Feeding mechanism

Abstract

The feeding mechanism comprises a rolling assembly and a cutter assembly which are sequentially arranged in the pole piece conveying direction, a first piece supporting assembly is arranged between the rolling assembly and the cutter assembly, the rolling assembly comprises a driving roller and a driven roller which are oppositely arranged, the driving roller is driven to actively rotate to be used for conveying pole pieces, and the driven roller is driven to actively rotate to be used for conveying the pole pieces. And the driving roller and the driven roller can be driven to move relatively so as to clamp or release the pole piece. According to the feeding mechanism disclosed by the utility model, the roller feeding assembly is arranged at the upstream of the cutter assembly, and the pole piece is conveyed in a roller feeding manner, so that the traditional structure of inserting the pole piece by an inserting plate is avoided, the length of a suspended part of the pole piece is effectively shortened, and the quality of a battery cell is improved.

Description

Technical Field

[0001] The utility model belongs to the field of lithium battery automation equipment, and in particular relates to a feeding mechanism. Background Art

[0002] In the lithium battery manufacturing process, the electrode sheet feeding mechanism is a key part of the winding equipment. It is used to accurately and stably deliver the electrode sheet to the winding station to ensure the reliability of the battery cell quality. Traditional winding equipment usually uses a sheet feeding clamp to clamp the electrode sheet, pass it through the cutting mechanism, and then reach the pre-winding position for winding.

[0003] However, there are some problems with the traditional feeding method with a sheet feeding clamp. For example, after the electrode is cut off, the electrode head formed after the electrode is cut off loses support due to the fixed clamping position of the sheet feeding clamp, resulting in a large suspended part at the electrode head. This suspended state makes the electrode unstable during the feeding process, prone to shaking or offset, seriously affecting the quality of the battery cell. Utility Model Content

[0004] The utility model aims to provide a feeding mechanism capable of shortening the suspended part of the pole piece.

[0005] To achieve the above-mentioned purpose, the feeding mechanism of the utility model includes: a roller conveying assembly and a cutter assembly arranged in sequence along the pole piece conveying direction, a first plate assembly is arranged between the roller conveying assembly and the cutter assembly, the roller conveying assembly includes an active roller and a driven roller arranged relatively to each other, the active roller is driven to actively rotate for conveying the pole piece, and the active roller and the driven roller can be driven to move relative to each other to clamp or release the pole piece.

[0006] In one embodiment of the feeding mechanism of the utility model, the active roller is connected to a first driving member to drive the active roller to actively rotate, and the driven roller is connected to a second driving member to drive the driven roller to approach or move away from the active roller.

[0007] In one embodiment of the feeding mechanism of the utility model, the cutter assembly includes a limiting member and a first cutter which are relatively arranged, the first cutter is connected to a third driving member, and the third driving member drives the first cutter to approach or move away from the limiting member to cut off the pole piece.

[0008] In one embodiment of the feeding mechanism of the utility model, the cutter assembly includes a first cutter and a second cutter arranged opposite to each other, the blades of the first cutter and the second cutter are perpendicular to each other, the first cutter is connected to a third driving member, and the third driving member drives the first cutter to approach or move away from the second cutter to cut off the pole piece.

[0009] In one embodiment of the feeding mechanism of the utility model, the first support plate assembly has a feeding end and a discharging end, the feeding end faces the roller feeding assembly, and the discharging end faces the cutting knife assembly, the first support plate assembly includes a first guide plate and a second guide plate, and the distance between the first guide plate and the second guide plate at the feeding end along the direction of the electrode thickness is greater than the distance between the first guide plate and the second guide plate at the discharging end along the direction of the electrode thickness.

[0010] In one embodiment of the feeding mechanism of the utility model, the active roller is rotatably mounted on a first mounting seat, the driven roller is rotatably mounted on a second mounting seat, the second mounting seat is connected to a second driving member, the first guide plate is mounted on the first mounting seat, and the second guide plate is mounted on the second mounting seat.

[0011] In one embodiment of the feeding mechanism of the utility model, the active roller is rotatably mounted on a first mounting seat, the driven roller is rotatably mounted on a second mounting seat, the second mounting seat is connected to a second driving member, and the first guide plate and the second guide plate are both mounted on the first mounting seat.

