CN215395450U

CN215395450U - Slitting and dust collecting structure

Info

Publication number: CN215395450U
Application number: CN202121303518.4U
Authority: CN
Inventors: 李昌涛; 严海宏; 陈海平; 黄胜武; 李华杰
Original assignee: Dongguan Yakang Precision Machinery Co Ltd
Current assignee: Dongguan Yakang Precision Machinery Co Ltd
Priority date: 2021-06-10
Filing date: 2021-06-10
Publication date: 2022-01-04
Anticipated expiration: 2031-06-10

Abstract

The utility model discloses a slitting and dust collecting structure which comprises a front roller and a rear roller for pole piece transmission, wherein an upper and a lower combined supports are arranged between the front roller and the rear roller, a first transverse guide rail is arranged on an upper support of the upper and the lower combined supports, a slitting mechanism is movably arranged on the first transverse guide rail, a second transverse guide rail is arranged on a lower support of the upper and the lower combined supports, a lower dust collecting assembly is movably arranged on the second transverse guide rail, and a dust collecting groove corresponding to the slitting mechanism is arranged on the lower dust collecting assembly. The slitting and dust collecting structure provided by the utility model can automatically remove various dust particles generated in slitting of pole pieces at the source while slitting, thereby avoiding serious potential safety hazards of subsequent short circuit, high self-discharge, low cycle life, heating, smoke generation, combustion, explosion and the like in a battery cell caused by difficulty in removing the dust particles, and improving the safety performance of the battery cell.

Description

Slitting and dust collecting structure

Technical Field

The utility model relates to the technical field of lithium ion battery production, in particular to a slitting and dust collecting structure.

Background

With the development of modern society, people have more and more extensive applications to various mobile devices, and the demand of the mobile devices for high-energy batteries is also greater and greater. Lithium ion batteries have many outstanding advantages such as light weight, large energy storage, large power, no pollution, long service life, small self-discharge coefficient, wide temperature adaptation range and the like, and are gradually favored by people and become the best power source of mobile devices.

Most of square or cylindrical lithium ion battery cells are obtained by pole piece slitting and then winding, wherein a large amount of dust such as pole piece base material metal particles, pole piece active material particles and cutter-worn metal particles generated by a slitting cutter during pole piece slitting can remain on the surface of the pole piece, and the dust particles are more difficult to remove after subsequent roll passing, winding and winding so as to possibly cause stress concentration of local microstructures in the cells, and serious potential safety hazards such as short circuit, high self-discharge, low cycle life, heating, smoke generation, combustion, explosion and the like in the cells can be caused in the subsequent processing of the cells or the further use process of the cells.

At present, divide strip dust collector to establish generally in the back of dividing the cutter and the preceding of pole piece rolling, the dust granule that cuts the cutter and produce when cutting the pole piece can a large amount remain on the surface of pole piece, and two parts about being divided into banding pole piece and all coming out from the cutter and all can dividing into like this, must pass through the roller like this, inside some dust granules can imbed the pole piece after passing the roller, even follow-up dust collector that passes through removes dust also can't clear away these dust granules that have the potential safety hazard totally like this.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art, and provides a slitting and dust collecting structure which can automatically remove various dust particles generated in slitting pole pieces at the source while slitting, so that the hidden danger of influencing the safety of a battery cell caused by dust is greatly reduced.

The technical scheme of the utility model is as follows:

the utility model provides a cut and dust collection structure, passes the roller after and including the preceding roller that is used for pole piece transmission, preceding roller and back are crossed and are provided with upper and lower sectional shelf between the roller, be equipped with first transverse guide on the upper bracket of upper and lower sectional shelf, the activity is provided with cuts the mechanism on the first transverse guide, be equipped with second transverse guide on the lower shelf of upper and lower sectional shelf, the activity is provided with down dust absorption subassembly on the second transverse guide, be equipped with on the lower dust absorption subassembly with cut the corresponding dust absorption groove of mechanism.

Furthermore, the first transverse guide rail is movably provided with two cutting mechanisms, and the lower dust absorption assemblies are correspondingly provided with two cutting mechanisms.

