CN218947762U

CN218947762U - Cutting device and cutting system of battery plastic-aluminum membrane

Info

Publication number: CN218947762U
Application number: CN202222330997.XU
Authority: CN
Inventors: 梁均林; 彭汉兴; 郑富雄; 詹发荣; 廖钦林
Original assignee: Guangdong Fenghua New Energy Co ltd
Current assignee: Guangdong Fenghua New Energy Co ltd
Priority date: 2022-09-01
Filing date: 2022-09-01
Publication date: 2023-05-02
Anticipated expiration: 2032-09-01

Abstract

The utility model relates to the technical field of lithium battery production, in particular to a cutting device and a cutting system for a battery aluminum-plastic film, wherein the cutting device for the battery aluminum-plastic film comprises an upper cutter and a lower cutter, the upper cutter comprises an upper cutter frame base and an upper cutter, and the upper cutter is mechanically connected with the upper cutter frame base; the lower cutter comprises a lower cutter frame base and a lower cutter, and the lower cutter is mechanically connected with the lower cutter frame base; wherein, the upper cutter and the lower cutter are both made of materials with physical and chemical properties not lower than those of tungsten steel; the upper cutting tool and the lower cutting tool reciprocate oppositely to finish cutting the material; the upper and lower cutters are made of tungsten steel sheets, and the aluminum plastic film cutting machine has the advantages of being high in hardness, high in wear resistance, good in strength and toughness, heat-resistant, corrosion-resistant and the like, enabling the cut to be smooth and smooth after the aluminum plastic film is cut, free of scraps and burrs and enabling the cutting cycle times to be high, avoiding frequent machine halt and cutter replacement in production and use, guaranteeing product quality and simultaneously greatly improving production efficiency.

Description

Cutting device and cutting system of battery plastic-aluminum membrane

Technical Field

The utility model relates to the technical field of lithium battery production, in particular to a cutting device and a cutting system for an aluminum plastic film of a battery.

Background

The battery is a common energy supply device, in particular to a lithium battery, which has the advantages of quick charge, light weight, large energy storage, large power, long service life, small self-discharge coefficient, wide temperature application range, good cycle characteristics and the like, and is widely applied to various electronic equipment. The lithium battery consists of a lithium battery core, a tab and a shell wrapping the lithium battery core, wherein the shell is formed by punching an aluminum plastic film.

The aluminum plastic film is punched into the shell which meets the specification and size requirements, and the shell is continuously cut one by one. The aluminum plastic film is a composite multi-layer material, and is different from a single material, a high-speed steel cutter is used in the prior art, the cutting service cycle is short, the edge of a knife is passivated and not sharp after the cutter is repeatedly used, the cut product is uneven in cut and provided with burrs, the burrs of the aluminum plastic film scratch the product in the packaging and formation operation of the production process, the battery core manufactured later is at safety risk, and the cutter is required to be stopped for replacement after the cutter is used for a long time, so that the production efficiency is greatly influenced.

Disclosure of Invention

The utility model aims to solve the technical problems of the prior art, and provides a cutting device and a cutting system for a battery aluminum plastic film, which can solve the problem that cut of a product cut after repeated use is uneven and has burrs.

The technical scheme adopted for solving the technical problems is as follows: the cutting device for the aluminum-plastic film of the battery comprises an upper cutting tool, wherein the upper cutting tool comprises an upper tool rest base and an upper cutter, the upper cutter is connected with the upper tool rest base, and a first cutter edge is arranged on one side of the upper cutter;

the lower cutter comprises a lower cutter frame base and a lower cutter, the lower cutter is connected with the lower cutter frame base, and a second cutter edge is arranged on one side of the lower cutter;

wherein, the materials of the upper cutter and the lower cutter are tungsten steel; the upper cutting tool and the lower cutting tool drive the upper cutting knife and the lower cutting knife to synchronously move in the opposite reciprocating motion process so as to complete the cutting of the aluminum-plastic film of the battery.

Still further preferred embodiments of the present utility model are: the length dimension of the upper cutter ranges from 250 mm to 290mm, and the cross section of the first cutter edge is an acute angle.

Still further preferred embodiments of the present utility model are: the size range of the lower cutter is 250-290mm, and the cross section of the second cutter edge is an acute angle.

Still further preferred embodiments of the present utility model are: the upper tool rest base and the lower tool rest base are made of steel materials.

Still further preferred embodiments of the present utility model are: the upper tool rest base and the lower tool rest base are made of high-speed steel.

Still further preferred embodiments of the present utility model are: the upper cutter rest base and the upper cutter comprise a first mounting structure for connection, the lower cutter rest base and the lower cutter comprise a second mounting structure for connection, and the first mounting structure and the second mounting structure are used for mounting the corresponding upper cutter and lower cutter;

the upper cutter rest base is a rectangular plate, and the upper cutters are symmetrically arranged on the upper side and the lower side of the upper cutter rest base through first mounting structures;

the lower cutter frame base is a concave plate, and the lower cutter is arranged on the upper concave surface of the lower cutter frame base through a second mounting structure.

