Edge trimmer for processing lithium ion battery diaphragm

Abstract

The invention discloses an edge trimmer for lithium ion battery diaphragm processing, and relates to the technical field of battery diaphragm processing, the edge trimmer comprises a rack assembly, and a diaphragm feeding conveying system, an edge trimming system, a diaphragm discharging conveying system and a rolling assembly are sequentially arranged on the rack assembly in the diaphragm conveying direction; the edge cutting system is obliquely arranged, the inclination direction is lowered from the film inlet conveying system to the film outlet conveying system, horizontal conveying of diaphragms is changed into inclined conveying through the inclination fall of the two ends of the edge cutting system, on one hand, the wrap angles of the diaphragms and all conveying rollers are increased, and the supporting stability of the diaphragms is improved; and on the other hand, an acute angle is formed between the pull-down trimming and the cutting wheel in the trimming system, so that the cutting wheel can enter the diaphragm more smoothly, the diaphragm cutting is more stable, meanwhile, the trimming assembly is further provided with a cutting structure capable of adjusting the distance, the whole edge trimmer can be further suitable for machining of diaphragms of various models, and the cost is saved.

Description

Technical Field

[0001] The invention relates to the technical field of battery diaphragm processing, in particular to a trimming machine for lithium ion battery diaphragm processing. Background Art

[0002] Lithium-ion batteries are the representative of modern high-performance batteries, and are composed of four main parts: positive electrode materials, negative electrode materials, battery separators, and electrolytes. Among them, the battery separator is a thin film with a microporous structure. It is the key inner component with the most technical barriers in the lithium-ion battery industry chain. It plays the following two main roles in lithium batteries: first, it separates the positive and negative electrodes of the lithium battery to prevent the positive and negative electrodes from contacting and forming a short circuit; second, the micropores in the film allow lithium ions to pass through to form a charge and discharge circuit. Therefore, the quality of the battery separator directly affects the capacity, cycle capacity, and safety performance of the lithium battery. Excellent battery separators play an important role in improving the overall performance of the battery.

[0003] The production process of lithium-ion battery separators is mainly divided into dry process, wet process and coating. The main steps and principles of the dry process are: first, the polyolefin resin is melted, extruded and blown to form a crystalline polymer film, and then crystallization heat treatment and annealing operations are performed to obtain a highly oriented film structure, and then stretched at high temperature to separate the crystalline cross-section to form a porous structure battery separator; currently, the dry process mainly includes two processes: dry uniaxial stretching and biaxial stretching.

[0004] The lithium battery separator produced by dry single drawing will easily produce uneven edges due to defects in the casting stage and deformation in the hot stretching stage. In the actual production process, a trimming machine will be used to cut the edges of the stretched battery separator to be smooth. However, the trimming equipment for traditional lithium battery separator production and processing usually has a fixed blade spacing, so it can only process one type of separator. When the production line is changed, the trimming equipment for lithium battery separator production and processing needs to be replaced, which wastes a lot of manpower and time. At the same time, the introduction of equipment also requires a lot of funds. In addition, the traditional trimming method is to use a cutter to directly cut the separator between the two support rollers. The separator is only pulled by the support rollers at both ends. When cutting, it is easy to cause the battery separator to shake, resulting in uneven cutting edges, and in severe cases, the separator is scrapped.

[0005] In view of this, it is urgent to develop a more excellent trimming machine for lithium-ion battery separator processing to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to provide a trimming machine for processing lithium-ion battery diaphragms, which can stably trim the battery diaphragms by setting a trimming system capable of tilting the battery diaphragms, and cooperating with a horizontal film inlet conveying system and a film outlet conveying system, thereby solving the problem of instability of traditional horizontal trimming.

[0007] At the same time, the trimming assembly is also provided with a cutting structure with adjustable spacing, so that the entire trimming machine can be further adapted to the processing of various types of diaphragms, thus solving the problem of single processing.

