Cutting device for lithium battery pole piece production and using method

Abstract

The invention discloses a cutting device for lithium battery pole piece production and a using method. The cutting device comprises a blanking assembly and a limiting assembly which are installed on a rack. The blanking assembly comprises a supporting arm, the middle of the supporting arm is rotationally installed on the rack, one end of the supporting arm is connected with a transmission piece, and a cutting tool is installed at the other end of the supporting arm. The cutting tool is matched with a blanking seat mounted on the rack to cut the pole piece; the limiting assembly comprises a movable frame, a fixed frame and an elastic pressing piece, the lithium battery pole piece to be cut is arranged between the movable frame and the fixed frame to be positioned in the horizontal direction, and the elastic pressing piece is pressed on the upper surface of the lithium battery pole piece to be cut to be positioned in the vertical direction; according to the lithium battery pole piece cutting device, continuous cutting of the lithium battery pole piece is achieved by combining motor driving with the structural characteristics of the cam and the lever effect of the supporting arm, then the automatic and high-speed cutting process is achieved, the cutting speed of the lithium battery pole piece can be remarkably increased, and therefore the yield in unit time is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery pole piece cutting devices, and in particular to a cutting device for lithium battery pole piece production and a use method thereof. Background Art

[0002] With the rapid development of new energy vehicles and energy storage markets, the demand for lithium batteries has increased dramatically, which has put forward higher requirements for the production process of lithium batteries. The pole piece is the core and important part of the battery, which is divided into positive pole piece and negative pole piece, and mainly plays the role of conductivity. During the production process, the finished pole piece is often in sheet form. In order to meet the actual use requirements, the pole piece will be cut into various shapes of different sizes. The preparation of lithium battery pole pieces is one of the key steps in battery assembly.

[0003] The traditional lithium battery pole piece cutting process mostly uses manual or semi-automatic equipment, which has many shortcomings: traditional equipment usually relies on manual operation, which is not only slow, but also difficult to achieve continuous operation, limiting the scale and efficiency of production; due to a large number of manual participation, workers need to stand for a long time and repeat the same action, which is easy to cause physical fatigue and increase the workload; manual cutting or simple mechanical cutting often cannot guarantee the consistency of pole piece size and the smoothness of the edge, which may affect the battery performance; for lithium battery pole pieces of different specifications, different tools need to be replaced and settings adjusted, which is less flexible and cannot quickly adapt to changes on the production line. In addition, since the pole piece body is relatively soft, it is easy to deviate during transportation, and the fixation is not thorough enough during cutting, which is easy to pull the pole piece body, affecting the cutting effect. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a cutting device and a method for using lithium battery pole pieces for production, which can improve the production efficiency of lithium battery pole piece cutting, while reducing the labor intensity of staff and meeting the stable cutting requirements of lithium battery pole pieces of different sizes.

[0005] The technical solution of the present invention is as follows:

[0006] In the first aspect of the present invention, a cutting device for producing lithium battery pole pieces is provided, comprising a punching assembly and a limiting assembly mounted on a frame; the punching assembly comprises a support arm, the middle part of which is rotatably mounted on the frame, one end of the support arm is connected to a transmission member, and the other end is mounted with a cutting tool; the cutting tool cooperates with a punching seat mounted on the frame to cut the pole piece; the limiting assembly comprises a movable frame, a fixed frame and an elastic pressing sheet, the lithium battery pole piece to be cut is placed between the movable frame and the fixed frame for horizontal positioning, and the elastic pressing sheet is pressed on the upper surface of the lithium battery pole piece to be cut for vertical positioning.

[0007] In some embodiments of the present invention, the transmission member is a plate structure for mounting the end of the support arm, the lower end of the plate is trapezoidal and contacts the cam, and the cam is rotated by a belt, a pulley and a reducer.

[0008] In some embodiments of the present invention, an ear seat is installed at a position near the bottom of the support arm close to the transmission member, and the ear seat is connected to the frame through a spring.

[0009] In some embodiments of the present invention, a branch is fixedly installed at a position of the support arm close to the cutting tool, and the branch is L-shaped, with one end of the branch fixedly connected to the support arm and the other end fixedly connected to the limiting rod seat.

