Continuous controllable thinning coating baffle

Abstract

A continuous and controllable thinning coating baffle belongs to the technical field of battery preparation, and adopts the specific scheme that the continuous and controllable thinning coating baffle comprises a main baffle, a guide sleeve and a plurality of regulation and control baffles, arc-shaped grooves with consistent radians are formed in the front end of the main baffle and the front ends of the regulation and control baffles; the radian of the arc-shaped grooves is the same as that of the circumferential face of the coating roller, a plurality of regulation and control baffles are stacked together to be placed in a guide sleeve, the guide sleeve is fixed to the inner side wall of the main baffle, and an adjusting device is arranged at the rear ends of the regulation and control baffles. The adjusting device controls the front-back moving position of each adjusting and controlling baffle so that the arc-shaped grooves in the front ends of the adjusting and controlling baffles can present different chamfering angles. According to the invention, halfway shutdown is not needed, the chamfering angle of the baffle plate can be adjusted and controlled at any time, and the two edges of the coating roller can be thinned, so that the problems that the two edges of a pole piece are thicker and bulged are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of battery preparation, and in particular relates to a continuously controllable thinning coating baffle. Background Art

[0002] Since the foam baffles on both sides of the transfer coater's coating roller are set vertically, slurry will be retained at the boundaries of the coating roller during the electrode coating process, causing the slurry coated on both sides to be thicker. After the electrode roll is baked, the tail roll will have bulging edges, cracked edges, or even broken tape, which reduces the production yield. Frequent roll changes affect the coating production efficiency. In addition, each coating is affected by many factors such as slurry viscosity and coating thickness. In order to achieve the expected thinning thickness, it is necessary to stop the machine and remove the baffle to readjust the chamfer angle and chamfer plane area, which seriously affects production efficiency. If the coating process does not stop, the process of adjusting the chamfer angle is cumbersome and the operation difficulty increases. Summary of the invention

[0003] In order to improve the problem of thickening on both sides and bulging edges during electrode coating, the present invention provides a continuously controllable thinning coating baffle, which can adjust the chamfer angle at any time and arbitrarily without stopping the machine.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A continuously controllable thinning coating baffle comprises a main baffle, a guide sleeve and a plurality of regulating baffles, wherein the front end of the main baffle and the front ends of the plurality of regulating baffles are provided with arc grooves with the same curvature, and the curvature of all the arc grooves is the same as the curvature of the circumferential surface of a coating roller, the plurality of regulating baffles are stacked together and the rear ends are placed inside the guide sleeve, the guide sleeve is fixed on the inner side wall of the main baffle, and the rear ends of the plurality of regulating baffles are provided with an adjusting device, and the adjusting device is fixed on the inner side wall of the main baffle, and the adjusting device controls the forward and backward movement position of each regulating baffle so that the arc grooves at the front ends of the plurality of regulating baffles present different chamfer angles.

[0006] Preferably, the adjustment device includes a limit plate and a plurality of bolts, wherein the limit plate is fixed on the inner wall of the main baffle and is located behind the guide sleeve, and the plurality of bolts horizontally pass through the corresponding limit holes on the limit plate and are connected one-to-one with the rear ends of the plurality of regulating baffles, and the forward and backward movement position of the corresponding regulating baffle is controlled by screwing each bolt.

[0007] As a preferred arrangement of the adjustment device, a threaded hole is provided at the rear end of each regulating baffle, and the plurality of bolts are threadedly connected in the threaded holes of the corresponding regulating baffles. A limit ring is fixedly provided on the screw rod of each bolt, and the limit ring is located in front of the limit plate. The distance between the limit ring and the bolt head is the thickness of the limit plate.

[0008] As a preferred arrangement of the adjustment device, the tail ends of the screw rods of the plurality of bolts are fixedly connected to the plurality of regulating baffles, and each bolt is threadedly connected to the corresponding limiting hole.

[0009] Preferably, the adjusting device is a plurality of servo motors or a plurality of stepper motors, and the plurality of servo motors or a plurality of stepper motors are arranged and connected with a plurality of regulating baffles in a one-to-one correspondence, so as to control the linear movement of the plurality of regulating baffles in the front-rear direction.

