CN215903602U - Pole piece cutting device - Google Patents

Abstract

The utility model discloses a pole piece cutting device. The pole piece cutting device comprises a cutting driving mechanism and a cutting mechanism, wherein the cutting driving mechanism adopts a servo motor as a power source, takes a crankshaft and a cam follower as transmission parts, and can drive the cutting mechanism to cut pole pieces in a transmission manner, so that the reciprocating cutting action of a large-size cutter is driven; the locking assembly comprising the locking cylinder and the safety pin can realize locking in a shutdown state, so that the protection safety is high; and the cutter adopts linear guide to carry out cutting movement guide, and the cutter is more suitable for cutting large-size pole pieces while ensuring high cutting precision, and has wide application range. And the discharge side and the feed side of the cutting mechanism are respectively provided with a pressing plate pressing assembly and a rolling fixing assembly, so that the pole pieces in the cutting process can be effectively pressed and fixed, the phenomenon of upwarping of the pole pieces in the cutting process, particularly large-size pole pieces, is avoided, and the cutting quality is ensured.

Description

Pole piece cutting device

Technical Field

The utility model relates to the technical field of lithium ion battery pole piece cutting equipment, in particular to a pole piece cutting device.

Background

The electrode plate cutting lithium ion battery production process has the advantages that the essential technological process is adopted, and the electrode plate cutting enables a large-size electrode plate to be formed into a small electrode plate with a proper size, so that the production requirement is met.

At present, in a conventional pole piece cutting device, such as the lithium battery pole piece cutting device disclosed in patent 2017215366166, the up-down movement, folding and cutting actions of a cutter are mainly directly driven by a driving part to move, and the cutter performs directional sliding based on a guide post, wherein, in order to ensure the directional precision, the spacing of the guide post is limited, so that the cutter cannot adapt to the function of a large-size lithium ion battery pole piece, only can cut a small pole piece, and has a small application range; meanwhile, the existing pole piece cutting device is lack of a corresponding pressing station at the feeding and discharging sides of the cutting station, so that the pole piece cannot be pressed close to the cutting position of the pole piece in the cutting process, the phenomena of tilting and the like easily occur in the cutting process, the cutting precision is reduced, the quality of the pole piece is influenced, the production efficiency is reduced, and the production resources are wasted.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pole piece cutting device suitable for efficiently cutting a large-size lithium battery pole piece, and aims to solve the problems that the existing pole piece cutting equipment is low in cutting applicability and poor in cutting precision to the large-size lithium battery pole piece and the pole piece is prone to tilting.

The purpose of the utility model is realized by the following technical scheme.

A pole piece cutting device comprises a cutting driving mechanism and a cutting mechanism;

the cutting driving mechanism comprises a cutting driving piece and a connecting plate; the output end of the cutting driving piece is connected with the connecting plate through a crankshaft and a cam follower and can drive the connecting plate to reciprocate up and down;

the cutting mechanism comprises an upper cutter and a lower cutter; the upper cutter is in transmission connection with the connecting plate and can synchronously reciprocate up and down along with the connecting plate; the upper cutter moves downwards to be matched with the lower cutter to cut the pole piece.

In a preferred embodiment, the cutting driving piece is connected with the crankshaft through a speed reducer and a coupling.

Further, the cutting driving piece is a servo motor.

In a preferred embodiment, the top of the upper cutter is connected with a U-shaped connecting block; a cam bearing is arranged on the connecting plate; the cam bearing is assembled in a U-shaped groove of the U-shaped connecting block, and the cam bearing can drive the U-shaped connecting block and the upper cutter to synchronously reciprocate up and down along with the connecting plate in the process of reciprocating up and down.

In a preferred embodiment, an upper pressure plate is connected below the discharge side of the upper cutter, a lower supporting plate is arranged on the outer side of the lower cutter, and the upper pressure plate corresponds to the lower supporting plate.

In a more preferable embodiment, the upper pressing plate is movably arranged on the upper cutter up and down through a guide post, a first spring is sleeved outside the guide post, and two ends of the first spring are respectively in action connection with the upper pressing plate and the upper cutter.

