Diaphragm unwinding device

Abstract

The utility model discloses a diaphragm unreeling device which comprises a mounting plate, an unreeling mechanism arranged on a first side of the mounting plate, a tension mechanism for detecting and adjusting tension of an unreeled diaphragm material belt, and an iron removal mechanism and a static electricity removal mechanism which are sequentially arranged below the tension mechanism and are used for removing iron and static electricity of the diaphragm material belt, the device further comprises multiple sets of transition rollers, and the multiple sets of transition rollers are arranged on the unwinding mechanism, the tension mechanism, the iron removal mechanism and the static electricity removal mechanism at intervals along the conveying path of the diaphragm material belt. The transition rollers are arranged between the working procedures, so that the tension of the diaphragm material belt can be better controlled, and the flatness of the diaphragm material belt in the machining process is ensured; and through supporting and guiding of the transition roller, the diaphragm material belt can be smoothly conveyed along the conveying path, and the smoothness of the machining process is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of battery manufacturing, and particularly relates to a diaphragm unwinding device. Background Art

[0002] In the existing diaphragm unwinding device, the diaphragm tape needs to be pretreated through multiple processes before being conveyed into the thermal compounding process, including but not limited to a tape detection unit for detecting the tape after the diaphragm is joined, a tension mechanism for the diaphragm tape, a deironing mechanism, an antistatic mechanism, etc. Between these pretreatment processes, the diaphragm tape is often subjected to excessive tension or becomes loose, unable to ensure the uniformity of the tension of the diaphragm tape during the processing, thus unable to ensure the flatness of the diaphragm tape during the processing, and further affecting the quality of the final product; moreover, the flow of the diaphragm tape between the various processing units lacks effective guidance, making it difficult for the conveying process of the diaphragm tape to be continuously smooth. Summary of the Utility Model

[0003] To solve the above technical problems, the utility model provides a diaphragm unwinding device.

[0004] The technical solution of the utility model is: a diaphragm unwinding device, including a mounting plate, an unwinding mechanism arranged on the first side of the mounting plate, a tension mechanism for detecting and adjusting the tension of the unwound diaphragm tape, a deironing mechanism and an antistatic mechanism arranged in sequence below the tension mechanism for deironing and antistatic of the diaphragm tape, and further including multiple groups of transition rollers. The multiple groups of transition rollers are spaced apart between the unwinding mechanism, the tension mechanism, the deironing mechanism, and the antistatic mechanism along the conveying path of the diaphragm tape.

[0005] Its further technical solution is:

[0006] The unwinding mechanism includes two unwinding shafts for mounting the diaphragm cartridges, and a splicing platform and a tape detection unit for splicing the diaphragm tape are arranged in sequence at the rear end of the unwinding shaft.

[0007] Its further technical solution is:

[0008] The multiple groups of transition rollers include a second transition roller, a third transition roller, and a fourth transition roller. The second transition roller and the third transition roller are arranged at intervals in the vertical direction, and the third transition roller and the fourth transition roller are arranged in a staggered manner in the vertical direction.

[0009] Its further technical solution is:

[0010] The tension mechanism is arranged at the rear end of the second transition roller and the third transition roller, and the upper part of the tension roller of the tension mechanism is flush with the lower part of the roller of the second transition roller, and the lower part of the tension roller is flush with the upper part of the roller of the third transition roller.

[0011] Its further technical solution is:

[0012] The multiple groups of transition rollers further include a first transition roller disposed between the tape receiving platform and the tape detection unit, and the first transition roller and the second transition roller are arranged in a horizontal dislocation manner.

[0013] Its further technical solution is:

[0014] An edge correction mechanism is further provided along the conveying path of the diaphragm tape, including an edge correction sensor for detecting the edge position of the diaphragm tape and an edge correction driving member for driving the axial movement of the diaphragm tape.