[0008] The purpose of the present invention can be achieved through the following technical solutions:

[0009] A trimming machine for processing lithium-ion battery diaphragms comprises a frame assembly, on which a film feeding conveying system, a trimming system, a film discharging conveying system and a winding assembly are sequentially arranged along the diaphragm conveying direction;

[0010] The trimming system is tilted, and the tilt direction decreases from the film inlet conveying system to the film outlet conveying system. The tilt difference at both ends of the trimming system changes the conveying of the diaphragm from horizontal to tilted.

[0011] As a further solution of the present invention: the frame assembly includes a bottom plate, a mounting frame is symmetrically arranged on the top of the bottom plate, and the film inlet conveying system, the trimming system and the film outlet conveying system are all arranged between the two mounting frames.

[0012] As a further solution of the present invention: the film feed conveying system includes a first conveying roller and a flattening base 1 arranged between two mounting frames, flattening rollers are rotatably arranged at both ends of the flattening base 1, a flattening component is arranged on the side of the flattening base 1 close to the trimming system, the flattening component includes a fixed plate, a third conveying roller is rotatably arranged between the two fixed plates, an adjusting cylinder is arranged on the top of the two fixed plates, and a second conveying roller is rotatably arranged between the bottoms of the adjusting cylinders.

[0013] As a further solution of the present invention: the trimming system includes a driving roller, a fourth conveying roller, an upper smoothing roller and a lower smoothing roller, wherein a trimming assembly is also arranged between the upper smoothing roller and the lower smoothing roller, and edge material winding assemblies are symmetrically arranged at both ends of the inner side surface of the trimming assembly.

[0014] As a further solution of the present invention: the driving roller, the fourth conveying roller, the upper smoothing roller and the lower smoothing roller are all rotatably arranged between two mounting frames, the top of one side mounting frame is connected with a connecting frame 1, the outer end of the connecting frame 1 is installed with a rotating cylinder 1, the rotating shaft of the rotating cylinder 1 passes through the connecting frame 1 and is connected with a driving gear 1, and the driving gear 1 is meshed with the driving gear 2 connected to one end of the driving roller.

[0015] As a further solution of the present invention: the trimming assembly includes a fixed bracket, mounting plates are symmetrically welded on both sides of the fixed bracket, a cutting part is arranged between the two mounting plates, and the trimming assembly also includes a supporting part arranged between the two mounting plates, and the cutting part corresponds to the supporting part in position.

[0016] As a further solution of the present invention: the cutting part includes a trimming box rotatably arranged on two mounting plates, both ends of the trimming box are provided with rotating drums, a connecting frame three is installed on one mounting plate, a rotating cylinder two is arranged on the outer side of the connecting frame three, the rotating shaft of the rotating cylinder two is connected with a transmission gear five, the transmission gear five is meshingly connected with the axial surface of the corresponding side rotating drum, a bidirectional screw one is rotatably arranged inside the trimming box, both ends of the bidirectional screw one are rotatably connected with the rotating drums at both ends of the trimming box, one end of the bidirectional screw one is connected with a micro motor, the micro motor is fixed on a mounting plate, both ends of the bidirectional screw one are threadedly connected with a moving base, a second driving motor is fixedly installed on the inner side surface of the bottom of the moving base, and the output shaft of the second driving motor passes through the moving base and is connected with a cutting wheel.

[0017] As a further solution of the present invention: the supporting part includes a supporting platform installed between the mounting plates, the supporting platform is tilted, sliding grooves are symmetrically opened at both ends of the supporting platform, support plates are slidably arranged in the two sliding grooves, a two-way screw rod 2 is rotatably arranged at the bottom of the supporting platform, both ends of the two-way screw rod 2 are threadedly connected to the support plate, a transmission gear 6 is connected to the middle part of the two-way screw rod 2, a driving shaft is also rotatably arranged on one side of the bottom of the supporting platform, one end of the driving shaft is connected to a transmission gear 7, the transmission gear 7 is meshed with the transmission gear 6, and the other end of the driving shaft passes through the mounting frame and is connected to a third driving motor.

