting bracket I. The suction cup assembly is a plurality of rod-shaped suction cups. The suction cup assembly is connected to a vacuum pump through a pipeline, and the suction or loss of suction of the suction cup assembly is controlled by controlling the switch of the vacuum pump, so as to control the suction or release of the electrode sheet by the suction cup assembly.

[0005] However, with the continuous improvement of production process requirements and the increasing product fineness, the traditional pick-and-place manipulator with a suction rod and a suction cup gradually exposes its limitations and cannot meet the production requirements of higher standards. Specifically, when the traditional manipulator adsorbs and transports the electrode sheet, it mainly relies on partial contact between the suction cup and the electrode sheet to achieve grasping. Although the adsorption force can be increased by increasing the number of suction cups, there is always a part of the electrode sheet that is not in contact with the suction cup. This non-comprehensive contact method causes the electrode sheet to be uneven on the manipulator, and even wrinkles may occur. Eventually, when the manipulator places the electrode sheet on the rectifying platform, the electrode sheet cannot be kept completely flat. This uneven state makes the vacuum holes on the rectifying platform unable to be fully covered by the electrode sheet, resulting in air leakage during vacuum pumping. Air leakage not only reduces the adsorption efficiency of the rectifying platform, but also may cause the electrode sheet to slip or shift during the rectifying process, seriously affecting the rectifying accuracy and stability. More seriously, the air leakage phenomenon may also trigger the vacuum detection alarm mechanism of the equipment, wrongly removing ( "kicking out") the qualified electrode sheet as abnormal materials. This misremoval phenomenon not only causes a large amount of waste of electrode sheet materials, but also increases the downtime and maintenance costs of the production line, seriously reducing the overall efficiency and production capacity of the production line.

[0006] In summary, the traditional suction rod plus suction cup type material taking manipulator has become inadequate when dealing with the production requirements of high precision and high efficiency. There is an urgent need for a material taking device that can overcome the above limitations to improve the stability and efficiency of the production line, reduce material waste and production costs. Summary of the Invention

[0007] The object of the present invention is to provide a material taking device and a sheet handling system for the above deficiencies, which realizes the grasping of the sheet, keeps the sheet flat on the material taking device, ensures the fitting of the sheet on the deviation rectifying platform with the surface of the deviation rectifying platform, improves the stability and efficiency of the production line, and reduces material waste and production costs. To achieve the above object, the present invention provides the following technical solutions:

[0008] A material taking device includes a fixing plate, a grasping mechanism and a flattening mechanism; the grasping mechanism and the flattening mechanism are arranged on the fixing plate; the grasping mechanism can grasp the sheet by means of multi-point vacuum adsorption at intervals; the flattening mechanism flattens the grasped sheet on the grasping mechanism by means of whole-surface vacuum adsorption.

[0009] Further, the grasping mechanism includes a plurality of grasping components arranged at intervals; each grasping component includes a suction rod and a suction cup; one end of the suction rod is fixed on the fixing plate, and the other end is provided with a suction cup; the suction cup is used to directly contact the sheet and adsorb the sheet in a vacuum state.

[0010] Further, the suction rod is of a hollow structure and is connected to a vacuum pump through a pipeline.

[0011] Further, the flattening mechanism includes a flattening plate and a driving component; the flattening plate is arranged below the fixing plate; the driving component is arranged on the fixing plate; the output end of the driving component is connected to the flattening plate to drive the flattening plate to approach or move away from the fixing plate.

[0012] Further, the flattening plate is of a hollow structure and is connected to a vacuum pump through a pipeline; a plurality of air extraction holes are arranged on the bottom surface of the flattening plate.

[0013] Further, through holes are arranged on the flattening plate at positions corresponding to the suction rods; when the flattening plate approaches or moves away from the fixing plate, the through holes are used to avoid the suction rods; a protective layer is arranged on the surface of the flattening plate; vacuum holes are arranged at positions corresponding to the air extraction holes on the protective layer.

[0014] Further, the flattening mechanism further includes at least one guiding component; one end of the guiding component is movably connected to the fixing plate, and the other end is provided with a flattening plate.

[0015] Further, the guiding component includes a guiding column; a guiding hole is arranged on the fixing plate; one end of the guiding column passes through the guiding hole and is connected to the flattening plate.

[0016] Further, a bearing is provided on the side wall of the guiding hole; a guiding column is embedded in the bearing.

