CN209986063U - Pole piece cutting device and slicing equipment - Google Patents

Abstract

The utility model relates to a battery electricity core field of making aims at providing a pole piece cutting device and section equipment. The utility model provides a pole piece cutting device includes feeding mechanism, cutter mechanism, translation mechanism and die-cutting mechanism. The feeding mechanism and the cutter mechanism are arranged at intervals along the first direction, the feeding mechanism is used for driving the material belt to gradually approach the cutter mechanism along the first direction, and the cutter mechanism is driven by the punching mechanism to move along the second direction, so that the material belt is cut into pole pieces. Cutter mechanism is connected with the translation mechanism transmission, follows the first direction motion under translation mechanism's drive, and when cutter mechanism was equal along the speed of first direction and the rate of motion in material area, cutter mechanism cut to the material area, and feeding mechanism can realize continuous pay-off so, need not to shut down, has realized cutting and the synchronous of pay-off goes on, and slicing efficiency promotes by a wide margin.

Description

Pole piece cutting device and slicing equipment

Technical Field

The utility model relates to a battery electricity core field of making particularly, relates to a pole piece cutting device and section equipment.

Background

The laminated cell of the lithium ion power battery is made by alternately arranging positive and negative electrode plates and stacking the positive and negative electrode plates at intervals by a diaphragm. Existing lamination approaches are broadly classified as "zigzag" lamination, "bag-making" lamination, and "thermal composite" lamination. The two lamination processes of the Z-shaped lamination and the bag-making lamination have obvious defects that the efficiency is low, the rejection rate of short circuit detection is high, the electric core is easy to misplace in the transferring process and the like in the process of manufacturing the electric core, which cannot be solved at present. The thermal composite lamination is a novel mode for forming the battery cell, but the thermal composite lamination is not widely popularized in the lithium battery industry all the time because of the reasons that in the process of producing the battery cell, the efficiency is low, a single cut pole piece is easy to deflect in the process of feeding the battery cell, the material belt is easy to break when the tension is not constant, and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a pole piece cutting device to improve the problem of pole piece section inefficiency among the prior art.

The utility model discloses an aim at still including providing a section equipment, this section equipment includes foretell pole piece cutting device.

The embodiment of the utility model is realized like this:

a pole piece cutting device comprises a feeding mechanism, a cutter mechanism, a translation mechanism and a punching mechanism; the feeding mechanism is used for driving the material belt to move along a first direction; the cutter mechanism and the feeding mechanism are oppositely arranged at intervals along a first direction and are used for cutting the material belt; the translation mechanism is in transmission connection with the cutter mechanism and is used for driving the cutter mechanism to move along a first direction; the punching mechanism is in transmission connection with the cutter mechanism and used for driving the cutter mechanism to move along the second direction so as to cut the material belt.

In an embodiment of the present invention:

the cutter mechanism comprises a fixed cutter component and a movable cutter component movably connected to the fixed cutter component; the fixed knife assembly is in transmission connection with the translation mechanism, can move along a first direction under the action of the translation mechanism, and drives the movable knife assembly to move along the first direction; the movable cutter component is in transmission connection with the punching mechanism and can move along the second direction under the driving of the punching mechanism.

In an embodiment of the present invention:

the pole piece cutting device also comprises a feeding clamp for conveying the cut pole pieces, and the feeding clamp is arranged on one side of the cutter mechanism, which is far away from the feeding mechanism; the feeding clamp comprises an upper clamping plate and a lower clamping plate which are oppositely arranged along the second direction, the upper clamping plate is connected to the movable cutter assembly in a transmission mode, and the lower clamping plate is fixedly connected to the fixed cutter assembly.

In an embodiment of the present invention:

the upper clamping plate is detachably abutted with the movable cutter assembly and is used for moving in a direction away from the lower clamping plate under the driving of the movable cutter assembly;

the pole piece cutting device further comprises an elastic piece connected to the upper clamping plate, and the elastic piece is used for enabling the upper clamping plate to have the trend of moving towards the direction close to the lower clamping plate.

In an embodiment of the present invention:

the two ends of the elastic piece are respectively detachably connected with the upper clamping plate and the fixed knife component.

In an embodiment of the present invention:

the punching mechanism comprises a first driving motor and an eccentric wheel, and the first driving motor is used for driving the eccentric wheel to rotate; the cutter mechanism is in transmission connection with the eccentric wheel and can slide in a reciprocating manner along a second direction under the driving of the eccentric wheel.