[0010] Furthermore, strip holes are horizontally arranged at the same position of the plurality of regulating baffles, and guide bolts pass through the strip holes to be fixedly connected to the main baffle.

[0011] Furthermore, a protractor is fixedly arranged above the guide sleeve.

[0012] As a preferred arrangement for facilitating the sliding setting of the regulating baffle, the inner upper surface and the bottom surface of the guide sleeve are both provided with a plurality of guide grooves, and the upper and lower ends of the plurality of regulating baffles are engaged in the corresponding guide grooves.

[0013] As a preferred arrangement for facilitating the sliding setting of the regulating baffle, two adjacent regulating baffles maintain contact.

[0014] Furthermore, an arc-shaped sealing foam is arranged in front of the main baffle, the curvature of the arc-shaped sealing foam is the same as the curvature of the arc-shaped groove, and the arc-shaped sealing foam is fixedly arranged at the arc-shaped groove of the main baffle.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] In the coating process, the present invention only needs to control the independent regulating baffles to extend and retract to a predetermined position through the regulating device so that a plurality of regulating baffles present a predetermined angle, and the adjusted angle can be accurately measured from the rear end of the regulating baffle. The present invention can adjust the chamfering angle of the regulating baffle at any time without stopping the machine in the middle, and realize the thinning treatment of the two edges of the coating roller, thereby solving the problem of thickening and bulging edges on both sides of the electrode. The regulating method is simple to operate, convenient and fast, and can significantly improve the production yield and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the pole piece surface prepared using a vertical baffle;

[0018] Figure 2 It is a schematic diagram of the surface of the pole piece prepared by using a continuously controllable thinning coating baffle;

[0019] Figure 3 It is a schematic diagram of the structure of a continuously controllable skiving coating baffle;

[0020] Figure 4 It is a schematic diagram of several control baffle structures;

[0021] In the figure: 1. main baffle, 2. guide sleeve, 3. regulating baffle, 4. arc groove, 5. limit plate, 6. bolt, 7. strip hole, 8. guide bolt, 9. bushing. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings and embodiments. Obviously, the described embodiments are only part of the embodiments of the invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] Embodiment 1:

[0024] like Figure 3 and 4 As shown, a continuously controllable thinning coating baffle comprises a main baffle 1, a guide sleeve 2 and a plurality of regulating baffles 3, the front end of the main baffle 1 and the front ends of the plurality of regulating baffles 3 are provided with arc grooves 4 with the same curvature, the curvature of all the arc grooves 4 is the same as the curvature of the circumferential surface of the coating roller and are used in conjunction with the coating roller, the plurality of regulating baffles 3 are stacked together and the rear ends are placed inside the guide sleeve 2, the guide sleeve 2 is fixed on the inner side wall of the main baffle 1, the guide sleeve 2 plays a guiding role to ensure that the plurality of regulating baffles 3 move in a straight line, and the rear ends of the plurality of regulating baffles 3 are provided with an adjusting device, the adjusting device controls the forward and backward movement position of each regulating baffle 3 so that the arc grooves at the front ends of the plurality of regulating baffles 3 present different chamfer angles.

[0025] Furthermore, the adjustment device includes a limit plate 5 and a plurality of bolts 6, wherein the limit plate 5 is fixed on the inner wall of the main baffle 1 and is located behind the guide sleeve 2, and the plurality of bolts 6 horizontally pass through the corresponding limit holes on the limit plate 5 and are connected one by one with the rear ends of the plurality of regulating baffles 3, and the forward and backward movement position of the corresponding regulating baffle 3 is controlled by screwing each bolt 6.

[0026] Furthermore, a threaded hole is provided at the rear end of each regulating baffle 3, and the plurality of bolts 6 are threadedly connected in the threaded holes of the corresponding regulating baffle 3. A limit clamp is fixedly provided on the screw rod of each bolt 6, and the limit clamp is located in front of the limit plate 5. The distance between the limit clamp and the bolt head is the thickness of the limit plate 5. The function of the limit clamp is to fix the position of the bolt head so that the bolt head can only rotate but cannot move forward and backward. When the bolt head is screwed, the corresponding regulating baffle 3 can move forward and backward. During the coating process, the moving position of the regulating baffle 3 can be adjusted according to the actual situation, so as to adjust the chamfer angle and change the slurry retention capacity of the edge.