Still further preferred embodiments of the present utility model are: the upper tool rest base is in welded connection with the upper cutter, and the lower tool rest base is in welded connection with the lower cutter.

The utility model also provides a cutting system which comprises a motion device and the cutting device of the battery aluminum-plastic film; the motion device comprises a locking mechanism, and the locking mechanism is connected with an upper tool rest base and a lower tool rest base.

Still further preferred embodiments of the present utility model are: four counter bores are formed in the front face of the upper tool rest base, four screw holes are formed in the top of the upper tool rest base, and the upper tool rest base is connected to the locking mechanism through external screws, the screw holes and the counter bores in a matched mode; two screw hole counter bores are formed in the top of the lower tool rest base, and the lower tool rest base is connected to the locking mechanism through an external screw in a matched mode with the screw hole and the counter bore

Still further preferred embodiments of the present utility model are: the motion device further comprises an up-and-down motion mechanism and a horizontal motion mechanism, wherein the up-and-down motion mechanism drives the locking mechanism to move up and down, and the locking mechanism drives the upper cutter and the lower cutter to be combined and cut;

and the horizontal moving mechanism drives the lithium battery aluminum-plastic film to move.

Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, the upper and lower cutter blades are made of tungsten steel sheets, and a series of excellent performances such as high hardness, high wear resistance, good strength and toughness, heat resistance, corrosion resistance and the like are utilized, so that the smooth and smooth cut, no scraps and burr-free blank front are realized after the aluminum plastic film is cut, the cutting cycle times are high, frequent machine halt and tool changing are not required in the production and use, the product quality is ensured, and the production efficiency is greatly improved.

Drawings

The utility model will be further described with reference to the accompanying drawings and examples, in which:

fig. 1 is a schematic structural view of a cutting device for an aluminum plastic film of a battery according to an embodiment of the utility model;

FIG. 2 is a schematic view of the structure of the cutter according to the embodiment of the present utility model;

FIG. 3 is a side view of a cutter according to an embodiment of the present utility model;

FIG. 4 is a schematic view of the structure of the lower cutter according to the embodiment of the present utility model;

Detailed Description

Preferred embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present utility model; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be the communication between the two parts. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 to 2, the present utility model provides an embodiment of a cutting device for an aluminum plastic film of a battery.

The cutting device for the aluminum-plastic film of the battery comprises an upper cutter 1, wherein the upper cutter 1 comprises an upper cutter rest base 11 and an upper cutter 12, the upper cutter 12 is connected with the upper cutter rest base 11, and a first cutter edge is arranged on one side of the upper cutter 12;

the lower cutter 2 comprises a lower cutter rest base 21 and a lower cutter 22, the lower cutter 22 is connected with the lower cutter rest base 21, and a second cutter edge is arranged on one side of the lower cutter;

wherein, the upper cutter 12 and the lower cutter 22 are made of tungsten steel; the upper cutting tool 1 reciprocates up and down and is folded and separated from the lower cutting tool 2, so that the cutting of the aluminum-plastic film of the battery is completed; the upper cutter 12 and the lower cutter 22 are made of tungsten steel, so that the cut of the aluminum plastic film after cutting is smooth, chipless, burr-free, high in cutting times, and capable of greatly improving the production efficiency by stopping machine and replacing the cutter frequently.

As shown in fig. 3 to 4, the present utility model provides a preferred embodiment of the upper cutter and the lower cutter.

The length dimension of the upper cutter 12 of the upper cutter 1 ranges from 250 mm to 290mm, preferably 270 x 20 x 3mm, the cross section of the first cutter edge is an acute angle, the length dimension of the lower cutter 22 of the lower cutter 2 ranges from 250 mm to 290mm, preferably 270 x 30 x 5mm, and the cross section of the second cutter edge is an acute angle.

In one embodiment, the upper blade carrier base 11 of the upper cutter 1 and the lower blade carrier base 21 of the lower cutter 2 are preferably steel, more preferably high speed steel; the use of high speed steel reduces the production cost and ensures the rigidity required for the operation of the upper tool holder base 11 and the lower tool holder base 21 because the machining process of tungsten steel is complicated and the cost is too high.

In one embodiment, two versions of the upper blade carrier base 11 and upper blade 12, lower blade carrier base 21 and lower blade 22 are provided.

The first scheme is that the upper cutter rest base 11 and the upper cutter 12 comprise first mounting structures for connection, the lower cutter rest base 21 and the lower cutter 22 comprise second mounting structures for connection, the first mounting structures and the second mounting structures are used for mounting the corresponding upper cutter 12 and lower cutter 22, the upper cutter rest base 11 is a rectangular plate, the upper cutter 12 is symmetrically arranged on the upper side and the lower side of the upper cutter rest base 11 through the first mounting structures, the lower cutter rest 21 base is a concave plate, and the lower cutter 22 is arranged on the upper concave surface of the lower cutter rest base 21 through the second mounting structures; the rectangular upper tool rest base 11 and the concave lower tool rest base 21 have better folding and cutting effects, and the cutting quality is improved.

