CN220784053U - Pole piece cutting device and pole piece production equipment - Google Patents

Abstract

The utility model relates to the technical field of pole piece production, in particular to a pole piece cutting device and pole piece production equipment. The pole piece cutting device comprises a supporting mechanism, a first cutting mechanism, a second cutting mechanism and a driving mechanism, wherein the first cutting mechanism and the second cutting mechanism are oppositely arranged, the second cutting mechanism is provided with a concave part for the first cutting mechanism to extend into, and the driving mechanism is arranged on the supporting mechanism and can drive the first cutting mechanism and/or the second cutting mechanism to rotate so that the first cutting mechanism is matched with the edge of the concave part to cut the pole piece. Through above-mentioned setting for the edge of depressed part and pivoted first cutting mechanism mutually support and cut the pole piece, reduce the resistance that the pole piece receives, avoid the pole piece to pile up, and then improve the cutting effect of pole piece. The pole piece production equipment ensures the better quality of the pole piece by applying the pole piece cutting device.

Description

Pole piece cutting device and pole piece production equipment

Technical Field

The utility model relates to the technical field of pole piece production, in particular to a pole piece cutting device and pole piece production equipment.

Background

The pole piece is a part of the battery and is divided into a positive pole piece and a negative pole piece. The pole pieces mainly comprise active substances, and the active substances of the positive pole piece and the negative pole piece are different in material selection. During production, a dry method is generally adopted to prepare the pole piece, active material particles are mainly prepared into slurry, then the slurry is prepared and molded through a pole piece molding device, the edge of a molded active material layer is cut through a cutting device, and finally the pole piece is wound on a winding roller.

The existing pole piece cutting device is usually a cutter head, and the cutter head faces the pole piece and contacts the pole piece. The pole piece produced by the pole piece forming device is wound on the winding roller through the cutter head, and the pole piece is cut by the blade close to one side of the forming equipment when passing through the blade. Considering that the pole piece prepared by adopting a dry method is poor in mechanical property, the pole piece is easily pulled to break when being wound, a driving device is usually arranged on a pole piece forming device so as to send out the formed pole piece, and the pole piece is prevented from being broken due to the fact that the pole piece is subjected to larger traction force of winding equipment.

However, the pole piece can be scratched by the blade that the tool bit is close to one side of the former through the tool bit, so that the pole piece receives great resistance, and the driving device on the pole piece forming device continuously sends the pole piece to one side of the tool bit, so that the pole piece is very easy to be stacked on the cutting side of the tool bit close to the former, and the cutting effect on the pole piece is further affected.

Therefore, there is a need for a pole piece cutting device and a pole piece production apparatus to solve the above problems.

Disclosure of Invention

The utility model aims to provide a pole piece cutting device and pole piece production equipment, which can reduce the resistance born by a pole piece when the pole piece is cut, avoid the accumulation of the pole piece and further improve the cutting effect of the pole piece.

In order to achieve the above object, the following technical scheme is provided:

pole piece cutting device includes:

a first cutting mechanism; and

the pole piece cutting device comprises a first cutting mechanism, a second cutting mechanism and a driving mechanism, wherein the driving mechanism is configured to drive the first cutting mechanism and/or the second cutting mechanism to rotate, the first cutting mechanism and the second cutting mechanism are arranged oppositely, a pole piece is arranged between the first cutting mechanism and the second cutting mechanism, the second cutting mechanism is provided with a concave part, and the first cutting mechanism can extend into the concave part so as to cut the pole piece along the length direction of the pole piece.

Preferably, the driving mechanism includes:

the first cutting mechanism comprises a circular cutter, the first driving piece is configured to drive the circular cutter to rotate, and the circular cutter is used for cutting the pole piece.

Preferably, the driving mechanism further includes:

a second driving member configured to drive the annular cutter to reciprocate in a vertical direction;

and a third driving member configured to drive the annular cutter to reciprocate in a width direction of the pole piece.

Preferably, the second cutting mechanism includes a carrying roller, and the driving mechanism further includes a fourth driving member configured to drive the carrying roller to rotate.

As the preferable scheme, the bearing rollers are arranged in two, the axes of the two bearing rollers are collinear, the concave parts are arranged on the bearing rollers, the number of the first cutting mechanisms is two, and the first cutting mechanisms are correspondingly arranged with the concave parts on the bearing rollers.