In a preferred embodiment, two ends of the upper cutter are arranged on a linear guide rail in the vertical direction in a sliding manner; when the upper cutter moves up and down along with the connecting plate synchronously in a reciprocating mode, two ends of the upper cutter slide up and down along the linear guide rail.

In a more preferable embodiment, the upper cutter and the lower cutter are both disposed on a cutter mounting bracket, the upper cutter is fixedly disposed at the bottom of the cutter mounting bracket, the linear guide rails are disposed on two sides of the cutter mounting bracket, and two ends of the upper cutter are slidably disposed on the linear guide rails.

Further, handles are arranged on the left side and the right side of the cutter mounting frame, and the upper cutter and the lower cutter are convenient to disassemble and assemble.

In a preferred embodiment, a dust suction box is arranged at the bottom of the lower cutter and is matched with a negative pressure fan for dust removal.

In a preferred embodiment, the cutting driving mechanism is provided with a locking cylinder and a safety pin, and the safety pin is connected to the output end of the locking cylinder;

the connecting plate is provided with a locking hole; and when the connecting plate moves upwards to a proper position, the safety pin corresponds to the locking hole and can extend into the locking hole under the driving of the locking cylinder to lock the downward movement of the connecting plate.

In a preferred embodiment, in the pole piece cutting device described in any one of the above, a rolling fixing assembly is arranged on the feed side of the cutting mechanism, and the rolling fixing assembly includes a pressing roller; the rolling fixing component is connected with the connecting plate and can synchronously reciprocate up and down along with the connecting plate, and when the rolling fixing component moves downwards along with the connecting plate in place, a pressing roller on the rolling fixing component can tightly press and fix the pole piece on the feeding side of the cutting mechanism.

In a more preferred embodiment, the rolling fixing assembly further comprises a fine adjustment cylinder and a press roller mounting seat; the fine tuning cylinder is fixedly connected with the connecting plate, the press roller mounting seat is connected with the output end of the fine tuning cylinder and can be driven by the fine tuning cylinder to move up and down, and the press roller is mounted on the press roller mounting seat.

In a further preferred embodiment, the compression roller mounting seat comprises an upper mounting seat and a lower mounting seat, the upper mounting seat is connected with the output end of the fine adjustment cylinder through a floating joint, the lower mounting seat is arranged on the upper mounting seat in a manner of moving up and down through a guide shaft, the compression roller is arranged on the lower mounting seat, a second spring is sleeved outside the guide shaft, and two ends of the second spring are respectively connected with the upper mounting seat and the lower mounting seat in a manner of acting.

Further, a rolling mounting bracket is arranged on the feeding side of the cutting mechanism; the roll-in mounting bracket is provided with a slide rail moving up and down, the press roll mounting seat is arranged on the slide rail in a vertically sliding manner and can move up and down along the slide rail under the driving of the fine adjustment cylinder.

In a further preferable embodiment, an air blowing plate is arranged on the compression roller mounting seat and located on the outer side of the compression roller, and an air opening of the air blowing plate faces the cutting position of the cutting mechanism.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

the pole piece cutting device adopts the servo motor as a power source, takes the crankshaft and the cam follower as transmission parts, can realize the driving of the reciprocating cutting action of the large-size cutter, is provided with the locking assembly comprising the locking cylinder and the safety pin, can realize the locking in a shutdown state, and has high protection safety; and the cutter adopts the linear guide rail to cut, moves and guides, and is more suitable for cutting large-size pole pieces while ensuring high cutting precision. Therefore, the high-precision cutting of the large-size lithium ion battery pole piece can be realized with high safety, and the application range is wide.

