A scraper device

Abstract

The utility model discloses a kind of scraping devices, for removing the coating slurry on pole piece. Scraping device includes at least one scraping component, is set to the top of pole piece, scraping component includes scraping drive part, scraper seat and scraper, scraper is installed in scraper seat, scraping drive part is used to drive scraper seat up and down movement to contact pole piece, scraper seat is connected with scraping drive part by at least one adjusting mechanism, rotating sliding table is used to adjust the angle of scraper seat and pole piece. The utility model scraping device adjusts the angle between scraper and pole piece by rotating sliding table, accelerates the time that scraper head and pole piece form negative pressure, is convenient for timely adsorbing removed coating slurry simultaneously, and scraper head tail portion cannot hang material.

Description

Technical Field

[0001] This utility model belongs to the field of lithium battery automation equipment, and in particular relates to a scraping device used in the electrode preparation process. Background Technology

[0002] During the manufacturing process of lithium battery electrodes, the coating slurry on the surface of the current collector needs to be partially removed in the electrode welding area to ensure reliable welding between the electrode and the current collector.

[0003] Currently, when traditional scraping devices use scrapers to remove coating slurry, material tends to stick to the head and tail of the scraper, causing the material to thicken at the tail of the electrode scraping area. Utility Model Content

[0004] The purpose of this utility model is to provide a scraping device to address at least one of the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the scraping device of this utility model includes: at least one scraping assembly disposed above the electrode sheet, the scraping assembly including a fourth driving member, a scraper seat and a scraper, the scraper being mounted on the scraper seat, the scraping driving member being used to drive the scraper seat to move up and down to contact the electrode sheet, the scraper seat and the scraping driving member being connected by at least one rotating slide, the rotating slide being used to adjust the angle between the scraper seat and the electrode sheet.

[0006] In one embodiment of the scraping device of this utility model, a first driving member is further included. The first driving member is connected to the scraping assembly and is used to drive the scraping assembly to move in the conveying direction of the electrode sheet.

[0007] In one embodiment of the scraping device of this utility model, a second driving member is further included. The driving direction of the second driving member is perpendicular to the electrode plate, and it is used to drive the scraping assembly to move up and down.

[0008] In one embodiment of the scraping device of this utility model, a third driving member is further included. The driving direction of the third driving member is the same as the width direction of the electrode sheet, and it is used to drive the scraping assembly to move along the width direction of the electrode sheet.

[0009] In one embodiment of the scraping device of this utility model, the scraper is at a set angle to the electrode, and the set angle range is 70°-90°.

[0010] In one embodiment of the scraping device of this utility model, a cam assembly is further included. The cam assembly includes a rotating wheel, a cam, and a connecting plate. The scraping drive is a rotary motor. The rotating wheel is connected to the drive end of the scraping drive. The connecting plate is slidably mounted on a third mounting plate. The scraper seat and the cam are respectively mounted on both ends of the connecting plate. The outer circumferential surface of the rotating wheel is provided with a cam groove that cooperates with the cam.

[0011] In one embodiment of the scraping device of this utility model, the adjusting mechanism includes a first rotating slide and a second rotating slide. The base of the first rotating slide is mounted on the connecting plate via a slide mounting plate. The rotating end of the first rotating slide is connected to an adjusting seat. The rotating shaft of the first rotating slide is parallel to the width direction of the electrode sheet. The base of the second rotating slide is connected to the first rotating slide via an adjusting seat. The rotating end of the second rotating slide is connected to the scraper seat. The rotating shaft of the second rotating slide is parallel to the electrode sheet conveying direction.

[0012] In one embodiment of the scraping device of this utility model, a distance sensor is further provided on the scraping drive component, and a calibration block that cooperates with the distance sensor is provided on the connecting plate.

[0013] In one embodiment of the scraping device of this utility model, a compression spring plate is provided at the lower end of the third mounting plate, and a buffer spring is provided between the compression spring plate and the connecting plate.

[0014] In one embodiment of the scraping device of this utility model, the scraper seat has a vacuum space with the opening facing downward. The scraper is installed in the vacuum space and extends out of the scraper seat through the opening. The scraper seat is provided with an injection port and a suction port that communicate with the vacuum space. The injection port is used to inject diluent into the vacuum space, and the suction port is used to discharge the mixture of diluent and coating slurry.