[0018] As a further solution of the present invention: the film delivery conveying system includes a flattening base 2 arranged on a mounting frame, and two flattening rollers are symmetrically arranged on both sides of the flattening base 2. A first output roller and a second output roller are rotatably arranged at one end of the mounting frame close to the winding assembly, and electric slide rails are symmetrically installed at the bottom of the mounting frame, and a third output roller is rotatably arranged on the two electric slide rails.

[0019] As a further solution of the present invention: the winding assembly includes a winding base located on the bottom plate, a winding roller is rotatably arranged on the top of the winding base, a winding motor is installed on the outer side of the top of the winding base, and the output shaft of the winding motor is connected to the winding roller.

[0020] Beneficial effects of the present invention:

[0021] 1. The present invention provides a trimming system capable of tilting the cutting of the battery diaphragm, and cooperates with the horizontal film inlet conveying system and the film outlet conveying system to perform stable trimming of the battery diaphragm. The inclined support of the trimming assembly can avoid causing the battery diaphragm to shake when the cutting wheel acts on the battery diaphragm, so that the trimming is smooth. At the same time, the trimming assembly is also provided with a cutting structure with adjustable spacing, so that the entire trimming machine can be further applied to the processing of various types of diaphragms, saving costs.

[0022] 2. The present invention realizes the adjustment of the distance between two cutting wheels by setting an adjustable cutting wheel spacing structure, and is suitable for the trimming processing of various types of diaphragms. When the production line is changed, there is no need to replace the trimming equipment, which saves a lot of manpower and time, and further saves production costs. At the same time, the deflection angle of the cutting can be adjusted. The cutting wheel is lifted when not processing, and the cutting wheel is released for processing during cutting, so as to realize the start and stop of cutting. Furthermore, a small range of deflection during the cutting process can adjust the cutting position and cutting depth to ensure the adequacy of the cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0025] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0026] Figure 3 It is a schematic diagram of the overall transverse cross-sectional structure of the present invention;

[0027] Figure 4 It is a schematic diagram of the internal structure of the present invention;

[0028] Figure 5 The structure of the trimming assembly of the present invention is shown in FIG. Figure 1 ;

[0029] Figure 6 The structure of the trimming assembly of the present invention is shown in FIG. Figure 2 ;

[0030] Figure 7 It is a schematic diagram of the internal structure of the cutting part of the present invention.

[0031] In the figure: 1, frame assembly; 11, bottom plate; 12, mounting frame; 2, film feeding conveying system; 21, first conveying roller; 22, flattening base 1; 23, flattening roller 1; 24, second conveying roller; 25, third conveying roller; 26, first driving motor; 27, regulating cylinder; 3, trimming system; 31, transmission roller; 32, connecting frame 1; 33, rotating cylinder 1; 34, fourth conveying roller; 35, upper leveling roller; 36, trimming assembly; 361, fixed bracket; 362, mounting plate; 363, trimming box; 3631, rotating drum; 364, rotating cylinder 2; 365, bidirectional screw 1; 366, moving base; 367, micro Type motor; 368, second drive motor; 369, cutting wheel; 3610, support table; 3611, support plate; 3612, two-way screw rod; 3613, drive shaft; 3614, third drive motor; 3615, leveling rod; 37, lower leveling roller; 38, edge material winding assembly; 381, connecting frame two; 382, ​​rotating cylinder three; 383, winding wheel; 4, film delivery conveying system; 41, flattening base two; 42, flattening roller two; 43, first output roller; 44, second output roller; 45, electric slide rail; 46, third output roller; 5, winding assembly; 51, winding base; 52, winding motor; 53, winding roller. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] The present invention Figure 1-Figure 7 As shown, a trimming machine for processing lithium-ion battery diaphragms is provided. By setting a trimming system 3 that can cut the battery diaphragm at an angle, and cooperating with a horizontal film inlet conveying system 2 and a film outlet conveying system 4, the battery diaphragm can be stably trimmed. The inclined support of the trimming component 36 can avoid causing the battery diaphragm to shake when the cutting wheel 369 acts on the battery diaphragm, so that the trimming is smooth. At the same time, the trimming component 36 is also provided with a cutting structure with an adjustable spacing, so that the entire trimming machine can be further applied to the processing of various types of diaphragms, saving costs.

