Cutting device for processing lithium battery diaphragm

Abstract

The utility model provides a cutting device for lithium battery diaphragm processing, which comprises a workbench and a mounting rack, the workbench is provided with an unreeling part and a tensioning part, the unreeling part is provided with a diaphragm material roll, the right side of the workbench is provided with a cutting table, the tensioning part is arranged between the unreeling part and the cutting table, and the mounting rack is arranged on the right side of the cutting table. A traction part and a winding part are arranged on the two sides of the cutting table respectively, the mounting frame is located between the traction part and the winding part, and a distance control assembly is arranged on the mounting frame. According to the cutting device for processing the lithium battery diaphragm, the tensioning part can adjust the tensioning force of a diaphragm material roll after the diaphragm material roll is unwound, the tension stability is effectively controlled, and the quality problem caused by material loosening or excessive stretching is prevented; and through the distance control assembly, the distance between every two adjacent cutting assemblies can be controlled to be kept equal all the time, so that strip-shaped finished product materials with the same width are cut out, and the finished product cutting efficiency is improved while the quality stability is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery diaphragm production technical field especially, it relates to a cutting device for lithium battery diaphragm processing. BACKGROUND

[0002] Lithium battery diaphragm is a kind of substance for isolating positive and negative, it can prevent direct contact between positive and negative, prevent current short circuit, simultaneously allow lithium ion to move freely in battery.Lithium battery diaphragm is generally made of polymer material, for example, polypropylene film.This film has high chemical stability and electrochemical stability, can withstand high temperature and strong acid-base environment in lithium ion battery.

[0003] The existing lithium battery diaphragm cutting device has certain problems in practical application: material relaxation or overstretching can occur in the unwinding process of material roll, which not only affects the quality of diaphragm, but also can lead to subsequent processing difficulties and unstable product quality;It is troublesome to adjust the distance between adjacent two cutting assemblies, which reduces the cutting processing efficiency.

[0004] Therefore, it is necessary to provide a cutting device for lithium battery diaphragm processing to solve the above technical problems. UTILITY MODEL CONTENT

[0005] The utility model provides a cutting device for lithium battery diaphragm processing, solve the material roll in unwinding process, easy relaxation or overstretching occurs;It is troublesome to adjust the distance between adjacent two cutting assemblies, which reduces the processing efficiency problem.

[0006] To solve the above technical problems, the utility model provides a cutting device for lithium battery diaphragm processing, comprising: work table and mounting bracket, the work table is provided with unwinding part and tensioning part, the unwinding part is provided with diaphragm material roll, the right side of the work table is provided with cutting table, the tensioning part is located between unwinding part and cutting table, the both sides of cutting table are provided with traction part and winding part respectively, the mounting bracket is located between traction part and winding part, the mounting bracket is provided with distance control assembly, the distance control assembly is provided with multiple cutting assemblies.

[0007] Preferably, the unwinding part includes first support plate and first motor base, the first motor base is provided with first drive motor, the first support plate is rotatably connected with unwinding roller, the unwinding roller is connected with the output end of first drive motor, and the diaphragm material roll is arranged on the unwinding roller.

[0008] Preferably, the tensioning part comprises a second supporting plate and a second tensioning roller, the outer side of the second supporting plate is provided with a lifting push rod, the tail end of the lifting push rod is rotationally connected with the first tensioning roller, a sliding groove is formed in the second supporting plate, and the two ends of the first tensioning roller are slidably connected with the sliding groove.

[0009] Preferably, the traction part comprises a third supporting plate and a second driving motor, the output end of the second driving motor is provided with a rotating shaft, the rotating shaft is rotationally connected with the third supporting plate, and the rotating shaft is fixedly connected with a traction wheel.