[0012] In one embodiment of the feeding mechanism of the utility model, the roller feeding assembly, the first support plate assembly, and the cutter assembly are all installed on a mounting plate, and the mounting plate is connected to a fourth driving member, and the fourth driving member drives the roller feeding assembly, the first support plate assembly, and the cutter assembly to move synchronously along the pole piece transmission direction toward or away from a pre-rolling position.

[0013] In one embodiment of the feeding mechanism of the present invention, it further comprises a second support plate assembly, wherein the second support plate assembly is mounted on the mounting plate and is located downstream of the cutter assembly.

[0014] In one embodiment of the feeding mechanism of the utility model, it also includes a second support plate assembly, and the second support plate assembly is installed at the pre-rolling position.

[0015] In summary, the feeding mechanism of the utility model arranges a roller conveying assembly upstream of the cutter assembly to convey the electrode piece by roller conveying, thereby avoiding the structure of the traditional plug-in plate and the electrode piece, effectively shortening the length of the suspended portion of the electrode piece and improving the quality of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of an embodiment of the feeding mechanism of the utility model;

[0017] Figure 2 This is a structural diagram of an embodiment of the feeding mechanism of the utility model applied to a battery manufacturing device;

[0018] In the figure: 10, mounting plate; 20, roller conveying assembly; 21, driving roller; 22, driven roller;

[0019] 30. First support plate assembly; 31. Feeding end; 32. Discharging end; 33. First guide plate; 34. Second guide plate;

[0020] 40. Cutter assembly; 41. First cutter; 42. Second cutter;

[0021] 50. First driving member; 60. Second driving member; 70. Third driving member; 80. Fourth driving member; 90. Second support plate assembly; 100. Pole piece; 110. Cathode pole piece; 120. Anode pole piece; 200. Pre-rolling position. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0023] like Figure 1 As shown, the feeding mechanism is used to convey the pole piece 100, including a roller conveying assembly 20, a first support sheet assembly 30 and a cutter assembly 40 arranged in sequence along the conveying direction of the pole piece 100. The roller conveying assembly 20 includes an active roller 21 and a driven roller 22. The active roller 21 can be driven to rotate actively, and the active roller 21 and the driven roller 22 can be driven to move toward or away from each other to clamp or release the pole piece 100. The active roller 21 and the driven roller 22 clamp the pole piece 100, and the active roller 21 actively rotates to act on the pole piece 100, and conveys the pole piece 100 toward the first support sheet assembly 30 and the cutter assembly 40 in sequence. The roller conveying assembly 20 is arranged upstream of the cutter assembly 40, and the roller conveying assembly 20 conveys the pole piece 100 in a roller conveying manner, avoiding the structure of the traditional plug-in board plug-in, effectively shortening the length of the suspended part of the pole piece 100, and improving the quality of the battery cell.

[0024] A first support sheet assembly 30 is arranged between the roller conveying assembly 20 and the cutter assembly 40. The first support sheet assembly 30 can guide the pole piece 100 conveyed by the roller conveying assembly 20 toward the cutter assembly 40 to prevent the hanging part of the pole piece 100 from shaking. Without affecting the operation of the roller conveying assembly 20 and the cutter assembly 40, the length of the first support sheet assembly 30 along the conveying direction of the pole piece 100 is made as short as possible to reduce the distance between the roller conveying assembly 20 and the cutter assembly 40 and shorten the hanging part of the pole piece 100.

[0025] The active roller 21 is connected to a first driving member 50, which is preferably a rotary motor, and its driving end is connected to the active roller 21 to drive the active roller 21 to rotate actively. The driven roller 22 is connected to a second driving member 60, which is preferably a cylinder to drive the driven roller 22 to approach or move away from the active roller 21.

[0026] In other embodiments, the driven roller 22 can be set to be stationary, and the active roller 21 can be driven to approach the driven roller 22; it can also be set that both the active roller 21 and the driven roller 22 can be driven to move relative to each other.

[0027] The first support plate assembly 30 has a feed end 31 and a discharge end 32, the feed end 31 faces the roller assembly 20, and the discharge end 32 faces the cutter assembly 40. After being conveyed from the roller assembly 20, the pole piece 100 directly enters the feed end 31 of the first support plate assembly 30, and directly enters the cutter assembly 40 after passing through the first support plate assembly 30. The first support plate assembly 30 includes a first guide plate 33 and a second guide plate 34, which are respectively located on both sides of the pole piece 100. The distance between the first guide plate 33 and the second guide plate 34 at the feed end 31 along the thickness direction of the pole piece 100 is greater than the distance between the first guide plate 33 and the second guide plate 34 at the discharge end 32 along the thickness direction of the pole piece 100. The first guide plate 33 and the second guide plate 34 form a flared opening in the direction of the feed end 31 to facilitate the pole piece 100 to penetrate between the first guide plate 33 and the second guide plate 34.