[0034] like Figure 1 As shown, the trimming machine comprises a frame assembly 1 installed on the production line, and a film inlet conveying system 2, a trimming system 3, a film outlet conveying system 4 and a winding assembly 5 are sequentially arranged on the frame assembly 1 along the film conveying direction;

[0035] The trimming system 3 is tilted, and the tilting direction decreases from the film inlet conveying system 2 to the film outlet conveying system 4. Through the tilt difference at both ends of the trimming system 3, the conveying of the diaphragm is changed from horizontal to tilted. On the one hand, the wrap angle between the diaphragm and each conveying roller is increased, and the stability of the diaphragm support is increased. On the other hand, the pull-down trimming (the diaphragm moves from the high end to the low end) forms an acute angle with the cutting wheel 369 in the trimming system 3, which makes the cutting wheel 369 enter the film more smoothly and cuts the diaphragm more steadily.

[0036] The winding assembly 5 is located at the lower end, and the battery separator after edge trimming is wound up, so that the winding structure can be replaced conveniently.

[0037] Further Figure 1-Figure 3 As shown, the above-mentioned frame assembly 1 includes a bottom base plate 11, a movable wheel is installed at the bottom of the bottom plate 11, and the movable wheel has a locking structure, and a mounting frame 12 is symmetrically arranged on the top of the bottom plate 11, and the two mounting frames 12 are hollow structures in the middle, and the above-mentioned film inlet conveying system 2, trimming system 3 and film outlet conveying system 4 are all arranged between the two mounting frames 12.

[0038] Further Figure 1-Figure 3 As shown, the above-mentioned film feeding conveying system 2 includes a first conveying roller 21, which is rotatably arranged between two mounting frames 12 and located at the input end of the diaphragm. The mounting frame 12 is provided with a flattening base 22 on the side of the first conveying roller 21 close to the trimming system 3, and flattening rollers 23 are rotatably arranged at both ends of the flattening base 22. The two flattening rollers 23 are symmetrically distributed about the center line of the flattening base 22, and are flush with each other in horizontal positions, so as to flatten the input diaphragm. The mounting frame 12 is provided with a flattening component on the side of the flattening base 22 close to the trimming system 3, and the flattening component includes fixing plates on both sides, and the two fixing plates are fixed by bolts. Fixed on the mounting frame 12 on the corresponding side, a third conveying roller 25 is rotatably arranged between the two fixed plates, and a first drive motor 26 is installed on one side of the fixed plate, the output shaft of the first drive motor 26 is connected to the third conveying roller 25, a slide groove is opened on the top of the two fixed plates, and an adjusting cylinder 27 is installed on the top of the two fixed plates, and a slide seat is connected to the bottom of the adjusting cylinder 27, and the slide seat is slidably arranged in the slide groove, and a second conveying roller 24 is rotatably arranged between the two slide seats, and by starting the adjusting cylinder 27, the second conveying roller 24 is driven to move vertically, and the spacing between the second conveying roller 24 and the third conveying roller 25 is changed, so as to flatten diaphragms of different thicknesses.

