CN111570896B

CN111570896B - Lithium battery manufacturing equipment

Info

Publication number: CN111570896B
Application number: CN202010409150.3A
Authority: CN
Inventors: 艾延
Original assignee: China Energy Construction Beijing Energy Research Institute Co ltd
Current assignee: China Energy Construction Beijing Energy Research Institute Co ltd
Priority date: 2020-05-14
Filing date: 2020-05-14
Publication date: 2022-10-18
Anticipated expiration: 2040-05-14
Also published as: CN111570896A

Abstract

The invention belongs to the field of lithium battery manufacturing, and particularly relates to lithium battery manufacturing equipment which comprises a bottom plate, supports, a rotating shaft, a slitting wheel, shaft sleeves A, shaft sleeves B, an electric driving module, an adjusting module A and an adjusting module B, wherein two opposite supports are arranged on a base; after the two interacting slitting wheels are abraded to a certain degree, the adjusting module A and the adjusting module B can be adjusted in a combined mode according to the hardness of the material of the slit pole pieces to enable the two interacting slitting wheels which are arranged on the two rotating shafts to be attached to each other in a driving mode again and have side pressure with proper size, and the side pressure which can cut the pole pieces is enough between the two interacting slitting wheels.

Description

Lithium battery manufacturing equipment

Technical Field

The invention belongs to the field of lithium battery manufacturing, and particularly relates to lithium battery manufacturing equipment.

Background

The pole piece manufacturing is a basic process for manufacturing the lithium battery, and the pole piece slitting equipment is equipment for slitting rolled battery pole pieces according to the specifications of the battery. The pole piece cutting equipment cuts coiled aluminum foil or copper foil with the thickness of 0.01 to 0.1 millimeter by two circular disc cutters which are distributed up and down by utilizing a rolling shear principle to carry out slitting shearing.

In pole piece cutting, the lateral pressure between two circular disc cutters influences the key factor of cutting quality, and lateral pressure is too little, and pole piece cutting probably appears cutting the section and is uneven, fall defects such as material, and lateral pressure is too big, and disc cutter is more easy wearing and tearing, and the life-span is shorter.

Traditional pole piece cutting equipment provides controllable lateral pressure for two disc cutters of interact through the cylinder, and although pressure is controllable, still there is great wearing and tearing between the disc cutter, and wearing and tearing still are more serious.

Aiming at the problem of serious abrasion of the circular disc cutters in the traditional pole piece cutting equipment, the pole piece cutting equipment which can effectively reduce the abrasion of the circular disc cutters and can adjust the lateral pressure between the circular disc cutters according to the hardness of the cut sheet materials is needed to be designed.

The invention designs a lithium battery manufacturing device to solve the problems.

Disclosure of Invention

In order to solve the defects in the prior art, the invention discloses a lithium battery manufacturing device which is realized by adopting the following technical scheme.

In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention conventionally use, which are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, or be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

A lithium battery manufacturing equipment is characterized in that: the electric cutting machine comprises a bottom plate, supports, a rotating shaft, a cutting wheel, shaft sleeves A, shaft sleeves B, an electric driving module, an adjusting module A and an adjusting module B, wherein two opposite supports are installed on a base; the rotating shafts are axially matched in the shaft sleeve A and the shaft sleeve B in a sliding manner at the same height; a plurality of slitting wheels are axially and fixedly arranged on each rotating shaft at intervals; the slitting wheels on the two rotating shafts are in one-to-one correspondence along the vertical direction, and the two slitting wheels which are in up-and-down correspondence are staggered and the axial parts are overlapped.

The lower rotating shaft driven by the electric driving module to rotate is in constant-speed transmission connection with the upper rotating shaft, and the rotating directions of the two rotating shafts are opposite; an adjusting module A for adjusting the axial pressure of the upper slitting wheel to the corresponding lower slitting wheel is arranged on the upper rotating shaft, and an adjusting module B for adjusting the axial pressure of the lower slitting wheel to the corresponding upper slitting wheel is arranged on the lower rotating shaft; the operation of the adjusting module A is linked with the operation of the adjusting module B.

