Device for preventing thickness difference of coated plate rolled by smoothing roller

Abstract

The application discloses a device for preventing thickness difference of flat roller rolling and coating plate, which comprises a machine frame, a flat roller is installed on the top of the machine frame, driving rollers, driven rollers and tensioning rollers are arranged on the inner sides of the machine frame respectively, conveying belts are transmissionally connected to the outer sides of the driving rollers, the driven rollers and the tensioning rollers, vacuum suction covers are additionally arranged on the inner sides of the conveying belts, fixed side plates are installed on the two sides of the vacuum suction covers, and the top of the fixed side plates is fixed on the two sides of the top of the inner cavity of the machine frame, the vacuum suction covers are arranged below the conveying belts, the inside of the vacuum suction covers is in a negative pressure state, the conveying belts are attracted and bent downwards, the conveying belts are attached to the backing plates, arc bending is formed, the overall thickness of the green plate is kept consistent under the extrusion of the flat roller, and the thickness difference of the green plate is avoided when the traditional rolling device is used for rolling the green plate, so that the efficiency of the battery in the later period is affected.

Description

Technical Field

[0001] This invention relates to the field of lead-acid battery electrode plate manufacturing technology, specifically to a device for preventing thickness differences in electrode plates coated by a flat roller. Background Technology

[0002] Electric bicycles are lightweight and practical, and are increasingly used by urban residents. With the development of technology, the automation level of lead-acid battery production is becoming higher and higher, as evidenced by the widespread use of four-stage technology equipment. However, there are still some areas in the development and use of automated equipment that are not yet optimal, which are gradually becoming apparent in production. Because the slitting blade is fixed on the round roller, the coated plates are slightly bent after slitting, requiring subsequent leveling rollers to flatten them.

[0003] After slitting, the flattening rollers roll the plates onto the conveyor belt. The plates are driven by the conveyor belt and rolled by the flattening rollers to flatten their surfaces. During rolling, the flattening rollers press down on the conveyor belt, which follows the rollers in a downward arc shape. This results in no gap between the flattening rollers and the conveyor belt. The wet plate thickness of the raw plates is greater than 2.0 mm, while the grid thickness is only 0.8 mm. There is 0.6 mm of wet lead paste on both the top and bottom edges of the grid, with a moisture content of 10%. The wet lead paste is relatively soft and first enters the lead paste on the edge of the grid during rolling. It is subjected to rolling pressure, causing the lead paste to be squeezed and pushed. This leads to a slight accumulation of the squeezed lead paste, resulting in a deviation in the thickness of the plate surface. When the plates are stacked together, the thickness difference between the two sides is obvious. After assembling the battery, such plates will cause uneven pressure on the battery electrode group, affecting the battery life. Traditional plate flattening devices lack structures to prevent thickness differences. Summary of the Invention

[0004] The purpose of this invention is to provide a device for preventing thickness differences in the continuous coating plates when the flat roller is rolling the plates. By providing a vacuum suction hood below the conveyor belt, the conveyor belt can be bent downwards, and the uneven force will not cause uneven thickness of the plates when the flat roller is rolling the plates, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a device for preventing thickness differences in continuously coated electrode plates by a leveling roller, comprising a machine frame, a leveling roller mounted on the top of the machine frame, a drive roller, a driven roller, and a tensioning roller respectively arranged on the inner side of the machine frame, a conveyor belt connected to the outer sides of the drive roller, driven roller, and tensioning roller, a vacuum suction hood installed on the inner side of the conveyor belt, fixed side plates installed on both sides of the vacuum suction hood, the top of the fixed side plates fixed to both sides of the top of the inner cavity of the machine frame, a vacuum connector connected to the bottom of the vacuum suction hood, sealing shafts installed on the front and rear ends of the top of the vacuum suction hood, the upper surface of the sealing shafts fitting against the inner wall of the conveyor belt, a tensioning component for adjusting the movement of the tensioning roller arranged in the inner cavity of the machine frame, an adjusting component for adjusting the downward bending arc of the conveyor belt arranged on the inner side of the vacuum suction hood, and a liner plate arranged inside the vacuum suction hood, the liner plate having multiple sets of circular holes.

[0006] Preferably, the tensioning assembly includes a support plate disposed at the bottom of the inner cavity of the machine frame, the two ends of the support plate being fixed to the inner wall of the machine frame, an electric push rod disposed below the support plate, the electric push rod being installed at the center of the bottom of the support plate, the piston rod of the electric push rod passing through the support plate and being fixed to a mounting frame, and the two ends of the tensioning roller being rotatably connected to the mounting frame through bearings.

