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CN-224232648-U - Dry electrode film forming equipment

CN224232648UCN 224232648 UCN224232648 UCN 224232648UCN-224232648-U

Abstract

The application relates to the technical field of lithium battery production, in particular to dry electrode film forming equipment which comprises a machine base, wherein the machine base is provided with a plurality of bearing seats, and further comprises a feeding mechanism, a rolling mechanism, a thickness detection mechanism, a tension adjusting mechanism and a rolling mechanism which are arranged on the machine base, wherein the rolling mechanism comprises a rolling assembly and a gap adjusting assembly, the rolling assembly comprises a film forming roller, a multifunctional roller and a plurality of rolling rollers which are rotatably connected with the bearing seats, the gap adjusting assembly comprises a plurality of gap adjusting servo cylinders which are arranged between the multifunctional roller and the rolling rollers, and the thickness detection mechanism comprises a thickness sensor which is electrically connected with the gap adjusting servo cylinders. The gap adjusting assembly adjusts the gaps between the multifunctional roller and the calendaring roller in the rolling assembly through the gap adjusting servo oil cylinder, and the gap adjusting servo oil cylinder is used for replacing the gap adjusting oblique iron to ensure the processing precision and efficiency of the film forming equipment.

Inventors

  • LIN ZHANGYAN
  • LI WEIWEI

Assignees

  • 东莞市鹏锦机械科技有限公司

Dates

Publication Date
20260512
Application Date
20250527

Claims (8)

  1. 1. The dry electrode film forming equipment comprises a machine base (1), wherein the machine base (1) is provided with a plurality of bearing blocks (11), and is characterized by further comprising a feeding mechanism (2), a rolling mechanism (3), a thickness detection mechanism (4), a tension adjustment mechanism (5) and a winding mechanism (6) which are arranged on the machine base (1), the rolling mechanism (3) comprises a rolling assembly (31) and a gap adjustment assembly (32), the rolling assembly (31) comprises a film forming roller (311), a multifunctional roller (312) and a plurality of calendaring rollers (313) which are rotatably connected to the bearing blocks (11), the gap adjustment assembly (32) comprises a plurality of gap adjustment servo cylinders (321) which are arranged between the multifunctional roller (312) and the calendaring rollers (313), and the thickness detection mechanism (4) comprises a thickness sensor (41), and the thickness sensor (41) is electrically connected to the gap adjustment servo cylinders (321).
  2. 2. The dry electrode film forming apparatus according to claim 1, wherein the film forming roller (311), the multifunctional roller (312) and the calender roller (313) are disposed in this order along the longitudinal direction of the stand (1), and the gap adjusting servo cylinder (321) is disposed at both ends of the multifunctional roller (312) and the calender roller (313).
  3. 3. The dry electrode film forming apparatus according to claim 2, wherein the multifunctional roller (312) and the calender roller (313) are horizontally arranged, the gap adjusting servo cylinder (321) is divided into a first gap adjusting cylinder, a second gap adjusting cylinder and a third gap adjusting cylinder, the first gap adjusting cylinder is arranged between the film forming roller (311) and the multifunctional roller (312), the second gap adjusting cylinder is arranged between the multifunctional roller (312) and the calender roller (313), the third gap adjusting cylinder is arranged between a plurality of calender rollers (313), and the directions of the first gap adjusting cylinder, the second gap adjusting cylinder and the third gap adjusting cylinder are the same.
  4. 4. A dry electrode film forming apparatus according to claim 3, wherein a first gap adjusting cylinder is provided at a bearing housing (11) where the film forming roller (311) is located, a piston end of the first gap adjusting cylinder is connected to the bearing housing (11) where the multifunctional roller (312) is located, a second gap adjusting cylinder is provided at the bearing housing (11) where the multifunctional roller (312) is located, a piston end of the second gap adjusting cylinder is connected to the bearing housing (11) where one of the calender rollers (313) is located, a third gap adjusting cylinder is provided at the bearing housing (11) where the calender roller (313) is located, and a piston end of the third gap adjusting cylinder is connected to the bearing housing (11) where the adjacent calender roller (313) is located.
  5. 5. A dry electrode film forming apparatus according to any one of claims 1 to 4, wherein temperature control components are provided in each of the film forming roller (311), the multifunction roller (312) and the calender roller (313).
  6. 6. The dry electrode film forming apparatus according to claim 1, wherein the feeding mechanism (2) is disposed between the film forming roller (311) and the multifunctional roller (312), the feeding mechanism (2) comprises a feeding hopper (21) and a feeding runner (22) disposed in the feeding hopper (21), and the feeding runner (22) is rotatably connected with the feeding hopper (21).
  7. 7. A dry electrode film forming apparatus according to claim 1, wherein the tension adjusting mechanism (5) is located between the thickness detecting mechanism (4) and the winding mechanism (6), and the tension adjusting mechanism (5) includes a plurality of tension rollers (51) rotatably connected to the housing (1).
  8. 8. A dry electrode film forming apparatus according to claim 1, wherein the winding mechanism (6) comprises a winding roller (61) rotatably connected to the housing (1).

