CN209551832U - Pole piece carving knife - Google Patents

Abstract

The utility model provides a kind of pole piece carving knife, main upper cutter shaft and the lower for including knife rest and being mounted on the knife rest, upper cutter shaft and lower are parallel to each other, several groups cutter and mutually matched bottom knife are provided on upper cutter shaft and lower between head and the tail, upper cutter shaft and lower head and the tail knife-edge part are respectively arranged with sponge ring and lower sponge ring.The pole piece carving knife of the utility model, it solves in the prior art, when rim charge is narrow, two pole pieces of head and the tail warp due to ultra-wide because being squeezed when cutting, it is final to influence battery safety, if and widening the problem of rim charge will increase cost, upper cutter shaft and lower head and the tail knife-edge part are respectively arranged with sponge ring and lower sponge ring, pole piece is pressed against when cutting by upper sponge ring and lower sponge ring, sponge encloses the effect stablized and reinforce pole piece, when rim charge can be prevented narrow, the pole piece at both ends warps or deforms because being squeezed when cutting pole piece.

Description

Pole piece carving knife

Technical field

The utility model belongs to field, and in particular to pole piece carving knife.

Background technique

In lithium battery, pole piece is the key factor for directly affecting battery performance.When preparing pole piece, pass through special solvent It is mixed respectively with the active material of positive and negative anodes with bonding agent, after agitated mixing, anode and cathode slurry substance is made, then will be manufactured Slurry is uniformly coated on the surface of metal foil, and pole piece is made after rolling in drying.

Since first manufactured pole-piece area is very big, in order to meet the requirement of different size lithium battery pole slice size, need to use Pole piece carving knife cuts pole piece.Electrodes of lithium-ion batteries carving knife mainly has roller knife and two kinds of disk carving knife at present. The blade of disk carving knife is disc-shaped, while having certain blade angle, passes through mutually matched cutter and bottom knife It is cut.Since disk carving knife cutting quality is relatively preferable, efficiency is higher, and the application in production is than wide.

However, in the prior art, when rim charge is narrow, two pole pieces of head and the tail can warp due to ultra-wide because being squeezed when cutting, most Battery safety is influenced eventually, and if widens rim charge and will lead to increased costs.Therefore, it still needs to develop a kind of new carving knife.

Utility model content

To solve in the prior art, because rim charge is narrow, it will lead to two poles of head and the tail when cutting pole piece with existing carving knife Piece ultra-wide, final the problem of influencing battery safety, the purpose of this utility model is to provide a kind of pole piece carving knives.

To achieve the above object, the utility model uses following technical scheme:

Pole piece carving knife, including

Knife rest；And

Upper cutter shaft and lower, the upper cutter shaft and lower both ends are slidably mounted on the knife rest, it is described on Cutter shaft and lower are parallel to each other；

Several groups cutter is provided between the upper cutter shaft head and the tail, be provided between the lower head and the tail with it is described on The mutually matched several groups bottom knife of blade；

The upper cutter shaft head and the tail knife-edge part is provided with sponge ring, and the lower head and the tail knife-edge part, which is provided with, plunges into the commercial sea Silk floss circle.

Upper cutter shaft and lower are parallel to each other, and both ends are slidably mounted on the knife rest.

Upper cutter shaft and lower drive cutter and bottom knife relative motion during sliding, and a pole piece is placed in greatly Between cutter shaft and lower, when cutter and bottom knife are tangent, the cutting to pole piece is completed.It can according to need and set on knife rest The positioning mechanism for limiting upper cutter shaft He cutting shaft position is set, and positioning mechanism can keep the position of cutter shaft and lower It is fixed, it avoids loosening or misplacing in motion process, reaches better cutting effect.

Preferably, the cutter and bottom knife are circular ring shape blade.

The material of cutter and bottom knife is hard alloy, and the hardness of hard alloy is higher, has preferable tough, toughness And wearability.

Preferably, the radius of the upper sponge ring is identical as the radius of cutter, the radius of the lower sponge ring with cut The radius of piece is identical.