In addition, a pressing plate pressing assembly and a rolling fixing assembly are respectively arranged on the discharging side and the feeding side of the cutting mechanism, so that the pole pieces in the cutting process can be effectively pressed and fixed, the phenomenon of upwarping of the pole pieces in the cutting process is avoided, particularly large-size pole pieces, and the cutting quality is ensured. And, all be provided with the spring on clamp plate compresses tightly subassembly and roll-in fixed subassembly and regard as the bolster, can cushion the hard pressure to the pole piece, reduce the damage to the pole piece in-process that compresses tightly, further effectively guarantee the quality of pole piece.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a pole piece cutting apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of the cutting driving mechanism;

FIG. 3 is a schematic structural view of a cutting mechanism;

FIG. 4 is a schematic structural view of a roll fixing assembly;

the attached drawings are marked as follows: 1-cutting driving mechanism, 10-base, 11-cutting driving piece, 12-connecting plate, 13-speed reducer, 14-coupler, 15-crankshaft, 16-cam follower, 17-cam bearing, 18-locking cylinder, 19-safety pin, 2-cutting mechanism, 20-cutter mounting rack, 21-upper cutter, 22-lower cutter, 23-linear guide rail, 24-handle, 25-U-shaped connecting block, 26-upper pressing plate, 27-lower supporting plate, 28-guide pillar, 29-first spring, 3-rolling fixing component, 30-rolling mounting rack, 31-pressing roller, 32-pressing roller mounting seat, 321-upper mounting seat, 322-lower mounting seat, 33-fine adjustment cylinder, 34-floating joint, 35-slide rail, 36-guide shaft, 37-second spring and 4-blowing plate.

Detailed Description

The technical solutions of the present invention are further described in detail below with reference to specific examples and drawings, but the scope and implementation of the present invention are not limited thereto.

In the description of the specific embodiments, it should be noted that the terms "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships where products of the utility model are usually placed when the products of the utility model are used, and the terms "first", "second", and the like are used for convenience of distinction and are only used for convenience of description and simplification of description, but do not indicate or imply that structures or elements to be referred must have specific orientations, be constructed in specific orientations, and be operated, and therefore, are not to be construed as limiting the utility model, and are not to indicate or imply relative importance.

Unless expressly stated or limited otherwise, the terms "mounted," "disposed," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Please refer to fig. 1, the pole piece cutting device of the present invention includes a cutting driving mechanism 1 and a cutting mechanism 2. As a power source and a transmission structure for cutting the pole piece, the cutting driving mechanism 1 can drive the cutting mechanism 2 to cut the pole piece.

Referring to fig. 2, the cutting driving mechanism 1 includes a cutting driving member 11 and a connecting plate 12. The cutting driving part 11 is fixedly installed on the base 10, and the output end of the cutting driving part 11 is connected with the connecting plate 12 through a crankshaft 15 and a cam follower 16 and can drive the connecting plate 12 to reciprocate up and down; specifically, the cutting driving member 11 is connected to the crankshaft 15 through a speed reducer 13 and a coupling 14. And optionally, the cutting driving member 11 is a servo motor. When the cutting drive 11 is started in this way, the cam follower 16 is driven to swing by the rotation of the speed reducer 13, the coupling 14, and the crankshaft 15, and the connecting plate 12 is driven to reciprocate up and down.

The cutting mechanism 2 comprises an upper cutter 21 and a lower cutter 22, the upper cutter 21 and the lower cutter 22 can respectively move downwards and upwards to be folded, and pole piece cutting is carried out during folding. Referring to fig. 3, in the embodiment shown in detail, the upper cutter 21 is in transmission connection with the connecting plate 12 and can synchronously reciprocate up and down with the connecting plate 12; the lower cutter 22 is fixedly arranged, and the upper cutter 21 moves downwards to be matched with the lower cutter 22 to cut the pole piece.