As a further improvement of the technology, the adjusting module a comprises a ring sleeve C, a ring sleeve D, a cylinder a, a pressure spring, a shaft sleeve C, a gear D, a shaft sleeve D, a cylinder B, and a gear E, wherein the ring sleeve C which is nested on the upper rotating shaft and is axially matched with the upper rotating shaft in a sliding manner is fixedly connected with one end of the corresponding shaft sleeve a; the ring sleeve D is fixedly arranged on the upper rotating shaft; the ring sleeve D is in rotating fit with the cylinder A nested on the ring sleeve D, and the ring sleeve D and the cylinder A can slide relatively in the axial direction to a certain extent; the internal thread on the inner wall of the cylinder A is screwed with the external thread on the outer cylindrical surface of the ring sleeve C; the ring sleeve C is connected with the ring sleeve D through a pressure spring which is nested on the corresponding rotating shaft and is in a compressed state.

One end of a shaft sleeve C nested on the shaft sleeve A is fixedly connected with the ring sleeve C, the other end of the shaft sleeve A is provided with a flange, and three gears C are uniformly arranged on the flange in the circumferential direction; the three gears C are meshed with a gear D which is nested and rotated on the shaft sleeve A, and simultaneously, the three gears C are meshed with the insections on the inner wall of the cylinder A; the cylinder B nested and rotated outside the cylinder A is fixedly connected with the gear D through a shaft sleeve D nested on the shaft sleeve A; the inner wall of the cylinder A is provided with a structure for limiting the relative axial sliding amplitude of the ring sleeve D and the cylinder A; the gear E is arranged on the outer side of the cylinder A.

As a further improvement of the technology, the adjusting module B comprises a ring sleeve C, a ring sleeve D, a cylinder a, a pressure spring and a gear E, wherein the ring sleeve C which is nested on the lower rotating shaft and axially and slidably matched with the lower rotating shaft is fixedly connected with one end of the corresponding shaft sleeve a; the ring sleeve D is fixedly arranged on the lower rotating shaft, the outer side of the ring sleeve D is rotatably matched with the cylinder A, and the internal thread on the inner wall of the cylinder A is screwed with the external thread on the outer cylindrical surface of the ring sleeve C; the ring sleeve C is connected with the ring sleeve D through a pressure spring which is nested on the corresponding rotating shaft and is in a stretching state; the cylinder A is externally provided with a gear E which is meshed with the gear E in the adjusting module A.

As a further improvement of the technology, the inner wall of the cylinder a in the adjusting module a is provided with a ring groove B, and a ring sleeve D in the adjusting module a rotates and axially slides in the ring groove B; the inner wall of the cylinder A in the adjusting module B is provided with a ring groove B, and the ring sleeve D in the adjusting module B rotates and axially slides in the corresponding ring groove B. The ring groove B provides a containing space for the ring sleeve D.

As a further improvement of the technology, the shaft sleeve A rotates in a shaft groove on a corresponding support, a ring sleeve A is fixedly arranged on the shaft sleeve A, and the ring sleeve A rotates in a ring groove A on the inner wall of the corresponding shaft groove; two key grooves on the inner wall of the shaft sleeve A are respectively in sliding fit with two guide keys arranged at one end of a corresponding rotating shaft; the shaft sleeve B rotates in a shaft groove on the corresponding support, a ring sleeve B is fixedly arranged on the shaft sleeve B, and the ring sleeve B rotates in a ring groove A on the inner wall of the corresponding shaft groove; two key grooves on the inner wall of the shaft sleeve B are respectively in sliding fit with two guide keys arranged at one end of the corresponding rotating shaft. The ring groove A provides a containing space for the ring sleeve A, and the cooperation of the ring sleeve A and the ring groove A ensures that the shaft sleeve A only rotates relative to the support and cannot axially slide relative to the support.