[0015] In summary, the scraping device of this utility model adjusts the angle between the scraper and the electrode by rotating the slide table, which speeds up the time for the scraper head and the electrode to form a negative pressure, making it easier to absorb the removed coating slurry in time, while preventing material from sticking to the tail of the scraper head. Attached Figure Description

[0016] Figure 1 This is a structural diagram of an embodiment of the present utility model;

[0017] Figure 2 yes Figure 1 Another structural diagram;

[0018] Figure 3 yes Figure 1 Structural diagram of the scraper assembly;

[0019] Figure 4 yes Figure 1 Cross-sectional view of the scraper holder;

[0020] Figure 5 yes Figure 1 The right view;

[0021] In the diagram: 100, mounting bracket; 110, main support; 111, scale; 120, adjusting plate; 121, pointer; 130, plane support; 200, first driving component; 300, first mounting plate; 310, second mounting plate; 320, adjusting assembly; 321, horizontal adjustment plate; 322, adjusting bolt; 323, screw mounting seat; 330, horizontal plate; 340, first dust collection box; 400, scraper assembly; 410, scraper; 420, third mounting plate; 421, pressure spring plate; 430, scraper driving component; 440, scraper seat; 441, injection port; 4 42. Suction outlet; 443. Vacuum space; 450. Manual slide; 460. Cam assembly; 461. Rotating wheel; 4611. Cam groove; 462. Cam; 463. Connecting plate; 464. Second dust collection box; 465. Third dust collection box; 470. Distance sensor; 471. Calibration block; 480. Buffer spring; 490. Rotary slide; 491. First rotary slide; 492. Second rotary slide; 493. Slide mounting plate; 494. Adjustment seat; 500. Second drive component; 600. Third drive component; 610. Correction sensor; 700. Diluent storage tank. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0023] The scraping device disclosed in this embodiment adjusts the angle between the scraper and the electrode by rotating the slide table, which speeds up the time for the scraper head and the electrode to form a negative pressure, making it easier to absorb the removed coating slurry in time, while preventing material from sticking to the tail of the scraper head.

[0024] like Figure 1 , Figure 2As shown in the figure, this utility model discloses a slurry coating removal device, including a mounting frame 100, a first driving member 200, a first mounting plate 300, and at least one scraping assembly 400. The mounting frame 100 includes a main support 110, an adjusting vertical plate 120, and a flat support 130. The flat support 130 is mounted on the adjusting vertical plate 120, and the adjusting vertical plate 120 is rotatably mounted on the main support 110. The horizontality of the flat support 130 can be adjusted by rotating the adjusting vertical plate 120 and the main support 110. Two mounting frames 100 are provided, located on both sides of the electrode sheet. Two first driving members 200 are also provided, respectively mounted on the upper surface of the corresponding flat support 130. The angle between the first driving member 200 and the horizontal plane can be adjusted by the mounting frame 100, and the driving direction of the first driving member 200 can be adjusted to be parallel to the electrode sheet conveying direction. A scale 111 is provided on the main support 110, and a pointer 121 is provided on the adjusting plate 120 to facilitate the adjustment of the rotation angle of the adjusting plate 120.

[0025] The first driving member 200 is preferably a motor lead screw assembly. The first mounting plate 300 is disposed above the electrode and connected to the driving end of the first driving member 200. The scraping assembly 400 is mounted on the first mounting plate 300 and includes a scraper 410, which is driven to move up and down to contact the electrode and remove the coating slurry on the electrode.

[0026] In other embodiments, the first driving member 200 may also be configured as one, with its driving end connected to the first mounting plate 300, and both ends of the first mounting plate 300 being slidably connected to the planar support 130 via slide rails.

[0027] The first driving member 200 drives at least one scraping assembly 400 to move and remove the coating slurry on the electrode sheet. When the first driving member 200 drives at least one scraping assembly 400 to move synchronously with the electrode sheet conveying speed, the scraper 410 is driven to move downward to contact the electrode sheet. Maintaining synchronous downward movement ensures a smooth scraping edge. After the scraper 410 contacts the electrode sheet, the first driving member 200 drives at least one scraping assembly 400 to move at a speed less than the electrode sheet conveying speed, creating a speed difference with the electrode sheet conveying speed, thereby removing the coating slurry and forming the electrode tab welding area.