[0017] A sheet handling system includes a slide rail, a sliding frame, and the above-mentioned material taking device; the sliding frame can reciprocate along the slide rail; a material taking device is installed on the sliding frame.

[0018] The beneficial effects of the present utility model are as follows:

[0019] The present utility model discloses a material taking device and a sheet handling system, including a fixing plate, a grasping mechanism, and a flattening mechanism; the fixing plate is provided with a grasping mechanism and a flattening mechanism; the grasping mechanism can grasp a sheet by means of multi-point vacuum adsorption at intervals; the flattening mechanism flattens the grasped sheet on the grasping mechanism by means of whole-surface vacuum adsorption. The material taking device of the present utility model realizes the grasping of the sheet, keeps the sheet flat on the material taking device, ensures the fit of the sheet on the deviation rectifying platform with the surface of the deviation rectifying platform, thereby improving the stability and efficiency of the production line, and reducing material waste and production costs. Description of the Drawings

[0020] Figure 1 is a three-dimensional structural schematic diagram of the material taking device of the present utility model;

[0021] Figure 2 is a state schematic diagram of the material taking device of the present utility model grasping a pole piece;

[0022] Figure 3 is a state schematic diagram of the material taking device of the present utility model flattening a pole piece;

[0023] Figure 4 is a state schematic diagram of the material taking device of the present utility model placing a pole piece on a deviation rectifying platform;

[0024] In the drawings: 1 - fixing plate, 2 - grasping mechanism, 3 - flattening mechanism, 4 - grasping assembly, 5 - suction rod, 6 - suction cup, 7 - pipeline, 8 - flattening plate, 9 - driving assembly, 10 - vacuum hole, 11 - guiding assembly, 12 - guiding column, 13 - guiding hole, 14 - bearing, 15 - protective layer, 16 - slide rail, 17 - sliding frame, 18 - deviation rectifying platform, 19 - storage box, 20 - pole piece. Detailed Description of the Embodiments

[0025] The present utility model will be further described in detail below in conjunction with the drawings and specific embodiments, but the present utility model is not limited to the following embodiments.

[0026] All the features disclosed in this specification, or all the steps in any method or process disclosed, except for mutually exclusive features and / or steps, can be combined in any manner.

[0027] Any feature disclosed in this specification (including any additional claims and abstract), unless specifically stated, can be replaced by other equivalent or similar-purpose alternative features. That is, unless specifically stated, each feature is only an example in a series of equivalent or similar features.

[0028] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and 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 should not be construed as a limitation to the present utility model.

[0029] In addition, terms such as "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features.

[0030] In the following embodiment examples, the pole piece is taken as an example for illustration. It should be understood that the design concept and principle of this solution are equally applicable to other sheet materials.

[0031] Embodiment 1:

[0032] Figure 1 The specific structure of the material taking device of the present utility model is shown. The material taking device of the present utility model includes a fixing plate 1, a grasping mechanism 2 and a flattening mechanism 3. The fixing plate 1 fixes the entire material taking device and connects it to other working platforms. On the bottom surface of the fixing plate 1 ( Figure 1 and Figure 2 the lower side surface shown), that is, on the side facing the pole piece 20, there are provided a grasping mechanism 2 and a flattening mechanism 3. The grasping mechanism 2 can grasp the pole piece 20 from the storage box 19 by means of multi-point vacuum adsorption at intervals. Since the pole piece 20 will be uneven on the grasping mechanism 2, after the grasping mechanism 2 grasps the pole piece 20 from the storage box 19, the flattening mechanism 3 is then used to flatten the grasped pole piece 20 on the grasping mechanism 2 by means of whole-surface vacuum adsorption, so that the pole piece 20 remains flat on the grasping mechanism 2. Since both the flattening mechanism 3 and the grasping mechanism 2 are fixed on the fixing plate 1, when the material taking device moves, the fixing plate 1, the grasping mechanism 2 and the flattening mechanism 3 move simultaneously. Under the action of the flattening mechanism 3, the pole piece 20 can remain flat during the movement along with the grasping mechanism 2. A material taking device of the present utility model realizes the grasping of the pole piece 20, keeps the pole piece 20 flat on the material taking device, and can keep the pole piece 20 flat during the movement, improving the stability of the production line.

