CN220692058U

CN220692058U - Feeding device of electrode film calender

Info

Publication number: CN220692058U
Application number: CN202322369625.2U
Authority: CN
Inventors: 孙玉平; 闫坤; 卢建岐; 车玲娟; 陈希雯; 孙伟
Original assignee: Gmcc Electronic Technology Wuxi Co ltd
Current assignee: Gmcc Electronic Technology Wuxi Co ltd
Priority date: 2023-09-01
Filing date: 2023-09-01
Publication date: 2024-03-29
Anticipated expiration: 2033-09-01

Abstract

The utility model discloses a feeding device of an electrode film calender, which comprises a granulator, a weighing device, a flattening device, a conveyor belt assembly, a flattening assembly and a preforming roller, wherein the granulator, the weighing device and the flattening device are arranged above a feeding end of the conveyor belt assembly; the granulator, the paving device, the conveyor belt component, the flattening component and the preforming roller are connected between the two vertical plates. The feeding device of the utility model sequentially carries out granulation, screening, paving, finishing, leveling compaction and prepressing treatment on the powder, and the formed continuous film with uniform thickness and regular shape of the electrode film saves the subsequent treatment procedures of the electrode film and raw material cost and processing cost.

Description

Feeding device of electrode film calender

Technical Field

The utility model relates to the technical field of energy storage element electrode film production, in particular to a feeding device of an electrode film calender.

Background

With the shortage of traditional fossil energy and the increasing demand for energy by humans, the development of efficient and green alternative energy has been urgent. The energy storage element is used as an important application component in the field of new energy, is widely applied to various industries such as vehicles, electronic products, energy storage systems, transportation, smart grids, industrial energy conservation and consumption reduction and the like due to the excellent energy storage characteristic, and is an important factor related to the development of the energy storage element technology.

The electrode is a core component of the energy storage device, and the production process of the electrode is mainly divided into a solvent wet coating process or a dry forming electrode process. The dry electrode forming process includes mixing the materials directly in dry powder state, mixing to form powder mixture, rolling to form electrode film with certain thickness, and compounding the electrode film with current collector to form electrode.

Currently, when an electrode film is processed by a calender based on dry forming, a mixed electrode powder material is generally fed directly between compression rollers of a roller press, and the powder material is rolled into the electrode film by the compression rollers. Such a way has the following disadvantages: (1) When powder enters between the compression rollers, the powder of each part is unevenly distributed, so that blocking or accumulation is easy to occur, and once blocking or accumulation of powder occurs, the electrode film is easy to cause wrinkling or material shortage, thereby influencing the quality of the electrode film; (2) Because the powder is directly fed between the press rollers, the powder continuously extends to the two ends of the press rollers under the action of the press rollers, after the powder is rolled into an electrode film, the two sides of the electrode film can be provided with very wide and irregularly-shaped edge-extending materials, and the unnecessary irregularly-shaped edge-extending materials are sheared off by subsequent treatment, so that great material waste can be caused, and the raw material cost is high.

Disclosure of Invention

The applicant provides a reasonable feeding device of an electrode film calender aiming at the defects of the existing electrode film dry forming equipment and method, wherein the feeding device is used for preprocessing powder and then conveying the powder to a position between press rollers for rolling, so that the condition of blocking or stacking is prevented, the quality of an electrode film is ensured, the occurrence of edge-extending materials is avoided, and the raw material cost is saved.

The technical scheme adopted by the utility model is as follows:

the feeding device of the electrode film calender comprises a granulator, a weighing device, a flattening device, a conveyor belt assembly, a flattening assembly and a preforming roller, wherein the granulator, the weighing device and the flattening device are arranged above a feeding end of the conveyor belt assembly; the granulator, the paving device, the conveyor belt component, the flattening component and the preforming roller are connected between the two vertical plates.

As a further improvement of the above technical scheme:

gap value d1 of paving device and conveyor belt assembly > gap value d2 of flattening assembly and conveyor belt assembly > gap value d3 of conveyor belt assembly and conveyor belt assembly.

The granulator is fixed to the two vertical plates through the housing, the weighing device is arranged in the housing, second scraping plates are respectively arranged below the housing and on the front side and the rear side of the bidirectional auger, and the second scraping plates can further arrange powder.