[0027] Furthermore, the same positions of the plurality of regulating baffles 3 are horizontally provided with strip holes 7, and the guide bolts 8 pass through the strip holes 7 and are fixedly connected to the main baffle 1. The strip holes 7 and the guide bolts 8 guide the regulating baffles 3, and a bushing 9 is sleeved on the screw of the guide bolt 8. The length of the bushing 9 is the same as the total thickness of the plurality of regulating baffles 3, so as to avoid the problem that the plurality of regulating baffles 3 are locked and cannot move after the guide bolts 8 are tightened. Another function of the bushing 9 is to ensure that the plurality of regulating baffles 3 slide smoothly forward and backward.

[0028] Furthermore, a protractor is fixedly provided above the guide sleeve 2, and the angle of the chamfer of the arc-shaped groove at the front end is reflected by measuring the angle formed by the rear ends of a plurality of regulating baffles 3.

[0029] Furthermore, the inner upper surface and bottom surface of the guide sleeve 2 are both provided with a plurality of guide grooves in the front-to-back direction, and the upper and lower ends of the plurality of regulating baffles 3 are engaged in the corresponding guide grooves and move in the front-to-back direction in the guide grooves.

[0030] Furthermore, an arc-shaped sealing foam is arranged in front of the main baffle 1, and the curvature of the arc-shaped sealing foam is the same as the curvature of the arc-shaped groove 4. The arc-shaped sealing foam is fixedly arranged in the arc-shaped groove 4 of the main baffle 1, and the arc-shaped sealing foam is engaged on the coating roller to play a sealing role to prevent leakage of slurry.

[0031] Preferably, the material of the plurality of regulating baffles 3 is steel.

[0032] When preparing for coating, add slurry, and the arc-shaped sealing foam on the main baffles 1 on both sides is used for sealing. After pre-coating, measure the thickness on both sides and the thickness in the middle, compare and calculate the difference, which is the thinning amount. Adjust the position of the baffle 3 according to actual requirements to perform real-time thinning processing.

[0033] By continuously changing the chamfer angle of the baffles on both sides of the coating roller, the retention capacity is changed to achieve the purpose of thinning both sides of the electrode. It is effectively controllable through practice, which brings convenience to the coating adjustment process, significantly improves the coating speed and production efficiency, and has good economic efficiency.

[0034] Figure 1 The baffles in the prior art are used, and the two sides of the prepared pole pieces are seriously bulging. Figure 2 The continuously controllable thinning coating baffle described in Example 1 is used. According to the actual situation, the chamfer angles of the plurality of regulating baffles 3 are changed. The prepared pole piece has no bulging edge phenomenon on both sides and is as smooth as the middle of the pole piece.

[0035] Embodiment 2:

[0036] A continuously controllable thinning coating baffle comprises a main baffle 1, a guide sleeve 2 and a plurality of regulating baffles 3, wherein the front end of the main baffle 1 and the front ends of the plurality of regulating baffles 3 are provided with arc grooves 4 with the same curvature, the curvature of all the arc grooves 4 is the same as the curvature of the circumferential surface of the coating roller and are used in conjunction with the coating roller, the plurality of regulating baffles 3 are stacked together and the rear ends are placed inside the guide sleeve 2 to ensure that the plurality of regulating baffles 3 move in a straight line, the guide sleeve 2 is fixed on the inner side wall of the main baffle 1, and the rear ends of the plurality of regulating baffles 3 are provided with an adjusting device, which controls the forward and backward movement position of each regulating baffle 3 so that the arc grooves at the front ends of the plurality of regulating baffles 3 present different chamfer angles.

[0037] Furthermore, the adjusting device 3 includes a limit plate 5 and a plurality of bolts 6, wherein the limit plate 5 is fixed on the inner wall of the main baffle 1 and is located behind the guide sleeve 2, and the plurality of bolts 6 horizontally pass through the corresponding limit holes on the limit plate 5 and are connected one by one with the rear ends of the plurality of regulating baffles 3, and the forward and backward movement position of the corresponding regulating baffle 3 is controlled by screwing each bolt 6.