[0033] Specifically, the grasping mechanism 2 includes a plurality of grasping components 4. Four grasping components 4 can be arranged on the side of the fixing plate 1 facing the pole piece 20. The four grasping components 4 contact the pole piece 20 and grasp the pole piece 20 simultaneously. Moreover, the grasping components 4 can be arranged at the middle position on the ground of the fixing plate 1. In this way, when the grasping components 4 grasp the pole piece 20 from the storage box 19, the grasping of the pole piece 20 can be avoided from being affected by the collision between the grasping components 4 and the frame of the storage box 19. The grasping component 4 includes a suction rod 5 and a suction cup 6. One end is fixed on the fixing plate 1, and the other end is fixed with the suction cup 6. The suction cup 6 is used to directly contact the pole piece 20 in a vacuum state, adsorb and grasp the pole piece 20. The suction rod 5 is a hollow structure. The suction rod 5 is connected to a vacuum pump through a pipeline 7. The suction or loss of suction of the suction cup 6 is controlled by controlling the switch of the vacuum pump. When it is necessary to grasp the pole piece 20, the vacuum pump is started to evacuate the inside of the suction rod 5, so that the suction cup 6 generates suction, thereby grasping the pole piece 20; when it is necessary to put down the pole piece 20, the vacuum pump is turned off to break the vacuum inside the suction rod 5, so that the suction cup 6 loses suction, thereby putting down the pole piece 20.

[0034] Specifically, the flattening mechanism 3 includes a flattening plate 8 and a driving component 9. The flattening plate 8 is disposed below the fixing plate 1, and the size of the flattening plate 8 can be larger than the size of the pole piece 20. The driving component 9 can be arranged on the top surface of the fixing plate 1. The driving component 9 can be a cylinder. When the cylinder is arranged on the top surface of the fixing plate 1, the piston rod of the cylinder passes through the fixing plate 1 and is connected to the flattening plate 8. The piston rod of the cylinder can move relative to the fixing plate 1. When the cylinder machine is started, the piston rod of the cylinder expands and contracts, driving the flattening plate 8 to approach or move away from the fixing plate 1. The inside of the flattening plate 8 is a hollow structure and is connected to a vacuum pump through a pipeline 7. A plurality of air extraction holes are provided on the bottom surface of the flattening plate 8 facing the pole piece 20. By controlling the vacuum pump, suction or loss of suction can be generated on the bottom surface of the flattening plate 8. A number of uniform holes can be opened on the bottom surface. When the flattening plate 8 adsorbs the pole piece 20, the flattening plate 8 not only contacts the entire surface of the pole piece 20, but also the force on the pole piece 20 is uniform, making the pole piece 20 flat. When the grasping mechanism 2 grasps the pole piece 20 in the storage box 19, the flattening plate 8 does not work. At this time, the flattening plate 8 is in contact with the fixing plate 1, and the flattening plate 8 does not enter the storage box 19, thus avoiding the possible collision between the flattening plate 8 and the storage box 19 and the influence on the grasping process. After the grasping mechanism 2 grasps the pole piece 20, since the grasping mechanism 2 uses a plurality of suction cups 6 to grasp the pole piece 20 by adsorption, relatively speaking, the suction cup 6 and the pole piece 20 are in point contact. In this way, the pole piece 20 will be uneven when on the grasping component 4, and the entire surface of the pole piece 20 may be uneven. At this time, first start the cylinder, the piston rod of the cylinder extends, driving the flattening plate 8 to approach the pole piece 20 on the suction cup 6, making the bottom surface of the flattening plate contact the pole piece 20, and then turn on the vacuum pump to make the flattening plate 8 generate suction. Since the size of the flattening plate 8 is larger than that of the pole piece 20, the flattening plate 8 contacts the entire large surface of the pole piece 20, and the flattening plate 8 adsorbs the pole piece 20, thereby flattening the pole piece 20. During the movement of the material taking device, the suction of the flattening plate 8 is maintained, so that the pole piece 20 also remains flat during the movement.

[0035] Specifically, a perforation is provided on the flattening plate 8 at the position corresponding to the suction rod 5. The size of the perforation is larger than that of the suction rod 5. In this way, when the flattening plate 8 approaches or moves away from the fixing plate 1, it is not interfered by the suction rod 5, and the piston rod of the cylinder can smoothly drive the flattening plate 8 to move.