[0039] Further Figure 2-Figure 4As shown, the above-mentioned trimming system 3 includes a driving roller 31, a fourth conveying roller 34, an upper smoothing roller 35 and a lower smoothing roller 37, wherein a trimming assembly 36 is further arranged between the upper smoothing roller 35 and the lower smoothing roller 37, and edge material winding assemblies 38 are symmetrically arranged at both ends of the inner side of the trimming assembly 36, wherein the driving roller 31, the fourth conveying roller 34, the upper smoothing roller 35 and the lower smoothing roller 37 are all rotatably arranged between two mounting frames 12, and a connecting frame 132 is connected to the top of one side mounting frame 12, and a rotating cylinder 133 is installed at the outer end of the connecting frame 132, and the rotating shaft of the rotating cylinder 133 passes through the connecting frame 132 and is connected to a driving gear 1, and the driving gear 1 is meshed and connected with a driving gear 2 connected to one end of the driving roller 31, so as to drive the driving roller 31 to rotate;

[0040] Further Figure 6 As shown, the above-mentioned edge material winding assembly 38 includes a winding wheel 383 rotatably arranged at a corresponding position at the bottom of the trimming assembly 36, and the winding wheel 383 is rotatably installed on the mounting frame 12 through a rotating shaft, and the outer end of the rotating shaft is connected to a transmission gear three, and a connecting frame 2 381 is arranged on the outer side of the mounting frame 12 facing the position of the winding wheel 383, and a rotating cylinder 3 382 is installed on the outer side of the connecting frame 2 381, and the rotating shaft of the rotating cylinder 3 382 is connected to a transmission gear four, and the transmission gear four is meshed with the transmission gear three, and the winding wheel 383 is driven to rotate by the rotating cylinder 3 382 to wind up the cut waste edges to avoid the accumulation of waste edges affecting the mechanical movement.

[0041] Further Figure 4-Figure 7As shown, the above-mentioned trimming assembly 36 includes a fixed bracket 361 connected to the mounting frame 12, and mounting plates 362 are symmetrically welded on both sides of the fixed bracket 361 in the longitudinal direction. A cutting part is arranged between the two mounting plates 362, wherein the cutting part includes a trimming box 363 rotatably arranged on the two mounting plates 362, and rotating cylinders 3631 are arranged at both ends of the trimming box 363, and are rotatably connected to the corresponding side mounting plate 362 through the rotating cylinder 3631, and a connecting frame 3 is installed on one side of the mounting plate 362, and a rotating cylinder 2 364 is arranged on the outer side of the connecting frame 3, and the rotating shaft of the rotating cylinder 2 364 is connected to a transmission gear 5, and the transmission gear 5 is meshed and connected with the axial surface of the rotating cylinder 3631 extending from the corresponding side (wherein the rotating cylinder 363 1 axial surface is provided with a tooth groove), further a bidirectional screw 365 is rotatably arranged inside the trimming box 363, both ends of the bidirectional screw 365 are rotatably arranged in the rotating drum 3631 at both ends of the trimming box 363, and one end of the bidirectional screw 365 away from the rotating cylinder 364 extends out of the rotating drum 3631 and is connected to a micro motor 367, the micro motor 367 is fixedly mounted on the mounting plate 362 on the same side, both ends of the bidirectional screw 365 are threadedly connected to a moving base 366, the two moving bases 366 are symmetrically arranged, and a second driving motor 368 is fixedly installed on the inner side surface of the bottom of the moving base 366, and the output shaft of the second driving motor 368 passes through the moving base 366 and is connected to a cutting wheel 369;

[0042] When the cutting part needs to adjust the distance between the two cutting wheels 369, the micro motor 367 is started to drive the bidirectional screw 365 to rotate, thereby realizing the two moving bases 366 to move towards each other, and the moving base 366 similarly drives the cutting wheels 369 to move towards each other, so as to realize the adjustment of the distance between the two cutting wheels 369. It is suitable for the edge trimming of various types of diaphragms. When changing production lines, there is no need to replace the edge trimming equipment, which saves a lot of manpower and time, and further saves production costs.