[0015] Its further technical solution is:

[0016] The unwinding mechanism includes an unwinding shaft for mounting the diaphragm material cylinder and an unwinding driving module for driving the unwinding shaft to rotate to unwind the diaphragm. The unwinding shaft is rotatably connected to the mounting plate through a bearing, the unwinding driving module is disposed on the second side of the mounting plate, and the driving output end of the unwinding driving module is in transmission connection with the unwinding shaft.

[0017] Its further technical solution is:

[0018] The unwinding driving module includes an unwinding motor, a speed reducer and a synchronous belt unit. The output end of the unwinding motor is connected to the input end of the speed reducer; the driving pulley of the synchronous belt unit is sleeved on the outer periphery of the output end of the speed reducer, and the driven pulley of the synchronous belt unit is sleeved on the outer periphery of the unwinding shaft.

[0019] Its further technical solution is:

[0020] The tension mechanism includes a tension control roller and a tension driving member for driving the tension control roller. The tension control roller swings under the drive of the tension driving member to change the tension of the diaphragm tape wound around the tension control roller.

[0021] Its further technical solution is:

[0022] The tension control roller includes a tension roller shaft and tension roller cylinders rotatably connected to the tension roller shaft at both ends through bearings. The driving output end of the tension driving member is in transmission connection with a tension driving shaft, and both ends of the tension roller shaft are in transmission connection with the tension driving shaft through connecting plates.

[0023] The beneficial technical effects of the present utility model are: By arranging transition rollers between processes such as the unwinding mechanism, the tape detection unit, the tension mechanism, the iron removal mechanism, and the static elimination mechanism, the tension of the diaphragm tape can be better controlled, preventing the situation of too large or too small tension, and ensuring the flatness of the diaphragm tape during the processing process; moreover, through the support and guidance of the transition rollers, the diaphragm tape can be smoothly conveyed along the conveying path, ensuring the smoothness of the processing process. Description of the Drawings

[0024] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0025] Figure 2 is a top view schematic diagram of the overall structure of the present utility model;

[0026] Figure 3 is a side view schematic diagram of the overall structure of the present utility model;

[0027] Figure 4 is a schematic diagram of the unwinding mechanism of the present utility model;

[0028] Figure 5 is a schematic diagram of the tension mechanism of the present utility model;

[0029] Figure 6 is a schematic diagram of the structure of the transition roller of the present utility model;

[0030] Wherein: 1. mounting plate; 2. unwinding mechanism; 21. unwinding shaft; 22. unwinding drive module; 221. unwinding motor; 222. reducer; 223. driving wheel; 224. driven wheel;

[0031] 3. tape connecting platform; 4. roller assembly; 40. transition roller; 401. roller shaft of the transition roller; 402. roller barrel of the transition roller; 41. first transition roller; 42. second transition roller; 43. third transition roller; 44. fourth transition roller;

[0032] 5. tension mechanism; 51. tension detection unit; 52. tension control roller; 521. tension roller shaft; 522. tension roller barrel; 523. tension drive shaft; 53. tension drive member;

[0033] 6. iron removal mechanism; 7. static elimination mechanism; 8. deviation rectifying mechanism; 81. deviation rectifying sensor; 82. deviation rectifying drive member; 9. tape detection unit. Detailed implementation manners

[0034] In order to be able to more clearly understand the technical means of the present utility model and implement it in accordance with the content of the specification, the following combines the drawings and embodiments to further describe in detail the specific implementation manners of the present utility model. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0035] As Figures 1 to 3A diaphragm unwinding device shown in the figure includes an upper diaphragm unwinding assembly and a lower diaphragm unwinding assembly with the same structure. Both the upper diaphragm unwinding assembly and the lower diaphragm unwinding assembly include a mounting plate 1, an unwinding mechanism 2 arranged on the first side of the mounting plate 1, a tape connecting platform 3 for connecting the diaphragm tape after unwinding, a roller assembly 4, a tension mechanism 5, an iron removing mechanism 6 for removing iron and static electricity from the unwound diaphragm tape, an electrostatic removing mechanism 7, and a deviation rectifying mechanism 8 for position detection and path deviation rectification of the diaphragm tape.

