CN116373279B - Double-pulling device for preparing lithium battery diaphragm - Google Patents
Double-pulling device for preparing lithium battery diaphragm Download PDFInfo
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- CN116373279B CN116373279B CN202310380909.3A CN202310380909A CN116373279B CN 116373279 B CN116373279 B CN 116373279B CN 202310380909 A CN202310380909 A CN 202310380909A CN 116373279 B CN116373279 B CN 116373279B
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- sliding
- plate
- fixedly connected
- chassis
- lithium battery
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 104
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 104
- 230000007246 mechanism Effects 0.000 claims abstract description 37
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 230000008878 coupling Effects 0.000 claims abstract description 12
- 238000010168 coupling process Methods 0.000 claims abstract description 12
- 238000005859 coupling reaction Methods 0.000 claims abstract description 12
- 238000002360 preparation method Methods 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims description 26
- 238000012544 monitoring process Methods 0.000 claims description 18
- 230000033001 locomotion Effects 0.000 claims description 6
- 239000013013 elastic material Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims 2
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 11
- 238000001125 extrusion Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000007779 soft material Substances 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/403—Manufacturing processes of separators, membranes or diaphragms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
- B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
- B29C55/14—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial successively
- B29C55/143—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial successively firstly parallel to the direction of feed and then transversely thereto
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/20—Edge clamps
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention relates to the field of film preparation, in particular to a double-pulling device for preparing a lithium battery diaphragm. Including first chassis, first chassis rigid coupling has the heating cabinet that is used for heating the diaphragm, and one side that first chassis kept away from the heating cabinet is provided with the guiding mechanism that is used for guiding the diaphragm edge, and first chassis has the second chassis through guiding mechanism rigid coupling, and second chassis symmetry rigid coupling has the fixed shell, is provided with the horizontal unit that draws that is used for diaphragm horizontal stretching in the fixed shell, and horizontal unit circumference is provided with the fixture that is used for fixed diaphragm edge. The edge of the diaphragm is guided to the front side and the rear side through the guide mechanism, the edge area of the diaphragm is flattened, the edge of the diaphragm is smoothly fixed in the subsequent conveying, the phenomenon that the diaphragm is uneven in local stress caused by lack of clamping points and is further uneven in stretching and even broken is avoided, the deformation quantity of the diaphragm is adapted through the clamping mechanism, the density of stress points is guaranteed on the premise that the stress is unchanged when the diaphragm is transversely pulled, and the stretching uniformity is improved.
Description
Technical Field
The invention relates to the field of film preparation, in particular to a double-pulling device for preparing a lithium battery diaphragm.
Background
In the structure of lithium battery, the separator is one of the key inner layer components, and is generally a polyolefin porous film with high strength and thinned, and the separator has the main functions of separating the positive electrode from the negative electrode of the battery, preventing the contact of the two electrodes and short circuit, and also has the function of passing electrolyte ions, so that the performance of the separator determines the interface structure, internal resistance and the like of the battery, and directly influences the capacity, circulation, safety performance and other characteristics of the battery.
In the process of preparing the lithium battery diaphragm, a double-pulling device is required to respectively transversely stretch and longitudinally stretch the lithium battery diaphragm, when the conventional device is stretched, along with the transverse pulling of the lithium battery diaphragm, the longitudinal length of the conventional device is slightly changed, so that the density of a clamping point at the edge of the lithium battery diaphragm is changed, further, the phenomenon of uneven stretching of the lithium battery diaphragm far away from the clamping point area is caused, the performance of the diaphragm is influenced by the phenomenon of uneven pore forming, and the region which is uneven in stretching is also lack to be stretched again, so that the product is unqualified, and economic loss is caused.
Disclosure of Invention
In order to overcome the defect that the density of clamping points at the edge of a lithium battery diaphragm becomes sparse gradually in the stretching process, the partial area of the lithium battery diaphragm is stressed unevenly, the phenomenon that the size of pores is uneven affects the performance of the diaphragm, and the area which is not uniform in stretching is lack of stretching again, so that a product is unqualified and economic loss is caused, the double-pulling device with the monitoring function for preparing the lithium battery diaphragm is provided.
