Automatic splitting machine for lithium battery cell processing

Abstract

The utility model discloses an automatic splitting machine for lithium battery cell processing. The automatic splitting machine comprises a machine head, an unwinding roller rotationally connected to the front end of the machine head, a rear frame fixedly connected to the rear end of the machine head and a conveying belt arranged on the inner side of the rear frame. The rear frame, the conveying belt, the secondary slitting assembly and the like are directly arranged at the rear end of the machine head, and after a roll material on the unwinding roller enters the machine head to be primarily slit, a slit diaphragm strip directly enters the rear frame and is conveyed by the conveying belt; and a cutter on the secondary slitting assembly can simultaneously perform secondary slitting on all diaphragm strips on the conveying belt so as to form diaphragm pieces one by one, through the cooperation of the structures, on one hand, the diaphragm pieces subjected to primary slitting can be directly subjected to secondary slitting, the interval time is short, the flow is fast, and the efficiency is high. And secondly, secondary slitting can be synchronously carried out on all the diaphragm strips at the same time, the slitting efficiency is high, and diaphragm pieces can be rapidly produced in a large scale.

Description

Technical Field

[0001] This utility model belongs to the field of lithium battery processing technology, specifically relating to an automatic slitting machine for processing lithium battery cells. Background Technology

[0002] As a core component in the modern energy field, the processing quality of lithium batteries directly affects their performance and safety. A lithium battery cell is assembled from various materials, such as positive and negative electrode materials, a separator, and an electrolyte. The separator is located between the positive and negative electrodes, separating the active materials and preventing direct contact that could cause a short circuit. Separator raw materials are generally in roll form. During the cell assembly process, the separator roll needs to be slit into individual separator sheets that meet specific specifications. This requires a slitting machine. The slitting machine first unfolds the separator roll, then performs an initial slitting of the unfolded separator strips to form separator strips. These separator strips are then further slit to form the required separator sheets.

[0003] Existing slitting machines generally have complete primary slitting functions, but secondary slitting often requires additional cutting components. Furthermore, when performing secondary slitting, it is often inconvenient to accurately slit multiple separator strips simultaneously. Therefore, existing slitting machines have relatively low slitting efficiency in the slitting of lithium battery cell materials, which is not conducive to the rapid and large-scale production of separator sheets. Utility Model Content

[0004] The purpose of this invention is to provide an automatic slitting machine for processing lithium battery cells, so as to solve the problem of low slitting efficiency of existing slitting machines mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic slitting machine for processing lithium battery cells, comprising...

[0006] The machine head, the unwinding roller rotatably connected to the front end of the machine head, the rear frame fixedly connected to the rear end of the machine head, and the conveyor belt set inside the rear frame;

[0007] The secondary cutting assembly includes a movable frame slidably connected to the top of the rear frame, a connecting seat set on the bottom surface of the movable frame, a cutter connected to the bottom end of the connecting seat, and an oil pump fixed to the top surface of the movable frame with its output shaft fixedly connected to the connecting seat.

[0008] The sensing components include a mounting bracket fixed to the top of the rear end of the rear frame and a laser sensor connected to the bottom surface of the mounting bracket.

[0009] Preferably, the secondary cutting component further includes a pointer fixed to one side of the bottom of the movable frame and a scale line set on one side of the rear frame, the pointer pointing to the scale line.

[0010] Preferably, the secondary cutting assembly further includes a sliding groove formed on the top surface of the rear frame, and the two bottom ends of the movable frame are slidably connected to the sliding groove.

[0011] Preferably, a wire is connected between the oil pump and the laser sensor, and the wire is spiral-shaped.

[0012] Preferably, the conveyor belt includes a belt body and adsorption grooves evenly spaced on the surface of the belt body.

[0013] Preferably, an adsorption assembly is provided on the inner side of the rear frame inside the belt body. The adsorption assembly includes a fixing plate fixed between the inner sides of the rear frame, a vacuum pump fixed on the fixing plate, and a suction port provided on the top surface of the vacuum pump.

[0014] Preferably, the rear end of the rear frame is connected to a collection groove, and a docking component is provided between the rear end of the rear frame and the collection groove.

[0015] Preferably, the docking assembly includes limiting plates symmetrically fixed on both sides of the rear end of the rear frame, and rubber pads fixed on the inner wall of the limiting plates.

[0016] Preferably, a support roller is rotatably arranged between the die head and the unwinding roller, and a pressure roller is rotatably arranged between the die head and the conveyor belt.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] By directly installing components such as a rear frame, conveyor belt, and secondary slitting assembly at the rear end of the die head, after the roll material on the unwinding roller enters the die head and completes the initial slitting, the slit diaphragm strips directly enter the rear frame and are conveyed by the conveyor belt. The cutter on the secondary slitting assembly can simultaneously perform secondary slitting on all the diaphragm strips on the conveyor belt, thereby forming individual diaphragm sheets. Through the cooperation of the above structures, firstly, the diaphragms that have completed the initial slitting can be directly slitted again with a short interval and fast process; secondly, all the diaphragm strips can be simultaneously and synchronously slitted again, resulting in high slitting efficiency, which is conducive to the rapid and large-scale production of diaphragm sheets. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0020] Figure 2 This utility model Figure 1 Enlarged view of area A in the middle;