[0036] As Figure 4 , the unwinding mechanism 2 includes an unwinding shaft 21 for mounting the diaphragm cartridge and an unwinding drive module 22 for driving the unwinding shaft 21 to rotate to unwind the diaphragm. The unwinding shaft 21 can be of a one-for-one spare type and is rotatably connected to the mounting plate 1 through bearings.

[0037] The unwinding drive module 22 is arranged on the second side of the mounting plate 1 and includes an unwinding motor 221, a speed reducer 222, and a synchronous belt unit. The unwinding motor 221 is arranged on the speed reducer 222 and the output end of the unwinding motor 221 is connected to the input end of the speed reducer 222. The speed reducer 222 is arranged on a speed reducer base, and the speed reducer base is fixedly connected to the bearing through a support rod. The synchronous belt unit includes a driving wheel 223, a driven wheel 224, and a synchronous belt sleeved on the outer peripheries of the driving wheel 223 and the driven wheel 224. The driving wheel 223 is sleeved on the outer periphery of the output end of the speed reducer 222, and the driven wheel 224 is sleeved on the outer periphery of the unwinding shaft 21. The unwinding motor 221 drives the speed reducer 222 to rotate, the rotation of the speed reducer 222 drives the driving wheel 223 to rotate, the rotation of the driving wheel 223 drives the synchronous belt and the driven wheel 224 to rotate, and the rotation of the driven wheel 224 drives the unwinding shaft 21 to rotate.

[0038] In this embodiment, a coil diameter detection mechanism is further arranged on one side of the unwinding shaft 21. The coil diameter detection mechanism detects the diameter of the diaphragm cartridge so as to replace the diaphragm cartridge in time.

[0039] A tape detection unit 9 for the diaphragm tape after connecting is arranged at the rear end of the tape connecting platform 3, including a front tape detection unit for the diaphragm tape and a back tape detection unit for the diaphragm tape, which are respectively arranged on both sides of the conveying path of the diaphragm tape.

[0040] As Figure 5The tension mechanism 5 is arranged at the rear end of the adhesive tape detection unit 9 and cooperates with the tension detection unit 51 arranged at the front end of the tape connection platform 3, that is, the tension detection unit 51 detects the tension of the diaphragm material tape, and the tension mechanism 5 adjusts the tension of the diaphragm material tape according to the tension detection unit 51, including a tension control roller 52 and a tension driving member 53 for driving the tension control roller 52. The tension control roller 52 swings under the drive of the tension driving member 53 to change the tension of the diaphragm material tape wound around the tension control roller 52. The tension driving member 53 is a tension servo motor.

[0041] The tension control roller 52 includes a tension roller shaft 521 and a tension roller 522 rotatably connected to the tension roller shaft 521 via bearings at both ends. The tension servo motor is fixed on the second side of the mounting plate 1. The driving output end of the tension servo motor is transmission-connected with a tension drive shaft 523. The tension drive shaft 523 extends in the same direction as the tension roller shaft 521 and is rotationally connected to the mounting plate 1 via bearings. Both ends of the tension roller shaft 521 are transmission-connected to the tension drive shaft 523 via a connecting plate. A horizontal plate extending in the same direction is provided on the side of the tension drive shaft 523. One end of the horizontal plate is fixedly connected to the first side of the mounting plate 1. Both ends of the tension drive shaft 523 are rotationally connected to the horizontal plate via bearings. The horizontal plate plays a good supporting role for the tension drive shaft 523.

[0042] The iron removal mechanism 6 and the static removal mechanism 7 are sequentially arranged below the tension mechanism 5, and the iron removal mechanism 6 and the static removal mechanism 7 are arranged in pairs, and are respectively arranged on both sides of the diaphragm material belt conveying path, for removing iron and static electricity from the front and back sides of the diaphragm material belt. The static removal mechanism 7 uses a pulse AC ion rod, and the high-speed ion wind ejected by the ion nozzle eliminates static electricity on the surface of the diaphragm material belt.