[0028] Furthermore, the scraping device also includes a second driving component 500, which is mounted on the first mounting plate 300 and is preferably a cylinder. Its driving direction is perpendicular to the electrode plate, driving the scraping assembly 400 to move up and down.

[0029] Furthermore, the scraping device also includes a second mounting plate 310 connected to the drive end of the second drive member 500. A third drive member 600 is disposed on the second mounting plate 310. The third drive member 600 is preferably a motor screw assembly, and its driving direction is the same as the width direction of the electrode. The drive end of the third drive member 600 is connected to the scraping assembly 400. When electrode offset is detected, the third drive member 600 drives the scraping assembly 400 to move synchronously along the width direction of the electrode.

[0030] Two correction sensors 610 are located above the edge of the electrode and upstream of the scraper assembly 400 to detect the offset of the electrode.

[0031] The scraping assembly 400 is mounted on a transverse plate 330 via an adjusting component 320. The transverse plate 330 is connected to the driving end of the third driving component 600. When the correction sensor 610 detects electrode misalignment, the third driving component 600 drives the scraping assembly 400 to move synchronously as a whole via the transverse plate 330. In this embodiment, the number of scraping assemblies 400 is set to six, evenly spaced on the transverse plate 330. In other embodiments, the number and spacing of the scraping assemblies 400 can be adjusted according to the electrode production situation.

[0032] The adjusting assembly 320 includes a transverse adjusting plate 321, an adjusting bolt 322, and a screw mounting base 323. The transverse adjusting plate 330 has multiple mounting holes. The screw mounting base 323 is mounted on the transverse adjusting plate 330 through these holes. The adjusting bolt 322 passes through the screw mounting base 323 and connects to the transverse adjusting plate 321. The transverse adjusting plate 321 is connected to the scraper assembly 400. The position of the scraper assembly 400 can be adjusted using the adjusting bolt 322.

[0033] Furthermore, such as Figure 3As shown, the scraper assembly 400 includes a third mounting plate 420, a scraper drive 430, and a scraper holder 440. A scraper 410 is mounted on the scraper holder 440. The third mounting plate 420 is connected to the second mounting plate 310 via a slide rail, and the top of the third mounting plate 420 is connected to a horizontal adjustment plate 321. The scraper drive 430 is slidably mounted on the third mounting plate 420 via a manual slide 450, used to adjust the distance between the scraper drive 430 and the electrode, ensuring that multiple scraper assemblies 400 are at the same height when assembled. The scraper drive 430 and the scraper holder 440 are connected via a cam assembly 460. The cam assembly 460 includes a rotating wheel 461, a cam 462, and a connecting plate 463. The connecting plate 463 is slidably mounted on the third mounting plate 420 via a slide rail, and the scraper holder 440 and the cam 462 are respectively mounted at both ends of the connecting plate 463. The scraper drive 430 is a rotary motor. The outer circumferential surface of the rotating wheel 461 is provided with a cam groove 4611 that cooperates with the cam 462. The cooperation between the rotating wheel 461 and the cam groove 4611 enables the scraper 410 to rise and fall periodically, which is easy to control.

[0034] The scraper drive unit 430 is also equipped with a distance sensor 470, and the connecting plate 463 is equipped with a calibration block 471 that cooperates with the distance sensor 470. The distance sensor 470 feeds back the displacement of the cam 462 pressing down to the scraper drive unit 430, ensuring that the scraper 410 accurately contacts the electrode and lifts off the electrode.

[0035] A pressure spring plate 421 is provided at the lower end of the third mounting plate 420. A buffer spring 480 is provided between the pressure spring plate 421 and the connecting plate 463 so that the scraper 410 contacts the electrode with appropriate downward pressure to avoid damaging the electrode.