In a preferred embodiment, the upper cutter 21 and the lower cutter 22 are both disposed on the cutter mounting bracket 20, the upper cutter 21 is fixedly disposed at the bottom of the cutter mounting bracket 20, the linear guide rails 26 are disposed on two sides of the cutter mounting bracket 20, and two ends of the upper cutter 21 are slidably disposed on the linear guide rails 23. Both ends of the upper cutter 21 are slidably arranged on the linear guide rails 23 in the vertical direction; when the upper cutter 21 reciprocates up and down synchronously with the connecting plate 12, both ends of the upper cutter 21 slide up and down along the linear guide rail 23. Therefore, the upper cutter 21 and the lower cutter 22 can be large-sized cutters while high cutting accuracy is guaranteed, high-accuracy cutting of large-sized lithium ion battery pole pieces can be achieved, and the application range is wide. Further, handles 24 are mounted on the left side and the right side of the cutter mounting frame 20, so that the upper cutter 21 and the lower cutter 22 can be conveniently disassembled and assembled.

And, the bottom of the lower cutter 21 is provided with a dust absorption box, the dust absorption box is externally connected with a negative pressure fan, an air inlet of the dust absorption box corresponds to the cutting position, and after the upper cutter 21 and the lower cutter 22 are cut, the generated dust can be absorbed by the dust absorption box in cooperation with the negative pressure fan.

Referring to fig. 3 again, in another preferred embodiment, the connecting plate 12 drives the upper cutter 21 to reciprocate up and down through transmission to drive the cutting mechanism 2 to cut the pole piece. Specifically, the top of the upper cutter 21 is connected with a U-shaped connecting block 25; a cam bearing 17 is arranged on the connecting plate 12, and the cam bearing 17 is assembled in a U-shaped groove of the U-shaped connecting block 25; in this way, during the up-and-down movement of the connecting plate 12 due to the swing of the cam follower 16, the cam bearing 17 will move up and down reciprocally with the connecting plate 12, and during the up-and-down reciprocal movement of the cam bearing 17, the cam bearing will directly drive the U-shaped connecting block 25 to move up and down, and further drive the upper cutter 21 connected to the U-shaped connecting block 25 to move up and down reciprocally synchronously, so as to complete the cutting action.

Further, referring to fig. 1 and fig. 2 again, the cutting driving mechanism 1 is provided with a locking assembly including a locking cylinder 18 and a safety pin 19. The locking cylinder 18 is fixedly arranged on the base 10, and the safety pin 19 is connected to the output end of the locking cylinder 18; a locking hole is arranged on the connecting plate 12; and when the connecting plate 12 moves upwards to a proper position, the safety pin 19 corresponds to the locking hole and can extend into the locking hole under the driving of the locking cylinder 18 to lock the downward movement of the connecting plate 12.

Therefore, under the shutdown state of the cutting device, the cutting driving part 11 drives the connecting plate 12 to drive the upper cutter 21 to ascend to the initial position, the locking cylinder 18 can drive the safety pin 19 to be inserted into the locking hole of the connecting plate 12 at the moment, the connecting plate 12 is locked, the upper cutter 21 is prevented from falling down, the safety is improved, and meanwhile, the device is convenient to clean.

In another preferred embodiment, referring to fig. 3 again, an upper pressing plate 26 is connected below the discharging side of the upper cutter 21, a lower supporting plate 27 is arranged outside the lower cutter 21, and the upper pressing plate 26 corresponds to the lower supporting plate 27. In the process of the up-down reciprocating movement of the upper cutter 21, the upper pressure plate 26 synchronously performs the up-down reciprocating movement along with the upper cutter 21 and is pressed with the lower support plate 27 when moving downwards to the right position, so that the pole pieces which are tiled on the lower support plate 27 at the discharging side are pressed and fixed.

In the specific preferred embodiment shown in fig. 3, the upper pressing plate 26 is disposed on the upper cutter 21 movably up and down by a guide post 28, and a first spring 29 is sleeved outside the guide post 28, wherein both ends of the first spring 29 are operatively connected to the upper pressing plate 26 and the upper cutter 21, respectively. Alternatively, both ends of the first spring 29 are fixedly connected to the upper pressing plate 26 and the upper cutter 21, respectively. So, pan feeding earlier when the pole piece cuts tile on bottom plate 27, when top board 26 moved down and carried out the pressfitting to the pole piece, first spring 29 can make top board 26 cushion when contacting the pole piece to prevent that the pole piece from receiving the direct hard pressfitting of top board 26 and impaired, effectively guarantee the quality of pole piece.