Further, the slitting mechanism comprises a circular slitting knife, a transmission assembly, a slitting knife transmission motor, a slitting assembly and a slitting assembly up-and-down movement motor, the slitting assembly up-and-down movement motor is movably arranged on the first transverse guide rail, a motor shaft of the slitting assembly up-and-down movement motor is connected with the slitting assembly through a cam structure, the slitting knife transmission motor is fixedly arranged at the lower part of the slitting assembly, and the motor shaft of the slitting knife transmission motor is connected with the circular slitting knife through the transmission assembly.

Furthermore, the slitting mechanism further comprises a slitting knife dust collection cover, the slitting knife dust collection cover is arranged on the upper portion of the circular slitting knife and forms a dust collection gap with the circular slitting knife, and one side of the slitting knife dust collection cover is connected with a dust collection pipe communicated with the dust collection gap.

Furthermore, the end part of the upper bracket of the upper and lower combined bracket is provided with an adjusting motor which controls the up-and-down movement motor of the slitting component to move on the first transverse guide rail and the lower dust collection component to move on the second transverse guide rail.

Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, the upper side and the lower side of the circular slitting knife are respectively provided with the slitting knife dust hood and the lower dust suction assembly, the upper part of the circular slitting knife is wrapped by the slitting knife dust hood, only the cutting edge is exposed, the dust suction groove of the lower dust suction assembly is opposite to the cutting edge, the upper dust suction structure and the lower dust suction structure ensure that dust is perfectly collected without overflowing, so that dust particles (pole piece metal particles, pole piece active material particles, metal particles abraded by the knife and the like) generated when the circular slitting knife slits a pole piece are sucked and taken away immediately, the dust particles are removed from the source of the generated dust particles, and thus serious potential safety hazards of subsequent short circuit, high self-discharge, low cycle life, heating, smoke, burning, explosion and the like in a battery cell caused by the difficulty in removing the dust particles are avoided, and the safety performance of the battery cell is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural view of a slitting and dust-collecting structure according to an embodiment of the present invention;

FIG. 2 is a schematic view of a slitting mechanism according to the present invention;

FIG. 3 is a schematic view of a slitting and dust-collecting structure according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a pole piece of a slitting and dust collecting structure according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

In order to explain the technical means of the present invention, the following description will be given by way of specific examples.

Examples

Referring to fig. 1, an embodiment of the present invention provides a slitting and dust collecting structure, including a front roller 1 and a rear roller 2 for pole piece transmission, an upper and lower combined bracket 3 is disposed between the front roller 1 and the rear roller 2, a first transverse guide 4 is disposed on an upper bracket of the upper and lower combined bracket 3, two slitting mechanisms are movably disposed on the first transverse guide 4 (in other embodiments, the slitting mechanisms may be configured as a single set or as multiple sets as required), a second transverse guide 6 is disposed on a lower bracket of the upper and lower combined bracket 3, two lower dust collecting assemblies 7 are movably disposed on the second transverse guide 6, and dust collecting grooves corresponding to the slitting mechanisms are disposed on the lower dust collecting assemblies 7.

As shown in fig. 2, the slitting mechanism includes a circular slitting knife 51, a slitting knife dust hood 52, a transmission assembly 53, a slitting knife transmission motor 54, a slitting assembly 55, and a slitting assembly up-and-down movement motor 56. The up-and-down movement motor 56 of the slitting component is movably arranged on the first transverse guide rail 4, the end part of the upper bracket of the up-and-down combined bracket 3 is provided with an adjusting motor 8 for controlling the up-and-down movement motor 56 of the slitting component to move on the first transverse guide rail 4 and the lower dust absorption component 7 to move on the second transverse guide rail 6, the two slitting mechanisms can adjust the relative position according to the width of the pole piece, and the adjusting motor 8 can simultaneously control the slitting mechanisms and the corresponding lower dust absorption component 7 to move, so that the position can be quickly adjusted when the width of the pole piece changes; the motor shaft of the up-and-down movement motor 56 of the slitting component is connected with the slitting component 55 through a cam structure, and the up-and-down movement of the slitting component 55 is realized through the cam structure; the dividing cutter transmission motor 54 is fixedly arranged at the lower part of the dividing cutter assembly 55, a motor shaft of the dividing cutter transmission motor 54 is connected with the circular dividing cutter 51 through the transmission assembly 53, and the dividing cutter transmission motor 54 drives the circular dividing cutter 51 to rotate through the transmission assembly 53 to cut pole pieces or gummed paper; the sub-cutter dust hood 52 covers the upper part of the circular sub-cutter 51, a dust suction gap is formed between the sub-cutter dust hood 52 and the circular sub-cutter 51, and one side of the sub-cutter dust hood 52 is connected with a dust suction pipe 57 communicated with the dust suction gap.