[0036] Specifically, the flattening mechanism 3 further includes at least one guiding component 11. Four guiding components 11 can be arranged between the flattening plate 8 and the fixing plate 1, and the four guiding components 11 are respectively located at the four corresponding corners between the flattening plate 8 and the fixing plate 1. During the process of the flattening plate 8 approaching or departing from the fixing plate 1, the guiding component 11 guides the flattening plate 8 to prevent the flattening plate 8 from laterally deviating relative to the fixing plate 1 during movement. The guiding component 11 includes a guiding column 12. A guiding hole 13 is opened at the position of the fixing plate 1 corresponding to the guiding column 12. The guiding column 12 is located in the guiding hole 13, and the guiding hole 13 restricts the guiding column 12 within the hole, enabling the guiding column 12 to move up and down only within the hole relative to the fixing plate 1. One end of the guiding column 12 passes through the fixing plate 1 and is connected to the flattening plate 8. When the flattening plate 8 moves towards or away from the fixing plate 1, the guiding column 12 moves up and down with the flattening plate 8, playing a guiding role for the flattening plate 8. A bearing 14 is further provided on the side wall of the guiding hole 13. The bearing 14 is a linear bearing 14, and the guiding column 12 is installed in the bearing 14. The bearing 14 reduces the friction between the guiding column 12 and the side wall of the guiding hole 13.

[0037] Specifically, the flattening plate 8 can be an aluminum plate, and a protective layer 15 is provided on the side facing the pole piece 20. The protective layer 15 is made of soft rubber, and a vacuum hole 10 is opened at the position corresponding to the air extraction hole on the protective layer 15. When the material taking device of the present utility model needs to place the pole piece 20 on other working platforms, the protective layer 15 can prevent the flattening plate 8 from making hard contact with the working platform, playing a buffering role to protect the pole piece 20 and avoiding damage to the pole piece 20 and the working platform.

[0038] The working process of the material taking device is described below in combination with the above-mentioned material taking device of the present utility model:

[0039] When the material taking device needs to grasp the pole piece 20 in the storage box 19, if the flattening plate 8 is away from the fixing plate 1, then the driving component 9 needs to be started to drive the flattening plate 8 to approach and contact the fixing plate 1, and then the grasping mechanism 2 is allowed to enter the storage box 19. When the suction cup 6 contacts the pole piece 20, the vacuum pump is turned on to make the suction cup 6 generate suction force to adsorb and grasp the pole piece 20. After the grasping mechanism 2 grasps the pole piece 20, the grasping mechanism 2 is moved out and away from the storage box 19, and then the driving component 9 is started to drive the flattening plate 8 to move away from the fixing plate 1 and finally contact the pole piece 20, and then the vacuum pump is turned on to make the flattening plate 8 generate suction force to flatten the pole piece 20.

[0040] Embodiment 2:

[0041] Figures 2 to 4An example of a sheet handling system including the pick-up device of Embodiment 1 is shown as an example in one implementation. The handling system includes a slide rail 16, a sliding carriage 17, and the above pick-up device. The slide rail 16 includes a horizontal slide rail 16 and a vertical slide rail 16. A sliding carriage 17 is provided in the slide rail 16. The sliding carriage 17 can reciprocate horizontally and vertically along the slide rail 16. The fixing plate 1 of the pick-up device of Embodiment 1 is installed on the sliding carriage 17. The pick-up device can move with the sliding carriage 17 to transport the pole piece 20.

[0042] The following describes the working process of the handling system for transporting the pole piece 20 from the storage box 19 to the rectifying platform 18 in combination with the above handling system:

[0043] First, the pole piece 20 is taken out from the storage box 19. As Figure 2 shown, it is a schematic diagram of the state where the handling system grabs the pole piece 20 from the storage box 19. Slide the sliding carriage 17 on the slide rail 16 to drive the pick-up device close to the storage box 19. Move the grasping mechanism 2 of the pick-up device into the storage box 19 so that the suction cup 6 contacts the pole piece 20. Then turn on the vacuum pump to make the suction cup 6 generate suction to adsorb and grab the pole piece 20. After the grasping mechanism 2 grabs the pole piece 20, slide the sliding carriage 17 again to take the sliding carriage 17 away from the storage box 19. Then start the driving component 9 to drive the flattening plate 8 away from the fixing plate 1 and finally contact the pole piece 20. Then turn on the vacuum pump to make the flattening plate 8 generate suction to flatten the pole piece 20. As Figure 3 shown, it is a schematic diagram of the flattening plate 8 flattening the pole piece 20.