[0010] In some embodiments of the present invention, a limiting rod is rotatably installed in the limiting rod seat, and a disc is fixedly installed at one end of the limiting rod close to the cutting position, and the end surface of the disc limits the end of the lithium battery to be cut.

[0011] In some embodiments of the present invention, the movable frame and the fixed frame are mounted on the processing platform and are arranged in parallel, and the position between the movable frame and the fixed frame is a space for placing the lithium battery.

[0012] In some embodiments of the present invention, a connecting seat is fixed to the outer side of the movable frame, and the connecting seat cooperates with a slide groove provided on the processing platform. A fixed seat is provided at the end of the slide groove, and the fixed seat and the connecting seat are connected by an elastic member.

[0013] In some embodiments of the present invention, the elastic pressing sheet is embedded in the inner side surface of the movable frame, the elastic pressing sheet is made of elastic material, and a plurality of the elastic pressing sheets are arranged at intervals.

[0014] In some embodiments of the present invention, an inclined plate is provided at the cutting outlet of the cutting tool and the punching seat, and the bottom end of the inclined plate is connected to the inlet of the collecting material pipe.

[0015] In a second aspect of the present invention, a method for using a cutting device for producing lithium battery pole pieces is provided, comprising the following steps:

[0016] The lithium battery pole piece to be cut is placed between the movable frame and the fixed frame, and the position of the movable frame is adjusted according to the width of the lithium battery pole piece to be cut to perform horizontal positioning; the upper surface of the lithium battery pole piece to be cut is pressed by an elastic pressing sheet to perform vertical positioning, and the elastic pressing sheet can adapt to lithium battery pole pieces to be cut with different thicknesses, and the lithium battery pole piece to be cut is accurately positioned through the cooperation between the movable frame, the fixed frame and the elastic pressing sheet;

[0017] Under the action of external drive, the lithium battery pole piece to be cut moves along the direction of the fixed frame, continuously contacts with the punching component and completes the cutting;

[0018] The cut pole piece monomers fall to the inclined plate under the action of gravity, completing the collection of the lithium battery pole piece monomers.

[0019] One or more technical solutions of the present invention have the following beneficial effects:

[0020] (1) The cutting device for producing lithium battery pole pieces of the present invention realizes continuous cutting of lithium battery pole pieces through motor drive combined with the structural characteristics of the cam and the lever action of the support arm, thereby realizing an automated and high-speed cutting process. Compared with traditional manual or semi-automatic equipment, it can significantly improve the cutting speed of lithium battery pole pieces, thereby increasing the output per unit time.

[0021] (2) The cutting device for producing lithium battery pole pieces of the present invention realizes horizontal positioning of the lithium battery pole pieces through the movable frame and the fixed frame in the limiting assembly, and realizes vertical positioning of the lithium battery pole pieces through the elastic pressing plate, thereby ensuring that no movement occurs during the cutting process, thereby improving the cutting efficiency and cutting quality of the pole pieces; since the movable frame can adjust the width of the lithium battery pole pieces, the elastic pressing plate can adapt to pole pieces of different thicknesses, thereby improving the scope of application of the device and being able to cope with diverse needs without the need to configure equipment separately for each specification.

[0022] (3) The cutting device for producing lithium battery pole pieces of the present invention can realize the cutting of pole pieces of different specifications by setting a limit rod and a disc. The distance between the disc on the limit rod and the cutting position is adjusted according to the length of the pole piece to be cut. There is no need to frequently change the tool or adjust the positioning, which can greatly reduce the physical labor of the staff and reduce the possibility of human error.

[0023] (4) The cutting device for producing lithium battery pole pieces of the present invention uses a special guiding structure (inclined plate + collecting material tube) to guide the cut battery pole pieces to fall accurately into the specified position, thereby ensuring the orderliness and safety of the material flow process; in addition, the spring return mechanism also helps to maintain the stable operation state of the entire system. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the cutting device for producing lithium battery pole pieces of the present invention;

[0025] Figure 2 It is a structural schematic diagram of the limiting assembly of the cutting device for producing lithium battery pole pieces of the present invention;

[0026] Figure 3 It is a schematic diagram of the overall structure bottom of the cutting device for producing lithium battery pole pieces of the present invention;

[0027] Figure 4It is a schematic diagram of the structure of the punching assembly in the cutting device for producing lithium battery pole pieces of the present invention.

