Slitting and edge material collecting device for lithium battery diaphragm

Abstract

The utility model discloses a lithium battery diaphragm slitting and scrap edge collecting device which comprises a rack and a supporting rod arranged on the rack, a plurality of sets of independent arms are installed on the supporting rod, scrap edge collecting mechanisms are installed on two sets of independent arms with the farthest relative distance, and scrap edge collecting mechanisms are installed on two sets of independent arms with the farthest relative distance. The rim charge collecting mechanism comprises a main body roller frame and a movable side plate arranged on the main body roller frame, and the main body roller frame is movably connected with the movable side plate. The diaphragm rim charge collecting mechanism is simple in structure, the movable side plate is arranged on the main body roller frame, after the winding diameter of diaphragm rim charges reaches a state needing to be replaced, the rim charge collecting mechanism is dismounted from the independent arm, and the position of the movable side plate on the main body roller frame is moved; the diaphragm offcut tightened on the movable side plate originally is loosened and separated from the offcut collecting device, the movable side plate is fixed to the original position to be reused after separation, and the efficiency of separating the diaphragm offcut from the offcut collecting device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery manufacturing, in particular to a lithium battery diaphragm cutting and edge collecting device. Background Art

[0002] Lithium-ion battery separator is the main component of lithium-ion battery. Its main function is to separate the positive and negative electrodes of the battery to prevent the two electrodes from contacting and short-circuiting. In addition, it also has the function of allowing electrolyte ions to pass through. In the existing lithium-ion battery manufacturing process, the separator used is basically a large mother roll cut into the required width by a slitting machine to facilitate the subsequent preparation of battery cells. When the separator is cut, separator edge material will be produced.

[0003] Traditional edge material removal devices usually use rollers to wind the diaphragm edge material, but during the winding process, the diaphragm edge material is in a tight state and is wound around the roller surface, making it difficult to separate the two. Workers are required to use a blade to cut the diaphragm edge material to facilitate separation of the two. However, the use of the blade will not only increase the risk of use for workers but also cause certain damage to the edge material removal device, and the separation efficiency is also low. In this regard, a lithium battery diaphragm edge material cutting and collecting device is proposed. Utility Model Content

[0004] The utility model aims to provide a lithium battery separator slitting and edge trimming device to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lithium battery diaphragm slitting and edge material collection device, comprising a frame and a support rod arranged on the frame, a plurality of independent arms are installed on the support rod, and two groups of independent arms with the farthest relative distance are installed with edge material collection mechanisms, the edge material collection mechanism comprises a main roller frame and a movable side plate arranged on the main roller frame, and the main roller frame is movably connected to the movable side plate.

[0006] As a further solution of the utility model: a winding roller is installed at the end of the independent arm located between the two groups of independent arms with the farthest relative distance.

[0007] As a further solution of the utility model: an assembly hole adapted to the independent arm is provided on the end surface of the main roller frame.

[0008] As a further solution of the utility model: the movable side plate is connected to the main roller frame via a fastener.

[0009] As a further solution of the utility model: the fastener comprises a fixing screw, the end of which passes through the movable side plate and is threadedly connected to the inner side wall of the main roller frame.

[0010] As a further solution of the utility model: the fastener includes a limit rod whose end is connected to the inner wall of the movable side plate, the end of the limit rod away from the movable side plate is penetrated into the interior of the assembly hole and a limit block is installed, and the outer peripheral surface of the limit rod is sleeved with a spring whose ends are respectively connected to the main roller frame and the inner wall of the assembly hole.

[0011] Compared with the prior art, the beneficial effect of the utility model is as follows: by arranging a movable side plate on the main roller frame, after the winding diameter of the diaphragm edge material reaches the state requiring replacement, the edge material collecting mechanism is removed from the independent arm, and the position of the movable side plate on the main roller frame is moved, so that the diaphragm edge material originally stretched on the movable side plate is loosened and separated from the edge material collecting device. After separation, the movable side plate is fixed back to the original position for reuse, thereby improving the efficiency of separating the diaphragm edge material from the edge material collecting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the edge material collection mechanism of the utility model;

[0014] Figure 3 It is a schematic diagram of another embodiment of the edge material collecting mechanism of the utility model;

[0015] In the figure: 1. frame; 2. support rod; 3. independent arm; 4. edge material collecting mechanism; 41. main roller frame; 42. assembly hole; 43. movable side plate; 44. fixing screw; 45. limit rod; 46. spring; 5. winding roller. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-3 In an embodiment of the utility model, a lithium battery diaphragm slitting and edge material collecting device includes a frame 1 and a support rod 2 arranged on the frame 1, and multiple groups of independent arms 3 are installed on the support rod 2, wherein two groups of independent arms 3 with the farthest relative distance are installed with edge material collecting mechanisms 4, and the edge material collecting mechanism 4 includes a main roller frame 41 and a movable side plate 43 arranged on the main roller frame 41, and the main roller frame 41 and the movable side plate 43 form a movable connection.