A screen, a granulator and a granulating motor are arranged in a granulating bin of the granulator, the granulator is arranged above the screen, and the granulating motor is connected with the granulator through a crank-link mechanism; the screen cloth is V-arrangement net, sets up in the well lower part of granulation storehouse, and the granulator sets up in the low position top of screen cloth.

The crank connecting rod mechanism comprises a crankshaft, a swinging rod, a crank and a supporting rod, wherein the crankshaft is connected to the granulating motor, the crank is connected to the granulator, the swinging rod is connected with the crankshaft and the crank, one end of the swinging rod is connected to the granulating bin through the supporting rod, and the swinging rod is rotatably hinged to the supporting rod.

The bottom surface of a vibration flattening plate of the flattening assembly is provided with a hot plate, a flattening supporting plate is arranged above the vibration flattening plate, the vibration flattening plate is connected with the flattening supporting plate through a guide rod, at least one electromagnet is arranged on the flattening supporting plate, and the flattening supporting plate is fixed on the vertical plate through a fastener.

The spreading device is a bidirectional auger, a left-handed blade is arranged on one half of the roller surface of the bidirectional auger, and a right-handed blade is arranged on the other half of the roller surface of the bidirectional auger.

A plurality of protruding blocks can be arranged on the roller surface of the bidirectional auger.

The vertical plate is provided with a mounting groove, two end parts of the preforming roller are clamped in the mounting groove, and two end parts of the preforming roller are connected to the vertical plate through a gap adjusting piece.

The two ends of the circulating belt body of the conveying belt assembly are provided with rollers, the rollers at the feeding end are connected with a conveying motor, the rollers at the feeding end are provided with tensioning adjusting blocks, and adjusting buckles are inserted into the tensioning adjusting blocks.

The beneficial effects of the utility model are as follows:

the powder is subjected to granulation, screening, paving, finishing, leveling compaction and prepressing in sequence, preformed into a continuous membrane on the feeding device, then sent to the compression rollers of the roller press for rolling, and when the continuous membrane enters the compression rollers, each part is compacted uniformly, so that the condition of blocking or stacking is avoided, the condition of wrinkling or lack of the rolled electrode membrane is avoided, and the quality of the electrode membrane is ensured; the pretreated continuous membrane pretreated and formed by the feeding device has uniform thickness and regular shape, the electrode membrane can be directly formed into a finished product in one step after the membrane is rolled by the press roller, the formed continuous membrane with uniform thickness and regular shape of the electrode membrane can not generate irregular-shaped edge-extending materials on two sides of the electrode membrane, the subsequent treatment procedures of the electrode membrane are saved, and the raw material cost and the processing cost are saved.

The granulating motor of the granulator is connected with the granulator through the crank-link mechanism, the granulating motor can realize up-and-down reciprocation of the granulator only by rotating along a single direction, the granulating motor does not need to be repeatedly switched between forward and reverse rotation, the granulator can be driven to continuously work at a constant temperature by selecting a common motor, the requirement of the granulating motor is reduced, and the cost of the motor is reduced.

The clearance values among the bidirectional auger, the flattening assembly, the preforming roller and the conveying belt assembly are sequentially reduced, so that powder is gradually compacted and formed into continuous preforming films from loose to solid, and the uniformity of the films is ensured.

The second scraping plate at the front side of the bidirectional auger can scrape the powder, further arrange the paved powder, and ensure the uniformity of the powder in each part; the second scraping plate at the rear side of the bidirectional auger and the vertical plates at the two sides can play a role of blocking materials together, powder is blocked in the area range of the conveying belt assembly, and the powder is prevented from falling off the conveying belt assembly to cause waste of raw materials.

Drawings

Fig. 1 is a perspective view of an electrode film calender employing the present utility model.

Fig. 2 is a cross-sectional view of an electrode film calender.

Fig. 3 is a perspective view of the present utility model.

Fig. 4 is an enlarged view of a portion a in fig. 3.

Fig. 5 is a cross-sectional view of the present utility model.

Fig. 6 is an enlarged view of the portion B in fig. 5.

Fig. 7 is an exploded view of the pelletizer.

Fig. 8 is an enlarged view of a portion C in fig. 7.

Fig. 9 is a perspective view of one embodiment of a bi-directional auger.

Fig. 10 is a perspective view of another embodiment of a bi-directional auger.