In an embodiment of the present invention:

the punching mechanism also comprises a guide plate, and the guide plate is in transmission connection with the eccentric wheel and can move along a second direction under the drive of the eccentric wheel; one end of the guide plate is provided with a guide bulge extending along the first direction; the cutter mechanism is slidably engaged with the guide projection.

In an embodiment of the present invention:

the feeding mechanism comprises a second driving motor, a driving roller and a pressing roller, wherein the driving roller and the pressing roller are oppositely arranged at intervals and used for forming a gap through which the feeding belt passes; the second driving motor is used for driving the driving roller to rotate, and the driving roller is used for driving the material belt to move along the first direction.

In an embodiment of the present invention:

the pole piece cutting device also comprises a first material clamp and a second material clamp which are arranged between the cutter mechanism and the feeding mechanism; the first material clamp is fixedly connected to the feeding mechanism, and the second material clamp is fixedly connected to the cutter mechanism; the plurality of first material clamps and the plurality of second material clamps are arranged alternately.

A slicing device comprises any one of the pole piece cutting devices.

The utility model discloses beneficial effect includes:

the embodiment of the utility model provides a pole piece cutting device, it includes feeding mechanism, cutter mechanism, translation mechanism and die-cutting mechanism. The feeding mechanism and the cutter mechanism are arranged at intervals along the first direction, the feeding mechanism is used for driving the material belt to gradually approach the cutter mechanism along the first direction, and the cutter mechanism is driven by the punching mechanism to move along the second direction, so that the material belt is cut into pole pieces. Cutter mechanism is connected with the translation mechanism transmission, follows the first direction motion under translation mechanism's drive, and when cutter mechanism was equal along the speed of first direction and the rate of motion in material area, cutter mechanism cut to the material area, and feeding mechanism can realize continuous pay-off so, need not to shut down, has realized cutting and the synchronous of pay-off goes on, and slicing efficiency promotes by a wide margin.

The embodiment of the utility model provides a section equipment, including foretell pole piece cutting device, consequently also have realized continuous pay-off, cut and go on in step with the pay-off, the efficient beneficial effect of section.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a pole piece cutting device provided in embodiment 1 of the present invention at a first viewing angle;

fig. 2 is a schematic structural diagram of a pole piece cutting device provided in embodiment 1 of the present invention at a second viewing angle;

fig. 3 is a schematic cross-sectional structure view of a cutter mechanism in the pole piece cutting device provided in embodiment 1 of the present invention;

FIG. 4 is a schematic sectional view taken along line IV-IV in FIG. 2.

Icon: 010-pole piece cutting device; 100-a feeding mechanism; 110-a second drive motor; 120-drive roll; 130-a press roll; 200-a cutter mechanism; 211-fixed cutter; 212-a tool apron; 213-a guide sleeve; 221-a connecting handle; 222-a movable cutter; 223-cutter fixing plate; 224-pole piece press plate; 225-guide post; 226-cam follower; 227-a second connector; 230-a feed nip; 231-an upper clamping plate; 232-lower splint; 233-a first connecting member; 234-a resilient member; 300-a die cutting mechanism; 310-a first drive motor; 320-eccentric wheel; 330-a guide plate; 331-a guide projection; 400-a translation mechanism; 510-a first material clamp; 520-a second material clamp; 600-material belt.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that the terms "first", "second", and the like are used for distinguishing the description, and are not to be construed as indicating or implying relative importance.

Example 1

Fig. 1 is a schematic structural diagram of a pole piece cutting device 010 provided in this embodiment at a first viewing angle, and fig. 2 is a schematic structural diagram of the pole piece cutting device 010 provided in this embodiment at a second viewing angle. Referring to fig. 1 and fig. 2, the present embodiment provides a pole piece cutting device 010, which includes a feeding mechanism 100, a cutter mechanism 200, a translation mechanism 400, and a punching mechanism 300. The feeding mechanism 100 and the cutter mechanism 200 are arranged at intervals along a first direction, the feeding mechanism 100 is used for driving the material belt 600 to gradually approach the cutter mechanism 200 along the first direction, and the cutter mechanism 200 is driven by the punching mechanism 300 to move along a second direction, so that the material belt 600 is cut into pole pieces. Cutter mechanism 200 is connected with translation mechanism 400 transmission, follows the first direction motion under translation mechanism 400's drive, and when cutter mechanism 200 was equal along the speed of first direction and the moving speed of material area 600, cutter mechanism 200 cut to material area 600, and feeding mechanism 100 can realize continuous pay-off like this, need not to shut down, has realized cutting and the synchronous of pay-off going on, and slicing efficiency promotes by a wide margin.