[0010] Preferably, the distance control assembly comprises a third driving motor, a displacement screw rod, a sliding rod, a guide plate, a sliding rail and a mounting seat, the output end of the third driving motor is connected with the displacement screw rod, the side surface of the guide plate is threadedly connected with the displacement screw rod, the side surface of the guide plate is slidably connected with the sliding rod, a guide groove is formed in the guide plate, the mounting seat is fixedly connected with a first sliding block and a second sliding block, the first sliding block is slidably connected with the guide groove, the second sliding block is slidably connected with the sliding rail, and the cutting assembly is arranged on the mounting seat.

[0011] Preferably, the cutting assembly comprises a second motor seat, a cutter positioning plate and a synchronous wheel, the second motor seat is provided with a fourth driving motor, the cutter positioning plate is rotationally connected with a cutting blade, the synchronous wheel is rotationally connected with the output end of the fourth driving motor and the cutter positioning plate respectively, and the outer side of the synchronous wheel is provided with a synchronous belt.

[0012] Compared with the related art, the cutting device for lithium battery diaphragm processing has the following beneficial effects:

[0013] The cutting device for lithium battery diaphragm processing provided by the utility model can adjust the tensioning force of the diaphragm material roll after unwinding, effectively control the tension stability, prevent quality problems caused by material relaxation or excessive stretching, can control the distance between the adjacent two groups of cutting assemblies to be always equal through the distance control assembly, thereby cutting out strip-shaped finished material with equal width, and the efficiency of finished cutting processing is improved while the quality stability is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The structure schematic view of a preferred embodiment of the cutting device for lithium battery diaphragm processing provided by the utility model is shown in the figure.

[0015] Figure 2 The structure schematic view of the unwinding part, the tensioning part and the traction part in the utility model is shown in the figure.

[0016] Figure 3 The structure schematic view of the distance control assembly and the cutting assembly in the utility model is shown in the figure.

[0017] Figure 4 It is the structure schematic diagram of the distance control assembly in the utility model after decomposition.

[0018] Figure 5 It is the structure schematic diagram of the cutting assembly in the utility model.

[0019] Reference signs in the drawing: 1, workbench, 2, unwinding part, 21, first support plate, 22, first motor base, 23, first drive motor, 24, unwinding roller, 3, diaphragm roll, 4, tensioning part, 41, second support plate, 42, lifting push rod, 43, first tensioning roller, 44, sliding groove, 45, second tensioning roller, 5, cutting table, 6, traction part, 61, third support plate, 62, second drive motor, 63, rotating shaft, 64, traction wheel, 7, mounting frame, 8, distance control assembly, 81, third drive motor, 82, displacement screw rod, 83, sliding rod, 84, guide plate, 85, guide groove, 86, sliding track, 87, mounting seat, 88, first sliding block, 89, second sliding block, 9, cutting assembly, 91, second motor base, 92, fourth drive motor, 93, cutter positioning plate, 94, cutting blade, 95, synchronous wheel, 96, synchronous belt, 10, winding part. DETAILED DESCRIPTION

[0020] The utility model will be further described below in combination with the drawing and embodiment.

[0021] Please combine with reference Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 And Figure 5 Among them, Figure 1 It is the structure schematic diagram of a preferred embodiment of the cutting device for lithium battery diaphragm processing provided by the utility model;

[0022] Figure 2 It is the structure schematic diagram of unwinding part, tensioning part and traction part in the utility model;

[0023] Figure 3 It is the structure schematic diagram of distance control assembly and cutting assembly in the utility model;

[0024] Figure 4 It is the structure schematic diagram of distance control assembly in the utility model after decomposition.

[0025] Figure 5 It is the structure schematic diagram of the cutting assembly in the utility model.

[0026] The cutting device for processing lithium battery diaphragm comprises a workbench 1 and a mounting frame 7, the workbench 1 is provided with a unwinding part 2 and a tensioning part 4, the unwinding part 2 is provided with a diaphragm roll 3, the right side of the workbench 1 is provided with a cutting table 5, the tensioning part 4 is located between the unwinding part 2 and the cutting table 5, the two sides of the cutting table 5 are respectively provided with a traction part 6 and a winding part 10, the mounting frame 7 is located between the traction part 6 and the winding part 10, the mounting frame 7 is provided with a distance control assembly 8, and a plurality of cutting assemblies 9 are arranged on the distance control assembly 8.