[0043] Furthermore, the cutting part can also adjust the deflection angle of cutting, lift the cutting wheel 369 when not processing, release the cutting wheel 369 for processing during cutting, realize the start and stop of cutting, and further, the small range of deflection during the cutting process can adjust the cutting position and cutting depth to ensure the adequacy of cutting.

[0044] When the deflection of the cutting part needs to be adjusted, the rotary cylinder 2 364 is started to drive the trimming box 363 to deflect, and the micro motor 367 is started synchronously to drive the bidirectional screw 1 365 to deflect at the same speed and direction to avoid changes in the spacing of the cutting wheel 369 and affecting the cutting size.

[0045] A support portion is further provided between the two mounting plates 362, and the support portion includes a support platform 3610 installed between the mounting plates 362. The support platform 3610 is tilted, and its tilting direction is along the upper smoothing roller 35 and the lower smoothing roller 37. The top surface of the support platform 3610 is flush with the plane formed by the tangent of the bottom of the upper smoothing roller 35 and the lower smoothing roller 37. Sliding grooves are symmetrically provided at both ends of the support platform 3610. The positions of the two sliding grooves correspond to the positions of the cutting wheel 369 during cutting. Support plates 3611 are slidably provided in the two sliding grooves. A bidirectional screw rod 3612 is rotatably provided at the bottom of the support platform 3610. The two ends of the bidirectional screw rod 3612 are threadedly connected to the support plate 3611, and the two bidirectional screw rods 3612 are driven by the support plate 3611 through their own rotation. The support plates 3611 move toward each other, and further, a transmission gear 6 is connected to the middle of the bidirectional screw rod 2 3612, and a driving shaft 3613 is rotatably arranged on one side of the bottom of the support platform 3610, and one end of the driving shaft 3613 is connected to a transmission gear 7, which is meshed with the transmission gear 6. The other end of the driving shaft 3613 is arranged to penetrate the mounting frame 12, and a fixing block is arranged on the corresponding side of the mounting frame 12, and a third driving motor 3614 is fixed on the fixing block, and the output shaft of the third driving motor 3614 is connected to the driving shaft 3613, and the driving shaft 3613 is driven to rotate by the third driving motor 3614, and the driving shaft 3613 drives the bidirectional screw rod 2 3612 to rotate, thereby driving the two support plates 3611 to move toward each other;

[0046] The adjustment of the support plate 3611 of the support part is synchronized with the adjustment of the spacing of the cutting wheel 369 of the cutting part, so that the diaphragm at the cutting position is always stably supported. At the same time, the inner side surface of the cutting wheel 369 is flush with the outer side surface of the support plate 3611. When the cutting wheel 369 cuts down, the finished product side is stably supported by the support plate 3611 to avoid the cutting and pulling of the cutting wheel 369, which causes the diaphragm to shake. The waste edge after cutting is synchronously rolled up by the winding wheel 383.

[0047] Further Figure 1-Figure 3 As shown, the film delivery system 4 includes a flattening base 41 disposed on the mounting frame 12, flattening rollers 42 are symmetrically disposed on both sides of the flattening base 41, and the two flattening rollers 42 are disposed horizontally and flushly, and a first output roller 43 and a second output roller 44 are rotatably disposed at one end of the mounting frame 12 close to the winding assembly 5, and the first output roller 43 and the second output roller 44 are located at the lower end, and further, electric slide rails 45 are symmetrically mounted at the bottom of the two mounting frames 12, and sliders are mounted on the two electric slide rails 45, and a third output roller 46 is rotatably disposed between the two sliders. The tension of the output diaphragm is adjusted by the flexible adjustment of the third output roller 46.

[0048] like Figure 2 and Figure 3As shown, the above-mentioned winding assembly 5 includes a winding base 51 located on the bottom plate 11, a winding roller 53 is rotatably arranged on the top of the winding base 51, a winding motor 52 is installed on the outer side of the top of the winding base 51, and the output shaft of the winding motor 52 is connected to the winding roller 53 to realize the rotation of the winding roller 53, thereby completing the winding of the battery diaphragm after trimming.