[0043] The deflection correction mechanism 8 is arranged below the static electricity removal mechanism 7, and includes a deflection correction sensor 81 for detecting the edge position of the membrane material strip and a deflection correction driver 82 for driving the membrane material strip to move axially, so as to achieve the deflection correction purpose. The deflection correction driver 82 is a deflection correction servo motor.

[0044] The roller assembly 4 includes a plurality of transition rollers 40, which are arranged at intervals between the tape connection platform 3, the tape detection unit 9, the tension mechanism 5, the iron removal mechanism 6, and the static electricity removal mechanism 7 along the conveying path of the diaphragm material tape.

[0045] like Figure 6As shown in the figure, the transition roller 40 includes a roller shaft 401, a roller barrel 402, and a cross plate extending in the same direction as the roller shaft 401. The cross plate is fixedly connected to the mounting plate 1. Both ends of the roller shaft 401 are fixedly connected to the cross plate through connecting plates. Bearings are provided at both ends of the roller barrel 402, and the roller barrel 402 is rotatably sleeved on the outer periphery of the roller shaft 401 through the bearings. A gap is provided between the roller barrel 402 and the cross plate for the diaphragm strip to bypass.

[0046] Specifically, in this embodiment, the multiple groups of transition rollers 40 are respectively a first over-roller 41 and a second over-roller 42 disposed on both sides of the tape detection unit 9, and a third over-roller 43 and a fourth over-roller 44 disposed on both sides of the iron removal mechanism 6. The first over-roller 41 and the second over-roller 42 are horizontally offset, and the third over-roller 43 and the fourth over-roller 44 are vertically offset.

[0047] Furthermore, the second over-roller 42 and the third over-roller 43 are arranged at an upper and lower interval. The tension mechanism 5 is disposed at the rear of the second over-roller 42 and the third over-roller 43. The upper part of the tension roller 522 of the tension mechanism 5 is flush with the lower part of the roller barrel 402 of the second over-roller 42, and the lower part of the tension roller 522 is flush with the upper part of the roller barrel 402 of the third over-roller 43.

[0048] In actual application, after the diaphragm strip passes through the tape receiving platform 3, it first bypasses from above the roller barrel 402 of the first over-roller 41, then bypasses from below the roller barrel 402 of the second over-roller 42, and then enters from above the tension roller 522, exits from below and passes through above the roller barrel 402 of the third over-roller 43. The diaphragm strip is transported in a semi-circular loop on the tension roller 522. When the diaphragm strip is tightened or loosened, the tension servo motor 53 drives the tension drive shaft 523 to rotate and drives the tension roller shaft 521 to swing, so as to adjust the tension of the diaphragm strip. Then, the diaphragm strip bypasses the left side of the third over-roller 43, enters the right side of the fourth over-roller 44, and then enters the next path through the arc roller. By setting the first over-roller 41, the second over-roller 42, the third over-roller 43, and the fourth over-roller 44, when the diaphragm strip is processed in each process during the transportation process, the tension stability of the diaphragm strip is guaranteed, and the diaphragm strip has the necessary support and guidance in each process, so that the diaphragm strip can be smoothly transported along the predetermined path, ensuring the smoothness of the processing process. Moreover, the serpentine transportation path of the diaphragm strip also plays the role of storing the diaphragm strip.

[0049] In this embodiment, the upper diaphragm unwinding assembly and the lower diaphragm unwinding assembly can unwind simultaneously, and the unwinding processes are independent of each other and do not interfere with each other. The upper diaphragm and the lower diaphragm as the pole pieces are synchronously transported into the thermal compounding process.