The technical proposal is as follows: the utility model provides a lithium cell diaphragm preparation is with two devices that draw, including first chassis, first chassis symmetry is provided with first hydraulic stem, first hydraulic stem flexible end rigid coupling has the regulation slider, regulation slider and first chassis sliding connection, rotationally be connected with the squeeze roll between the regulation slider of symmetry, first chassis rotates and is connected with a plurality of motorized roll, motorized roll is crisscross distribution, leave the clearance between motorized roll and the adjacent squeeze roll, first chassis rigid coupling has the heating cabinet that is used for heating the diaphragm, one side that first chassis kept away from the heating cabinet is provided with the guiding mechanism that is used for guiding the diaphragm edge, one side rigid coupling that guiding mechanism kept away from first chassis has the second chassis, second chassis symmetry rigid coupling has the fixed shell, rotate in proper order between the fixed shell of symmetry and be connected with first transport roller and second transport roller, be provided with the horizontal drawing unit that is used for diaphragm horizontal drawing in the fixed shell, symmetrical rigid coupling has first slide and second slide in the fixed shell, first slide and second slide fixed connection, horizontal drawing unit circumference is provided with the clamping mechanism that is used for fixing the diaphragm edge.
Preferably, the guide mechanism comprises a third chassis fixedly connected with the first chassis, the third chassis is fixedly connected with the second chassis, electric guide rollers distributed at equal intervals are symmetrically arranged on the third chassis, the electric guide rollers are distributed in a splayed mode, opposite ends of the electric guide rollers deflect towards a direction close to the fixed shell, and the third chassis is fixedly connected with a supporting plate.
Preferably, the clamping mechanism comprises a U-shaped block fixedly connected to the transverse pulling unit, the U-shaped block is symmetrically and slidably connected with a U-shaped sliding rod, the U-shaped sliding rod is rotationally connected with a first contact column, the first contact column is contacted with a second slideway, the U-shaped block is symmetrically and rotationally connected with a second contact column, the second contact column rolls in the first slideway, one side, far away from the first contact column, of the U-shaped sliding rod is fixedly connected with a turntable, the turntable is rotationally connected with a first clamping plate, the first clamping plate is fixedly connected with a limiting sliding block through an elastic block, the U-shaped block is fixedly connected with a guide column, the guide column is in sliding connection with the limiting sliding block, and a first elastic element is fixedly connected between the symmetrical limiting sliding blocks.
Preferably, the first clamping plate is slidably connected with a second clamping plate, a sliding pin is fixedly connected to one side, close to the first clamping plate, of the second clamping plate, the sliding pin is slidably connected with the first clamping plate, and a second elastic element is fixedly connected between the sliding pin and the first clamping plate.
Preferably, adjacent surfaces of the symmetrical first clamping plates are made of elastic materials, and adjacent side surfaces of the symmetrical second clamping plates are made of elastic materials.
Preferably, the device further comprises a monitoring stretching mechanism, wherein the monitoring stretching mechanism is fixedly connected to a symmetrical fixing shell, the monitoring stretching mechanism comprises first lug plates which are symmetrically distributed, the symmetrical first lug plates are fixedly connected to the fixing shell, the fixing shell is symmetrically fixedly connected with a second lug plate, the fixing shell is symmetrically provided with a limiting cover, the limiting cover on the same side of the fixing shell is fixedly connected with the first lug plates and the second lug plates through U-shaped bent rods, a transmission component used for transmitting power is arranged in the limiting cover, a fixing rod is fixedly connected between the transmission components on the same side of the fixing shell in the circumferential direction, two ends of the transmission components on the same side of the fixing shell are fixedly connected with a motor shaft and a transmission shaft respectively, the motor shaft and the transmission shaft are rotationally connected with the limiting cover, and the fixing rod is symmetrically provided with a sliding plate component used for pulling a diaphragm.
Preferably, the adjacent side surfaces of the limiting cover are arranged to be inclined surfaces, the symmetrical inclined surfaces are gradually far away from one end, close to the first lug plate, of the other end, the limiting cover inclined surfaces are provided with limiting grooves used for guiding the sliding plate assembly to move, the limiting groove portions, close to the fixing shell areas, are folding grooves, and the distance between the folding grooves and the lower side surfaces of the limiting cover is reduced and then increased along the direction of the inclined surfaces of the limiting cover.
Preferably, the sliding plate assembly comprises a first sliding plate which is arranged in a central symmetry manner, the first sliding plate which is in central symmetry manner is connected with a fixed rod in a sliding manner, the fixed rod is sequentially connected with a second sliding plate, a third sliding plate, a fourth sliding plate and a fifth sliding plate in a sliding manner, one side, close to the fixed rod, of the first sliding plate which is in central symmetry manner is fixedly connected with a telescopic frame, the telescopic frame is fixedly connected with the second sliding plate, the third sliding plate, the fourth sliding plate and the fifth sliding plate, the adjacent first sliding plates are fixedly connected, and limiting sliding rods which are in limiting fit with limiting grooves of a limiting cover are fixedly connected on the opposite sides of the first sliding plates which are far away from each other.