[0007] Preferably, the adjustment assembly includes a first fixing plate fixed to both the front and rear ends of the vacuum suction hood. The first fixing plate has a first through hole, and the inner cavity of the first through hole is provided with a distance adjustment rod. The two ends of the distance adjustment rod extend to the outside of the first fixing plate and are threaded, and are threadedly connected to an adjustment rod nut.

[0008] Preferably, a second fixing plate is welded outward on both sides of the front and rear plates of the vacuum suction hood. The second fixing plate has a second through hole, and a mounting bolt is installed in the second through hole. The mounting bolt passes through the second fixing plate and is threadedly connected to the fixing side plate.

[0009] Preferably, the adjustment assembly includes a first fixing plate fixed to both the front and rear ends of the vacuum suction hood. The first fixing plate has a first through hole, and the inner cavity of the first through hole is provided with a distance adjustment rod. The two ends of the distance adjustment rod extend to the outside of the first fixing plate and are threaded, and are threadedly connected to an adjustment rod nut.

[0010] Preferably, the vacuum suction hood is located inside the fixed side plate, and the side dimension of the fixed side plate is larger than the side dimension of the vacuum suction hood.

[0011] Preferably, the front and rear ends of the top of the vacuum suction hood are provided with grooves, the sealing shaft rotates in the grooves through bearings, and the sealing shaft and the vacuum suction hood are sealed by a first foam board.

[0012] Preferably, both the driving roller and the driven roller are rotatably connected to the inner wall of the machine frame via bearings, and a driving motor is fixed to the side wall of the machine frame. The output shaft of the driving motor passes through the inner side of the machine frame and is fixedly connected to the driving roller.

[0013] Preferably, limit rods are fixed on both sides of the bottom of the mounting frame, the top of the limit rod passes through the support plate and is fixed with a limit ring, and a connecting spring is sleeved on the outside of the limit rod, with the two ends of the connecting spring connected to the limit ring and the support plate respectively.

[0014] Preferably, a second foam board is adhered to both sides of the vacuum suction hood, and the second foam board is attached to the inner wall of the fixed side plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. This invention provides a vacuum suction hood below the conveyor belt, which creates a negative pressure inside the hood. This causes the conveyor belt to bend downwards and adhere to the liner, forming an arc-shaped bend. Under the pressure of the flattening roller, the overall thickness of the green electrode plate remains consistent, avoiding the uneven thickness of the green electrode plate caused by traditional rolling devices, which affects the efficiency of the battery later.

[0017] 2. The present invention facilitates the adjustment of the distance between the front and rear of the top of the vacuum suction hood by means of the cooperation between the distance adjustment rod and the adjustment rod nut, and adjusts the downward curvature of the conveyor belt by means of the cooperation between the sealing shaft and the liner. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a side view cross-sectional three-dimensional structural schematic diagram of the machine frame of the present invention;

[0020] Figure 3 This is a three-dimensional structural diagram of the tensioning component and tensioning roller of the present invention;

[0021] Figure 4 This is a three-dimensional structural diagram showing the disassembled vacuum suction cover and fixed side plate of the present invention;

[0022] Figure 5 This is a three-dimensional structural schematic diagram of the vacuum suction hood of the present invention;

[0023] Figure 6This is a three-dimensional structural diagram of the installation of the leveling roller of the present invention.

[0024] The diagram shows the following components: 1. Machine frame; 2. Leveling roller; 201. Roller; 202. Fixed shaft head; 3. Drive roller; 4. Driven roller; 5. Tensioning roller; 6. Conveyor belt; 7. Vacuum suction hood; 8. Fixed side plate; 9. Vacuum connector; 10. Sealing shaft; 11. Tensioning assembly; 111. Support plate; 112. Electric push rod; 113. Mounting frame; 12. Adjustment assembly; 121. First fixed plate; 122. Distance adjusting rod; 123. Adjusting rod nut; 13. Liner plate; 14. Second fixed plate; 15. Mounting bolt; 16. Screw; 17. Fixing nut; 18. Limiting nut; 19. Compression spring; 20. Groove; 21. First foam board; 22. Drive motor; 23. Limiting rod; 24. Connecting spring; 25. Second foam board. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] This invention provides, for example Figures 1-6 The device shown is for preventing thickness differences of coated plates by rolling with a leveling roller. It includes a machine frame 1, a leveling roller 2 installed on the top of the machine frame 1, a drive roller 3, a driven roller 4 and a tensioning roller 5 respectively arranged on the inner side of the machine frame 1, a conveyor belt 6 connected to the outer side of the drive roller 3, driven roller 4 and tensioning roller 5, a vacuum suction hood 7 installed on the inner side of the conveyor belt 6, fixed side plates 8 installed on both sides of the vacuum suction hood 7, the top of the fixed side plates 8 fixed to both sides of the top of the inner cavity of the machine frame 1, a vacuum connector 9 connected to the bottom of the vacuum suction hood 7, a sealing shaft 10 installed on the front and rear ends of the top of the vacuum suction hood 7, the upper surface of the sealing shaft 10 being in contact with the inner wall of the conveyor belt 6, a tensioning component 11 for adjusting the movement of the tensioning roller 5 arranged in the inner cavity of the machine frame 1, an adjusting component 12 for adjusting the downward bending arc of the conveyor belt 6 arranged on the inner side of the vacuum suction hood 7, and a liner 13 arranged inside the vacuum suction hood 7, with multiple sets of round holes opened on the liner 13.