[0027] The diaphragm roll 3 is placed on the unwinding part 2, pulled out and sequentially passes through the tensioning part 4 and the traction part 6, the distance control assembly 8 is adjusted until the distance between the cutting assemblies 9 reaches the processing requirement; after the unwinding part 2 is started to unwind, the diaphragm is driven to travel by the traction part 6, cut into equal-width strip-shaped materials by the cutting assembly 9, and finally wound up by the winding part 10.

[0028] The unwinding part 2 comprises a first supporting plate 21 and a first motor base 22, the first motor base 22 is provided with a first driving motor 23, the first supporting plate 21 is rotatably connected with an unwinding roller 24, the unwinding roller 24 is connected with the output end of the first driving motor 23, and the diaphragm roll 3 is arranged on the unwinding roller 24.

[0029] The unwinding part 2 drives the unwinding roller 24 through the first driving motor 23 to realize automatic unwinding operation, maintains stable material release rhythm, and improves the conveying efficiency of the diaphragm roll 3.

[0030] The tensioning part 4 comprises a second supporting plate 41 and a second tensioning roller 45, the outer side of the second supporting plate 41 is provided with a lifting push rod 42, the tail end of the lifting push rod 42 is rotatably connected with a first tensioning roller 43, the second supporting plate 41 is provided with a sliding groove 44, and the two ends of the first tensioning roller 43 are slidably connected with the sliding groove 44.

[0031] The tensioning part 4 adopts the sliding structure design of the lifting push rod 42 cooperating with the sliding groove 44, can dynamically adjust the height position of the first tensioning roller 43, effectively controls the tension stability of the diaphragm material, and prevents quality problems caused by material relaxation or excessive stretching.

[0032] The traction part 6 comprises a third supporting plate 61 and a second driving motor 62, the output end of the second driving motor 62 is provided with a rotating shaft 63, the rotating shaft 63 is rotatably connected with the third supporting plate 61, and the rotating shaft 63 is fixedly connected with a traction wheel 64.

[0033] The traction part 6 drives the traction wheel 64 through the second driving motor 62 to control the material conveying speed, forms speed matching with the previous and subsequent processes, ensures that the material remains in a flat state during the cutting process, and reduces the risk of position deviation.

[0034] The distance control assembly 8 comprises a third driving motor 81, a displacement screw rod 82, a sliding rod 83, a guide plate 84, a sliding rail 86 and a mounting base 87, the output end of the third driving motor 81 is connected with the displacement screw rod 82, the side surface of the guide plate 84 is threadedly connected with the displacement screw rod 82, the side surface of the guide plate 84 is slidably connected with the sliding rod 83, the guide groove 85 is formed in the guide plate 84, the first sliding block 88 and the second sliding block 89 are fixedly connected on the mounting base 87, the first sliding block 88 is slidably connected with the guide groove 85, the second sliding block 89 is slidably connected with the sliding rail 86, and the cutting assembly 9 is arranged on the mounting base 87.

[0035] The distance control assembly 8 drives the displacement screw rod 82 through the third driving motor 81 to realize linear movement of the guide plate 84, and in combination with the sliding rail 86 and the double sliding block structure, the horizontal spacing of the cutting assembly 9 can be accurately adjusted, and the cutting requirements of different machining requirements and various specifications of products can be met.

[0036] The cutting assembly 9 comprises a second motor base 91, a cutter positioning plate 93 and a synchronous wheel 95, the fourth driving motor 92 is arranged on the second motor base 91, the cutting blade 94 is rotatably connected on the cutter positioning plate 93, the synchronous wheel 95 is rotatably connected with the output end of the fourth driving motor 92 and the cutter positioning plate 93 respectively, and the outer side of the synchronous wheel 95 is provided with a synchronous belt 96.