Fig. 11 is an enlarged view of a portion D in fig. 10.

In the figure: 1. a roller press; 11. a first frame; 12. a press roller; 13. a first guide roller; 14. a first scraper; 15. a roll-in motor;

2. a feeding device; 21. a granulator; 211. granulating bin; 212. a screen; 213. a granulator; 214. A granulating motor; 215. a crankshaft; 2151. a first journal; 216. swing rod; 2161. a connection hole; 217. a crank; 2171. a second journal; 218. a support rod; 22. A two-way auger; 221. a left-hand blade; 222. a right-handed blade; 223. a bump; 23. a conveyor belt assembly; 231. a circulating belt; 232. a roller; 233. a conveying motor; 234. tensioning adjusting blocks; 235. an adjusting buckle; 24. a flattening assembly; 241. vibrating the flattening plate; 242. a hot plate; 243. flattening the supporting plate; 244. a guide rod; 245. an electromagnet; 25. preforming a roller; 26. a vertical plate; 261. a mounting groove; 262. a gap adjusting piece; 27. a weighing device; 271. a housing; 28. a second scraper; 29. a cross arm;

3. a winding machine; 31. a second frame; 32. a wind-up roll; 33. a second guide roller; 34. a bracket; 35. an operation box;

4. an electric control cabinet;

5. an electrode film.

Detailed Description

The following describes specific embodiments of the present utility model with reference to the drawings.

As shown in fig. 1 and 2, the electrode film calender adopting the utility model mainly comprises a roller press 1, a feeding device 2, a winding machine 3 and an electric control cabinet 4, wherein the roller press 1, the feeding device 2 and the winding machine 3 are respectively connected with the electric control cabinet 4, and the electric control cabinet 4 controls the roller press 1, the feeding device 2 and the winding machine 3 to work. The feeding device 2 is arranged above the roller press 1, and the winding machine 3 is arranged on one side of the roller press 1.

As shown in fig. 1 and 2, a first frame 11 of the roll squeezer 1 is provided with two pairs of rolls 12 and at least one first guide roll 13, and the electrode film 5 is drawn out by the first guide roll 13 after being rolled and formed by the two pairs of rolls 12. Each press roller 12 is connected with one roll-in motor 15 respectively, and each press roller 12 is driven to rotate by the independent roll-in motor 15, so that the consistency of the linear speed of each press roller 12 is guaranteed, the rolling quality of the electrode film 5 is guaranteed, the working efficiency of the press rollers 12 is improved, and the production efficiency of the electrode film 5 is improved. The rolling motor 15 adopts a servo motor, and the servo motor has the advantages of stable operation, strong overload resistance, short dynamic response time, low heating, low energy consumption and low noise, and is more beneficial to improving the rolling quality and the rolling efficiency. The first scraping plate 14 is arranged on the outer side of the two pairs of the pressing rollers 12 and obliquely above the pressing rollers 12, and the first scraping plate 14 and the pressing rollers 12 can be in soft contact, such as cotton felt and the like, and the function of the cleaning before rolling is performed on the surfaces of the pressing rollers 12.

As shown in fig. 1 and 2, a plurality of winding rollers 32 and second guide rollers 33 are arranged on the side surface of a second frame 31 of the winding machine 3, and an operation box 35 is arranged on the top surface of the second frame 31 through a bracket 34; the electrode film 5 roll-formed by the roll squeezer 1 is led to the wind-up roll 32 for winding through the second guide roll 33, and the operation box 35 can control the winding work of the wind-up roll 32.