[0044] Then place the pole piece 20 on the pick-up device on the rectifying platform 18. As Figure 4 shown, it is a schematic diagram of the clamping and feeding device placing the pole piece 20 on the rectifying platform 18. Slide the sliding carriage 17 on the slide rail 16 again to make the pick-up device close to the rectifying platform 18 so that the pole piece 20 on the pick-up device contacts the rectifying platform 18. During this process, the vacuum pump remains open, and the suction cup 6 and the flattening plate 8 are in a state of having suction, so that the pole piece 20 can also remain flat during transportation. Finally, when it contacts the surface of the rectifying platform 18, the pole piece 20 also remains completely flat and is completely attached to the rectifying platform 18, ensuring that when the pole piece 20 is on the rectifying platform 18, all the vacuum holes 10 on the rectifying platform 18 are covered, thereby ensuring that the rectifying platform 18 fully adsorbs the entire pole piece 20 to ensure flatness, avoiding the equipment from kicking materials due to vacuum alarm, improving production efficiency while reducing the scrap rate of the pole piece 20. After the pole piece 20 contacts the surface of the rectifying platform 18, break the vacuum of the suction cup 6 and the flattening plate 8, place the pole piece 20 on the rectifying platform 18, and at the same time evacuate the rectifying platform 18 to make the rectifying platform 18 adsorb the pole piece 20.

[0045] Finally, slide the sliding carriage 17 on the sliding rail 16 to move the material taking device to the storage box 19, and then repeat the above material taking process.

[0046] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present invention.

Claims

1. A material taking device, characterized in that: The invention comprises a fixed plate (1), a gripping mechanism (2) and a smoothing mechanism (3); the fixed plate (1) is provided with the gripping mechanism (2) and the smoothing mechanism (3); the gripping mechanism (2) can grip the sheet material by means of spaced-apart multi-point vacuum adsorption; the smoothing mechanism (3) smoothes the gripped sheet material on the gripping mechanism (2) by means of full-surface vacuum adsorption.

2. A material taking device according to claim 1, characterized in that: The gripping mechanism (2) comprises a plurality of gripping assemblies (4) arranged at intervals; the gripping assembly (4) comprises a suction rod (5) and a suction cup (6); one end of the suction rod (5) is fixed on a fixed plate (1), and the other end is provided with a suction cup (6); the suction cup (6) is used to directly contact with the sheet material in a vacuum state to absorb the sheet material.

3. A material taking device according to claim 2, characterized in that: The suction rod (5) is a hollow structure and is connected to a vacuum pump via a pipeline (7).

4. A material taking device according to claim 1, characterized in that: The smoothing mechanism (3) comprises a smoothing plate (8) and a driving assembly (9); the smoothing plate (8) is provided below the fixed plate (1); the driving assembly (9) is provided on the fixed plate (1); the output end of the driving assembly (9) is connected to the smoothing plate (8) to drive the smoothing plate (8) to approach or move away from the fixed plate (1).

5. A material taking device according to claim 4, characterized in that: The smoothing plate (8) is a hollow structure and is connected to a vacuum pump via a pipeline (7); a plurality of air extraction holes are provided on the bottom surface of the smoothing plate (8).

6. A material taking device according to claim 4, characterized in that: A perforation is provided on the stroking plate (8) at a position corresponding to the suction rod (5); when the stroking plate (8) approaches or moves away from the fixed plate (1), the perforation is used to avoid the suction rod (5); a protective layer (15) is provided on the surface of the stroking plate (8); and a vacuum hole (10) is provided on the protective layer (15) at a position corresponding to the air extraction hole.

7. A material taking device according to claim 4, characterized in that: The smoothing mechanism (3) further comprises at least one guide assembly (11); one end of the guide assembly (11) is movably connected to the fixed plate (1), and the other end is provided with a smoothing plate (8).

8. A material taking device according to claim 7, characterized in that: The guide assembly (11) comprises a guide column (12); a guide hole (13) is provided on the fixing plate (1); one end of the guide column (12) passes through the guide hole (13) and is connected to the smoothing plate (8).

9. A material taking device according to claim 8, characterized in that: A bearing (14) is provided on the side wall of the guide hole (13); a guide column (12) is embedded in the bearing (14).

10. A sheet material handling system, characterized in that: It comprises a slide rail (16), a sliding frame (17) and a material taking device as claimed in any one of claims 1 to 9; the sliding frame (17) can reciprocate along the slide rail; and the material taking device is installed on the sliding frame (17).

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