[0028] Specifically, the plate surfaces of the first guide plate 33 and the second guide plate 34 can be inclined toward the electrode 100 along the conveying direction of the electrode 100; in other embodiments, the first guide plate 33 and the second guide plate 34 are parallel to the conveying direction of the electrode, and the feeding ends 31 of the first guide plate 33 and the second guide plate 34 can be folded outward in a direction away from the electrode 100.

[0029] The active roller 21 is rotatably mounted on the first mounting seat, the driven roller 22 is rotatably mounted on the second mounting seat, the second mounting seat is slidably connected to the first mounting seat, the second driving member 60 is mounted on the first mounting seat, the driving end of the second driving member 60 is connected to the second mounting seat, and the driven roller 22 is driven to approach or move away from the active roller 21. The first guide plate 33 is mounted on the first mounting seat, and the second guide plate 34 is mounted on the second mounting seat, so that the second guide plate 34 can also move with the movement of the second mounting seat, thereby changing the distance between the first guide plate 33 and the second guide plate 34.

[0030] In other embodiments, both the first guide plate 33 and the second guide plate 34 may be mounted on the first mounting seat, and the distance between the first guide plate 33 and the second guide plate 34 is not adjustable and does not affect the transmission of the pole piece 100 .

[0031] The cutter assembly 40 includes a first cutter 41 and a second cutter 42 arranged opposite to each other, the blades of the first cutter 41 and the second cutter 42 are perpendicular to each other, the second cutter 42 is parallel to the conveying direction of the pole piece 100, and the second cutter 42 approaches the pole piece 100 before the first cutter 41. The first cutter 41 is connected to a third driving member 70, and the third driving member 70 is preferably a cylinder, which drives the first cutter 41 to approach or move away from the second cutter 42 to cut the pole piece 100. The third driving member 70 can also be set to a cam and cam groove structure, which is more common in the prior art and will not be described in detail.

[0032] In other embodiments, the second cutter 42 can also be configured as a limit member, which is in the shape of a plate with a cutter avoidance groove on its surface, which is used to support the pole piece 100 and accommodate the first cutter 41 when the first cutter 41 cuts off the pole piece 100.

[0033] The roller conveying assembly 20, the first supporting piece assembly 30, and the cutter assembly 40 are all mounted on a mounting plate 10, and the mounting plate 10 is connected to a fourth driving member 80, which is preferably a motor screw assembly. The fourth driving member 80 drives the roller conveying assembly 20, the first supporting piece assembly 30, and the cutter assembly 40 to synchronously move toward or away from a pre-rolling position 200 along the transmission direction of the pole piece 100 through the mounting plate 10. The pre-rolling position 200 also has an active roller and a driven roller 22, which can receive the pole piece 100 from the feeding mechanism and actively transmit the pole piece 100.

[0034] The roller conveying assembly 20, the first support plate assembly 30, and the cutter assembly 40 are installed on the same side surface of the mounting plate 10. The other side surface of the mounting plate 10 is slidably connected to the equipment plate through a slide rail. The fourth driving member 80 is installed on the equipment plate. The driving end of the fourth driving member 80 is connected to the other side surface of the mounting plate 10. The driving direction of the fourth driving member 80 and the extension direction of the slide rail are parallel to the transmission direction of the pole piece 100.

[0035] The feeding mechanism also includes a second support sheet assembly 90, which is mounted on the mounting plate 10 and located downstream of the cutter assembly 40. The second support sheet assembly 90 has a similar structure to the first support sheet assembly 30, and will not be described in detail. The second support sheet assembly 90 is arranged between the pre-rolling position 200 and the cutter assembly 40. After the pole piece 100 is cut off, the tail of the pole piece 100 connected to the pre-rolling position 200 is prevented from shaking, thereby improving the quality of the battery cell.

[0036] Similarly, without affecting the operation of the pre-rolling position 200 and the cutter assembly 40, the distance of the second support plate assembly 90 along the transmission direction of the pole piece 100 is shortened as much as possible to reduce the distance between the cutter assembly 40 and the pre-rolling position 200 and shorten the suspended portion of the pole piece 100.