[0037] The cutting assembly 9 adopts the synchronous belt 96 to link the fourth driving motor 92 and the cutting blade 94, so that the rotating speed of the blade and the material conveying speed are strictly synchronized, high-precision and smooth cutting is realized, and the production efficiency can be improved through parallel operation of multiple cutting units.

[0038] The working principle of the cutting device for lithium battery diaphragm processing provided by the utility model is as follows:

[0039] The diaphragm material roll 3 is placed on the unwinding part 2, is pulled out and sequentially passes through the tensioning part 4 and the traction part 6, the distance control assembly 8 is adjusted until the distance between the cutting assemblies 9 reaches the machining requirement, after the unwinding part 2 is started to unwind, the diaphragm is driven to advance by the traction part 6, is cut into equal-width strip-shaped materials by the cutting assembly 9 and is finally wound up by the winding part 10.

[0040] Compared with the related art, the cutting device for lithium battery diaphragm processing has the following beneficial effects:

[0041] The tensioning part 4 can adjust the tension after the diaphragm material roll 3 is unwound, effectively control the tension stability, prevent the quality problem caused by material relaxation or excessive stretching; through the distance control assembly 8, the distance between two adjacent cutting assemblies 9 can be controlled to be always equal, so that the strip-shaped finished material is cut out with equal width, the quality stability is guaranteed, and the finished cutting processing efficiency is improved.

[0042] The above only describes the embodiments of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.

Claims

1. A cutting device for processing lithium battery separators, characterized in that, include: The workbench and mounting frame are provided. The workbench is provided with an unwinding section and a tensioning section. A diaphragm roll is provided on the unwinding section. A cutting table is provided on the right side of the workbench. The tensioning section is located between the unwinding section and the cutting table. A traction section and a winding section are provided on both sides of the cutting table. The mounting frame is located between the traction section and the winding section. A distance control component is provided on the mounting frame. Multiple sets of cutting components are provided on the distance control component.

2. The cutting device for processing lithium battery separators according to claim 1, characterized in that, The unwinding section includes a first support plate and a first motor base. A first drive motor is mounted on the first motor base. An unwinding roller is rotatably connected to the first support plate. The unwinding roller is connected to the output end of the first drive motor. The diaphragm roll is mounted on the unwinding roller.

3. The cutting device for processing lithium battery separators according to claim 1, characterized in that, The tensioning part includes a second support plate and a second tensioning roller. A lifting push rod is provided on the outer side of the second support plate. The end of the lifting push rod is rotatably connected to the first tensioning roller. A sliding groove is provided on the second support plate, and the two ends of the first tensioning roller are slidably connected to the sliding groove.

4. The cutting device for processing lithium battery separators according to claim 1, characterized in that, The traction unit includes a third support plate and a second drive motor. The output end of the second drive motor is provided with a rotating shaft, which is rotatably connected to the third support plate. A traction wheel is fixedly connected to the rotating shaft.

5. The cutting device for processing lithium battery separators according to claim 1, characterized in that, The distance control component includes a third drive motor, a displacement screw, a sliding rod, a guide plate, a sliding rail, and a mounting base. The output end of the third drive motor is connected to the displacement screw. The side of the guide plate is threadedly connected to the displacement screw. The side of the guide plate is slidably connected to the sliding rod. A guide groove is provided on the guide plate. A first slider and a second slider are fixedly connected to the mounting base. The first slider is slidably connected to the guide groove, and the second slider is slidably connected to the sliding rail. The cutting component is mounted on the mounting base.

6. The cutting device for processing lithium battery separators according to claim 5, characterized in that, The cutting assembly includes a second motor base, a cutter positioning plate, and a timing pulley. A fourth drive motor is mounted on the second motor base. A cutting blade is rotatably connected to the cutter positioning plate. The timing pulley is rotatably connected to the output end of the fourth drive motor and the cutter positioning plate, respectively. A timing belt is provided on the outer side of the timing pulley.

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