[0028] In the figure: 100, installation assembly; 101, frame; 102, panel; 103, processing platform; 104, inclined plate; 105, collecting material pipe; 106, installation plate;

[0029] 200, blanking assembly; 201, motor; 202, pulley; 203, belt; 204, reducer; 205, cam; 206, transmission member; 207, bearing seat; 208, support arm; 209, ear seat; 210, spring; 211, shaft; 212, branch; 213, limit rod; 214, cutting tool; 215, blanking seat;

[0030] 300, limit assembly; 301, movable frame; 302, fixed frame; 303, elastic pressing piece; 304, connecting seat; 305, fixed seat. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0032] Example 1

[0033] In a typical embodiment of the present invention, a cutting device for producing lithium battery pole pieces is provided, such as Figure 1-Figure 4 As shown, it includes an installation component 100, a punching component 200 and a limiting component 300; wherein the installation component 100 is used to realize the installation of the punching component 200 and the limiting component 300 and provide support for them; the punching component 200 is used to realize the cutting of lithium battery pole pieces; the limiting component 300 is used to realize the fixation of the lithium battery pole pieces to be cut.

[0034] Specifically, the installation assembly 100 includes:

[0035] The frame 101 is used to support the entire device and is assembled by splicing multiple profiles and fixed to the external mounting surface via fasteners.

[0036] Panel 102 is fixed to the upper end of the frame 101 to form a support surface for mounting and fixing the processing platform 103.

[0037] The inclined plate 104 is fixed to the side of the panel 102 and is used to guide the cut battery pole pieces. A collecting material tube 105 is fixed to its lower end. The cut battery pole piece monomers fall into an external collecting device under the guidance of the inclined plate 104 and the collecting material tube 105 under the action of gravity.

[0038] The mounting plate 106 is fixed to the edge of the vertical beam of the frame 101 and is used for mounting the motor in the punching assembly.

[0039] The punching assembly 200 and the limiting assembly 300 are both installed on the frame 101 of the mounting assembly 100 .

[0040] Specifically, the punching assembly 200 includes a support arm 208, the middle part of which is rotatably mounted on the frame 101 through a bearing seat 207, one end of the support arm 208 is connected to the transmission member 206, and the other end is installed with a cutting tool 214; the cutting tool 214 cooperates with a punching seat 215 installed on the frame 101 to cut the pole piece; the limiting assembly 300 includes a movable frame 301, a fixed frame 302 and an elastic pressing sheet 303, the lithium battery pole piece to be cut is placed between the movable frame 301 and the fixed frame 302 for horizontal positioning, and the elastic pressing sheet 303 is pressed on the upper surface of the lithium battery pole piece to be cut for vertical positioning, and the punching assembly 200 and the limiting assembly 300 cooperate with each other to continuously and stably complete the cutting of the lithium battery pole piece.

[0041] In this embodiment, the transmission member 206 is a plate structure for mounting the end of the support arm 208. The lower end of the plate is trapezoidal and contacts the cam 205. The cam 205 is driven to rotate by the belt 203, the pulley 202 and the reducer 204. The motor 201 is fixed on the mounting plate 106. The output shaft of the motor is fixed with the pulley 202. The pulley 202 is connected to the reducer 204 through the belt 203. The cam 205 is connected to the output shaft of the reducer 204. Since the cam 205 is in contact with the lower end of the transmission member 206, when the cam 205 rotates, the driving member 206 drives the end of the support arm 208 to move up and down. The middle part of the support arm 208 is connected to the bearing seat on the frame 101 through the shaft 211. When one end of the support arm provided with the transmission member 206 moves up and down, according to the principle of lever, one end of the support arm provided with the cutting tool 214 will also move up and down accordingly, thereby realizing the cutting process.

[0042] Furthermore, an ear seat 209 is installed at the bottom of the support arm 208 near the transmission member 206, and the ear seat 209 is connected to the frame 101 through a spring 210. The spring 210 is used to reset the support arm 208, thereby realizing the continuous cutting process.