[0050] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A diaphragm unwinding device, comprising a mounting plate (1) and an unwinding mechanism (2) arranged on a first side of the mounting plate (1), a tension mechanism (5) for detecting and adjusting the tension of the unwound diaphragm strip, and an iron removal mechanism (6) and an anti-static mechanism (7) arranged successively below the tension mechanism (5) for removing iron and static electricity from the diaphragm strip, characterized in that: It also includes a plurality of groups of transition rollers (40), which are arranged at intervals between the unwinding mechanism (2), the tension mechanism (5), the iron removal mechanism (6), and the static electricity removal mechanism (7) along the conveying path of the diaphragm material strip.

2. A diaphragm unwinding device according to claim 1, characterized in that: The unwinding mechanism (2) comprises two sets of unwinding shafts (21) for mounting the diaphragm material barrel, and a splicing platform (3) for splicing the diaphragm material strip and a tape detection unit (9) are sequentially arranged at the rear end of the unwinding shafts (21).

3. A diaphragm unwinding device according to claim 2, characterized in that: The plurality of transition roller groups (40) include a second transition roller (42), a third transition roller (43) and a fourth transition roller (44); the second transition roller (42) and the third transition roller (43) are arranged at intervals in the vertical direction, and the third transition roller (43) and the fourth transition roller (44) are arranged in a staggered manner in the vertical direction.

4. A diaphragm unwinding device according to claim 3, characterized in that: The tension mechanism (5) is arranged at the rear ends of the second over-roller (42) and the third over-roller (43), and the upper part of the tension roller (522) of the tension mechanism (5) is flush with the lower part of the over-roller roller (402) of the second over-roller (42), and the lower part of the tension roller (522) is flush with the upper part of the over-roller roller (402) of the third over-roller (43).

5. The membrane unwinding device according to claim 3, characterized in that: The plurality of transition roller groups (40) further include a first roller (41) disposed between the tape connection platform (3) and the tape detection unit (9), wherein the first roller (41) and the second roller (42) are disposed in a staggered manner in the horizontal direction.

6. A diaphragm unwinding device according to claim 1, characterized in that: A deviation correction mechanism (8) is also provided along the conveying path of the diaphragm material strip, comprising a deviation correction sensor (81) for detecting the edge position of the diaphragm material strip and a deviation correction driving member (82) for driving the diaphragm material strip to move axially.

7. A diaphragm unwinding device according to claim 1, characterized in that: The unwinding mechanism (2) comprises an unwinding shaft (21) for mounting a diaphragm barrel and an unwinding drive module (22) for driving the unwinding shaft (21) to rotate so as to unwind the diaphragm, the unwinding shaft (21) being rotatably connected to the mounting plate (1) via a bearing, the unwinding drive module (22) being arranged on the second side of the mounting plate (1), and the driving output end of the unwinding drive module (22) being transmission-connected to the unwinding shaft.

8. A diaphragm unwinding device according to claim 7, characterized in that: The unwinding drive module (22) comprises an unwinding motor (221), a speed reducer (222) and a synchronous belt unit, wherein the output end of the unwinding motor (221) is connected to the input end of the speed reducer (222); the driving wheel (223) of the synchronous belt unit is sleeved on the outer periphery of the output end of the speed reducer (222), and the driven wheel (224) of the synchronous belt unit is sleeved on the outer periphery of the unwinding shaft (21).

9. The membrane unwinding device according to claim 1, characterized in that: The tension mechanism (5) comprises a tension control roller (52) and a tension driving member (53) for driving the tension control roller (52); the tension control roller (52) swings under the drive of the tension driving member (53) to change the tension of the diaphragm material strip wound around the tension control roller (52).

10. A diaphragm unwinding device according to claim 9, characterized in that: The tension control roller (52) comprises a tension roller shaft (521) and a tension roller (522) whose two ends are rotatably connected to the tension roller shaft (521) via bearings; the driving output end of the tension driving member (53) is transmission-connected to the tension driving shaft (523); and the two ends of the tension roller shaft (521) are transmission-connected to the tension driving shaft (523) via connecting plates.

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