The pole piece cutting device 010 provided by the embodiment is further described as follows:

referring to fig. 1 and fig. 2, in the present embodiment, the feeding mechanism 100 includes a second driving motor 110, a driving roller 120 and a pressing roller 130, the pressing roller 130 and the driving roller 120 are relatively spaced along a second direction, so as to form a gap through which the material tape 600 passes, and the pressing roller 130 presses the material tape 600 against the driving roller 120, so that the driving roller 120 can drive the material tape 600 to move. The second driving motor 110 drives the driving roller 120 to rotate, so that the driving roller 120 pulls the material strip 600 to continuously and uniformly move along the first direction a at a first preset speed, thereby ensuring that the linear speed of the driving roller 120 along the first direction is completely consistent with the unwinding linear speed.

Fig. 3 is a schematic cross-sectional structure diagram of a cutter mechanism 200 in a pole piece cutting device 010 according to this embodiment. Referring to fig. 3, in the present embodiment, the cutter mechanism 200 includes a cutter mechanism 200 spaced apart from the feeding mechanism 100 along a first direction, and the cutter mechanism 200 is driven by the punching mechanism 300 to reciprocate along a second direction B, so that the material strip 600 is cut into individual pole pieces. Meanwhile, the cutter mechanism 200 is in transmission connection with the translation mechanism 400 and can slide along the first direction A under the driving of the translation mechanism 400, and when the cutter mechanism 200 and the material belt 600 are relatively static along the first direction, the cutter mechanism 200 cuts the material belt 600, so that the material conveying and slicing are synchronously carried out without stopping when cutting.

Further, the cutter mechanism 200 includes a fixed cutter member and a movable cutter member slidably coupled to the fixed cutter member. The fixed knife assembly comprises a knife seat 212 and a fixed knife 211 fixedly connected to the knife seat 212, the knife seat 212 is fixedly connected to the moving platform of the translation mechanism 400, and the moving platform drives the fixed knife to reciprocate along the first direction a. The movable cutter assembly comprises a connecting handle 221 and a movable cutter 222 fixedly connected with the connecting handle 221, the connecting handle 221 is slidably connected with the cutter seat 212 and is connected with the punching mechanism 300 in a transmission mode, the connecting handle 221 moves along a first direction A under the driving of the cutter seat 212, and when the cutting is needed, the connecting handle 221 can move along a second direction B under the driving of the punching mechanism 300, and the material belt 600 is cut under the combined action of the movable cutter 222 and the fixed cutter 211. Specifically, the movable knife assembly further includes a knife fixing plate 223, and the movable knife 222 is fixedly connected to the connecting handle 221 through the knife fixing plate 223.

In order to ensure the stability of the movable knife assembly moving along the second direction B relative to the fixed knife assembly, the fixed knife assembly further comprises a guide sleeve 213 fixedly connected to the knife holder 212, the movable knife assembly further comprises a guide post 225 fixedly connected to the cutter fixing plate 223, the guide post 225 extends along the second direction B, and the guide sleeve 213 is slidably sleeved on the guide post 225.

Further, still be connected with pole piece clamp plate 224 on the cutter fixed plate 223, pole piece clamp plate 224 sets up the both sides in material area 600 with fixed cutter 211 relatively to form the clearance that supplies material area 600 to pass through between pole piece clamp plate 224 and the fixed cutter 211, when activity cutter 222 moves along second direction B, when cutting material area 600, material area 600 is compressed tightly on fixed cutter 211 by pole piece clamp plate 224, guarantees to cut in-process material area 600 and can not skid the off tracking.

FIG. 4 is a schematic sectional view taken along line IV-IV in FIG. 2. Referring to fig. 4, in the present embodiment, the punching mechanism 300 includes a first driving motor 310 and an eccentric wheel 320 connected to the first driving motor 310, a power output shaft of the first driving motor 310 is fixedly connected to the eccentric wheel 320, so as to drive the eccentric wheel 320 to rotate, the eccentric wheel 320 is in transmission connection with the connecting rod 221, and when the eccentric wheel 320 rotates, the connecting rod 221 is driven by the eccentric wheel 320 to reciprocate along the second direction B. Further, the punching mechanism 300 further includes a guide plate 330 in transmission connection with the eccentric wheel 320, the guide plate 330 is provided with a guide protrusion 331 extending along the first direction a, the connecting handle 221 is slidably engaged with the guide protrusion 331, and the connecting handle 221 can reciprocate along the second direction B under the driving of the guide plate 330. Specifically, the movable blade assembly further includes a plurality of cam followers 226 connected to the connecting handle 221, the plurality of cam followers 226 are arranged in two rows at intervals along the second direction, and a gap for engaging with the guide protrusion 331 is formed between the two rows of cam followers 226.