As the further improvement of this technique, all install gear A in above-mentioned two pivots, two gear A intermeshing guarantee that the rotation rate of two pivots equals, and then guarantee that two cut the wheel pair and effectively cut through pole piece between them, avoid the pole piece because of being cut the wheel by two that rotation rate is different and cut and lead to cutting the wheel pair pole piece and produce wearing and tearing. The gear a mounted on the lower shaft meshes with the gear B mounted on the output shaft of the electric drive module.

Compared with the traditional lithium battery pole piece slitting equipment, after the two interacting slitting wheels are abraded to a certain degree, the two interacting slitting wheels can be driven to be attached to the two interacting slitting wheels arranged on the rotating shafts again and have side pressure with proper size by adjusting the adjusting module A and the adjusting module B in a joint mode according to the hardness of the material of the slit pole piece, and the side pressure enough for slitting the pole piece is ensured to be arranged between the two interacting slitting wheels. Meanwhile, the side pressure between the upper and lower matched slitting wheels is finely adjusted according to the hardness of the material of the slit pole piece, so that the abrasion of the two interacting slitting wheels caused by the side pressure is reduced to a reasonable range, the service life of the slitting wheels is prolonged, and the maintenance cost of equipment is reduced. The invention has simple structure and better use effect.

Drawings

Fig. 1 is a schematic cross-sectional view of the present invention.

Fig. 2 is a schematic cross-sectional view of the adjustment module a and the adjustment module B.

Fig. 3 is a schematic cross-sectional view of the rotating shaft, the sleeve B, the support and the gear a.

Fig. 4 is a schematic cross-sectional view of the rotating shaft, the shaft sleeve A and the support.

Fig. 5 is a schematic cross-sectional view of a holder and its holder.

Fig. 6 is a schematic cross-sectional view of the adjustment module a in cooperation with the bushing a.

Fig. 7 is a schematic cross-sectional view of an adjustment module B in cooperation with a bushing a.

Fig. 8 is a schematic cross-sectional view of the ring sleeve C, the sleeve a, the gear D and the gear C.

Fig. 9 is a schematic cross-sectional view of a cylinder a.

Fig. 10 is a schematic cross-sectional view of the gear a, sleeve B and collar B engaged.

Number designation in the figures: 1. a base plate; 2. a support; 3. a shaft groove; 4. a ring groove A; 5. a rotating shaft; 6. a slitting wheel; 7. a shaft sleeve A; 8. a key slot; 9. a ring sleeve A; 10. a guide key; 11. a shaft sleeve B; 13. a ring sleeve B; 15. a gear A; 16. a gear B; 17. an electric drive module; 18. c, sleeving a ring sleeve; 19. a ring sleeve D; 20. a cylinder A; 21. a ring groove B; 23. an internal thread; 24. insection; 25. a gear E; 26. a pressure applying spring; 27. a shaft sleeve C; 28. a gear C; 29. a gear D; 30. a shaft sleeve D; 31. a cylinder B; 32. an adjustment module A; 33. and adjusting the module B.

Detailed Description

The drawings are schematic illustrations of the implementation of the present invention to facilitate understanding of the principles of structural operation. The specific product structure and the proportional size are determined according to the use environment and the conventional technology.

As shown in fig. 1 and 2, the cutting device comprises a bottom plate 1, supports 2, a rotating shaft 5, a cutting wheel 6, a shaft sleeve A7, a shaft sleeve B11, an electric driving module 17, an adjusting module a32 and an adjusting module B33, wherein as shown in fig. 1, 2 and 3, two opposite supports 2 are mounted on a base, two vertically distributed shaft sleeves A7 are rotatably matched on one support 2, and two vertically distributed shaft sleeves B11 are rotatably matched on the other support 2; the rotating shaft 5 is axially matched in a sliding way in the shaft sleeve A7 and the shaft sleeve B11 which are positioned at the same height; a plurality of slitting wheels 6 are axially and fixedly arranged on each rotating shaft 5 at intervals; the slitting wheels 6 on the two rotating shafts 5 correspond to each other one by one along the vertical direction, and the two slitting wheels 6 which correspond up and down are staggered and the axial parts are overlapped.