[0049] When the present invention is used, firstly, according to the model of the processed battery diaphragm, the third driving motor 3614 is started to drive the driving shaft 3613 to rotate, the driving shaft 3613 drives the bidirectional screw rod 2 3612 to rotate, the bidirectional screw rod 2 3612 drives the two support plates 3611 to move to the corresponding spacing, adapted to the cutting processing size of the battery diaphragm to be processed, while adjusting the support plate 3611, the micro motor 367 is synchronously started to drive the bidirectional screw rod 1 365 to rotate, the bidirectional screw rod 1 365 drives the two movable bases 366 to move towards each other, and the movable base 366 drives the cutting wheel 369 to move, so that the spacing between the two cutting wheels 369 meets the requirements and is adapted to the spacing between the outer sides of the two support plates 3611;

[0050] After that, the stretched battery diaphragm is introduced from the film inlet conveying system 2, passed through the inclined trimming assembly 36, led out from the film outlet conveying system 4, and rolled up in the winding assembly 5. The winding motor 52 is started to drive the winding roller 53 to start winding, and the rotating cylinder 1 33 is started synchronously to drive the transmission roller 31 to drive. The diaphragm conveying process can only start the rotating cylinder 2 364 to drive the trimming box 363 and the cutting wheel 369 to deflect and contact the diaphragm for cutting. While the rotating cylinder 2 364 is being rotated, the micro motor 367 is started synchronously to drive the bidirectional screw 1 365 to rotate at the same speed and direction to avoid affecting the distance between the two cutting wheels 369.

[0051] Similarly, during the diaphragm trimming process, the angle of the cutting wheel 369 can be slightly adjusted, thereby adjusting the cutting depth and direction to achieve adequate cutting.

[0052] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0053] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A trimming machine for processing lithium-ion battery separators, characterized in that: It comprises a frame assembly (1), on which a film inlet conveying system (2), a trimming system (3), a film outlet conveying system (4) and a winding assembly (5) are sequentially arranged along the film conveying direction; The trimming system (3) is arranged to be inclined, and the inclination direction decreases from the film inlet conveying system (2) to the film outlet conveying system (4). Through the inclination difference at both ends of the trimming system (3), the conveying of the diaphragm is changed from horizontal to inclined.

2. The trimming machine for processing lithium-ion battery separators according to claim 1, characterized in that: The frame assembly (1) comprises a bottom plate (11), a mounting frame (12) is symmetrically arranged on the top of the bottom plate (11), and the film inlet conveying system (2), the trimming system (3) and the film outlet conveying system (4) are all arranged between the two mounting frames (12).

3. The trimming machine for processing lithium-ion battery separators according to claim 2, characterized in that: The film feeding conveying system (2) comprises a first conveying roller (21) and a flattening base (22) arranged between two mounting frames (12), flattening rollers (23) are rotatably arranged at both ends of the flattening base (22), a flattening assembly is arranged on the side of the flattening base (22) close to the trimming system (3), the flattening assembly comprises a fixed plate, a third conveying roller (25) is rotatably arranged between the two fixed plates, an adjusting cylinder (27) is arranged on the top of the two fixed plates, and a second conveying roller (24) is rotatably arranged between the bottoms of the adjusting cylinder (27).

4. The trimming machine for processing lithium-ion battery separators according to claim 2, characterized in that: The trimming system (3) comprises a driving roller (31), a fourth conveying roller (34), an upper smoothing roller (35) and a lower smoothing roller (37), wherein a trimming assembly (36) is arranged between the upper smoothing roller (35) and the lower smoothing roller (37), and edge material winding assemblies (38) are symmetrically arranged at both ends of the inner side surface of the trimming assembly (36).

