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CN-121812456-B - Automatic roll-in equipment of pole piece

CN121812456BCN 121812456 BCN121812456 BCN 121812456BCN-121812456-B

Abstract

The invention relates to the technical field of battery manufacturing equipment, in particular to automatic pole piece rolling equipment, wherein a base band passes through a first through hole of a punching mechanism, a second through hole of a rolling mechanism and a third through hole of a thickness measuring mechanism, a blanking piece is punched on an uncoated section of the base band by the punching mechanism, a coating piece is punched on a coating section of the base band by the punching mechanism, a rolling mechanism is used for rolling the coating section of the base band, a weighing mechanism is used for measuring the first weight of the coating piece and the second weight of the blanking piece, the thickness measuring mechanism is used for measuring the first thickness of the coating section and the second thickness of the uncoated section, the target thickness of the coating section after the rolling by the rolling mechanism is calculated, and the rolling pressure of the base band by the rolling mechanism is adjusted in real time according to the target thickness so as to adjust the first thickness of the coating section to be within a target range. According to the automatic pole piece rolling equipment, the pressing force of the rolling mechanism on the coating section can be automatically adjusted, and the coating section with higher quality is manufactured.

Inventors

  • XIA LI
  • LI JIAMING
  • FANG JIAN

Assignees

  • 深圳市科晶智达科技有限公司

Dates

Publication Date
20260508
Application Date
20260311

Claims (7)

  1. 1. The automatic pole piece rolling equipment is characterized by comprising a punching mechanism, a rolling mechanism, a thickness measuring mechanism, a transferring mechanism and a weighing mechanism, wherein the punching mechanism is provided with a first through hole, the rolling mechanism is provided with a second through hole, and the thickness measuring mechanism is provided with a third through hole; The base band sequentially passes through the first through hole, the second through hole and the third through hole, a plurality of coating sections are arranged on the base band at intervals, and an uncoated section is arranged between two adjacent coating sections; the punching mechanism is used for punching a blank sheet in the coating section and punching a coating sheet in the coating section, wherein the areas of the blank sheet and the coating sheet are preset areas; the thickness measuring mechanism is used for measuring a first thickness of the coating section and measuring a second thickness of the uncoated section; the transfer mechanism is used for transferring the blank sheet and the coating sheet on the punching mechanism to the weighing mechanism; The weighing mechanism is used for weighing a first weight of the coating sheet and a second weight of the blank sheet; According to the formula Calculating the target thickness of the coating section after rolling by the rolling mechanism, wherein d is the target thickness, The target compaction density, S is a preset area, d2 is a second thickness, G1 is a first weight, and G2 is a second weight; and adjusting the rolling pressure of the rolling mechanism on the base band in real time according to the target thickness, so as to adjust the first thickness of the coating section to be within a target range.
  2. 2. The automatic pole piece rolling equipment according to claim 1, wherein the punching mechanism comprises a punching seat, a punching driving assembly, a punching base provided with a punching convex part and a punching top block provided with a punching through hole, wherein the punching base is slidably arranged on the punching seat, and the punching driving assembly is arranged on the punching seat and connected with the punching base; The punching driving assembly is used for driving the punching protruding part to enter and exit the punching through hole, so that a coated sheet is punched in the coated section, and a blank sheet is punched in the uncoated section.
  3. 3. The automatic roll-in equipment for pole pieces according to claim 2, wherein the punching driving assembly comprises a punching rotary driving piece, a punching shaft, a rocker arm and a connecting rod which are slidably arranged on the punching seat, wherein the punching shaft is rotatably arranged on the punching seat, and the punching rotary driving piece is arranged on the punching seat and is connected with the punching shaft; One end of the rocker arm is eccentrically and rotatably arranged on the punching shaft, the other end of the rocker arm is rotatably connected with the connecting rod, and one end of the connecting rod, which is far away from the rocker arm, is connected with the punching base.
  4. 4. The automatic pole piece rolling device according to claim 1, wherein the rolling mechanism comprises a supporting box, a rolling seat, a rolling lifting driving piece, a rolling rotation driving piece, a first gear, a second gear, a first pressing roller and a second pressing roller, the rolling seat is installed at the output end of the rolling lifting driving piece, the rolling rotation driving piece is installed on the rolling seat, the first gear is installed at the output end of the rolling rotation driving piece, the second gear is rotatably installed on the supporting box and meshed with the first gear, the first pressing roller is installed on the first gear, the second pressing roller is installed on the second gear, and the second through hole is formed between the first pressing roller and the second pressing roller.
  5. 5. The automatic pole piece rolling equipment according to claim 1, wherein the transfer mechanism comprises a transfer moving driving piece, a transfer lifting driving piece, a transfer plate and a transfer suction nozzle, the transfer lifting driving piece is arranged at the output end of the transfer moving driving piece, the transfer support plate is arranged at the output end of the transfer lifting driving piece, the transfer suction nozzle is arranged on the transfer plate, and the transfer suction nozzle is used for adsorbing the blank piece and the coating piece.
  6. 6. The automatic pole piece rolling equipment according to claim 1, wherein the thickness measuring mechanism comprises a thickness measuring base, a thickness measuring sensor, a thickness measuring lifting driving piece and a pressure head arranged at the output end of the thickness measuring lifting driving piece, and the thickness measuring lifting driving piece and the thickness measuring sensor are arranged on the thickness measuring base; the thickness measuring lifting driving piece is used for driving the pressure head to compress the coating section on the thickness measuring base, and the thickness measuring sensor is used for measuring the thickness of the coating section on the thickness measuring base.
  7. 7. The automatic pole piece rolling device according to claim 1, further comprising a buffer mechanism, a blanking sheet punching mechanism, a blanking conveying mechanism and a blanking transfer mechanism; The buffer mechanism comprises a plurality of buffer rollers which are distributed at intervals, and the blanking punching mechanism is provided with a fourth through hole; The base band sequentially passes through the first through hole, the second through hole, the third through hole and the fourth through hole after bypassing the plurality of buffer rollers; the blanking sheet punching mechanism is used for punching a target electrode sheet on the coating section, and the difference value between the first thickness of the target electrode sheet and the target thickness is within a target range; The blanking transfer mechanism is used for transferring the target electrode plate on the blanking sheet punching mechanism to the blanking conveying mechanism.