As shown in fig. 1 and 3, the lower rotating shaft 5 driven by the electric drive module 17 to rotate is in constant-speed transmission connection with the upper rotating shaft 5, and the rotating directions of the two rotating shafts 5 are opposite; as shown in fig. 1 and 2, an adjusting module a32 for adjusting the axial pressure of the upper slitting wheel 6 to the corresponding lower slitting wheel 6 is mounted on the upper rotating shaft 5, and an adjusting module B33 for adjusting the axial pressure of the lower slitting wheel 6 to the corresponding upper slitting wheel 6 is mounted on the lower rotating shaft 5; the operation of the regulating module a32 is linked to the operation of the regulating module B33.

As shown in fig. 6, the adjusting module a32 includes a ring C18, a ring D19, a cylinder a20, a pressure spring 26, a sleeve C27, a gear C28, a gear D29, a sleeve D30, a cylinder B31, and a gear E25, wherein as shown in fig. 2, 6, and 8, the ring C18 nested on the upper rotating shaft 5 and axially slidably engaged with the upper rotating shaft 5 is fixedly connected to one end of the corresponding sleeve A7; the ring sleeve D19 is fixedly arranged on the upper rotating shaft 5; the ring sleeve D19 is in rotating fit with the cylinder A20 nested on the ring sleeve D, and the ring sleeve D and the cylinder A can slide relatively in the axial direction to a certain extent; the internal thread 23 on the inner wall of the cylinder A20 is screwed with the external thread on the outer cylindrical surface of the ring sleeve C18; the ring C18 and the ring D19 are connected by a pressure spring 26 which is nested on the corresponding rotating shaft 5 and is in a compressed state.

As shown in fig. 6 and 8, one end of a shaft sleeve C27 nested on the shaft sleeve A7 is fixedly connected with the ring sleeve C18, the other end of the shaft sleeve A7 is provided with a flange, and three gears C28 are uniformly arranged on the flange in the circumferential direction; the three gears C28 are meshed with a gear D29 nested and rotated on the shaft sleeve A7, and meanwhile, the three gears C28 are meshed with the insections 24 on the inner wall of the cylinder A20; the cylinder B31 nested and rotating outside the cylinder A20 is fixedly connected with the gear D29 through a shaft sleeve D30 nested on the shaft sleeve A7; the inner wall of the cylinder A20 is provided with a structure for limiting the relative axial sliding amplitude of the ring sleeve D19 and the cylinder A20; a gear E25 is mounted on the outside of the cylinder a 20.

As shown in fig. 7, the adjusting module B33 includes a ring sleeve C18, a ring sleeve D19, a cylinder a20, a pressure spring 26, and a gear E25, wherein as shown in fig. 2 and 7, the ring sleeve C18 nested on the lower rotating shaft 5 and axially sliding-fitted with the lower rotating shaft 5 is fixedly connected to one end of the corresponding shaft sleeve A7; a ring sleeve D19 is fixedly arranged on the lower rotating shaft 5, a cylinder A20 is rotatably matched on the outer side of the ring sleeve D19, and an internal thread 23 on the inner wall of the cylinder A20 is screwed with an external thread on the outer cylindrical surface of the ring sleeve C18; the ring sleeve C18 is connected with the ring sleeve D19 through a pressure spring 26 which is nested on the corresponding rotating shaft 5 and is in a stretching state; on the outside of the cylinder a20, a gear E25 is mounted, this gear E25 meshing with a gear E25 in the adjustment module a 32.

As shown in fig. 6, 7 and 9, the inner wall of the cylinder a20 in the adjusting module a32 is provided with a ring groove B21, and the ring sleeve D19 in the adjusting module a32 rotates and axially slides in the ring groove B21; the inner wall of the cylinder A20 in the adjusting module B33 is provided with a ring groove B21, and the ring sleeve D19 in the adjusting module B33 rotates and axially slides in the corresponding ring groove B21. The ring groove B21 provides a receiving space for the ring sleeve D19.