[0036] Furthermore, the connecting plate 463 is connected to the scraper holder 440 via at least one rotary slide 490 serving as an adjustment mechanism to adjust the installation angle of the scraper holder 440. This ensures that the blade of the scraper can make full contact with the surface of the electrode sheet without one end of the blade exerting greater pressure on the electrode sheet surface than the other, thereby achieving uniform scraping operation. In this embodiment, two rotary slides 490 are provided: a first rotary slide 491 and a second rotary slide 492. The base of the first rotary slide 491 is mounted on the connecting plate 463 via a slide mounting plate 493. The rotating end of the first rotary slide 491 is connected to an adjustment seat 494, and the axis of rotation of the first rotary slide 491 is parallel to the electrode sheet width direction. The base of the second rotary slide 492 is connected to the first rotary slide 491 via an adjustment seat 494. The rotating end of the second rotary slide 492 is connected to the scraper holder 440, and the axis of rotation of the second rotary slide 492 is parallel to the electrode sheet conveying direction. The angle between the scraper holder 440 and the electrode is adjusted by the first rotating slide 491, thereby adjusting the angle between the scraper 410 and the electrode. The parallelism between the end of the scraper holder 440 and the electrode is adjusted by the second rotating slide 492, thereby adjusting the parallelism between the blade of the scraper 410 and the electrode.

[0037] In some embodiments, the scraper may also be integrated with the scraper holder.

[0038] In other embodiments, the adjustment mechanism can also be implemented using a screw that can be tightened. In this embodiment, the mounting angle of the scraper holder can be adjusted by loosening the screw, and the screw can be tightened to secure it when the scraper can fully contact the electrode surface. Preferably, in this embodiment, a dial and pointer can also be provided to record the adjusted angle.

[0039] Furthermore, such as Figure 4 As shown, the scraper holder 440 has a vacuum space 443. The scraper 410 is installed in the vacuum space 443 and extends out of the scraper holder 440. The scraper holder 440 is provided with an injection port 441 and a suction port 442 that communicate with the vacuum space 443. The injection port 441 is connected to a diluent storage tank 700 located on one side of the mounting bracket 100, and the suction port 442 is connected to a negative pressure device. During the process of the scraper 410 removing the coating slurry, diluent is injected into the vacuum space through the injection port 441 to dilute the scraped coating slurry and prevent the coating slurry from accumulating and clogging the vacuum space, injection port 441, and suction port 442; the mixture of diluent and coating slurry is sucked out through the suction port 442.

[0040] The scraper is installed in the vacuum space and extends out of the scraper holder. The scraper holder is provided with an injection port and a suction port that communicate with the vacuum space.

[0041] Furthermore, such as Figure 5As shown, the electrode sheet is conveyed at an angle to the horizontal plane, and the driving direction of the first driving member 200 is adjusted by the mounting bracket 100. The scraper 410 is at a set angle to the electrode sheet, with the set angle range being 70°-90°, and the angle between the scraper 410 and the electrode sheet is adjusted by rotating the slide table 490. When the scraper 410 and the electrode sheet are not perpendicular, the time for negative pressure to be formed between the scraper head and the electrode sheet can be accelerated, making it easier to absorb the removed coating slurry, while preventing material from sticking to the blade of the scraper head.

[0042] like Figure 1 As shown, a first dust collection box 340 is provided below the first mounting plate 300, as... Figure 3 As shown, a second dust collection box 464 is provided below the rotating wheel 461, and a third dust collection box 465 is provided below the connecting plate 463. When the components move, the friction between the components may generate debris and other impurities. All three dust collection boxes are used to collect dust to prevent contamination of the electrode.

[0043] Another embodiment of this utility model discloses a scraping method, including the following steps:

[0044] Step 1: The first driving unit 200 drives at least one scraping assembly 400 to move along the electrode conveying direction at a first speed equal to the electrode conveying speed, so that the scraping assembly 400 and the electrode to be processed remain relatively stationary.

[0045] In this embodiment, before step one, there is an adjustment step: (1) adjusting the driving direction of the first driving member 200 by the mounting bracket 100; (2) adjusting the distance between the multiple scraping components 400 by the adjustment component 320; (3) adjusting the distance between the scraper 410 and the electrode by the manual slide 450; (4) adjusting the angle between the scraper 410 and the electrode by the first rotating slide 491; (5) adjusting the parallelism between the blade of the scraper 410 and the electrode by the second rotating slide 492.