[0021] Figure 3This is a front sectional view of the secondary cutting component and the sensing component of this utility model;

[0022] Figure 4 This utility model Figure 1 Enlarged diagram of area B in the middle;

[0023] Figure 5 This is a top sectional view of the docking assembly 1000 of this utility model;

[0024] In the diagram: 100, machine head; 200, unwinding roller; 300, rear frame; 400, conveyor belt; 401, belt body; 402, adsorption tank; 500, secondary slitting assembly; 501, movable frame; 502, connecting seat; 503, cutter; 504, oil pump; 505, pointer; 506, scale line; 507, chute; 600, sensing assembly; 601, fixed frame; 602, laser sensor; 700, adsorption assembly; 701, fixed plate; 702, vacuum pump; 703, suction port; 800, wire; 900, collection tank; 1000, docking assembly; 1001, limit plate; 1002, rubber pad; 1100, idler roller; 1200, pressure roller. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example

[0027] Please see Figures 1 to 5 This embodiment provides a technical solution: an automatic slitting machine for processing lithium battery cells, comprising...

[0028] The machine head 100, the unwinding roller 200 rotatably connected to the front end of the machine head 100, the rear frame 300 fixedly connected to the rear end of the machine head 100, and the conveyor belt 400 set inside the rear frame 300 can install the roll material on the unwinding roller 200. After the device is started, the unwinding roller 200 unwinds the roll material, and the roll material unfolds and gradually enters the interior of the machine head 100. The interior of the machine head 100 is equipped with a slicing device, which can perform initial slicing of the roll material.

[0029] The secondary slitting assembly 500 includes a movable frame 501 slidably connected to the top of the rear frame 300, a connecting seat 502 disposed on the bottom surface of the movable frame 501, a cutter 503 connected to the bottom end of the connecting seat 502, and an oil pump 504 fixed to the top surface of the movable frame 501 with its output shaft fixedly connected to the connecting seat 502. The slid strips after slitting enter the conveyor belt 400 and are conveyed by the conveyor belt 400 to the bottom of the secondary slitting assembly 500. The oil pump 504 can push the cutter 503 downward, thereby cutting all the diaphragm strips simultaneously and synchronously. A high-precision position sensor is installed at the bottom of the cutter 503 to avoid damaging the conveyor belt 400 during slitting.

[0030] The sensing component 600 includes a mounting bracket 601 fixed to the top of the rear end of the rear frame 300 and a laser sensor 602 connected to the bottom surface of the mounting bracket 601. The laser sensor 602 is electrically connected to the oil pump 504. When the laser sensor 602 senses the diaphragm, the oil pump 504 pushes the cutter 503 downward to perform cutting. The electrical control between the laser sensor 602 and the oil pump 504 can be realized by a programmable logic controller.

[0031] In this embodiment, preferably, the secondary cutting component 500 further includes a pointer 505 fixed to one side of the bottom of the movable frame 501 and a scale line 506 set on one side of the rear frame 300. The pointer 505 points to the scale line 506. The distance between the secondary cutting component 500 and the sensing component 600 is adjusted by the pointer 505 and the scale line 506. The scale line 506 can be preset with a certain error compensation to avoid cutting errors caused by the continued movement of the conveyor belt 400 during the descent of the cutter 503.

[0032] In this embodiment, preferably, the secondary cutting component 500 further includes a sliding groove 507 formed on the top surface of the rear frame 300. The two bottom ends of the movable frame 501 are slidably connected to the sliding groove 507 to complete the sliding connection between the movable frame 501 and the rear frame 300. A linear motor can be installed between the bottom end of the movable frame 501 and the sliding groove 507 to drive the movable frame 501 to move.

[0033] In this embodiment, preferably, a wire 800 is connected between the oil pump 504 and the laser sensor 602. The wire 800 is spiral-shaped, allowing it to extend and retract to accommodate the movement of the movable frame 501.

[0034] In this embodiment, preferably, the conveyor belt 400 includes a belt body 401 and adsorption grooves 402 evenly spaced on the surface of the belt body 401. An adsorption assembly 700 is provided inside the belt body 401 on the inner side of the rear frame 300. The adsorption assembly 700 includes a fixing plate 701 fixed between the inner sides of the rear frame 300, a vacuum pump 702 fixed on the fixing plate 701, and a suction port 703 provided on the top surface of the vacuum pump 702. When the belt body 401 conveys the diaphragm, the vacuum pump 702 generates suction and forms a negative pressure at the adsorption grooves 402, thereby adsorbing the diaphragm onto the surface of the belt body 401 and preventing the diaphragm from shifting position during cutting and conveying.

[0035] In this embodiment, preferably, the rear end of the rear frame 300 is connected to a collection groove 900. After the diaphragm is cut, it falls into the collection groove 900 for collection. A docking component 1000 is provided between the rear end of the rear frame 300 and the collection groove 900 to limit the position of the collection groove 900.