As shown in fig. 2, 4 and 5, the shaft sleeve A7 rotates in the shaft groove 3 on the corresponding support 2, a ring sleeve A9 is fixedly mounted on the shaft sleeve A7, and the ring sleeve A9 rotates in the ring groove A4 on the inner wall of the corresponding shaft groove 3; as shown in fig. 4, 6 and 7, two key slots 8 on the inner wall of the shaft sleeve A7 are respectively in sliding fit with two guide keys 10 arranged at one end of the corresponding rotating shaft 5; as shown in fig. 3, 5 and 8, the shaft sleeve B11 rotates in the shaft groove 3 on the corresponding support 2, the ring sleeve B13 is fixedly mounted on the shaft sleeve B11, and the ring sleeve B13 rotates in the ring groove A4 on the inner wall of the corresponding shaft groove 3; the two key slots 8 on the inner wall of the shaft sleeve B11 are respectively in sliding fit with two guide keys 10 arranged at one end of the corresponding rotating shaft 5. The ring groove A4 provides a receiving space for the ring sleeve A9, and the cooperation between the ring sleeve A9 and the ring groove A4 ensures that the shaft sleeve A7 only rotates relative to the support 2 and does not slide axially relative to the support 2.

As shown in fig. 1 and 3, the two rotating shafts 5 are all provided with the gears a15, the two gears a15 are meshed with each other, the rotating speeds of the two rotating shafts 5 are guaranteed to be equal, and then the two slitting wheels 6 are guaranteed to effectively slit pole pieces passing through the two rotating shafts, so that the pole pieces are prevented from being abraded by the slitting wheels 6 due to the fact that the pole pieces are slit by the two slitting wheels 6 with different rotating speeds. A gear wheel a15 mounted on the lower rotor shaft 5 meshes with a gear wheel B16 mounted on the output shaft of an electric drive module 17.

The electric drive module 17 of the present invention is of the prior art and is mainly composed of a speed reducer, a motor and a control unit.

According to the invention, the matching relationship between the gear D29 in the adjusting module A32 and the three gears C28 and the matching relationship between the corresponding ring sleeve C18 and the corresponding cylinder A20 ensure that when the cylinder B31 rotates for a certain extent, the cylinder B31 drives the adjusting module A32 and the two cylinders A20 in the adjusting module B33 to rotate at a speed lower than the rotation speed of the cylinder B31 through the transmission of the gear D29 and the three gears C28, the cylinder A20 rotating at a lower rotation speed generates a small axial displacement relative to the corresponding rotating shaft 5 under the driving of the ring sleeve C18 in threaded fit with the cylinder A20, so that the limitation of the cylinder A20 on the ring sleeve D19 in the axial direction is relieved, the ring sleeve D19 drives the slitting wheel 6 on the corresponding rotating shaft 5 to perform lateral pressure on the slitting wheel 6 corresponding to the other rotating shaft 5 through the corresponding rotating shaft 5 under the action of the corresponding pressure spring 26, a certain lateral pressure is ensured to be provided between the upper and lower slitting wheels 6 which are matched with each other, and the pole piece is effectively slit, and the quality of the slit pole piece strip is improved.

After the adjustment module A32 and the adjustment module B33 are finely adjusted, the friction force between the upper and lower matched slitting wheels 6, which is caused by the existence of the lateral pressure, is ensured to be minimum while the lateral pressure of the pole piece is reasonably and effectively sheared between the upper and lower matched slitting wheels 6, so that the abrasion degree between the upper and lower matched slitting wheels 6 is ensured to be minimum, and the service life of the slitting wheels 6 is further prolonged.

The elastic coefficients of the pressure-applying springs 26 in the adjustment module a32 and the adjustment module B33 are large enough to provide sufficient side pressure to the upper and lower slitting wheels 6 engaged with each other and to compensate for the side pressure reduced by wear between the upper and lower slitting wheels 6 engaged with each other.

The working process of the invention is as follows: in the initial state, the upper slitting wheel 6 and the lower slitting wheel 6 are in lateral contact without lateral pressure of mutual extrusion, the ring sleeve D19 in the adjusting module A32 is tightly attached to the side wall, close to the corresponding slitting wheel 6, in the corresponding ring groove B21 under the action of the pressure spring 26 in the compression energy storage state, and the ring sleeve D19 in the adjusting module B33 is tightly attached to the side wall, far away from the corresponding slitting wheel 6, in the corresponding ring groove B21 under the action of the pressure spring 26 in the tension energy storage state.