In addition, referring to fig. 1 again, a rolling fixing component 3 is disposed on the feeding side of the cutting mechanism 2, and the rolling fixing component 3 is provided with a pressing roller 31. The rolling fixing component 3 is connected with the connecting plate 12 and can synchronously reciprocate up and down along with the connecting plate 12. When cutting the operation, roll-in fixed subassembly 3 can follow connecting plate 12 and carry out downstream in step roll-in fixed subassembly 3 follows connecting plate 12 when the downstream targets in place, the last compression roller 31 of roll-in fixed subassembly 3 can be right the pole piece of cutting mechanism 2's the feed side compresses tightly fixedly to the pole piece is avoided appearing cutting the in-process and is appeared the perk phenomenon, especially jumbo size pole piece, especially the pole piece of length size more than 300mm, like 600mm, 800mm long-size pole piece, thereby guarantees the quality of cutting.

In a preferred embodiment, as shown in fig. 4, the rolling fixing assembly 3 further includes a fine adjustment cylinder 33 and a rolling roller mounting seat 32, so as to achieve fine adjustment of the pressing down of the rolling roller 31. The fine adjustment cylinder 33 is fixedly connected with the connecting plate 12, the press roller mounting seat 32 is connected with an output end of the fine adjustment cylinder 33 and can be driven by the fine adjustment cylinder 33 to move up and down, and the press roller 31 is mounted on the press roller mounting seat 32. Specifically, optionally, a rolling mounting support 30 is arranged on the feeding side of the cutting mechanism 2, a slide rail 35 moving up and down is arranged on the rolling mounting support 30, and the pressing roller mounting seat 32 is arranged on the slide rail 35 in a vertically slidable manner and can move up and down along the slide rail 35 under the driving of the fine adjustment cylinder 33.

Therefore, the rolling fixing component 3 synchronously moves downwards along with the connecting plate 12 to compress and fix the pole piece on the feeding side. When the pressing roller 31 of the rolling fixing component 3 is pressed down insufficiently or pressed down too much, the fine adjustment cylinder 33 drives the pressing roller mounting seat 32 to perform fine adjustment descending or ascending, so that the pressing displacement of the pressing roller 31 reaches the optimal state, and the pole piece is effectively pressed and fixed and is not damaged.

Further, in a particularly preferred embodiment shown in fig. 4, the platen roller mounting seat 32 specifically includes an upper mounting seat 321 and a lower mounting seat 322, and the upper mounting seat 321 is connected with the output end of the fine adjustment cylinder 33 through a floating joint 34, while the lower mounting seat 322 is movably arranged on the upper mounting seat 321 by a guide shaft 36, and the platen roller 31 is mounted on the lower mounting seat 322; moreover, a second spring 37 is sleeved outside the guide shaft 36, two ends of the second spring 37 are respectively in action connection with the upper mounting seat 321 and the lower mounting seat 322, and two ends of the second spring 37 can be specifically selected to be respectively in fixed connection with the upper mounting seat 321 and the lower mounting seat 322.

So, when roll-in fixed subassembly 3 moved down along with connecting plate 12 is synchronous to press the fastening to the pole piece regularly, second spring 37 can make the compression roller 31 of installation on mount pad 322 down cushion when contacting the pole piece to prevent that the pole piece from receiving the direct hard power pressfitting of compression roller 31 and impaired, reduce the damage to the pole piece compresses tightly the in-process, further effectively guarantee the quality of pole piece.

In addition, referring to fig. 4 again, an air blowing plate 4 is disposed on the platen roller mounting seat 32 and located outside the platen roller 31, and an air opening of the air blowing plate 4 faces the cutting position of the cutting mechanism 2 and specifically corresponds to an air inlet of the dust suction box. When the pole piece is cut, the generated dust can be blown into the dust collection box through the air blowing plate 4, and the dust collection efficiency is improved.

