CN218657042U - Lithium battery pole piece slitting cutter - Google Patents

Abstract

The utility model discloses a lithium battery pole piece cuts cutter, including the main shaft, the cover is equipped with a plurality of blade units on the main shaft, a plurality of blade units are hugged closely along the axial of main shaft and are arranged the setting, every blade unit includes the spacer, extension spring circle and annular blade, wherein, the spacer includes the radial outside protruding portion that extends of spacer body and spacer body one end tip, the periphery wall of protruding portion is the conical surface, extension spring circle and annular blade cover are located on the spacer, the extension spring circle presss from both sides in the protruding portion periphery wall and the annular blade side of spacer, the protruding end face of spacer pastes in annular blade and another adjacent blade unit and touches. The utility model discloses lithium battery pole piece divides cutter, during operation, the effort that annular blade receives partly can change the deformation of extension spring circle and the skew of extension spring circle and annular blade, makes annular blade atress can obtain the buffering, and self stress is little in the annular blade, is difficult for jumping garrulous, damage, improves annular blade's life.

Description

Lithium battery pole piece slitting cutter

Technical Field

The utility model relates to a battery production facility field especially relates to a lithium battery pole piece cuts cutter.

Background

The electric core of the button lithium battery generally comprises a positive plate, a negative plate and isolation paper between the positive plate and the negative plate, wherein the positive plate generally adopts an aluminum foil, and the negative plate generally adopts a copper foil. Regardless of the aluminum foil for manufacturing the positive plate or the copper foil for manufacturing the negative plate, the whole foil needs to be cut into strips after coating, and the strips are used for manufacturing the battery core. The foil slitting is completed by a slitting knife, and the conventional lithium battery pole piece slitting knife mainly comprises a plurality of blades sleeved on a knife shaft and a spacer bush between every two adjacent blades, wherein the blades are made of hard alloy and are circular and used for slitting the foil; the spacer bush is positioned between the adjacent blades and used for adjusting the distance between the blades so as to cut pole pieces of different models. When the lithium battery pole piece dividing and cutting tool is used, the lithium battery pole piece dividing and cutting tool is matched with the receiving roller or two groups of cutters are directly adopted for use, as shown in a patent document with the Chinese patent application number of 201811564950.1, the lithium battery pole piece dividing and cutting tool and the receiving roller or the two groups of cutters cannot be absolutely parallel due to the problem of installation precision, and axial stress cannot be avoided between the blades and the spacers under the condition of no absolute parallel. The existing lithium battery pole piece dividing cutter has the advantages that the blade is thin and broken, the blade is in hard contact with the spacer sleeve, in the using process, the axial stress between the blade and the spacer sleeve easily enables the blade to be broken and damaged, the machine is usually stopped, the blade is replaced, the production efficiency of a battery is low, the loss is serious, the dividing cutter is higher in the requirement on the machining precision of the spacer sleeve for ensuring that the blade and the spacer sleeve are attached together, and the processing difficulty of the spacer sleeve is large.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lithium-ion battery pole piece cuts cutter is related to.

Realize the utility model discloses the technical scheme of purpose is: the utility model provides a lithium battery pole piece cutting tool, which comprises a main shaft, the cover is equipped with a plurality of blade units on the main shaft, a plurality of blade units are hugged closely along the axial of main shaft and are arranged the setting, every blade unit includes the spacer sleeve, extension spring circle and annular blade, wherein, the spacer sleeve includes the radial outside protruding portion that extends of spacer sleeve body and spacer sleeve body one end tip, the periphery wall of protruding portion is the conical surface, the cross section diameter of protruding portion diminishes to the spacer sleeve interlude gradually by the end axial at protruding portion place on the spacer sleeve, extension spring circle and annular blade cover are located on the spacer sleeve, the extension spring circle presss from both sides between the protruding portion periphery wall and the annular blade side of spacer sleeve, annular blade pastes with the protruding terminal surface of spacer sleeve in another adjacent blade unit and touches.