When the invention is used for cutting pole pieces, the lateral pressure between two mutually corresponding slitting wheels 6 on different rotating shafts 5 is required to be adjusted according to the hardness of the pole piece material to be cut, and the adjustment flow of the lateral pressure between the two slitting wheels 6 corresponding to the upper part and the lower part is as follows:

the cylinder B31 in the adjusting module a32 is rotated so that the cylinder B31 is rotated by a certain extent with respect to the corresponding rotating shaft 5. The cylinder B31 drives the gear D29 to synchronously rotate through the shaft sleeve D30, the gear D29 drives the cylinder A20 to rotate by a small amplitude through the three gears C28 meshed with the gear D, and the rotation direction of the cylinder A20 is opposite to that of the cylinder B31. Since the ring sleeves C18 and the sleeve A7 are only in sliding axial engagement with the respective shafts 5, the cylinders a20 rotating relative to the respective shafts 5 are driven by the ring sleeves C18 screwed thereto to slide axially relative to the respective shafts 5 in the direction of the slitting wheels 6 in the adjusting module a 32. The ring sleeve D19 fixedly arranged on the corresponding rotating shaft 5 in the adjusting module A32 generates a relative sliding trend in the corresponding ring groove B21, the acting force between the ring sleeve D19 and the side wall of the corresponding ring groove B21 is gradually reduced, and the reduction of the acting force between the ring sleeve D19 and the side wall of the corresponding ring groove B21 is sequentially applied to the lower slitting wheel 6 through the ring sleeve D19, the rotating shaft 5 and the corresponding slitting wheel 6. The compression spring 26 in the adjustment block a32 reduces the pressure against the corresponding collar D19 by an amount equal to the reduction in the force between the collar D19 and the side wall of the corresponding ring groove B21.

Therefore, in the process, the size of the axial relative movement trend between the ring sleeve D19 and the corresponding cylinder a20 in the adjusting module a32 needs to be adjusted according to the hardness of the material of the cut pole piece, so as to control the lateral pressure between the slitting wheel 6 on the rotating shaft 5 where the adjusting module a32 is located and the corresponding slitting wheel 6 below.

Meanwhile, the cylinder a20 in the adjusting module a32 rotates the cylinder a20 in the adjusting module B33 at a constant speed through the two gears E25 engaged with each other, and the rotating direction of the cylinder a20 in the adjusting module a32 is opposite to the rotating direction of the cylinder a20 in the adjusting module B33. The cylinders a20 in the regulating modules B33 have a tendency to move axially relative to the respective axis of rotation 5 in a direction away from the respective slitting wheels 6 under the action of the respective annular sleeves C18. The acting force between the side walls of the ring sleeve D19 and the corresponding ring groove B21 in the adjusting module B33 is gradually reduced, the reducing amount of the acting force between the side walls of the ring sleeve D19 and the corresponding ring groove B21 is sequentially applied to the upper slitting wheel 6 through the ring sleeve D19 and the rotating shaft 5 and the corresponding slitting wheel 6, so that the two slitting wheels 6 which are mutually matched up and down are changed into a mutual side pressing state from the mutual contact of an initial state, the pole pieces passing between the two slitting wheels 6 which are mutually matched up and down are effectively sheared, the phenomenon that burrs and unevenness occur on the shearing edge of the slit pole piece strip is prevented, and the pole piece slitting quality is improved.

When the present invention is repeatedly used for a long time, the upper and lower slitting wheels 6 which are matched with each other are abraded to a small extent, so that the lateral pressure between the upper and lower slitting wheels 6 which are matched with each other is reduced because of no compensation. When the pole pieces with the same material hardness are continuously cut, the edge edges of the cut pole pieces are likely to be burred or uneven due to insufficient lateral pressure between the upper and lower cutting wheels 6 which are matched with each other, so that the quality of the pole piece cutting is affected.