[0038] Furthermore, the tail ends of the screw rods of the plurality of bolts 6 are fixedly connected to the plurality of regulating baffles 3, and each bolt 6 is threadedly connected to the corresponding limiting hole. By screwing the bolts, the plurality of regulating baffles 3 in front are driven to move forward and backward.

[0039] Furthermore, the same positions of the plurality of regulating baffles 3 are horizontally provided with strip holes 7, and the guide bolts 8 pass through the strip holes 7 and are fixedly connected to the main baffle 1. The strip holes 7 and the guide bolts 8 guide the regulating baffles 3, and a bushing 9 is sleeved on the screw of the guide bolt 8. The length of the bushing 9 is the same as the total thickness of the plurality of regulating baffles 3, so as to avoid the problem that the plurality of regulating baffles 3 are locked and cannot move after the guide bolts 8 are tightened. Another function of the bushing 9 is to ensure that the plurality of regulating baffles 3 slide smoothly forward and backward.

[0040] Furthermore, a protractor is fixedly disposed above the guide sleeve 2 .

[0041] Furthermore, two adjacent regulating baffles 3 maintain contact, but need to ensure that they do not interfere with each other when sliding back and forth.

[0042] Furthermore, an arc-shaped sealing foam is arranged in front of the main baffle plate 1 , the curvature of the arc-shaped sealing foam is the same as the curvature of the arc-shaped groove 4 , and the arc-shaped sealing foam is fixedly arranged at the arc-shaped groove 4 of the main baffle plate 1 .

[0043] Embodiment 3:

[0044] A continuously controllable thinning coating baffle comprises a main baffle 1, a guide sleeve 2 and a plurality of regulating baffles 3, wherein the front end of the main baffle 1 and the front end of the plurality of regulating baffles 3 are provided with arc grooves 4 with the same curvature, and the curvature of all the arc grooves 4 is the same as the curvature of the circumferential surface of the coating roller, the plurality of regulating baffles 3 are stacked together and the rear end is placed inside the guide sleeve 2, and the guide sleeve 2 is fixed on the inner side wall of the main baffle 1, and the rear end of the plurality of regulating baffles 3 is provided with an adjusting device, and the adjusting device controls the forward and backward movement position of each regulating baffle 3 so that the arc grooves at the front end portions of the plurality of regulating baffles 3 present different chamfer angles.

[0045] Furthermore, the regulating device is a plurality of servo motors or a plurality of stepper motors, and the plurality of servo motors or a plurality of stepper motors are arranged and connected with a plurality of regulating baffles 3 in a one-to-one correspondence, and are used to control the linear motion of the plurality of regulating baffles 3 in the front-rear direction. The structural form of the servo motor and the stepper motor for controlling the linear motion of the controlled component belongs to the prior art.

[0046] Furthermore, the plurality of regulating baffles 3 are horizontally provided with strip holes 7, and the guide bolts 8 pass through the strip holes 7 and are fixedly connected to the main baffle 1. The strip holes 7 and the guide bolts 8 guide the regulating baffles 3, and a bushing 9 is sleeved on the screw of the guide bolt 8. The length of the bushing 9 is the same as the total thickness of the plurality of regulating baffles 3, so as to avoid the problem that the plurality of regulating baffles 3 are locked and cannot move after the guide bolts 8 are tightened. Another function of the bushing 9 is to ensure that the plurality of regulating baffles 3 slide smoothly forward and backward.

[0047] Furthermore, a protractor is fixedly disposed above the guide sleeve 2 .

[0048] Furthermore, the inner upper surface and the bottom surface of the guide sleeve 2 are both provided with a plurality of guide grooves, and the upper and lower ends of the plurality of regulating baffles 3 are engaged in the corresponding guide grooves and move along the front-rear direction of the guide grooves.

[0049] Furthermore, an arc-shaped sealing foam is arranged in front of the main baffle plate 1 , the curvature of the arc-shaped sealing foam is the same as the curvature of the arc-shaped groove 4 , and the arc-shaped sealing foam is fixedly arranged at the arc-shaped groove 4 of the main baffle plate 1 .