In the scheme II, the upper cutter rest base 11 and the upper cutter 12 are in welded connection, the lower cutter rest base 21 and the lower cutter 22 are in welded connection, the stability between the cutter rest base and the cutters is guaranteed through welded connection, and the service life of the cutter rest base is prolonged.

The present utility model provides a preferred embodiment of a cutting system.

The cutting system comprises a movement device and the cutting device of the battery aluminum plastic film; the movement device comprises a locking mechanism, and the locking mechanism is connected with an upper tool rest base 11 and a lower tool rest base 21, so that the application range of the battery aluminum plastic film cutting device is enlarged, and the battery aluminum plastic film cutting device can be installed on other cutting systems or cutting instruments.

Specifically, the front surface of the upper tool rest base 11 is provided with four counter bores and the top is provided with four screw holes, and the upper tool rest base 11 is connected to the locking mechanism through the matching arrangement of external screws, the screw holes and the counter bores; two screw hole counter bores are formed in the top of the lower tool rest base 21, and the lower tool rest base 21 is connected to the locking mechanism through an external screw in a matched mode with the screw holes and the counter bores; the arrangement of the counter bore and the screw hole enables the upper tool rest base 11 and the lower tool rest base 21 to be mechanically connected to the locking mechanism, so that the disassembly and the replacement are convenient, and the machining efficiency is improved.

In one embodiment, the movement device further comprises an up-and-down movement mechanism and a horizontal movement mechanism, wherein the up-and-down movement mechanism drives the locking mechanism to move up and down, and the locking mechanism drives the upper cutter and the lower cutter to be combined and cut; the horizontal moving mechanism drives the lithium battery aluminum-plastic film to move; the up-down moving mechanism and the horizontal moving mechanism are mutually matched to work, so that the aluminum plastic films of lithium batteries with different sizes can be cut, and the working efficiency is improved.

The upper moving mechanism and the lower mechanism are matched to drive the upper cutter and the lower cutter to be combined and cut through the locking mechanism; or the upper moving mechanism drives the upper cutter to move downwards and acts on the lower cutter to realize the combined cutting.

It should be understood that the foregoing embodiments are merely illustrative of the technical solutions of the present utility model, and not limiting thereof, and that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art; all such modifications and substitutions are intended to be included within the scope of this disclosure as defined in the following claims.

Claims

1. Cutting device of battery plastic-aluminum membrane, its characterized in that includes:

the upper cutting tool comprises an upper tool rest base and an upper cutter, the upper cutter is connected with the upper tool rest base, and a first cutter edge is arranged on one side of the upper cutter;

2. The cutting device of claim 1, wherein: the length dimension of the upper cutter ranges from 250 mm to 290mm, and the cross section of the first cutter edge is an acute angle.

3. The cutting device of claim 2, wherein: the size range of the lower cutter is 250-290mm, and the cross section of the second cutter edge is an acute angle.

4. A cutting device according to any one of claims 1 to 3, wherein: the upper tool rest base and the lower tool rest base are made of steel materials.

5. The cutting device of claim 4, wherein: the upper tool rest base and the lower tool rest base are made of high-speed steel.

6. The cutting device of claim 1, wherein:

the upper cutter rest base and the upper cutter comprise a first mounting structure for connection, the lower cutter rest base and the lower cutter comprise a second mounting structure for connection, and the first mounting structure and the second mounting structure are used for mounting the corresponding upper cutter and lower cutter;

7. The cutting device of claim 6, wherein: the upper tool rest base is in welded connection with the upper cutter, and the lower tool rest base is in welded connection with the lower cutter.

8. A cutting system comprising a moving device and a cutting device for the battery plastic-aluminum film according to any one of claims 1 to 7; the motion device comprises a locking mechanism, and the locking mechanism is connected with an upper tool rest base and a lower tool rest base.

9. The cutting system of claim 8, wherein: four counter bores are formed in the front face of the upper tool rest base, four screw holes are formed in the top of the upper tool rest base, and the upper tool rest base is connected to the locking mechanism through external screws, the screw holes and the counter bores in a matched mode;

two screw hole counter bores are formed in the top of the lower tool rest base, and the lower tool rest base is connected to the locking mechanism through an external screw, the screw holes and the counter bores in a matched mode.

10. The cutting system of claim 8, wherein:

the motion device further comprises an up-and-down motion mechanism and a horizontal motion mechanism, wherein the up-and-down motion mechanism drives the locking mechanism to move up and down, and the locking mechanism drives the upper cutter and the lower cutter to be combined and cut;