The upper side and the lower side of the circular slitting knife 51 are respectively provided with the slitting knife dust hood 52 and the lower dust absorption assembly 7, wherein the upper part of the circular slitting knife 51 is wrapped by the slitting knife dust hood 52, only the cutting edge is exposed, the dust absorption groove of the lower dust absorption assembly 7 is right opposite to the cutting edge, the upper dust absorption structure and the lower dust absorption structure ensure that dust is perfectly collected without overflowing, dust particles (pole piece metal particles, pole piece active material particles, metal particles abraded by a knife and the like) generated when the circular slitting knife 51 slits pole pieces are immediately sucked and taken away, the dust particles are removed from the source of the generated dust particles, and therefore serious potential safety hazards of follow-up short circuit, high self-discharge, low cycle life, heating, smoke, burning, explosion and the like in a battery cell caused by the difficulty in removing the dust particles are avoided, and the safety performance of the battery cell is improved.

Description of the function: the cutting and dust collection structure is mainly used for one-output (more than two-output) laser tab forming equipment, as shown in fig. 3, one pole piece 10 is cut into three pieces, the three pieces of pole pieces 10 can enter different tab processing and detection stations through a back roller 2 winding belt, and finally the pole pieces are collected into a pole roll at a collecting station, and the cutting and dust collection structure can assist an automatic belt conveying structure to smoothly convey the belt to the collecting station. Circular branch cutter 51 is that to lift up the form when equipment normally processes utmost point ear 10 and is the separation with pole piece 10 promptly, when detecting that there is adhesive tape 20 when cutting the mechanism on the pole piece 10 like figure 4, circular branch cutter 51 pushes down and cuts off adhesive tape 20 to surely constantly utmost point ear causes the pole piece to take when avoiding laser beam machining utmost point ear, avoids utmost point ear processing unusual and pole piece extravagant.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a cut and dust absorption structure which characterized in that: the pole piece conveying device comprises a front roller and a rear roller which are used for pole piece conveying, wherein an upper combined support and a lower combined support are arranged between the front roller and the rear roller, a first transverse guide rail is arranged on an upper support of the upper combined support and a lower transverse guide rail are movably arranged on the first transverse guide rail, a cutting mechanism is movably arranged on the first transverse guide rail, a second transverse guide rail is arranged on a lower support of the upper combined support and the lower combined support, a lower dust collection assembly is movably arranged on the second transverse guide rail, and a dust collection groove corresponding to the cutting mechanism is formed in the lower dust collection assembly.

2. A slitting and dust collecting structure as claimed in claim 1, wherein: two slitting mechanisms are movably arranged on the first transverse guide rail, and two lower dust absorption assemblies are correspondingly arranged.

3. A slitting and dust collecting structure as claimed in claim 1 or 2, wherein: the slitting mechanism comprises a circular slitting knife, a transmission assembly, a slitting knife transmission motor, a slitting assembly and a slitting assembly up-and-down movement motor, wherein the slitting assembly up-and-down movement motor is movably arranged on the first transverse guide rail, a motor shaft of the slitting assembly up-and-down movement motor is connected with the slitting assembly through a cam structure, the slitting knife transmission motor is fixedly arranged at the lower part of the slitting assembly, and the motor shaft of the slitting knife transmission motor is connected with the circular slitting knife through the transmission assembly.

4. A slitting and dust collecting structure as claimed in claim 3, wherein: the slitting mechanism further comprises a slitting knife dust collection cover, the slitting knife dust collection cover is arranged on the upper portion of the circular slitting knife and forms a dust collection gap with the circular slitting knife, and one side of the slitting knife dust collection cover is connected with a dust collection pipe communicated with the dust collection gap.

5. A slitting and dust collecting structure as claimed in claim 3, wherein: and the end part of the upper bracket of the upper and lower combined brackets is provided with an adjusting motor which controls the up-and-down movement motor of the slitting component to move on the first transverse guide rail and the lower dust collection component to move on the second transverse guide rail.