[0036] In this embodiment, preferably, the docking assembly 1000 includes limiting plates 1001 symmetrically fixed on both sides of the tail end of the rear frame 300, and rubber pads 1002 fixed on the inner wall of the limiting plates 1001. One end of the collection groove 900 can be pushed between the limiting plates 1001 on both sides, and the rubber pads 1002 can squeeze the two sides of the collection groove 900 to a certain extent, thereby limiting the collection groove 900.

[0037] In this embodiment, preferably, a support roller 1100 is rotatably arranged between the die head 100 and the unwinding roller 200, and a pressure roller 1200 is rotatably arranged between the die head 100 and the conveyor belt 400. Both the support roller 1100 and the pressure roller 1200 can improve the stability and flatness of the diaphragm during the conveying process.

[0038] Working Principle: When using this slitting machine, the roll material is first loaded onto the unwinding roller 200. Then, the device is started, and the roll material on the unwinding roller 200 is gradually unwound. The unwound diaphragm enters the interior of the die head 100, where slicers are installed to perform initial slitting of the diaphragm, forming individual diaphragm strips. These diaphragm strips are conveyed out from the die head 100 and fall onto the conveyor belt 400 for further conveying. The diaphragm strips pass through the secondary slitting assembly 500 until they reach directly below the sensing assembly 600. At this point, the laser sensor 602 senses the diaphragm strip below and, through electrical control, moves the cutter 503 downwards, thereby... All the diaphragm belts below are simultaneously and synchronously cut into individual diaphragm sheets. These diaphragm sheets are then conveyed and eventually fall into the collection tank 900, completing the collection of the diaphragm sheets. During the conveyor belt 400's transport of the diaphragms, the adsorption component 700 generates suction, creating a negative pressure at the adsorption tank 402 on the belt body 401, thereby adsorbing the diaphragms on the belt body 401 and preventing the diaphragms from shifting position during cutting and conveying. The distance between the secondary cutting component 500 and the sensing component 600 can be adjusted to meet the size requirements of the diaphragm sheets.

[0039] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic slitting machine for processing lithium battery cells, characterized by: Comprising The head (100), the unwinding roller (200) rotatably connected to the front end of the head (100), the rear frame (300) fixedly connected to the rear end of the head (100), the conveying belt (400) arranged inside the rear frame (300); The secondary cutting assembly (500) comprises a movable frame (501) slidably connected to the top of the rear frame (300), a connecting seat (502) arranged on the bottom surface of the movable frame (501), a cutter (503) connected to the bottom end of the connecting seat (502), and an oil pump (504) fixed to the top surface of the movable frame (501) and having an output shaft fixedly connected to the connecting seat (502). The induction assembly (600) comprises a fixed frame (601) fixed to the top of the tail end of the rear frame (300), and a laser inductor (602) connected to the bottom surface of the fixed frame (601).

2. The automatic slitting machine for processing lithium battery cells according to claim 1, characterized in that: The secondary cutting assembly (500) further comprises a pointer (505) fixed to one side of the bottom end of the movable frame (501), and a scale line (506) arranged on the surface of one side of the rear frame (300), and the pointer (505) points to the scale line (506).

3. The automatic slitting machine for processing lithium battery cells according to claim 2, characterized in that: The secondary cutting assembly (500) further comprises a sliding groove (507) opened on the top surface of the rear frame (300), and the two bottom ends of the movable frame (501) are slidably connected to the sliding groove (507).

4. The automatic slitting machine for processing lithium battery cells according to claim 3, characterized in that: The oil pump (504) and the laser inductor (602) are connected by a wire (800), and the wire (800) is in a spiral shape.

5. The automatic slitting machine for processing lithium battery cells according to claim 4, characterized in that: The conveying belt (400) comprises a belt body (401) and a plurality of adsorption grooves (402) equidistantly arranged on the surface of the belt body (401).

6. The automatic slitting machine for processing lithium battery cells according to claim 5, characterized in that: The inner side of the rear frame (300) is provided with an adsorption assembly (700) inside the belt body (401), and the adsorption assembly (700) comprises a fixed plate (701) fixed between the inner sides of the rear frame (300), a vacuum pump (702) fixed on the fixed plate (701), and a suction port (703) arranged on the top surface of the vacuum pump (702).

7. The automatic slitting machine for processing lithium battery cells according to claim 6, characterized in that: The tail end of the rear frame (300) is connected with a collecting groove (900), and the tail end of the rear frame (300) and the collecting groove (900) are provided with a docking assembly (1000).

8. The automatic slitting machine for processing lithium battery cells according to claim 7, characterized in that: The docking assembly (1000) comprises a limiting plate (1001) symmetrically fixed to the two sides of the tail end of the rear frame (300), and a rubber pad (1002) fixed to the inner wall of the limiting plate (1001).

9. The automatic slitting machine for processing lithium battery cells according to claim 8, characterized in that: The head (100) and the unwinding roller (200) are rotatably provided with a carrier roller (1100), and the head (100) and the conveying belt (400) are rotatably provided with a pressure roller (1200).

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