As a preferable scheme, the bearing roller is a long roller, the concave parts are arranged at two ends of the bearing roller, the number of the first cutting mechanisms is two, and the first cutting mechanisms are correspondingly arranged with the concave parts on the bearing roller.

Preferably, the carrying roller comprises:

a rotating shaft;

the plurality of groove rings are sleeved on the periphery of the rotating shaft, and two adjacent groove rings jointly form the concave part.

Preferably, one end face of the groove ring body of the groove ring extends out of a convex edge along the axial direction of the bearing roller, and the outer diameter of the convex edge is smaller than that of the groove ring body.

Preferably, the carrying roller further comprises:

and the limiting rings are arranged at two ends of the rotating shaft and are positioned at the outer sides of the groove rings.

The pole piece production equipment comprises a pole piece forming device and a winding device, and further comprises the pole piece cutting device, wherein the pole piece cutting device is arranged at the downstream of the pole piece forming device and is configured to cut the pole piece formed by extrusion of the pole piece forming device, and the winding device is arranged at the downstream of the pole piece cutting device and is configured to wind the cut pole piece.

Compared with the prior art, the utility model has the beneficial effects that:

the pole piece cutting device comprises a supporting mechanism, a first cutting mechanism, a second cutting mechanism and a driving mechanism, wherein the first cutting mechanism and the second cutting mechanism are oppositely arranged, the second cutting mechanism is provided with a concave part for the first cutting mechanism to extend into, and the driving mechanism is arranged on the supporting mechanism and can drive the first cutting mechanism and/or the second cutting mechanism to rotate so that the first cutting mechanism and the edge of the concave part are matched to cut a pole piece. Through above-mentioned setting for the edge of depressed part and pivoted first cutting mechanism mutually support and cut the pole piece, reduce the resistance that the pole piece receives, avoid the pole piece to pile up, and then improve the cutting effect of pole piece.

According to the pole piece production equipment provided by the utility model, by applying the pole piece cutting device, the resistance of the pole piece during cutting can be reduced, the pole piece is prevented from being piled up, the cutting effect of the pole piece is further improved, and the better quality of the pole piece is ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly explain the drawings needed in the description of the embodiments of the present utility model, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the contents of the embodiments of the present utility model and these drawings without inventive effort for those skilled in the art.

FIG. 1 is a schematic structural diagram of a pole piece production device according to an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a pole piece cutting device according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a structure of a ring cutter and a carrier roller according to an embodiment of the present utility model;

FIG. 4 is a second schematic view of a structure of a ring cutter and a carrier roller according to an embodiment of the present utility model;

fig. 5 is a partial enlarged view at a in fig. 4.

Reference numerals:

1000. pole piece production equipment;

100. a pole piece cutting device;

10. a support mechanism; 11. a support plate;

20. a first cutting mechanism; 21. a ring-shaped cutter; 22. a displacement box;

30. a second cutting mechanism; 31. a recessed portion; 32. a carrying roller; 321. a slotted ring; 3211. a rib; 3212. a slotted ring body; 322. a mounting ring; 323. a limiting ring; 324. a rotating shaft;

40. a driving mechanism; 41. a first driving member; 42. a second driving member; 43. a third driving member; 44. a fourth driving member;

200. a pole piece forming device;

300. a winding device;

400. a working table.

Detailed Description

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that, if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., these terms refer to the orientation or positional relationship based on the drawings, which are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.

In this application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.

The pole piece is a part of the battery and is divided into a positive pole piece and a negative pole piece. The pole pieces mainly comprise active substances, and the active substances of the positive pole piece and the negative pole piece are different in material selection. During production, a dry method is generally adopted to prepare the pole piece, active material particles are mainly prepared into slurry, then the slurry is prepared and molded through a pole piece molding device, the edge of a molded active material layer is cut through a cutting device, and finally the pole piece is wound on a winding roller.