Upper cutter shaft and lower head and the tail knife-edge part are respectively arranged with sponge ring and lower sponge ring, and pole piece is upper when cutting Sponge ring and lower sponge ring are pressed against, and sponge encloses the effect stablized and reinforce pole piece, when rim charge can be prevented narrow, cut pole The pole piece at both ends warps or deforms because being squeezed when piece.

Preferably, the interval between the cutter is equal.

Equal blade clearance is processed to the identical pole piece of size.

Preferably, the interval between the cutter includes the first interval, the second interval and third interval, between described first Every, second interval and third interval width ratio be (3~5): 2:1.

The setting of different intervals is processed to pole piece of different sizes between blade.

Preferably, the blade angle of the cutter and bottom knife is 15~30 degree.

It is further preferred that the cutter is identical with the blade angle of bottom knife.

Cutter is identical with the blade angle of bottom knife, the cutter that pole piece can be made to be subject in cutting process and cuts The active force of piece is equal, reduces extruding of the cutting edge to pole piece.

It is further preferred that the blade angle of the cutter and bottom knife is 20 degree.

Blade angle is 20 degree, and when blade cuts pole piece, cutting edge gradient weakens the squeezing action at pole piece edge, is subtracted The light generation of picking and burr as caused by squeezing action.

The beneficial effects of the utility model

1, the pole piece carving knife of the utility model solves in the prior art, when rim charge is narrow, two poles of head and the tail when cutting Sector-meeting warps due to ultra-wide because being squeezed, and finally influences battery safety, and if widen rim charge will increase cost the problem of, on Cutter shaft and lower head and the tail knife-edge part are respectively arranged with sponge ring and lower sponge ring, when pole piece is cut by upper sponge ring under Sponge ring is pressed against, and sponge encloses the effect stablized and reinforce pole piece, when rim charge can be prevented narrow, both ends when cutting pole piece Pole piece warps or deforms because being squeezed；

2, the pole piece carving knife of the utility model, the interval between blade, which can according to need, to be configured, equal knife Piece interval is processed to the identical pole piece of size, and different interval settings is processed to pole piece of different sizes；

3, the blade angle of cutter and bottom knife is 15~30 degree, and when blade cuts pole piece, edge of a knife gradient is to pole The squeezing action at piece edge weakens, and alleviates the generation of picking and burr as caused by squeezing action.

Detailed description of the invention

Fig. 1 is pole piece carving knife structural schematic diagram.

Specific embodiment

To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing to this The specific embodiment of utility model is described in detail.Many details are elaborated in being described below in order to sufficiently manage Solve the utility model.But the utility model can be implemented with being much different from the other way described again, this field skill Art personnel can do similar improvement without prejudice to the utility model connotation, therefore the utility model is not by described below Specific implementation limitation.

It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element There may also be elements placed in the middle.When an element is considered as " connection " another element, it can be directly to separately One element may be simultaneously present centering elements.Term as used herein "vertical", "horizontal", "left" and "right" And similar statement is for illustrative purposes only, is not meant to be the only embodiment.

Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term " and or " used herein includes Any and all combinations of one or more related listed items.

Embodiment

This example provides a kind of pole piece carving knives, as shown in Figure 1, including

Knife rest 10；And it is mounted on upper cutter shaft 20 and lower 30 on knife rest 10；

Wherein, upper cutter shaft 20 and lower 30 are parallel to each other, and both ends are slidably mounted on knife rest 10；Upper cutter shaft 20 is first It is provided with several groups cutter 210 between tail, is provided between 30 head and the tail of lower and the mutually matched several groups of cutter 210 Bottom knife 310；Upper cutter shaft 20 and 30 head and the tail knife-edge part of lower are respectively arranged with sponge ring 220 and lower sponge ring 320.

Cutter 210 and bottom knife 310 are circular ring shape blade, and material is hard alloy, and the hardness of hard alloy is higher, tool There are preferable tough, toughness and wearability, the radius of upper sponge ring 220 is identical as the radius of cutter 210, the lower sponge ring 320 radius is identical as the radius of bottom knife 310.Upper cutter shaft 20 and 30 head and the tail knife-edge part of lower are respectively arranged with sponge Circle 220 and lower sponge ring 320, pole piece are pressed against when cutting by upper sponge ring 220 and lower sponge ring 320, sponge enclose stablize and The effect for reinforcing pole piece, when rim charge can be prevented narrow, the pole piece at both ends warps or deforms because being squeezed when cutting pole piece.