As shown in fig. 3 and 5, the feeding device 2 comprises a granulator 21, a weighing device 27, a bidirectional auger 22, a conveying belt assembly 23, a flattening assembly 24 and a pre-forming roller 25, wherein the granulator 21, the bidirectional auger 22, the conveying belt assembly 23, the flattening assembly 24 and the pre-forming roller 25 are connected between two vertical plates 26, and the vertical plates 26 are fixedly connected to the first frame 11 through cross arms 29. The granulator 21, weighing means 27, bi-directional auger 22 are arranged above the feed end of the conveyor belt assembly 23. The weighing device 27 is arranged below the granulator 21, and the granulator 21 is in floating connection with the weighing device 27; the bottom of the granulator 21 is provided with a cover 271, a weighing device 27 is arranged in the cover 271, the weighing device 27 and the cover 271 are fixed on the top sides of the two vertical plates 26, and the cover 271 is used for preventing the feeding of the granulator 21 and the powder when the bidirectional auger 22 is pavedThe protection of the dust overflow and weighing device 27, the pre-warning and control of the highest and lowest storage of the powder in the granulator 21 are completed by the weighing device 27. The bidirectional auger 22 is positioned under the granulator 21, the powder after granulation and screening by the granulator 21 falls to the feeding end of the conveyor belt assembly 23, and the bidirectional auger 22 pushes and spreads the powder from the middle part of the conveyor belt assembly 23 to the two sides to the whole bandwidth, so that the uniformity of separation and distribution is ensured. Second scrapers 28 are respectively arranged below the housing 271 and on the front side and the rear side of the bidirectional auger 22, the second scrapers 28 are arranged on the outer side of the housing 271, and the second scrapers 28 on the front side of the bidirectional auger 22 can scrape and further sort the paved powder, so that the uniformity of the powder in each part is ensured; the second scraping plate 28 at the rear side of the bidirectional auger 22 and the vertical plates 26 at the two sides can play a role of blocking materials together, so that powder is blocked in the area range of the conveyer belt assembly 23, and the waste of raw materials caused by falling of the powder from the conveyer belt assembly 23 is prevented. The flattening component 24 is arranged above the middle of the conveying belt component 23, powder falling onto the conveying belt component 23 is paved by the bidirectional auger 22 and is arranged by the second scraping plate 28, the conveying belt component 23 is conveyed to the flattening component 24, and the powder is flattened and compacted by the flattening component 24. The preforming roller 25 is arranged obliquely above the discharge end of the conveying belt assembly 23, the powder compacted by the flattening assembly 24 is conveyed to the discharge end by the conveying belt assembly 23, and is prepressed into a continuous film sheet under the rolling action of the preforming roller 25 and then is output. The clearance values between the bidirectional auger 22, the flattening assembly 24, the preforming roller 25 and the conveyer belt assembly 23 are sequentially reduced, namely the clearance value d between the bidirectional auger 22 and the conveyer belt assembly 23 ₁ >Gap value d between flattening assembly 24 and conveyor belt assembly 23 ₂ >Gap value d between conveyor belt assemblies 23 and conveyor belt assembly 23 ₃ The powder is gradually compacted and formed into a continuous preformed membrane from loose to solid, and the uniformity of the membrane is ensured. The powder is sequentially granulated, screened, paved, tidied, beaten, compacted and pre-pressed by the feeding device 2, the powder is preformed into a continuous film on the feeding device 2 and then is sent between the press rolls 12 of the roller press 1 for rolling, and when the continuous film enters between the press rolls 12, each part is compacted uniformly and no blocking or blocking occursThe stacking condition of the electrode film 5 can not cause the wrinkling or material shortage of the rolled electrode film 5, so that the quality of the electrode film 5 is ensured; the pretreated continuous membrane which is pretreated and formed by the feeding device 2 has uniform thickness and regular shape, the membrane can be directly formed into a finished product in one step after being rolled by the press roller 12, the formed continuous membrane with uniform thickness and regular shape of the electrode membrane 5 can not generate irregular-shaped edge-extending materials on two sides of the electrode membrane 5, the subsequent treatment procedures of the electrode membrane 5 are saved, and the raw material cost and the processing cost are saved.