In order to realize the production of the pole piece, as shown in fig. 1, the present embodiment provides a pole piece production device 1000, where the pole piece production device 1000 includes a pole piece forming device 200, and the pole piece forming device 200 is used for extruding pole piece raw materials to form a pole piece. The pole piece production device 1000 further comprises a pole piece cutting device 100 and a winding device 300, wherein the pole piece cutting device 100 is arranged at the downstream of the pole piece forming device 200, the pole piece cutting device 100 is used for cutting pole pieces extruded by the pole piece forming device 200 so that the size of the pole pieces meets production requirements, the winding device 300 is arranged at the downstream of the cutting device, and the winding device 300 is used for winding the pole pieces cut by the pole piece cutting device 100.

Further, as shown in fig. 1, the pole piece production device 1000 further includes a workbench 400, the pole piece forming device 200, the pole piece cutting device 100 and the winding device 300 are all disposed on the workbench 400, and the workbench 400 realizes a stable bearing effect on the above devices.

The existing pole piece cutting device 100 is typically a blade that faces and contacts the pole piece. The pole piece produced by the pole piece forming device 200 is wound on the winding roller through the cutter head, and the pole piece is cut off by the cutting edge of one side of the blade, which is close to the forming equipment, when passing through the blade. Considering that the pole piece prepared by adopting the dry method has poor mechanical property, the pole piece is easily pulled to break when being wound, a driving device is usually arranged on the pole piece forming device 200 so as to send out the formed pole piece, and the pole piece is prevented from being broken due to the fact that the pole piece is subjected to larger traction force of winding equipment.

However, the pole piece can be scratched by the blade of the side, which is close to the forming equipment, of the pole piece through the cutter head, so that the pole piece receives larger resistance, and the driving device on the pole piece forming device 200 continuously sends the pole piece to the side of the cutter head, so that the pole piece is easily accumulated on the cutting side, which is close to the forming equipment, of the cutter head, and the cutting effect on the pole piece is further affected.

In order to solve the above-mentioned problem, the pole piece cutting device 100 provided in this embodiment includes a first cutting mechanism 20, a second cutting mechanism 30, and a driving mechanism 40. The pole piece cutting device 100 further comprises a supporting mechanism 10, the first cutting mechanism 20 and the second cutting mechanism 30 are oppositely arranged, the second cutting mechanism 30 is provided with a concave portion 31 for the first cutting mechanism 20 to extend into, and the driving mechanism 40 is arranged on the supporting mechanism 10 and can drive the first cutting mechanism 20 and/or the second cutting mechanism 30 to rotate so that the first cutting mechanism 20 and the edge of the concave portion 31 are matched to cut the pole piece. Through the above-mentioned setting for the edge of depressed part 31 and pivoted first cutting mechanism 20 mutually support and cut the pole piece, reduce the resistance that the pole piece receives, avoid the pole piece to pile up, and then improve the cutting effect of pole piece.

Specifically, as shown in fig. 1 to 5, the first cutting mechanism 20 includes a circular cutter 21, the driving mechanism 40 includes a first driving member 41, the first driving member 41 is rotatably connected to the supporting mechanism 10 and is capable of driving the circular cutter 21 to rotate, and the circular cutter 21 is used for cutting pole pieces. The first driving member 41 may be a device such as a rotary motor that can drive the annular cutter 21 to rotate about its center. In operation, the first driving member 41 drives the annular cutter 21 to rotate, thereby realizing continuous cutting of the pole piece and further improving the cutting efficiency of the pole piece.

Further, as shown in fig. 1 and 2, the first cutting mechanism 20 further includes a displacement box 22, the displacement box 22 is disposed at an output end of the second driving member 42, the first driving member 41 is disposed on a side wall of the displacement box 22, the annular cutter 21 is disposed in the displacement box 22, and the output end of the first driving member 41 penetrates through the side wall of the displacement box 22 and is fixed with the cutter inside the displacement box 22. The bottom surface of the displacement box 22 is provided with an opening from which the bottom of the annular cutter 21 protrudes to cut the pole piece.

Further, as shown in fig. 1 and 2, the supporting mechanism 10 includes two oppositely disposed supporting plates 11, and the supporting plates 11 are disposed at the discharge end of the pole piece forming device 200. The driving mechanism 40 further comprises a third driving piece 43, two ends of the third driving piece 43 are respectively arranged on the corresponding supporting plates 11, the annular cutter 21 is arranged at the output end of the third driving piece 43, the third driving piece 43 extends along the width direction of the pole piece, and the third driving piece 43 can drive the annular cutter 21 to reciprocate along the width direction of the pole piece so as to adjust the position of the annular cutter 21, so that the pole piece cutting device 100 can cut edges of pole pieces with different widths, and the universality of the pole piece cutting device 100 is improved. The third driving member 43 may be a linear motor or a linear cylinder.