[0027] By setting a vacuum suction hood 7 below the conveyor belt 6, the vacuum suction hood 7 is in a negative pressure state, thereby attracting the conveyor belt 6 downward and bending it so that the conveyor belt 6 adheres to the liner plate 13 and forms an arc bend. Under the extrusion of the flat roller 2, the overall thickness of the green electrode plate is kept consistent, avoiding the uneven thickness of the green electrode plate caused by the traditional rolling device when rolling the green electrode plate, which affects the efficiency of the battery in the later stage.

[0028] The tensioning assembly 11 includes a support plate 111 located at the bottom of the inner cavity of the machine frame 1. Both ends of the support plate 111 are fixed to the inner wall of the machine frame 1. An electric push rod 112 is located below the support plate 111 and is installed at the center of the bottom of the support plate 111. The piston rod of the electric push rod 112 passes through the support plate 111 and is fixed to a mounting frame 113. Both ends of the tensioning roller 5 are rotatably connected to the mounting frame 113 through bearings and are installed on the support plate 111 by the electric push rod 112. The tensioning roller 5 is then adjusted up and down using the mounting frame 113 to adjust the tension of the conveyor belt 6 and ensure that the conveyor belt 6 can transport the electrode plates.

[0029] The adjustment assembly 12 includes a first fixing plate 121 fixed on both sides of the front and rear ends of the vacuum suction hood 7. The first fixing plate 121 has a first through hole, and the inner cavity of the first through hole is provided with a distance adjustment rod 122. The two ends of the distance adjustment rod 122 extend to the outside of the first fixing plate 121 and are threaded, and are threadedly connected to the adjustment rod nut 123. By cooperating with the thread on the distance adjustment rod 122 and the adjustment rod nut 123, the distance between the front and rear first fixing plates 121 can be adjusted, which facilitates the adjustment of the distance at the opening at the top of the vacuum suction hood 7 and the adjustment of the downward curvature of the conveyor belt 6, so as to avoid rolling the substrates of different thicknesses.

[0030] The front and rear plates of the vacuum suction hood 7 are welded with second fixing plates 14 on both sides. The second fixing plates 14 have second through holes and mounting bolts 15 are installed in the second through holes. The mounting bolts 15 pass through the second fixing plates 14 and are threadedly connected to the fixing side plate 8. By having the mounting bolts 15 pass through the second fixing plates 14, it is convenient to fix the vacuum suction hood 7 and the fixing side plate 8 from the lower end of the vacuum suction hood 7, while not affecting the distance adjustment at the upper opening of the vacuum suction hood 7.

[0031] The adjustment assembly 12 includes a first fixing plate 121 fixed on both sides of the front and rear ends of the vacuum suction hood 7. The first fixing plate 121 has a first through hole, and the inner cavity of the first through hole is provided with a distance adjustment rod 122. The two ends of the distance adjustment rod 122 extend to the outside of the first fixing plate 121 and have threads with a length of not less than 80 mm. The adjustment rod nut 123 is threadedly connected to the adjustment rod nut 123. The screw 16 passes through the fixed shaft head 202 to facilitate the limiting of the roller 201 of the flattening roller 2, ensuring that the roller 201 is located directly above the vacuum suction hood 7. Then, the fixing nut 17 and the limiting nut 18 can limit the position of the flattening roller 2. With the help of the compression spring 19, the flattening roller 2 is prevented from being pressed on the conveyor belt 6 by the spring pressure when there is no green plate being conveyed.