[0046] Step Two: With the scraping assembly 400 and the electrode relatively stationary, the scraper 410 is driven downwards to remove the coating slurry from the electrode. The second drive unit 500 drives the scraping assembly 400 downwards, bringing the scraper 410 closer to the electrode. Simultaneously, the scraping drive unit 430 drives the rotating wheel 461 to rotate, causing the scraper 410 to periodically contact the electrode. This ensures stable contact between the scraper 410 and the electrode, guaranteeing a neat edge in the electrode tab welding area.

[0047] In this embodiment, before step two, the vacuum level inside the scraper holder 440 is adjusted and a diluent is injected into the scraper holder 440. A negative pressure device connected to the suction port 442 sucks out the mixture of diluent and coating slurry from the vacuum space 443.

[0048] Step 3: The first driving component 200 drives the scraping assembly 400 to move along the electrode conveying direction at the same conveying speed as the electrode for a certain period of time.

[0049] In this embodiment, the scraper assembly 400 and the electrode are kept in synchronous motion for a period of time, which prolongs the contact time between the scraper 410 and the electrode, increases the material suction time of the scraper assembly 400, and improves the quality of coating slurry removal.

[0050] The scraping method disclosed in this embodiment also includes a correction step: during the operation of the above steps, when the correction sensor 610 detects the electrode offset, the third driving member 600 drives the scraping assembly 400 to move along the electrode width direction.

[0051] The above embodiments are merely preferred embodiments provided to fully illustrate the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present utility model are all within the protection scope of the present utility model. The protection scope of the present utility model is defined by the claims.

Claims

1. A scraping device for removing coating slurry from an electrode sheet, characterized in that, include: At least one scraping assembly is disposed above the electrode sheet and includes a scraping drive, a scraper seat, and a scraper; wherein the scraper is mounted on the scraper seat, the scraping drive is used to drive the scraper seat to move so that the scraper contacts the electrode sheet, and the scraper seat and the scraping drive are connected by at least one adjusting mechanism to make the blade of the scraper fit against the surface of the electrode sheet.

2. The scraping device as described in claim 1, characterized in that, It also includes a first driving member, which is connected to the scraping assembly and is used to drive the scraping assembly to move in the conveying direction of the electrode sheet.

3. The scraping device as described in claim 1, characterized in that, It also includes a second driving component, the driving direction of which is perpendicular to the electrode plate, for driving the scraping assembly to move up and down.

4. The scraping device according to any one of claims 1-3, characterized in that, It also includes a third driving component, the driving direction of which is the same as the width direction of the electrode sheet, for driving the scraping assembly to move along the width direction of the electrode sheet.

5. The scraping device as described in claim 1, characterized in that, The scraper is at a set angle to the electrode, and the set angle range is 70°-90°.

6. The scraping device as described in claim 1, characterized in that, It also includes a cam assembly, which includes a rotating wheel, a cam, and a connecting plate. The scraper drive is a rotary motor. The rotating wheel is connected to the drive end of the scraper drive. The connecting plate is slidably mounted on a third mounting plate. The scraper seat and the cam are respectively mounted on both ends of the connecting plate. The outer circumferential surface of the rotating wheel is provided with a cam groove that cooperates with the cam.

7. The scraping device as described in claim 6, characterized in that, The adjustment mechanism includes a first rotary slide and a second rotary slide. The base of the first rotary slide is mounted on the connecting plate via a slide mounting plate. The rotating end of the first rotary slide is connected to an adjustment seat. The rotation axis of the first rotary slide is parallel to the electrode width direction. The base of the second rotary slide is connected to the first rotary slide via an adjustment seat. The rotating end of the second rotary slide is connected to a scraper seat. The rotation axis of the second rotary slide is parallel to the electrode conveying direction.

8. The scraping device as described in claim 6, characterized in that, The scraper drive is also equipped with a distance sensor, and the connecting plate is equipped with a calibration block that cooperates with the distance sensor.

9. The scraping device as described in claim 6, characterized in that, A compression spring plate is provided at the lower end of the third mounting plate, and a buffer spring is provided between the compression spring plate and the connecting plate.

10. The scraping device as claimed in claim 1, characterized in that, The scraper holder has a vacuum space with its opening facing downwards. The scraper is installed in the vacuum space and extends out of the scraper holder through the opening. The scraper holder is provided with an injection port and a suction port that are connected to the vacuum space. The injection port is used to inject diluent into the vacuum space, and the suction port is used to discharge the mixture of diluent and coating slurry.

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