Further, the relative distance between the first cutting mechanism 20 and the second cutting mechanism 30 along the vertical direction is adjustable, so that the pole piece cutting device 100 can cut pole pieces with different thicknesses, and the universality of the pole piece cutting device 100 is further improved; meanwhile, the annular cutter 21 can better extend into the concave part 31 to complete the cutting of the pole piece, the phenomenon that the annular cutter 21 is insufficient in cutting the pole piece to form adhesion is avoided, and the pole piece has good cutting quality.

Specifically, as shown in fig. 1 and 2, the driving mechanism 40 further includes a second driving member 42, the second driving member 42 is disposed at an output end of the third driving member 43, the annular cutter 21 is disposed at an output end of the second driving member 42, and the second driving member 42 can drive the annular cutter 21 to reciprocate in a vertical direction, so that the annular cutter 21 better extends into the recess 31; and is suitable for cutting pole pieces with different thicknesses. The second driving member 42 may be a linear motor or a linear cylinder.

As shown in fig. 1-5, the second cutting mechanism 30 includes a carrying roller 32, two ends of the carrying roller 32 are rotatably connected with the corresponding supporting plate 11, a recess 31 is disposed on the carrying roller 32, and a pole piece is disposed between the recess 31 and the annular cutter 21. The portion of the annular cutter 21 facing the recess 31 can extend into the recess 31 and be fitted to the inner wall of the recess 31. The annular cutter 21 rotates under the action of the first driving member 41, and cooperates with the inner wall of the recess 31 to apply a shearing force to the pole piece, thereby shearing the pole piece.

Further, the driving mechanism 40 further includes a fourth driving member 44, the fourth driving member 44 is disposed on one of the support plates 11, the carrying roller 32 is disposed at an output end of the fourth driving member 44, and the fourth driving member 44 can drive the carrying roller 32 to rotate, so as to reduce resistance between the pole piece and the carrying roller 32 when passing through the carrying roller 32, and further help to avoid pole piece stacking wrinkles. Wherein the fourth driving member 44 may be a rotating motor.

Preferably, two carrying rollers 32 may be provided, two supporting plates 11 are in one-to-one correspondence with the carrying rollers 32, one end of each carrying roller 32 is connected to the corresponding supporting plate 11, and the axes of the two carrying rollers 32 are on the same straight line, and two first cutting mechanisms 20 are provided, and the two first cutting mechanisms 20 respectively correspond to two sides in the width direction of the pole piece so as to cut two side edges in the width direction of the pole piece.

In other embodiments, the carrying roller 32 is a long roller, and the two ends of the carrying roller 32 are provided with a plurality of concave portions 31, and the first cutting mechanism 20 is provided with two concave portions respectively corresponding to two sides of the pole piece in the width direction, so that two side edges of the pole piece in the width direction can be cut. Meanwhile, when the pole piece is cut, the bearing roller 32 can provide upward supporting force for the middle part of the pole piece, so that the dislocation of the edge of the pole piece caused by the downward collapse and deformation of the middle position of the pole piece is avoided as much as possible, and the cutting effect on the edge of the pole piece is affected.

Specifically, as shown in fig. 2-5, the bearing roller 32 includes a rotating shaft 324, and a plurality of assembly rings 322 and slot rings 321 sleeved on the rotating shaft 324, wherein the assembly rings 322 and the slot rings 321 are in interference fit with the rotating shaft 324, one end of the rotating shaft 324 is connected with the fourth driving member 44, and when the fourth driving member 44 drives the rotating shaft 324 to rotate, the assembly rings 322 and the slot rings 321 can be driven to rotate together.

One end surface of a groove ring body 3212 of the groove ring 321 extends out of the annular convex rib 3211 along the axial direction of the bearing roller 32, wherein the outer diameter of the convex rib 3211 is smaller than that of the groove ring body 3212, and the concave parts 31 are formed between two opposite end surfaces of two adjacent groove rings 321 and the side surfaces of the convex rib 3211. When the pole piece is cut, the number and the positions of the assembly rings 322 and the groove rings 321 can be adjusted, and the corresponding number of first cutting mechanisms 20 are arranged to adapt to pole pieces with different width requirements, so that the edge of the pole piece can be cut and trimmed, the whole width of the pole piece can be divided, and the compatibility of equipment is improved.