[0032] The vacuum suction hood 7 is located inside the fixed side plate 8. The side of the fixed side plate 8 is 40-50mm larger than the side of the vacuum suction hood 7. By limiting the side dimensions of the vacuum suction hood 7 and the fixed side plate 8, the fixed side plate 8 can seal both sides of the vacuum suction hood 7 to ensure airtightness.

[0033] The front and rear ends of the top of the vacuum suction hood 7 are provided with grooves 20. The sealing shaft 10 rotates in the grooves 20 through bearings. The sealing shaft 10 and the vacuum suction hood 7 are sealed by the first foam board 21. By providing grooves 20 at the front and rear ends of the top of the vacuum suction hood 7, the connection between the sealing shaft 10 and the vacuum suction hood 7 is ensured. The sealing shaft 10 and the vacuum suction hood 7 are sealed by the first foam board 21. Combined with the fit between the sealing roller and the conveyor belt 6, the sealing performance of the vacuum suction hood 7 is ensured. When the vacuum suction hood 7 is in a negative pressure state, it can adsorb the conveyor belt 6, causing the conveyor belt 6 to bend downward.

[0034] Both the drive roller 3 and the driven roller 4 are rotatably connected to the inner wall of the machine frame 1 via bearings. The drive motor 22 is fixed to the side wall of the machine frame 1. The output shaft of the drive motor 22 passes through the inner side of the machine frame 1 and is fixedly connected to the drive roller 3. The drive roller 3 is driven to rotate by the drive motor 22. Then, under the support of the drive roller 3, the driven roller 4 and the tension roller 5, the rotation of the drive roller 3 can drive the conveyor belt 6 to rotate, thus conveying the green plate.

[0035] Limiting rods 23 are fixed on both sides of the bottom of the mounting frame 113. The top of the limiting rod 23 passes through the support plate 111 and is fixed with a limiting ring. A connecting spring 24 is sleeved on the outside of the limiting rod 23. The two ends of the connecting spring 24 are connected to the limiting ring and the support plate 111 respectively. By setting the limiting rod 23 to pass through the support plate 111, it is convenient to limit the mounting frame 113 and prevent the mounting frame 113 from shaking during the up and down movement, which would affect the tensioning effect of the tensioning roller 5 on the conveyor belt 6. At the same time, the connecting spring 24 can assist in the up and down movement adjustment of the mounting frame 113.

[0036] The vacuum suction hood 7 has a second foam board 25 bonded to both sides. The second foam board 25 is attached to the inner wall of the fixed side plate 8. The cooperation of the second foam board 25 improves the sealing between the vacuum suction hood 7 and the fixed side plate 8.

[0037] In practical use, the drive motor 22 is started, which drives the drive roller 3 to rotate. Then, the electric push rod 112 drives the mounting frame 113 to move downward, so that the tensioning roller 5 tensions the conveyor belt 6. Subsequently, the conveyor belt 6 rotates under the cooperation of the drive roller 3, the driven roller 4, and the tensioning roller 5 to transport the green electrode plate. When the green electrode plate is transported to the bottom of the flattening roller 2, the conveyor belt 6 is squeezed downward by the green electrode plate. At the same time, the vacuum suction hood 7 is in contact with the conveyor belt 6 through the sealing shaft 10. When the vacuum connector 9 is used, the vacuum suction hood 7 is in a negative pressure state. Then the conveyor belt 6 bends downward and adheres to the liner 13. Then the green electrode plate passes between the downwardly bent conveyor belt 6 and the flattening roller 2 and is squeezed and flattened by the flattening roller 2. During this process, the rolling pressure of the green electrode plate remains uniform, thereby ensuring that the electrode plate thickness is uniform.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for preventing thickness differences in continuously coated electrode plates by leveling rollers, comprising a machine frame (1), characterized in that: A leveling roller (2) is installed on the top of the machine frame (1). A drive roller (3), a driven roller (4), and a tensioning roller (5) are respectively arranged on the inner side of the machine frame (1). A conveyor belt (6) is connected to the outer side of the drive roller (3), the driven roller (4), and the tensioning roller (5). A vacuum suction hood (7) is installed on the inner side of the conveyor belt (6). Fixed side plates (8) are installed on both sides of the vacuum suction hood (7). The top of the fixed side plates (8) is fixed to both sides of the top of the inner cavity of the machine frame (1). A vacuum connector (9) is connected to the bottom of the vacuum suction hood (7). A sealing shaft (10) is installed on the front and rear ends of the top of the vacuum suction hood (7). The upper surface of the sealing shaft (10) is in contact with the inner wall of the conveyor belt (6). The inner cavity of the machine frame (1) is provided with a tensioning component (11) for adjusting the movement of the tensioning roller (5). The inner side of the vacuum suction hood (7) is provided with an adjustment component (12) for adjusting the downward bending arc of the conveyor belt (6). The vacuum suction hood (7) is also provided with a liner (13). The liner (13) has multiple sets of round holes. When the vacuum suction hood (7) is in a negative pressure state, it will pull the conveyor belt (6) downward and bend it, so that the conveyor belt (6) is in contact with the liner (13) and forms an arc bend. Under the pressure of the flat roller (2), the overall thickness of the green plate is kept consistent.