[0050] During the specific work, after adjusting the chamfer angle of two continuously controllable thinning coating baffles, they are installed on both sides of the coating roller, and slurry is added to the middle of the coating roller for pre-coating. After passing through the oven, the thickness on both sides and the middle thickness of the electrode are measured, and the difference is calculated by comparison, which is the thinning amount. The forward and backward moving position of each regulating baffle 3 is adjusted according to the thinning situation, thereby changing the chamfer angles of several regulating baffles 3, and recording the viscosity, solid content and moving distance of each regulating baffle 3 of the slurry, so that the adaptation parameters can be quickly adjusted to the next time it is used.

[0051] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A continuously controllable skived coating baffle, characterized in that: The invention comprises a main baffle (1), a guide sleeve (2) and a plurality of regulating baffles (3), wherein the front end of the main baffle (1) and the front ends of the plurality of regulating baffles (3) are provided with arc grooves (4) with the same curvature, and the curvature of all the arc grooves (4) is the same as the curvature of the circumferential surface of the coating roller, the plurality of regulating baffles (3) are stacked together and the rear ends are placed inside the guide sleeve (2), the guide sleeve (2) is fixed on the inner side wall of the main baffle (1), and the rear ends of the plurality of regulating baffles (3) are provided with adjusting devices, and the adjusting devices control the forward and backward movement position of each regulating baffle (3) so that the arc grooves at the front ends of the plurality of regulating baffles (3) present different chamfer angles.

2. The continuously controllable skived coating baffle according to claim 1, characterized in that: The adjustment device comprises a limit plate (5) and a plurality of bolts (6); the limit plate (5) is fixed on the inner wall of the main baffle (1) and is located behind the guide sleeve (2); the plurality of bolts (6) horizontally pass through corresponding limit holes on the limit plate (5) and are connected to the rear ends of the plurality of regulating baffles (3) in a one-to-one correspondence; and the forward and backward movement position of the corresponding regulating baffle (3) is controlled by screwing each bolt.

3. A continuously controllable skived coating baffle according to claim 2, characterized in that: A threaded hole is provided at the rear end of each regulating baffle (3), and the plurality of bolts (6) are threadedly connected in the threaded holes of the corresponding regulating baffles (3). A limit clamp is fixedly provided on the screw rod of each bolt (6), and the limit clamp is located in front of the limit plate (5), and the distance between the limit clamp and the bolt head is the thickness of the limit plate (5).

4. The continuously controllable skived coating baffle according to claim 2, characterized in that: The screw tails of the plurality of bolts (6) are fixedly connected to the plurality of regulating baffles (3), and each bolt (6) is threadedly connected to a corresponding limiting hole.

5. The continuously controllable skived coating baffle according to claim 1, characterized in that: The regulating devices are a plurality of servo motors or a plurality of stepper motors, which are arranged and connected in a one-to-one correspondence with a plurality of regulating baffles (3) and are used to control the linear movement of the plurality of regulating baffles (3) in the front-rear direction.

6. The continuously controllable skived coating baffle according to claim 1, characterized in that: The plurality of regulating baffles (3) are all horizontally provided with strip holes (7) at the same position, and the guide bolts (8) pass through the strip holes (7) and are fixedly connected to the main baffle (1).

7. The continuously controllable skived coating baffle according to claim 1, characterized in that: A protractor is fixedly arranged above the guide sleeve (2).

8. The continuously controllable skived coating baffle according to claim 1, characterized in that: The inner upper surface and the bottom surface of the guide sleeve (2) are both provided with a plurality of guide grooves, and the upper and lower ends of the plurality of regulating baffles (3) are engaged in the corresponding guide grooves and move along the front-rear direction of the guide grooves.

9. The continuously controllable skived coating baffle according to claim 1, characterized in that: Two adjacent regulating baffles (3) are kept in contact.

10. The continuously controllable skived coating baffle according to claim 1, characterized in that: An arc-shaped sealing foam is arranged in front of the main baffle (1); the arc of the arc-shaped sealing foam is the same as the arc of the arc-shaped groove (4); and the arc-shaped sealing foam is fixedly arranged at the arc-shaped groove (4) of the main baffle (1).

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