Preferably, as shown in fig. 2-4, the bearing roller 32 further includes a limiting ring 323, the limiting ring 323 is disposed at two ends of the rotating shaft 324 and located at the outer sides of the groove ring 321 and the assembly ring 322, the rotating shaft 324 and the limiting ring 323 are integrally formed, and the limiting ring 323 is helpful to limit the assembly ring 322 and the groove ring 321, so as to avoid the assembly ring 322 and the groove ring 321 from slipping from the rotating shaft 324 in use.

Note that in the description of this specification, a description referring to terms "some embodiments", "other embodiments", and the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing description is only of the preferred embodiments of the utility model and the technical principles employed. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.

Claims (10)

1. Pole piece cutting device, its characterized in that includes:

a first cutting mechanism (20); and

the pole piece cutting device comprises a second cutting mechanism (30) and a driving mechanism (40), wherein the driving mechanism (40) is configured to drive the first cutting mechanism (20) and/or the second cutting mechanism (30) to rotate, the first cutting mechanism (20) and the second cutting mechanism (30) are oppositely arranged, the pole piece is arranged between the first cutting mechanism (20) and the second cutting mechanism (30), the second cutting mechanism (30) is provided with a concave part (31), and the first cutting mechanism (20) can extend into the concave part (31) so as to cut the pole piece along the length direction of the pole piece.

2. The pole piece cutting device according to claim 1, wherein the drive mechanism (40) comprises:

the first cutting mechanism (20) comprises a circular cutter (21), the first driving piece (41) is configured to drive the circular cutter (21) to rotate, and the circular cutter (21) is used for cutting the pole piece.

3. The pole piece cutting device according to claim 2, wherein the drive mechanism (40) further comprises:

a second driving member (42) configured to drive the annular cutter (21) to reciprocate in a vertical direction;

and a third driving member (43) configured to drive the annular cutter (21) to reciprocate in the width direction of the pole piece.

4. The pole piece cutting device according to claim 1, wherein the second cutting mechanism (30) comprises a carrier roller (32), the drive mechanism (40) further comprising a fourth drive member (44), the fourth drive member (44) being configured to drive the carrier roller (32) in rotation.

5. The pole piece cutting device according to claim 4, wherein two carrying rollers (32) are provided, axes of the two carrying rollers (32) are collinear, the concave portions (31) are provided on the carrying rollers (32), the number of the first cutting mechanisms (20) is two, and the first cutting mechanisms (20) are provided corresponding to the concave portions (31) on the carrying rollers (32).

6. The pole piece cutting device according to claim 4, wherein the carrying roller (32) is a long roller, the concave portions (31) are formed at two ends of the carrying roller (32), the number of the first cutting mechanisms (20) is two, and the first cutting mechanisms (20) are correspondingly arranged with the concave portions (31) on the carrying roller (32).

7. The pole piece cutting device according to any of claims 4-6, wherein the carrier roller (32) comprises:

a rotating shaft (324);

the plurality of groove rings (321) are sleeved on the periphery of the rotating shaft (324), and two adjacent groove rings (321) jointly form the concave part (31).

8. The pole piece cutting device according to claim 7, wherein one of the end faces of the slot ring body (3212) of the slot ring (321) extends out of the rib (3211) along the axial direction of the carrying roller (32), and the outer diameter of the rib (3211) is smaller than that of the slot ring body (3212).

9. The pole piece cutting device of claim 7, wherein the carrier roller (32) further comprises:

and limiting rings (323) are arranged at two ends of the rotating shaft (324) and are positioned at the outer sides of the groove rings (321).

10. Pole piece production equipment, characterized by comprising a pole piece forming device (200) and a winding device (300), and further comprising a pole piece cutting device according to any one of claims 1-9, wherein the pole piece cutting device is arranged at the downstream of the pole piece forming device (200) and is configured to cut the pole piece extruded by the pole piece forming device (200), and the winding device (300) is arranged at the downstream of the pole piece cutting device and is configured to wind the cut pole piece.