[0018] Specifically, two support rods 2 for fixing multiple groups of independent arms 3 are installed on the frame 1 to provide support for the multiple groups of independent arms 3. The edge material collecting mechanism 4 installed on the two outermost groups of independent arms 3 can collect and process the excess edge materials after slitting. At the same time, the movable side plate 43 can be separated from the main roller frame 41. After the winding diameter of the edge material reaches the state requiring replacement, the edge material collecting mechanism 4 is removed from the independent arm 3, and the position of the movable side plate 43 is moved. The diaphragm edge material originally tightened on the movable side plate 43 loosens and falls off from the edge material collecting device. After separation, the movable side plate 43 is fixed back to the original position for reuse. The connection method between the main roller frame 41 and the movable side plate 43 can be a magnetic connection, or it can be other conventional connection methods with the same magnetic effect.

[0019] See also Figure 1 In one embodiment, in this embodiment, preferably, a winding roller 5 is installed at the end of the independent arm 3 located between the two groups of independent arms 3 with the farthest relative distance. Furthermore, through the setting of the winding roller 5, the slit diaphragm can be rolled up for subsequent use.

[0020] See also Figure 2 and Figure 3 In one embodiment, in this embodiment, preferably, an assembly hole 42 adapted to the independent arm 3 is opened on the end face of the main roller frame 41. Furthermore, in order to better fix the main roller frame 41 on the independent arm 3 and drive it to rotate, an assembly hole 42 adapted to the independent arm 3 is opened on its end face, which facilitates the assembly of the independent arm 3 and the edge material collection mechanism 4 together.

[0021] Please refer to the figure Figure 2 and Figure 3 In one embodiment, in this embodiment, preferably, the movable side plate 43 is connected to the main roller frame 41 by fasteners.

[0022] See also Figure 2 In one embodiment, in this embodiment, preferably, the fastener includes a fixing screw 44, the end of which passes through the movable side plate 43 and is threadedly connected to the inner wall of the main roller frame 41, and the surface of the movable side plate 43 is provided with a strip groove for the fixing screw 44 to pass through, so as to ensure that the movable side plate 43 can be smoothly adjusted up and down.

[0023] Specifically, the height of the movable side plate 43 is adjusted by rotating the fixing screw 44, and the diaphragm edge material is wound around its surface by rotating the edge material collecting mechanism 4. After the winding diameter reaches the state requiring replacement, the edge material collecting mechanism 4 is removed from the independent arm 3, and the fixing screw 44 is loosened. The movable side plate 43 can move up and down, and the diaphragm edge material originally tightened on the movable side plate 43 is loosened and separated from the edge material collecting mechanism 4. After separation, the movable side plate 43 is fixed to the main roller frame 41 by the fixing screw 44 and reused.

[0024] See also Figure 3 In another embodiment, in this embodiment, preferably, the fastener includes a limit rod 45 whose end is connected to the inner wall of the movable side plate 43, and the end of the limit rod 45 away from the movable side plate 43 is penetrated into the interior of the assembly hole 42 and a limit block is installed, and the outer peripheral surface of the limit rod 45 is sleeved with a spring 46 whose ends are respectively connected to the main roller frame 41 and the inner wall of the assembly hole 42.

[0025] Specifically, when it is necessary to separate the diaphragm edge material from the edge material collecting mechanism 4, the limiting rod 45 is pulled to adjust the position of the movable side plate 43, and the diaphragm edge material that was originally tight at the position of the movable side plate 43 is loosened and separated from the edge material collecting mechanism 4. After separation, the limiting rod 45 is released and reset under the action of the spring 46. When the spring 46 is in the initial state, the outer arc edge of the movable side plate 43 is adapted to the outer arc edge of the main roller frame 41, which will not affect the winding of the diaphragm edge material by the edge material collecting mechanism 4, and the independent arm 3 inserted into the assembly hole 42 will not be affected by the limiting rod 45.

[0026] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0027] Therefore, the above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application; that is, all equivalent changes made according to the scope of the claims of the present application are within the protection scope of the claims of the present application.

Claims

1. A lithium battery separator slitting and trimming device, comprising a frame (1) and a support rod (2) arranged on the frame (1), characterized in that: A plurality of groups of independent arms (3) are mounted on the support rod (2), wherein two groups of independent arms (3) with the farthest relative distance are both mounted with a side material collection mechanism (4), the side material collection mechanism (4) comprising a main roller frame (41) and a movable side plate (43) arranged on the main roller frame (41), the main roller frame (41) and the movable side plate (43) forming a movably connected relationship.

2. The lithium battery separator slitting and edge trimming device according to claim 1, characterized in that: A winding roller (5) is installed at the end of the independent arm (3) located between the two groups of independent arms (3) with the farthest relative distance.

3. The lithium battery separator cutting and trimming device according to claim 1, characterized in that: An assembly hole (42) adapted to the independent arm (3) is provided on the end surface of the main roller frame (41).

4. The lithium battery separator slitting and trimming device according to claim 1, characterized in that: The movable side plate (43) and the main roller frame (41) are connected via fasteners.

5. The lithium battery separator slitting and edge trimming device according to claim 4, characterized in that: The fastener comprises a fixing screw (44), the end of which passes through the movable side plate (43) and is threadedly connected to the inner side wall of the main roller frame (41).

6. The lithium battery separator slitting and edge trimming device according to claim 4, characterized in that: The fastener comprises a limit rod (45) whose end is connected to the inner wall of the movable side plate (43); the end of the limit rod (45) away from the movable side plate (43) is inserted into the interior of the assembly hole (42) and a limit block is installed; the outer peripheral surface of the limit rod (45) is sleeved with a spring (46) whose ends are respectively connected to the main roller frame (41) and the inner wall of the assembly hole (42).

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