As shown in fig. 3, 5 and 7, a screen 212, a granulator 213 and a granulating motor 214 are provided in a granulating bin 211 of the granulator 21; the screen 212 is a V-shaped mesh and is disposed at the middle lower portion of the granulating bin 211, and the granulator 213 is disposed above the low-lying portion of the screen 212. The granulating motor 214 is fixedly connected to the side of the granulating bin 211, a spindle of the granulating motor 214 is connected to a rotating shaft of the granulator 213 through a crank-link mechanism, as shown in fig. 7 and 8, the crank-link mechanism comprises a crankshaft 215, a swinging rod 216, a crank 217 and a supporting rod 218, the crankshaft 215 is connected to the end of the spindle of the granulating motor 214, the crank 217 is connected to the end of the rotating shaft of the granulator 213, the swinging rod 216 is connected to the crankshaft 215 and the crank 217, one end of the swinging rod 216 is connected to the side of the granulating bin 211 through the supporting rod 218, and the swinging rod 216 is rotatably hinged to the supporting rod 218. The outer end surface of the crankshaft 215 is provided with a first journal 2151 extending outwards along the axial direction, the outer end surface of the crank 217 is provided with a second journal 2171 extending outwards along the axial direction, the swing rod 216 is provided with a through oblong connecting hole 2161, the first journal 2151 and the second journal 2171 are arranged in the connecting hole 2161 in a penetrating way, the first journal 2151 and the second journal 2171 can slide in the connecting hole 2161, when the granulating motor 214 drives the crankshaft 215 to rotate, the crankshaft 215 drives the swing rod 216 to swing up and down around the central shaft of the supporting rod 218 through the first journal 2151, and the swing rod 216 drives the crank 217 through the second journal 2171 and further drives the granulator 213 to rotate up and down in a reciprocating way, so that granulation is realized. The granulating motor 214 is connected with the granulator 213 through a crank-link mechanism, unidirectional rotation (forward rotation or reverse rotation) of the granulating motor 214 can be converted into up-and-down reciprocating rotation of the granulator 213 through the crank-link mechanism, namely, the granulating motor 214 can realize up-and-down reciprocating of the granulator 213 only by rotating along a single direction, the granulating motor 214 does not need to be repeatedly switched between forward and reverse rotation, the granulator 213 can be driven to continuously work at a constant temperature by selecting a common motor, the requirement of the granulating motor 214 is reduced, and the cost of the motor is reduced.

As shown in fig. 9, in one embodiment, a left-handed blade 221 is disposed on one half of the roller surface of the bidirectional auger 22, and a right-handed blade 222 is disposed on the other half of the roller surface, and when the bidirectional auger 22 rotates, the left-handed blade 221 and the right-handed blade 222 push and spread the powder from the middle to two sides. As shown in fig. 10 and 11, in another embodiment, a plurality of protruding blocks 223 may be further disposed on the roller surface of the bidirectional auger 22, and the plurality of protruding blocks 223 may crush and spread the powder, which is more beneficial to spreading the powder and improves the uniformity of separation and distribution.

As shown in fig. 3 and 5, rollers 232 are disposed at two ends of the endless belt body 231 of the conveyor belt assembly 23, two ends of the rollers 232 are disposed on mounting holes of the vertical plate 26 in a penetrating manner, the rollers 232 at the feeding end are connected with a conveying motor 233, and the conveying motor 233 is fixedly connected to the vertical plate 26. The roller 232 at the feeding end is arranged on the end part of the vertical plate 26 in a penetrating way, the tension adjusting block 234 is internally provided with the adjusting buckle 235, the adjusting buckle 235 is abutted against the end part of the roller 232, and the tension degree of the circulating belt 231 can be adjusted by adjusting the tension adjusting block 234 and the adjusting buckle 235 so as to adapt to the conveying requirement of powder.

As shown in fig. 6, a heat plate 242 is arranged on the bottom surface of a vibration platen 241 of the flattening assembly 24, a flattening supporting plate 243 is arranged above the vibration platen 241, the flattening supporting plate 243 is fixed on the vertical plate 26 through a fastener, the vibration platen 241 is connected with the flattening supporting plate 243 through a guide rod 244, at least one electromagnet 245 is arranged on the flattening supporting plate 243, the electromagnet 245 is connected with the vibration platen 241, the electromagnet 245 can drive the vibration platen 241 to vibrate up and down, compaction of powder is achieved, and the heat plate 242 on the bottom surface of the vibration platen 241 can heat the powder, so that the powder is more beneficial to compaction and forming.

As shown in fig. 3 and 4, the vertical plate 26 is provided with a mounting groove 261 corresponding to the preform drum 25, and both ends of the preform drum 25 are fitted into the mounting groove 261. The ends of the preform roller 25 are connected to the riser 26 by means of a gap adjustment tab 262, and the gap between the preform roller 25 and the conveyor belt assembly 23 can be adjusted to accommodate the pre-compression requirements of the powder by adjusting the gap adjustment tab 262.

In actual use, electrode powder is granulated, screened, paved, arranged, heated and flattened by the feeding device 2, and then is sent to the roller press 1 to be rolled into the electrode film 5, and the electrode film is rolled by the rolling machine 3.