[0037] In other embodiments, the second flap assembly 90 may also be installed at the pre-rolling position 200 .

[0038] The working process of the feeding mechanism provided by the embodiment of the utility model is as follows:

[0039] The second driving member 60 drives the driven roller 22 to approach the active roller 21, and the driven roller 22 and the active roller 21 clamp the pole piece 100. The fourth driving member 80 drives the mounting plate to move along the conveying direction of the pole piece 100 until the second support plate assembly 90 reaches the pre-rolling position 200. The first driving member 50 drives the active roller 21 to actively rotate and drive the driven roller 22 to move relative to each other, and rolls the pole piece 100 to the pre-rolling position 200. After the active roller and the driven roller of the pre-rolling position 200 clamp the pole piece 100, the second driving member 60 drives the driven roller 22 away from the active roller 21, and the driven roller 22 and the active roller 21 release the pole piece 100. After the pre-rolling position 200 conveys the pole piece 100 to the winding needle and winds it to a certain degree to form a battery cell, the third driving member 70 drives the first cutter 41 to move and cut off the pole piece 100.

[0040] like Figure 2 As shown, in the battery manufacturing equipment, two feeding mechanisms are included, which are used for conveying the cathode electrode sheet 110 and the anode electrode sheet 120 respectively.

[0041] The above embodiments are only preferred embodiments for fully illustrating the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or changes made by technicians in this technical field on the basis of the present utility model are all within the protection scope of the present utility model. The protection scope of the present utility model shall be subject to the claims.

Claims

1. A feeding mechanism, characterized in that: include: A roller conveying assembly and a cutter assembly are sequentially arranged along the pole piece conveying direction, a first pole piece assembly is arranged between the roller conveying assembly and the cutter assembly, the roller conveying assembly comprises an active roller and a driven roller arranged relatively to each other, the active roller is driven to actively rotate for conveying the pole piece, and the active roller and the driven roller can be driven to move relative to each other to clamp or release the pole piece.

2. The feeding mechanism according to claim 1, characterized in that: The active roller is connected to a first driving member to drive the active roller to actively rotate, and the driven roller is connected to a second driving member to drive the driven roller to approach or move away from the active roller.

3. The feeding mechanism according to claim 1, characterized in that: The cutter assembly comprises a limiting member and a first cutter which are arranged opposite to each other. The first cutter is connected to a third driving member. The third driving member drives the first cutter to approach or move away from the limiting member to cut off the pole piece.

4. The feeding mechanism according to claim 1, characterized in that: The cutter assembly comprises a first cutter and a second cutter arranged opposite to each other, wherein the blades of the first cutter and the second cutter are perpendicular to each other, and the first cutter is connected to a third driving member, and the third driving member drives the first cutter to approach or move away from the second cutter to cut off the pole piece.

5. The feeding mechanism according to claim 1, characterized in that: The first support plate assembly has a feed end and a discharge end, the feed end faces the roller assembly, and the discharge end faces the cutter assembly. The first support plate assembly includes a first guide plate and a second guide plate. The distance between the first guide plate and the second guide plate at the feed end along the direction of the electrode thickness is greater than the distance between the first guide plate and the second guide plate at the discharge end along the direction of the electrode thickness.

6. The feeding mechanism according to claim 5, characterized in that: The active roller is rotatably mounted on a first mounting seat, the driven roller is rotatably mounted on a second mounting seat, the second mounting seat is connected to a second driving member, the first guide plate is mounted on the first mounting seat, and the second guide plate is mounted on the second mounting seat.

7. The feeding mechanism according to claim 5, characterized in that: The active roller is rotatably mounted on a first mounting seat, the driven roller is rotatably mounted on a second mounting seat, the second mounting seat is connected to a second driving member, and the first guide plate and the second guide plate are both mounted on the first mounting seat.

8. The feeding mechanism according to claim 1, characterized in that: The roller conveying assembly, the first support sheet assembly, and the cutter assembly are all mounted on a mounting plate, and the mounting plate is connected to a fourth driving member, and the fourth driving member drives the roller conveying assembly, the first support sheet assembly, and the cutter assembly to move synchronously along the pole piece conveying direction toward or away from a pre-rolling position.

9. The feeding mechanism according to claim 8, characterized in that: Also included is a second vane assembly mounted on the mounting plate and located downstream of the cutter assembly.

10. The feeding mechanism according to claim 8, characterized in that: It also includes a second arm assembly, which is installed in the pre-rolling position.

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