5. The trimming machine for processing lithium-ion battery separators according to claim 4, characterized in that: The driving roller (31), the fourth conveying roller (34), the upper leveling roller (35) and the lower leveling roller (37) are all rotatably arranged between the two mounting frames (12); the top of one side mounting frame (12) is connected with a connecting frame (32); the outer end of the connecting frame (32) is installed with a rotating cylinder (33); the rotating shaft of the rotating cylinder (33) passes through the connecting frame (32) and is connected with a driving gear (1); the driving gear (1) is meshed with a driving gear (2) connected to one end of the driving roller (31).

6. The trimming machine for processing lithium-ion battery separators according to claim 4, characterized in that: The trimming assembly (36) comprises a fixed bracket (361), mounting plates (362) are symmetrically welded on both sides of the fixed bracket (361), a cutting portion is arranged between the two mounting plates (362), and the trimming assembly (36) further comprises a supporting portion arranged between the two mounting plates (362), the cutting portion and the supporting portion being arranged in corresponding positions.

7. The trimming machine for processing lithium-ion battery separators according to claim 6, characterized in that: The cutting part comprises a trimming box (363) rotatably arranged on two mounting plates (362), a rotating cylinder (3631) is arranged at both ends of the trimming box (363), a connecting frame (3) is installed on one side mounting plate (362), a rotating cylinder (364) is arranged outside the connecting frame (3), a rotating shaft of the rotating cylinder (364) is connected to a transmission gear (5), and the transmission gear (5) is meshed with the axial surface of the corresponding rotating cylinder (3631), and a bidirectional screw (365) is rotatably arranged inside the trimming box (363), and the bidirectional screw (365) is arranged outside the mounting plate (362). The two ends of the bidirectional screw rod (365) are rotatably connected to the rotating drum (3631) at the two ends of the trimming box (363), one end of the bidirectional screw rod (365) is connected to a micro motor (367), the micro motor (367) is fixed on the mounting plate (362), the two ends of the bidirectional screw rod (365) are threadedly connected to a movable base (366), a second driving motor (368) is fixedly installed on the inner side surface of the bottom of the movable base (366), and the output shaft of the second driving motor (368) passes through the movable base (366) and is connected to a cutting wheel (369).

8. The trimming machine for processing lithium-ion battery separators according to claim 7, characterized in that: The support portion comprises a support platform (3610) installed between the mounting plates (362), the support platform (3610) being tilted, sliding grooves being symmetrically provided at both ends of the support platform (3610), support plates (3611) being slidably provided in both sliding grooves, a bidirectional screw rod 2 (3612) being rotatably provided at the bottom of the support platform (3610), both ends of the bidirectional screw rod 2 (3612) being threadedly connected to the support plates (3611), a transmission gear 6 being connected to the middle of the bidirectional screw rod 2 (3612), a driving shaft (3613) being rotatably provided at one side of the bottom of the support platform (3610), one end of the driving shaft (3613) being connected to a transmission gear 7, the transmission gear 7 being meshedly connected to the transmission gear 6, and the other end of the driving shaft (3613) passing through the mounting frame (12) being connected to a third driving motor (3614).

9. The trimming machine for processing lithium-ion battery separators according to claim 2, characterized in that: The film delivery conveying system (4) comprises a second flattening base (41) arranged on a mounting frame (12), two flattening rollers (42) are symmetrically arranged on both sides of the second flattening base (41), a first output roller (43) and a second output roller (44) are rotatably arranged at one end of the mounting frame (12) close to the winding assembly (5), and electric slide rails (45) are symmetrically arranged at the bottom of the mounting frame (12), and a third output roller (46) is rotatably arranged on the two electric slide rails (45).

10. The trimming machine for processing lithium-ion battery separators according to claim 2, characterized in that: The winding assembly (5) comprises a winding base (51) located on a bottom plate (11), a winding roller (53) is rotatably arranged on the top of the winding base (51), a winding motor (52) is installed on the outer side of the top of the winding base (51), and the output shaft of the winding motor (52) is connected to the winding roller (53).

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