The above embodiments are merely preferred embodiments of the present invention, and the technical solutions of the present invention are described in further detail, but the above descriptions are exemplary, not exhaustive, and are not limited to the disclosed embodiments, the scope and implementation of the present invention are not limited thereto, and any changes, combinations, deletions, substitutions or modifications that do not depart from the spirit and principle of the present invention are included in the scope of the present invention.

Claims (10)

1. A pole piece cutting device is characterized by comprising a cutting driving mechanism and a cutting mechanism;

the cutting driving mechanism comprises a cutting driving piece and a connecting plate; the output end of the cutting driving piece is connected with the connecting plate through a crankshaft and a cam follower and can drive the connecting plate to reciprocate up and down;

the cutting mechanism comprises an upper cutter and a lower cutter; the upper cutter is in transmission connection with the connecting plate and can synchronously reciprocate up and down along with the connecting plate; the upper cutter moves downwards to be matched with the lower cutter to cut the pole piece.

2. The pole piece cutting device as claimed in claim 1, wherein a U-shaped connecting block is connected to the top of the upper cutter; a cam bearing is arranged on the connecting plate; the cam bearing is assembled in a U-shaped groove of the U-shaped connecting block, and the cam bearing can drive the U-shaped connecting block and the upper cutter to synchronously reciprocate up and down along with the connecting plate in the process of reciprocating up and down.

3. The pole piece cutting device as claimed in claim 1, wherein an upper pressing plate is connected below the discharge side of the upper cutter, a lower supporting plate is arranged outside the lower cutter, and the upper pressing plate corresponds to the lower supporting plate.

4. The pole piece cutting device as claimed in claim 3, wherein the upper pressing plate is movably disposed on the upper cutter up and down by a guide post, and a first spring is sleeved on the guide post, and two ends of the first spring are operatively connected to the upper pressing plate and the upper cutter respectively.

5. The pole piece cutting device as claimed in claim 1, wherein both ends of the upper cutter are slidably disposed on a linear guide rail which runs up and down; when the upper cutter moves up and down along with the connecting plate synchronously in a reciprocating mode, two ends of the upper cutter slide up and down along the linear guide rail.

6. The pole piece cutting device as claimed in claim 1, wherein the cutting driving mechanism is provided with a locking cylinder and a safety pin, and the safety pin is connected to an output end of the locking cylinder;

the connecting plate is provided with a locking hole; and when the connecting plate moves upwards to a proper position, the safety pin corresponds to the locking hole and can extend into the locking hole under the driving of the locking cylinder to lock the downward movement of the connecting plate.

7. The pole piece cutting device according to any one of claims 1 to 6, wherein a rolling fixing component is arranged on the feeding side of the cutting mechanism, and the rolling fixing component comprises a pressing roller; the rolling fixing component is connected with the connecting plate and can synchronously reciprocate up and down along with the connecting plate, and when the rolling fixing component moves downwards along with the connecting plate in place, a pressing roller on the rolling fixing component can tightly press and fix the pole piece on the feeding side of the cutting mechanism.

8. The pole piece cropping device of claim 7, wherein said roll-fixing assembly further comprises a trimming cylinder and a roll mount; the fine tuning cylinder is fixedly connected with the connecting plate, the press roller mounting seat is connected with the output end of the fine tuning cylinder and can be driven by the fine tuning cylinder to move up and down, and the press roller is mounted on the press roller mounting seat.

9. The pole piece cutting device as claimed in claim 8, wherein the press roller mounting seat comprises an upper mounting seat and a lower mounting seat, the upper mounting seat is connected with the output end of the fine tuning cylinder through a floating joint, the lower mounting seat is arranged on the upper mounting seat in a manner that the lower mounting seat can move up and down through a guide shaft, the press roller is mounted on the lower mounting seat, a second spring is sleeved outside the guide shaft, and two ends of the second spring are respectively in operative connection with the upper mounting seat and the lower mounting seat.

10. The pole piece cutting device according to claim 8 or 9, wherein an air blowing plate is arranged on the compression roller mounting seat and located outside the compression roller, and an air opening of the air blowing plate faces the cutting position of the cutting mechanism.

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