Therefore, after the present invention is used repeatedly for a long time, in order to compensate for the decrease of the side pressure between the upper and lower slitting wheels 6 which are matched with each other due to abrasion, the fine adjustment of the adjustment module a32 and the adjustment module B33 is needed to compensate for the partial side pressure lost due to abrasion between the upper and lower slitting wheels 6 which are matched with each other, so that the side pressure between the upper and lower slitting wheels 6 which are matched with each other reaches a value which is matched with the hardness of the pole piece material to be slit, and the effective slitting of the pole piece is continuously completed.

The readjustment process of the regulating module a32 and the regulating module B33 is as described above, and after this adjustment, the pressure springs 26 in the regulating module a32 and the regulating module B33 compensate the lateral pressure between the upper and lower two slitting wheels 6 which are engaged with each other due to the released energy, so that the forces of the pressure springs 26 in the regulating module a32 and the regulating module B33 on the corresponding ring sleeve D19 are reduced as a whole. And after compensating the reduced side pressure between the upper and lower two slitting wheels 6 which are matched with each other due to further wear, the whole acting force of the pressure spring 26 in the regulating module a32 and the regulating module B33 on the corresponding ring sleeve D19 is reduced again.

After the side pressure adjustment of the slitting wheel 6 between the two rotating shafts 5 is finished, the electric driving module 17 is started to operate, the electric driving module 17 drives the two rotating shafts 5 to rotate at a constant speed through the gear B16 and the two gears A15, and the rotating directions of the two rotating shafts 5 are opposite. The two rotating shafts 5 simultaneously drive a plurality of slitting wheels 6 on the rotating shafts to rotate. The upper and lower slitting wheels 6 which are positioned on the two rotating shafts 5 and are matched with each other carry out effective rolling-shear type slitting on the pole pieces entering between the upper and lower slitting wheels. Meanwhile, each rotating shaft 5 drives the adjusting module a32 or the adjusting module B33 to synchronously rotate along with the corresponding rotating shaft 5 through the corresponding shaft sleeve A7 and the corresponding shaft sleeve B11 which are in axial sliding fit with the rotating shaft 5.

And after the pole piece is cut by the electric cutting machine, stopping the electric driving module 17.

In conclusion, the beneficial effects of the invention are as follows: after the two interacting slitting wheels 6 are abraded to a certain extent, the slitting wheels 6 which are driven to be installed on the two rotating shafts 5 to interact are tightly attached again and have side pressure with proper size by adjusting the adjusting module A32 and the adjusting module B33 in a joint mode according to the hardness of the material of the slit pole piece, and the side pressure which can be enough for slitting the pole piece is ensured to be arranged between the two interacting slitting wheels 6. Meanwhile, the side pressure between the upper and lower matched slitting wheels 6 is finely adjusted according to the material hardness of the slit pole pieces, so that the abrasion of the two interacting slitting wheels 6 caused by the existence of the side pressure can be reduced to a reasonable range, the service life of the slitting wheels 6 is prolonged, and the maintenance cost of the equipment is reduced.

Claims

1. A lithium battery manufacturing equipment is characterized in that: the electric cutting machine comprises a bottom plate, supports, a rotating shaft, a cutting wheel, shaft sleeves A, shaft sleeves B, an electric driving module, an adjusting module A and an adjusting module B, wherein two opposite supports are installed on a base; the rotating shafts are axially matched in the shaft sleeve A and the shaft sleeve B in a sliding manner at the same height; a plurality of slitting wheels are axially and fixedly arranged on each rotating shaft at intervals; the slitting wheels on the two rotating shafts are in one-to-one correspondence along the vertical direction, and the two slitting wheels which are in up-and-down correspondence are staggered and the axial parts are overlapped;

the lower rotating shaft driven by the electric driving module to rotate is in constant-speed transmission connection with the upper rotating shaft, and the rotating directions of the two rotating shafts are opposite; an adjusting module A for adjusting the axial pressure of the upper slitting wheel to the corresponding lower slitting wheel is arranged on the upper rotating shaft, and an adjusting module B for adjusting the axial pressure of the lower slitting wheel to the corresponding upper slitting wheel is arranged on the lower rotating shaft; the operation of the adjusting module A is linked with the operation of the adjusting module B;