Description

Dry electrode film forming equipment Technical Field The application relates to the technical field of lithium battery production, in particular to dry electrode film forming equipment. Background The dry electrode film forming is a production process applied to lithium battery production, which is characterized in that active materials, conductive agents, binders and the like are uniformly mixed to form fibrillated powder materials, the binders are further fibrillated by friction force in the calendaring process to prepare an initial dry electrode film, and then the dry electrode film with the thickness required by the process is obtained by multi-roll calendaring. In the multi-roll calendaring process, the thickness precision of the membrane is mainly determined by the roll gap precision between two rolls, as shown in fig. 1, the gap adjusting oblique iron of the conventional film forming equipment is arranged between two roll bearing seats to adjust the gap between the two rolls, the gap adjusting oblique iron of the adjusting structure is driven by a screw rod, a speed reducer, a servo motor and other transmission parts, the oblique iron is easy to wear due to long-term stress in the film forming calendaring process, the precision is reduced, the consistency of the thickness of the membrane is difficult to ensure, and the surface density of the membrane is influenced seriously, meanwhile, the adjusting structure is required to measure the membrane after the membrane is rolled, and then adjust the position of the oblique iron after stopping and releasing according to the measurement result, so that the closed-loop control of the pressure, the roll gap and the thickness of the electrode membrane is time-consuming and difficult to realize. Disclosure of utility model The application aims to provide dry electrode film forming equipment, which aims to improve the processing precision and the processing efficiency of calendaring film forming equipment and solve the problems of easy wear of a chute and poor closed loop adjustment in the related technology. The embodiment of the application provides dry electrode film forming equipment, which comprises a machine base, wherein the machine base is provided with a plurality of bearing seats, and further comprises a feeding mechanism, a rolling mechanism, a thickness detection mechanism, a tension adjusting mechanism and a rolling mechanism which are arranged on the machine base, wherein the rolling mechanism comprises a rolling assembly and a gap adjusting assembly, the rolling assembly comprises a film forming roller, a multifunctional roller and a plurality of calendaring rollers which are rotatably connected with the bearing seats, the gap adjusting assembly comprises a plurality of gap adjusting servo cylinders which are arranged between the multifunctional roller and the calendaring rollers, and the thickness detection mechanism comprises a thickness sensor which is electrically connected with the gap adjusting servo cylinders. Further, the film forming roller, the multifunctional roller and the calendaring roller are sequentially arranged along the length direction of the machine base, and the gap adjusting servo oil cylinder is arranged at two ends of the multifunctional roller and the calendaring roller. The gap adjusting servo oil cylinder is divided into a first gap adjusting oil cylinder, a second gap adjusting oil cylinder and a third gap adjusting oil cylinder, wherein the first gap adjusting oil cylinder is arranged between the film forming roller and the multifunctional roller, the second gap adjusting oil cylinder is arranged between the multifunctional roller and the calendaring roller, the third gap adjusting oil cylinder is arranged among a plurality of calendaring rollers, and the directions of the first gap adjusting oil cylinder, the second gap adjusting oil cylinder and the third gap adjusting oil cylinder are the same. Further, the first gap adjusting oil cylinder is arranged on a bearing seat where the film forming roller is located, the piston end of the first gap adjusting oil cylinder is connected with the bearing seat where the multifunctional roller is located, the second gap adjusting oil cylinder is arranged on the bearing seat where the multifunctional roller is located, the piston end of the second gap adjusting oil cylinder is connected with the bearing seat where one rolling roller is located, the third gap adjusting oil cylinder is arranged on the bearing seat where the rolling roller is located, and the piston end of the third gap adjusting oil cylinder is connected with the bearing seat where the adjacent rolling roller is located. Further, the film forming roller, the multifunctional roller and the calendaring roller are provided with temperature control components. Further, the feeding mechanism is arranged between the film forming roller and the multifunctional roller and comprises a feeding hopper and a feeding rotating w