Further, the protrusion is coaxial with the spacer body. The coaxial extension spring ring sleeved on the spacer sleeve can generate equal deformation along with axial stress in all circumferential directions, the action borne by the annular blade in all circumferential directions can be transited to the extension spring ring, and the annular blade is partially absorbed along with the deformation of the extension spring ring, so that the stress of all circumferential directions of the annular blade is uniformly changed along with the rotation of the slitting cutter, and the phenomenon that the stress of a certain part of the annular blade is not uniform and the stress of the certain part of the annular blade cannot be converted into the deformation of the extension spring ring and the micro-movement of the extension spring ring and the annular blade is broken can be avoided.

Further, the outer peripheral wall of the protrusion is a conical surface of a truncated cone. Since the spacer is annular, the outer peripheral wall of the projection is generally frustoconical.

Furthermore, the tension spring coil is sleeved on the protrusion part of the spacer sleeve. By the arrangement, when the annular blade is subjected to axial stress and transits to the tension spring ring, the deformation and micro-movement of the tension spring ring can be smoother.

Further, the annular blade is sleeved on the spacer body of the spacer. The annular blade is required to be contacted with the end face of the protrusion of the spacer sleeve in the adjacent other blade unit, and the inner diameter of the annular blade is required to be generally consistent with the diameter of the spacer sleeve body and sleeved on the spacer sleeve body.

The utility model discloses lithium battery pole piece divides cutter, in operation, the axial stress that the annular blade received passes through to the extension spring circle, extension spring circle atress further tensile deformation, the axial moves step down a little simultaneously, the extension spring circle axial moves step down the back a little, make the annular blade also have the space of axial skew, so, make the partly deformation that turns into the extension spring circle of effort that the annular blade received, and the skew of extension spring circle and annular blade, and then make the annular blade atress can be cushioned, self stress is little in the annular blade, be difficult for jumping garrulous, damage, improve the life of annular blade.

Drawings

Fig. 1 is a schematic view of a three-dimensional structure of the lithium battery pole piece slitting cutter of the present invention;

FIG. 2 is a schematic view of the axial sectional structure of the lithium battery pole piece slitting tool of the present invention;

fig. 3 is an enlarged schematic view of a portion a of fig. 2.

Detailed Description

The following description is made in detail in connection with the accompanying drawings for the preferred embodiments of the lithium battery pole piece slitting tool of the present invention:

as shown in fig. 1 to fig. 3, a cutting tool for lithium battery pole pieces includes a spindle 100, a plurality of blade units 10 are sleeved on the spindle 100, the blade units 10 are arranged along an axial direction of the spindle 100 in a closely attached manner, each blade unit 10 includes a spacer 1, a tension spring coil 2 and an annular blade 3, wherein the spacer 1 includes a spacer body 11 and a protrusion 12 extending radially outward from one end of the spacer body 11, an outer peripheral wall 121 of the protrusion 12 is a conical surface, a cross-sectional diameter of the protrusion 12 is gradually reduced from an end where the protrusion 12 is located on the spacer 1 to a middle section of the spacer 1 in an axial direction, the tension spring coil 2 and the annular blade 3 are sleeved on the spacer 1, the tension spring coil 2 is clamped between the outer peripheral wall 121 of the protrusion 12 of the spacer 1 and a side surface of the annular blade 3, and the annular blade 3 is in a closely contacted with an end surface of the protrusion 12 of the spacer 1 in another adjacent blade unit 10.

The utility model discloses a lithium battery pole piece slitting knife, the annular blade 3 in each blade unit 10 is used for cutting foil; the spacer 1 is used to position the annular blade 3 in each blade unit 10.

The utility model discloses lithium battery pole piece divides cutter, extension spring circle 2 is tensile state, extension spring circle 2 on spacer 1 is located to the cover, the centripetal force to the axle center shrink has all the time on the one hand, on the other hand, because extension spring circle 2 presss from both sides between the 12 periphery walls 121 of protruding portion and the 3 sides of annular blade of spacer 1, and the periphery walls 121 of the protruding portion 12 of spacer 1 in every blade unit 10 are the conical surface, this conical surface makes extension spring circle 2 that has the centripetal force have axial component effort to annular blade 3, this effort pushes annular blade 3 to the 12 terminal surfaces of protruding portion of spacer 1 in another adjacent blade unit 10, make annular blade 3 and the 12 terminal surfaces of protruding portion of spacer 1 in another adjacent blade unit 10 paste and touch, fix a position annular blade 3.