[0043] Furthermore, a branch 212 is fixedly installed at a position of the support arm 208 near the cutting tool 214. The branch 212 is L-shaped, one end of the branch 212 is fixedly connected to the support arm 208, and the other end is fixedly connected to the limit rod seat. A limit rod 213 is rotatably installed in the limit rod seat, and a disc is fixedly installed at one end of the limit rod 213 near the cutting position, and the end surface of the disc limits the end of the lithium battery to be cut. Specifically, the limit rod 213 is connected to the limit rod seat by a thread, so that the distance between the disc and the cutting position can be adjusted by the thread to achieve the cutting of pole pieces of different lengths.

[0044] In this embodiment, the movable frame 301 and the fixed frame 302 are installed on the processing platform 103 and are arranged in parallel, and the position between the movable frame 301 and the fixed frame 302 is a space for placing lithium batteries.

[0045] Furthermore, a connecting seat 304 is fixed on the outer side of the movable frame 301, and the connecting seat 304 cooperates with the slide groove provided on the processing platform 103. A fixing seat 305 is provided at the end of the slide groove, and the fixing seat 305 is connected to the connecting seat 304 through an elastic member. Specifically, the elastic member can be a spring, and under the action of the spring, it can be ensured that the inner side of the movable frame 301 is always against the side of the lithium battery pole piece to be cut, thereby realizing the horizontal limit of the lithium battery pole piece, and at the same time, it can realize the positioning of lithium battery pole pieces of different widths. At least two slide grooves are provided, and each slide groove is provided with a corresponding fixing seat, a connecting seat and an elastic member, so as to ensure that the inner side of the movable frame can be against the side of the lithium battery pole piece.

[0046] In this embodiment, the elastic pressing sheet 303 is embedded in the inner side surface of the movable frame 301. The elastic pressing sheet 303 is made of elastic material. Multiple elastic pressing sheets 303 are arranged at intervals. The lower surface of the elastic pressing sheet 303 is pressed tightly against the upper surface of the lithium battery pole piece to achieve positioning of lithium battery pole pieces of different heights.

[0047] The working principle of the cutting device for lithium battery pole piece production provided in this embodiment is as follows:

[0048] The movable frame 301 and the fixed frame 302 of the limit assembly 300 position the width direction of the lithium battery pole piece to be cut, and the elastic pressing plate 303 is used to position the height direction of the lithium battery pole piece to be cut; the movable frame 301 can be adjusted according to the width of the lithium battery pole piece under the action of the elastic member, and the elasticity of the elastic pressing plate 303 is used to press the lithium battery pole pieces of different thicknesses; the cam 205 rotates under the drive of the motor and the reducer. Since the cam 205 is in contact with the lower end of the transmission member 206, when the cam 205 rotates, the position of the shaft 211 set by the support arm 208 rotates by utilizing the structural characteristics of the cam 205, thereby realizing the cutting process, and at the same time, under the action of the spring 210, the support arm 208 is reset, thereby realizing the continuous cutting process. The distance between the disc on the limit rod 213 and the cutting position can be adjusted according to the length of the pole piece to be cut, so as to realize the cutting of pole pieces of different specifications.

[0049] When in use, the strip-shaped lithium battery pole piece is placed between the fixed frame and the movable frame, and is kept in a stable position under the action of the elastic pressing sheet and the horizontal limit system. At the same time, under the action of external drive (manually or using the existing automatic feeding structure), it moves along the fixed frame, continuously contacts the punching component and completes the cutting. The cut pole piece monomer falls to the inclined plate under the action of gravity, completing the collection of the lithium battery pole piece monomer.

[0050] Example 2

[0051] In a typical embodiment of the present invention, a method for using a cutting device for producing lithium battery pole pieces is provided, comprising the following steps:

[0052] The lithium battery pole piece to be cut is placed between the movable frame and the fixed frame, and the position of the movable frame is adjusted according to the width of the lithium battery pole piece to be cut to perform horizontal positioning; the upper surface of the lithium battery pole piece to be cut is pressed by an elastic pressing sheet to perform vertical positioning, and the elastic pressing sheet can adapt to lithium battery pole pieces to be cut with different thicknesses, and the lithium battery pole piece to be cut is accurately positioned through the cooperation between the movable frame, the fixed frame and the elastic pressing sheet;

[0053] Under the action of external drive, the lithium battery pole piece to be cut moves along the direction of the fixed frame, continuously contacts with the punching component and completes the cutting;

[0054] The cut pole piece monomers fall to the inclined plate under the action of gravity, completing the collection of the lithium battery pole piece monomers.