When the interval between cutter 210 is equal, equal blade clearance is processed to the identical pole piece of size.

Cutter 210 is identical with the blade angle of bottom knife 310, and blade angle is identical, and pole piece can be made to cut through The cutter 210 being subject in journey is equal with the active force of bottom knife 310, reduces extruding of the population to pole piece.

Upper cutter shaft 20 and lower 30 drive 310 relative motion of cutter 210 and bottom knife during sliding, and big Pole piece is placed between cutter shaft 20 and lower 30, when cutter 210 and bottom knife 310 are tangent, completes the cutting to pole piece. It can also be set as needed the positioning mechanism for limiting 30 position of upper cutter shaft 20 and lower on knife rest 10, and positioning mechanism Cutter shaft 20 and the position of lower 30 can be kept to fix, avoid loosening or misplacing in motion process, reach better cutting Effect.

The pole piece carving knife of the utility model solves in the prior art, when rim charge is narrow, two pole pieces of head and the tail when cutting Warp due to ultra-wide because being squeezed, finally influence battery safety, and if widen rim charge will increase cost the problem of, upper cutter shaft It is respectively arranged with upper sponge ring and lower sponge ring with lower head and the tail knife-edge part, by upper sponge ring and lower sponge when pole piece is cut Circle is pressed against, and sponge encloses the effect stablized and reinforce pole piece, when rim charge can be prevented narrow, the pole piece at both ends when cutting pole piece It warps or deforms because being squeezed.Interval between blade, which can according to need, to be configured, and equal blade clearance can be used In the identical pole piece of processing size, different interval settings is processed to pole piece of different sizes.Cutter and bottom knife Blade angle be 15~30 degree, when blade cuts pole piece, edge of a knife gradient weakens the squeezing action at pole piece edge, mitigation The generation of picking and burr as caused by squeezing action.

A kind of embodiment of the utility model above described embodiment only expresses, the description thereof is more specific and detailed, But it should not be understood as limiting the scope of the patent of the utility model.It should be pointed out that for the common of this field For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to In the protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.

Claims (8)

1. pole piece carving knife, which is characterized in that including

Knife rest (10)；And

Upper cutter shaft (20) and lower (30), the upper cutter shaft (20) and lower (30) both ends are slidably mounted on the knife On frame (10), the upper cutter shaft (20) and lower (30) are parallel to each other；

Be provided with several groups cutter (210) between upper cutter shaft (20) head and the tail, be provided between the lower head and the tail with The mutually matched several groups bottom knife (310) of cutter (210)；

Upper cutter shaft (20) the head and the tail knife-edge part is provided with sponge ring (220), and lower (30) the head and the tail knife-edge part is equal It is provided with lower sponge ring (320).

2. pole piece carving knife according to claim 1, which is characterized in that the cutter (210) and bottom knife (310) are Circular ring shape blade.

3. pole piece carving knife according to claim 1, which is characterized in that the radius and upper slitter of the upper sponge ring (220) The radius of piece (210) is identical, and the radius of the lower sponge ring (320) is identical as the radius of bottom knife (310).

4. pole piece carving knife according to claim 1, which is characterized in that the interval between the cutter (210) is equal.

5. pole piece carving knife according to claim 1, which is characterized in that the interval between the cutter (210) includes The width ratio at the first interval, the second interval and third interval, first interval, the second interval and third interval is (3~5): 2:1.

6. pole piece carving knife according to claim 1, which is characterized in that the cutter (210) and bottom knife (310) Blade angle is 15~30 degree.

7. pole piece carving knife according to claim 6, which is characterized in that the cutter (210) and bottom knife (310) Blade angle is identical.

8. pole piece carving knife according to claim 6, which is characterized in that the cutter (210) and bottom knife (310) Blade angle is 20 degree.