Referring to fig. 1 and fig. 2, in the present embodiment, the pole piece cutting device 010 further includes a feeding clip 230 disposed on a side of the cutter mechanism 200 away from the feeding mechanism 100, and the feeding clip 230 is used for conveying the cut pole piece. The feeding clamp 230 comprises an upper clamp plate 231 and a lower clamp plate 232 which are oppositely arranged, the upper clamp plate 231 is connected with the movable knife assembly and can move along with the movable knife assembly, and the lower clamp plate 232 is fixedly connected to the fixed knife assembly and moves along with the fixed knife assembly. Specifically, the lower clamp plate 232 is fixedly connected to the tool holder 212. The upper clamp plate 231 is fixedly connected with a first connecting piece 233, the first connecting piece 233 is approximately L-shaped, the connecting handle 221 is fixedly connected with a second connecting piece 227, the second connecting piece is approximately L-shaped, the second connecting piece 227 can be detachably abutted below the first connecting piece 233, and therefore when the connecting handle 221 moves upwards, the second connecting piece 227 is abutted with the first connecting piece 233, and the upper clamp plate 231 connected to the first connecting piece 233 is driven to move upwards. The pole piece cutting device 010 further comprises an elastic member 234, and two ends of the elastic member 234 are respectively connected with the upper clamping plate 231 and the tool apron 212, so that the upper clamping plate 231 has a tendency to move along the second direction B. When the movable knife assembly is driven by the punching mechanism 300 to move along the second direction B, the second connecting piece 227 is separated from the first connecting piece 233, the upper clamping plate 231 is driven by the elastic piece 234 to move along the second direction B, and the pole piece is ensured to be clamped between the upper clamping plate 231 and the lower clamping plate 232 through the elastic force of the elastic piece 234; when the movable knife assembly moves in the reverse direction (i.e., upward) in the second direction B under the driving of the punching mechanism 300, the second connecting member 227 abuts against the first connecting member 233 to drive the upper clamp plate 231 to move together, the gap between the upper clamp plate 231 and the lower clamp plate 232 increases, the pole piece is released, and the elastic member 234 is stretched; thus, the clamping or loosening of the pole piece is realized. Further, a guide mechanism is provided between the upper clamp plate 231 and the cutter holder 212 to guide the movement of the upper clamp plate 231.

Furthermore, the two ends of the elastic member 234 are detachably connected with the feeding clamp and the tool apron 212, so that the clamping degree of the feeding clamp 230 can be adjusted by changing the specification of the elastic member 234 during use, and the phenomenon that the pole piece is skewed during the conveying process due to the fact that the pole piece is damaged by too large clamping force or too small clamping force is avoided. Preferably, the elastic member 234 is a spring.

With reference to fig. 1 and fig. 2, in the present embodiment, the pole piece cutting device 010 further includes a first material clamp 510 and a second material clamp 520 disposed between the cutter mechanism 200 and the feeding mechanism 100, and the plurality of first material clamps 510 and the plurality of second material clamps 520 are disposed at intervals along the width direction of the material tape 600. The first material clamps 510 are fixedly connected to the feeding mechanism 100, and the second material clamps 520 are fixedly connected to the cutter mechanism 200 and can move along the first direction a with the cutter mechanism 200. The first clamp 510 has a first channel communicating with the feeding mechanism 100, and the second clamp 520 has a second channel communicating with the gap between the pole piece holder 224 and the fixed cutter 211. Further, the first channel, the second channel, the gap between the pole piece pressing plate 224 and the fixed cutter 211, and the gap between the upper clamping plate 231 and the lower clamping plate 232 are located on the same horizontal plane, so as to form a feeding channel for the material belt 600 to pass through. Further, the plurality of first material clamps 510 and the plurality of second material clamps 520 are alternately arranged, that is, the second material clamps 520 are arranged between two adjacent first material clamps 510, and the first material clamps 510 are arranged between two adjacent second material clamps 520.