The utility model discloses lithium battery pole piece divides cutter, in operation, the axial stress that annular blade 3 received passes through to extension spring circle 2, extension spring circle 2 atress further tensile deformation, the axial moves the abdication a little simultaneously, 2 axial moves the abdication backs a little of extension spring circle, make annular blade 3 also have the space of axial skew, so, make the partial deformation that turns into extension spring circle 2 of effort that annular blade 3 received, and extension spring circle 2 and annular blade 3's skew, and then make annular blade 3 atress can cushion, self stress is little in the annular blade 3, be difficult for jumping garrulous, damage, improve annular blade 3's life.

The utility model discloses lithium battery pole piece divides cutter, jut 12 is coaxial with spacer body 11. The coaxial extension spring coils 2 sleeved on the spacer sleeve 1 can generate equal deformation due to axial stress in circumferential places, acting force applied to circumferential places of the annular blades 3 can be transited to the extension spring coils 2, and the annular blades are partially absorbed due to deformation and micro-movement of the extension spring coils 2, so that the circumferential places of the annular blades 3 are uniformly stressed and cannot be uniformly stressed, and the annular blades 3 cannot deform due to incapability of being stressed at certain places of the annular blades into deformation of the extension spring coils 2 and break due to deviation of the extension spring coils 2 and the annular blades 3 along with rotation of the slitting cutter.

The utility model discloses lithium battery pole piece divides cutter, the periphery wall of jut 12 is the conical surface of truncated cone. Since the spacer 1 is annular, the outer peripheral wall of the projection 12 is generally frustoconical.

The utility model discloses lithium battery pole piece divides cutter, 2 covers of extension spring coil locate on the jut 12 of spacer 1. By the arrangement, when the annular blade 3 is subjected to axial stress and transits to the tension spring coil 2, the deformation and slight movement of the tension spring coil 2 can be smoother.

The utility model discloses lithium battery pole piece divides the cutter, and 3 covers of annular blade are located on the spacer body 11 of spacer 1. The annular blade 3 is required to be in contact with the end face of the protrusion 12 of the spacer 1 in the adjacent other blade unit 10, and the inner diameter of the annular blade 3 is required to be generally consistent with the diameter of the spacer body 11 and to be sleeved on the spacer body 11.

The utility model discloses lithium battery pole piece divides cutter, spacer 1, extension spring circle 2 and annular blade 3 are the annular in blade unit 10, and during concrete installation, on main shaft 100 was located to spacer 1 cover, then, extension spring circle 2 and annular blade 3 suit in proper order in spacer 1, and a plurality of blade units 10 suit is gone up to main shaft 100 in proper order, and finally, the dress is at the blade unit 10 of main shaft 100, and its tip is because of the cover be equipped with annular blade 3 paste the holding ring 20 that touches.

The utility model discloses to the ordinary technical personnel of its technical field that belong to, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims (5)

1. The utility model provides a lithium battery pole piece cuts cutter, includes the main shaft, its characterized in that: the cover is equipped with a plurality of blade units on the main shaft, a plurality of blade units are hugged closely along the axial of main shaft and are arranged the setting, every blade unit includes the spacer sleeve, extension spring circle and annular blade, wherein, the spacer sleeve includes the radial outside bellying that extends of spacer sleeve body and spacer sleeve body one end tip, the periphery wall of bellying is the conical surface, the cross section diameter of bellying is diminished to the spacer sleeve interlude gradually by the end axial at bellying place on the spacer sleeve, extension spring circle and annular blade cover are located on the spacer sleeve, the extension spring circle presss from both sides in the bellying periphery wall and the annular blade side of spacer sleeve, annular blade pastes with the bellying terminal surface of spacer sleeve in another adjacent blade unit and touches.

2. The lithium battery pole piece slitting cutter as claimed in claim 1, characterized in that: the protrusion is coaxial with the spacer body.

3. The lithium battery pole piece slitting cutter as claimed in claim 1, characterized in that: the peripheral wall of the protrusion is a conical surface of a truncated cone.

4. The lithium battery pole piece slitting cutter as claimed in claim 1, characterized in that: the tension spring coil is sleeved on the protruding part of the spacer sleeve.

5. The lithium battery pole piece slitting cutter as claimed in claim 1, characterized in that: the annular blade is sleeved on the spacer sleeve body of the spacer sleeve.

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