[0055] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the scope of protection of the present invention.

Claims

1. A cutting device for producing lithium battery pole pieces, characterized in that: It includes a punching assembly and a limiting assembly installed on a frame; the punching assembly includes a support arm, the middle part of which is rotatably installed on the frame, one end of the support arm is connected to a transmission member, and the other end is installed with a cutting tool; the cutting tool cooperates with a punching seat installed on the frame to cut the pole piece; the limiting assembly includes a movable frame, a fixed frame and an elastic pressing sheet, the lithium battery pole piece to be cut is placed between the movable frame and the fixed frame for horizontal positioning, and the elastic pressing sheet is pressed on the upper surface of the lithium battery pole piece to be cut for vertical positioning.

2. The cutting device for producing lithium battery pole pieces according to claim 1, characterized in that: The transmission member is a plate structure for mounting the end of the support arm. The lower end of the plate is trapezoidal and contacts the cam. The cam is rotated by a belt, a pulley and a reducer.

3. The cutting device for producing lithium battery pole pieces according to claim 1, characterized in that: An ear seat is installed at a position near the transmission member at the bottom of the support arm, and the ear seat is connected to the frame through a spring.

4. The cutting device for producing lithium battery pole pieces according to claim 1, characterized in that: A branch is fixedly installed at a position of the support arm close to the cutting tool, and the branch is L-shaped, one end of the branch is fixedly connected to the support arm, and the other end is fixedly connected to the limiting rod seat.

5. The cutting device for producing lithium battery pole pieces according to claim 4, characterized in that: A limiting rod is rotatably installed in the limiting rod seat, and a disc is fixedly installed at one end of the limiting rod close to the cutting position, and the end surface of the disc limits the end of the lithium battery to be cut.

6. The cutting device for producing lithium battery pole pieces according to claim 1, characterized in that: The movable frame and the fixed frame are installed on the processing platform and are arranged in parallel, and the position between the movable frame and the fixed frame is a lithium battery placement space.

7. The cutting device for producing lithium battery pole pieces according to claim 6, characterized in that: A connecting seat is fixed on the outer side of the movable frame, and the connecting seat matches with a slide groove provided on the processing platform. A fixing seat is arranged at the end of the slide groove, and the fixing seat and the connecting seat are connected via an elastic member.

8. The cutting device for producing lithium battery pole pieces according to claim 1, characterized in that: The elastic pressing sheet is embedded in the inner side surface of the movable frame, the elastic pressing sheet is made of elastic material, and a plurality of the elastic pressing sheets are arranged at intervals.

9. The cutting device for producing lithium battery pole pieces according to claim 1, characterized in that: An inclined plate is arranged at the cutting outlet of the cutting tool and the punching seat, and the bottom end of the inclined plate is connected to the inlet of the collecting material pipe.

10. A method for using the cutting device for producing lithium battery pole pieces according to any one of claims 1 to 9, characterized in that: The following steps are involved: The lithium battery pole piece to be cut is placed between the movable frame and the fixed frame, and the position of the movable frame is adjusted according to the width of the lithium battery pole piece to be cut to perform horizontal positioning; the upper surface of the lithium battery pole piece to be cut is pressed by an elastic pressing sheet to perform vertical positioning, and the elastic pressing sheet can adapt to lithium battery pole pieces to be cut with different thicknesses, and the lithium battery pole piece to be cut is accurately positioned through the cooperation between the movable frame, the fixed frame and the elastic pressing sheet; Under the action of external drive, the lithium battery pole piece to be cut moves along the direction of the fixed frame, continuously contacts with the punching component and completes the cutting; The cut pole piece monomers fall to the inclined plate under the action of gravity, completing the collection of the lithium battery pole piece monomers.

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