The above description is illustrative of the utility model and is not intended to be limiting, and the utility model may be modified in any form without departing from the spirit of the utility model.

Claims

1. A feeding device of an electrode film calender, which is characterized in that: the device comprises a granulator (21), a weighing device (27), a paving device, a conveyor belt assembly (23), a flattening assembly (24) and a preforming roller (25), wherein the granulator (21), the weighing device (27) and the paving device are arranged above a feeding end of the conveyor belt assembly (23), the weighing device (27) and the paving device are positioned below the granulator (21), the flattening assembly (24) is arranged above the middle part of the conveyor belt assembly (23), the preforming roller (25) is arranged at a discharging end of the conveyor belt assembly (23), and a gap is reserved among the flattening device, the flattening assembly (24), the preforming roller (25) and the conveyor belt assembly (23); the granulator (21), the paving device, the conveyor belt assembly (23), the flattening assembly (24) and the preforming roller (25) are connected between two vertical plates (26).

2. The feeding device of an electrode film calender according to claim 1, wherein: gap value d of paving device and conveyer belt assembly (23) ₁ >Gap value d between flattening assembly (24) and conveying belt assembly (23) ₂ >Gap value d between conveyor belt assembly (23) and conveyor belt assembly (23) ₃ 。

3. The feeding device of an electrode film calender according to claim 1, wherein: the granulator (21) is fixed to two vertical plates (26) through a housing (271), a weighing device (27) is arranged in the housing (271), second scraping plates (28) are respectively arranged below the housing (271) and on the front side and the rear side of the bidirectional auger (22), and the second scraping plates (28) can further arrange powder.

4. The feeding device of an electrode film calender according to claim 1, wherein: a screen (212), a granulator (213) and a granulating motor (214) are arranged in a granulating bin (211) of the granulator (21), the granulator (213) is arranged above the screen (212), and the granulating motor (214) is connected with the granulator (213) through a crank-link mechanism; the screen (212) is a V-shaped net and is arranged at the middle lower part of the granulating bin (211), and the granulator (213) is arranged above the low-lying part of the screen (212).

5. The feeding device of an electrode film calender according to claim 4, wherein: the crank connecting rod mechanism comprises a crankshaft (215), a swing rod (216), a crank (217) and a supporting rod (218), wherein the crankshaft (215) is connected to the granulating motor (214), the crank (217) is connected to the granulator (213), the swing rod (216) is connected with the crankshaft (215) and the crank (217), one end of the swing rod (216) is connected to the granulating bin (211) through the supporting rod (218), and the swing rod (216) is rotatably hinged to the supporting rod (218).

6. The feeding device of an electrode film calender according to claim 1, wherein: the bottom surface of a vibration flattening plate (241) of the flattening assembly (24) is provided with a hot plate (242), a flattening supporting plate (243) is arranged above the vibration flattening plate (241), the vibration flattening plate (241) is connected with the flattening supporting plate (243) through a guide rod (244), at least one electromagnet (245) is arranged on the flattening supporting plate (243), and the flattening supporting plate (243) is fixed on the vertical plate (26) through a fastener.

7. The feeding device of an electrode film calender according to claim 1, wherein: the paving device is a bidirectional auger (22), a left-handed blade (221) is arranged on one half of the roller surface of the bidirectional auger (22), and a right-handed blade (222) is arranged on the other half of the roller surface.

8. The feeding device of an electrode film calender according to claim 1, wherein: a plurality of protruding blocks (223) can be arranged on the roller surface of the bidirectional auger (22).

9. The feeding device of an electrode film calender according to claim 1, wherein: the vertical plate (26) is provided with a mounting groove (261), two end parts of the preforming roller (25) are clamped in the mounting groove (261), and two end parts of the preforming roller (25) are connected to the vertical plate (26) through a gap adjusting piece (262).

10. The feeding device of an electrode film calender according to claim 1, wherein: the two ends of the circulating belt body (231) of the conveying belt assembly (23) are provided with rollers (232), the rollers (232) at the feeding end are connected with a conveying motor (233), the rollers (232) at the feeding end are provided with tensioning adjusting blocks (234), and adjusting buckles (235) are inserted in the tensioning adjusting blocks (234).