the adjusting module A comprises a ring sleeve C, a ring sleeve D, a cylinder A, a pressure spring, a shaft sleeve C, a gear D, a shaft sleeve D, a cylinder B and a gear E, wherein the ring sleeve C which is nested on the upper rotating shaft and is axially matched with the upper rotating shaft in a sliding manner is fixedly connected with one end of the corresponding shaft sleeve A; the ring sleeve D is fixedly arranged on the upper rotating shaft; the ring sleeve D is in rotating fit with the cylinder A nested on the ring sleeve D, and the ring sleeve D and the cylinder A can slide relatively in the axial direction to a certain extent; the internal thread on the inner wall of the cylinder A is screwed with the external thread on the outer cylindrical surface of the ring sleeve C; the ring sleeve C is connected with the ring sleeve D through a pressure spring which is nested on the corresponding rotating shaft and is in a compressed state;

one end of a shaft sleeve C nested on the shaft sleeve A is fixedly connected with the ring sleeve C, the other end of the shaft sleeve A is provided with a flange, and three gears C are uniformly arranged on the flange in the circumferential direction; the three gears C are meshed with a gear D which is nested and rotated on the shaft sleeve A, and simultaneously, the three gears C are meshed with the insections on the inner wall of the cylinder A; the cylinder B nested and rotated outside the cylinder A is fixedly connected with the gear D through a shaft sleeve D nested on the shaft sleeve A; the inner wall of the cylinder A is provided with a structure for limiting the relative axial sliding amplitude of the ring sleeve D and the cylinder A; a gear E is arranged on the outer side of the cylinder A;

the adjusting module B comprises a ring sleeve C, a ring sleeve D, a cylinder A, a pressure applying spring and a gear E, wherein the ring sleeve C which is nested on the lower rotating shaft and is axially matched with the lower rotating shaft in a sliding manner is fixedly connected with one end of the corresponding shaft sleeve A; the ring sleeve D is fixedly arranged on the lower rotating shaft, the outer side of the ring sleeve D is rotatably matched with the cylinder A, and the internal thread on the inner wall of the cylinder A is screwed with the external thread on the outer cylindrical surface of the ring sleeve C; the ring sleeve C is connected with the ring sleeve D through a pressure spring which is nested on the corresponding rotating shaft and is in a stretching state; the cylinder A is externally provided with a gear E which is meshed with the gear E in the adjusting module A.

2. The lithium battery manufacturing apparatus as recited in claim 1, wherein: the inner wall of the cylinder A in the adjusting module A is provided with a ring groove B, and a ring sleeve D in the adjusting module A rotates and axially slides in the ring groove B; the inner wall of the cylinder A in the adjusting module B is provided with a ring groove B, and a ring sleeve D in the adjusting module B rotates and axially slides in the corresponding ring groove B.

3. The lithium battery manufacturing apparatus according to claim 1, wherein: the shaft sleeve A rotates in a shaft groove on a corresponding support, a ring sleeve A is fixedly arranged on the shaft sleeve A, and the ring sleeve A rotates in a ring groove A on the inner wall of the corresponding shaft groove; two key grooves on the inner wall of the shaft sleeve A are respectively in sliding fit with two guide keys arranged at one end of a corresponding rotating shaft; the shaft sleeve B rotates in a shaft groove on a corresponding support, a ring sleeve B is fixedly arranged on the shaft sleeve B, and the ring sleeve B rotates in a ring groove A on the inner wall of the corresponding shaft groove; two key grooves on the inner wall of the shaft sleeve B are respectively in sliding fit with two guide keys arranged at one end of the corresponding rotating shaft.

4. The lithium battery manufacturing apparatus according to claim 1, wherein: the two rotating shafts are respectively provided with a gear A, and the two gears A are mutually meshed; the gear a mounted on the lower shaft meshes with the gear B mounted on the output shaft of the electric drive module.