The embodiment of the utility model provides a pole piece cutting device 010, in operation, feeding mechanism 100 drives material area 600 and moves along first direction A with first preset speed, cutter mechanism 200 is along first direction A accelerated motion under translation mechanism 400's drive, when cutter mechanism 200's speed is accelerated to first preset speed, movable cutter unit moves along second direction B under die-cutting mechanism 300's drive, thereby cut material area 600, the pole piece that will cut down is foldd to the simultaneous feeding clamp 230 is pressed from both sides tightly, send piece work, prevent that the sheet-fed time from taking place crooked problem. Therefore, the purpose of simultaneously carrying out continuous feeding, feeding and cutting work of the feeding mechanism 100 is realized, the slicing efficiency and precision are greatly improved, the operation is convenient, the failure rate is low, the whole machine carries out cutting work through a cutter, and the problem of burrs and dust generated in pole piece forming is effectively reduced. Meanwhile, the linear speed of the driving roller 120 is completely consistent with the linear speed during unreeling by controlling the feeding mechanism 100, so that a floating mechanism of the middle material belt 600 can be omitted, and the problem of belt breakage caused by unstable tension is avoided.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A pole piece cutting device, comprising:

the cutting device comprises a feeding mechanism, a cutter mechanism, a translation mechanism and a punching mechanism; the feeding mechanism is used for driving the material belt to move along a first direction; the cutter mechanism and the feeding mechanism are oppositely arranged at intervals along a first direction and are used for cutting the material belt; the translation mechanism is in transmission connection with the cutter mechanism and is used for driving the cutter mechanism to move along the first direction; the punching mechanism is in transmission connection with the cutter mechanism and is used for driving the cutter mechanism to move along a second direction so as to cut the material belt.

2. The pole piece trimming apparatus of claim 1, wherein:

the cutter mechanism comprises a fixed cutter component and a movable cutter component movably connected to the fixed cutter component; the fixed knife assembly is in transmission connection with the translation mechanism, can move along the first direction under the action of the translation mechanism, and drives the movable knife assembly to move along the first direction; the movable cutter component is in transmission connection with the punching mechanism and can move along the second direction under the driving of the punching mechanism.

3. The pole piece trimming apparatus of claim 2, wherein:

the pole piece cutting device also comprises a feeding clamp for conveying the cut pole pieces, and the feeding clamp is arranged on one side of the cutter mechanism, which is far away from the feeding mechanism; the feeding clamp comprises an upper clamping plate and a lower clamping plate which are oppositely arranged along the second direction, the upper clamping plate is connected with the movable cutter assembly in a transmission mode, and the lower clamping plate is fixedly connected with the fixed cutter assembly.

4. The pole piece trimming apparatus of claim 3, wherein:

the upper clamping plate is detachably abutted against the movable knife assembly and is used for moving in a direction away from the lower clamping plate under the driving of the movable knife assembly;

the pole piece cutting device further comprises an elastic piece connected to the upper clamping plate, and the elastic piece is used for enabling the upper clamping plate to have a trend of moving towards the direction close to the lower clamping plate.

5. The pole piece trimming apparatus of claim 4, wherein:

and two ends of the elastic piece are respectively detachably connected with the upper clamping plate and the fixed knife assembly.

6. The pole piece trimming apparatus of claim 1, wherein:

the punching mechanism comprises a first driving motor and an eccentric wheel, and the first driving motor is used for driving the eccentric wheel to rotate; the cutter mechanism is in transmission connection with the eccentric wheel and can slide in a reciprocating manner along a second direction under the driving of the eccentric wheel.

7. The pole piece trimming apparatus of claim 6, wherein:

the punching mechanism further comprises a guide plate, the guide plate is in transmission connection with the eccentric wheel and can move along the second direction under the driving of the eccentric wheel; one end of the guide plate is provided with a guide bulge extending along the first direction; the cutter mechanism is slidably engaged with the guide projection.

8. The pole piece trimming apparatus of claim 1, wherein:

the feeding mechanism comprises a second driving motor, a driving roller and a pressing roller, and the driving roller and the pressing roller are arranged oppositely at intervals and used for forming a gap for the material belt to pass through; the second driving motor is used for driving the driving roller to rotate, and the driving roller is used for driving the material belt to move along the first direction.

9. The pole piece trimming apparatus of claim 1, wherein:

the pole piece cutting device also comprises a first material clamp and a second material clamp which are arranged between the cutter mechanism and the feeding mechanism; the first material clamp is fixedly connected to the feeding mechanism, and the second material clamp is fixedly connected to the cutter mechanism; the plurality of first material clamps and the plurality of second material clamps are arranged alternately.

10. A slicing apparatus, characterized by:

the slicing apparatus comprises a pole piece cutting device as claimed in any one of claims 1 to 9.

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