Description

Automatic roll-in equipment of pole piece Technical Field The invention relates to the technical field of battery manufacturing equipment, in particular to automatic pole piece rolling equipment. Background Button cells are also called button cells, which are cells with an external dimension similar to that of a small button, and have larger diameter and thinner thickness. With the continuous development of automation technology, more and more manufacturers utilize an automatic assembly machine to complete the assembly work of the button cell. The button cell is composed of a positive electrode shell, a negative electrode shell, a positive electrode plate, a diaphragm, a lithium sheet, a flat pad, an elastic sheet and other parts, and the preparation work of the positive electrode plate and the negative electrode plate is required to be completed before the button cell is assembled, wherein the preparation work of the positive electrode plate and the negative electrode plate is usually a wafer punched from a pole plate belt by a punching mechanism. The punching mechanism punches out the electrode slice on the base band coated with the battery paste, and the coater can coat the battery paste on the base band. In the prior art, a coating machine can only coat battery slurry on a base band according to a preset program, the thickness of the base band coated with the battery slurry is determined, and when the thickness of the base band coated with the battery slurry is unqualified, the coating thickness of the coating machine needs to be manually adjusted, so that the technical problems of low automation degree, inconvenient adjustment and the like exist. Disclosure of Invention The embodiment of the invention provides automatic pole piece rolling equipment, which aims to solve the technical problems that a coating machine is required to be manually adjusted to adjust the thickness of a pole piece belt in the prior art. The automatic pole piece rolling equipment provided by the embodiment of the invention comprises a punching mechanism, a rolling mechanism, a thickness measuring mechanism, a transferring mechanism and a weighing mechanism, wherein the punching mechanism is provided with a first through hole, the rolling mechanism is provided with a second through hole, and the thickness measuring mechanism is provided with a third through hole; The base band sequentially passes through the first through hole, the second through hole and the third through hole, a plurality of coating sections are arranged on the base band at intervals, and an uncoated section is arranged between two adjacent coating sections; the punching mechanism is used for punching a blank sheet in the coating section and punching a coating sheet in the coating section, wherein the areas of the blank sheet and the coating sheet are preset areas; the thickness measuring mechanism is used for measuring a first thickness of the coating section and measuring a second thickness of the uncoated section; the transfer mechanism is used for transferring the blank sheet and the coating sheet on the punching mechanism to the weighing mechanism; The weighing mechanism is used for weighing a first weight of the coating sheet and a second weight of the blank sheet; According to the formula Calculating the target thickness of the coating section after rolling by the rolling mechanism, wherein d is the target thickness,The target compaction density, S is a preset area, d2 is a second thickness, G1 is a first weight, and G2 is a second weight; and adjusting the rolling pressure of the rolling mechanism on the base band in real time according to the target thickness, so as to adjust the first thickness of the coating section to be within a target range. Optionally, the punching mechanism comprises a punching seat, a punching driving assembly, a punching base provided with a punching convex part and a punching top block provided with a punching through hole, wherein the punching base is slidably arranged on the punching seat, and the punching driving assembly is arranged on the punching seat and is connected with the punching base; The punching driving assembly is used for driving the punching protruding part to enter and exit the punching through hole, so that a coated sheet is punched in the coated section, and a blank sheet is punched in the uncoated section. Optionally, the punching driving assembly comprises a punching rotary driving piece, a punching shaft, a rocker arm and a connecting rod which is slidably arranged on the punching seat, wherein the punching shaft is rotatably arranged on the punching seat, and the punching rotary driving piece is arranged on the punching seat and is connected with the punching shaft; One end of the rocker arm is eccentrically and rotatably arranged on the punching shaft, the other end of the rocker arm is rotatably connected with the connecting rod, and one end of the connecting rod, which is far away from the rocker a