2. The device for preventing thickness differences in continuously coated electrode plates by leveling rollers according to claim 1, characterized in that: The tensioning assembly (11) includes a support plate (111) located at the bottom of the inner cavity of the machine frame (1). Both ends of the support plate (111) are fixed to the inner wall of the machine frame (1). An electric push rod (112) is provided below the support plate (111). The electric push rod (112) is installed at the center of the bottom of the support plate (111). The piston rod of the electric push rod (112) passes through the support plate (111) and is fixed to a mounting frame (113). Both ends of the tensioning roller (5) are rotatably connected to the mounting frame (113) through bearings.

3. The device for preventing thickness differences in continuously coated electrode plates by leveling rollers according to claim 1, characterized in that: The adjustment assembly (12) includes a first fixing plate (121) fixed on both sides of the front and rear ends of the vacuum suction hood (7). The first fixing plate (121) has a first through hole, and the inner cavity of the first through hole is provided with a distance adjustment rod (122). The two ends of the distance adjustment rod (122) extend to the outside of the first fixing plate (121) and are threaded, and are threadedly connected to an adjustment rod nut (123).

4. The device for preventing thickness differences in continuously coated electrode plates by leveling rollers according to claim 1, characterized in that: The vacuum suction hood (7) has a second fixing plate (14) welded outward on both sides of the front and rear plates. The second fixing plate (14) has a second through hole and a mounting bolt (15) is provided in the second through hole. The mounting bolt (15) passes through the second fixing plate (14) and is threadedly connected to the fixing side plate (8).

5. The device for preventing thickness differences in continuously coated electrode plates by leveling rollers according to claim 1, characterized in that: The leveling roller (2) includes a roller (201) and fixed shaft heads (202) at both ends. Both sides of the top of the machine frame (1) are fixed with screws (16). A third through hole is opened on the fixed shaft head (202). The screw (16) passes through the third through hole and extends upward. A fixed nut (17) and a limiting nut (18) are threaded on the screw (16) from top to bottom. The fixed nut (17) and the limiting nut (18) are located on the upper and lower sides of the fixed shaft head (202). A compression spring (19) is sleeved on the outside of the screw (16). The compression spring (19) is located between the fixed shaft head (202) and the limiting nut (18).

6. The device for preventing thickness differences in continuously coated electrode plates by leveling rollers according to claim 1, characterized in that: The vacuum suction hood (7) is located inside the fixed side plate (8), and the side dimension of the fixed side plate (8) is larger than the side dimension of the vacuum suction hood (7).

7. The device for preventing thickness differences in continuously coated electrode plates by leveling rollers according to claim 1, characterized in that: The front and rear ends of the top of the vacuum suction hood (7) are provided with grooves (20), the sealing shaft (10) rotates in the groove (20) through the bearing, and the sealing shaft (10) and the vacuum suction hood (7) are sealed by the first foam board (21).

8. The device for preventing thickness differences in continuously coated electrode plates by leveling rollers according to claim 1, characterized in that: The driving roller (3) and the driven roller (4) are rotatably connected to the inner wall of the machine frame (1) through bearings. A driving motor (22) is fixed on the side wall of the machine frame (1). The output shaft of the driving motor (22) passes through the inner side of the machine frame (1) and is fixedly connected to the driving roller (3).

9. The device for preventing thickness differences in continuously coated electrode plates by leveling rollers according to claim 2, characterized in that: Limiting rods (23) are fixed on both sides of the bottom of the mounting frame (113). The top of the limiting rod (23) passes through the support plate (111) and is fixed with a limiting ring. A connecting spring (24) is sleeved on the outside of the limiting rod (23). The two ends of the connecting spring (24) are connected to the limiting ring and the support plate (111) respectively.

10. The device for preventing thickness differences in continuously coated electrode plates by leveling rollers according to claim 1, characterized in that: The vacuum suction hood (7) has a second foam board (25) bonded to both sides, and the second foam board (25) is attached to the inner wall of the fixed side plate (8).

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