Preferably, one sides of the first sliding plate, the second sliding plate, the third sliding plate, the fourth sliding plate and the fifth sliding plate, which are far away from the fixed rods, are respectively provided with L-shaped rods, the adjacent L-shaped rods are staggered with each other, and the adjacent L-shaped rods are in sliding connection.
Preferably, the novel hydraulic lifting device further comprises a second hydraulic rod, the second lug plate is provided with an arc-shaped groove in limiting fit with the transmission shaft, the limiting cover is rotationally connected with the first lug plate, the limiting cover is in sliding connection with the second lug plate, the second hydraulic rod is fixedly connected with the fixed shell, the telescopic end of the second hydraulic rod is fixedly connected with a U-shaped plate, the U-shaped plate is in sliding connection with the fixed shell, and the U-shaped plate is provided with a chute in limiting sliding fit with the transmission shaft.
The beneficial effects of the invention are as follows: 1. the height of the adjusting slide block is adjusted through the first hydraulic rod, the distance between the extrusion roller and the electric roller is further controlled, the extrusion force of the extrusion roller and the electric roller on the lithium battery diaphragm is changed, the adjustment of the longitudinal tensile strength of the lithium battery diaphragm is achieved, and the application range of the device is enlarged.
2. The edge of the lithium battery diaphragm is guided and flattened through the guide mechanism, so that the edge of the lithium battery diaphragm is smoothly clamped and fixed in subsequent movement, an electric guide roller distributed in a splayed shape generates a force perpendicular to the electric guide roller and obliquely leftwards to the edge of the lithium battery diaphragm, the edge of the lithium battery diaphragm is flattened, the edge of the lithium battery diaphragm is smoothly fixed in subsequent conveying, and the phenomenon that the lithium battery diaphragm is uneven in local stress caused by lack of clamping points and further uneven stretching and even cracking are caused is avoided.
3. The deformation that produces when two first clamping plates and two second clamping plates contact through soft material and diaphragm on it increases with the area of contact of lithium cell diaphragm, increases the frictional force between the two and improves clamping stability, because soft material to the contact extrusion guard action of diaphragm, prevent that first clamping plate and second clamping plate from leading to the diaphragm damage to hard clamping force of diaphragm too big, consequently can further improve the clamping dynamics to the diaphragm through soft material's centre gripping, avoid the phenomenon that breaks away from appears in the lithium cell diaphragm in subsequent operation.
4. The position of the clamping point of the lithium battery diaphragm is kept through the clamping mechanism, so that tiny deviation of the diaphragm in the longitudinal direction during transverse pulling is avoided, the distance between the longitudinally adjacent clamping points of the diaphragm during transverse pulling is ensured, and the stretching uniformity is improved.
5. The telescopic frame is driven to move through the first sliding plate, the telescopic frame is gradually unfolded, the telescopic frame drives the second sliding plate, the third sliding plate, the fourth sliding plate and the fifth sliding plate to slide along the fixed rod, the distances between the front side and the rear side of the first sliding plate, the second sliding plate, the third sliding plate, the fourth sliding plate and the fifth sliding plate which are symmetrical in the center are gradually increased, the distances between the upper L-shaped plate and the lower L-shaped plate are gradually reduced, the lithium battery diaphragm is stretched again in the area with uneven stretching in the stretching process, the stretching uniformity of the lithium battery diaphragm is guaranteed, and the pore-forming quality is improved.
Drawings
Fig. 1 is a schematic overall perspective view of the present invention.
Fig. 2 is a schematic view of a partial perspective structure of the present invention.
Fig. 3 is a schematic perspective view of a fixing case, a horizontal pulling unit and a part of parts of the present invention.
Fig. 4 is an exploded view of the stationary housing, the cross-draw unit and a portion of the components of the present invention.
Fig. 5 is a schematic perspective view of a guiding mechanism and a part of the guiding mechanism.
Fig. 6 is an enlarged view of fig. 5 a in accordance with the present invention.
Fig. 7 is a schematic perspective view of a clamping mechanism and a part of the components of the present invention.
Fig. 8 is a perspective structural cross-sectional view of the clamping mechanism of the present invention.
Fig. 9 is a perspective cross-sectional view of the clamping mechanism of the present invention.
Fig. 10 is a schematic diagram of a three-dimensional structure of a part of a monitor stretching mechanism according to the present invention.
Fig. 11 is a schematic perspective view of a monitoring stretching mechanism according to the present invention.
Fig. 12 is an enlarged view of fig. 11 at B in accordance with the present invention.
Fig. 13 is a schematic perspective view of a fixing case and a limiting cover according to the present invention.
FIG. 14 is a schematic perspective view of a skateboard assembly and a portion of the components of the present invention.
Fig. 15 is a schematic perspective view of a skateboard assembly of the present invention.
FIG. 16 is a schematic perspective view of a skateboard assembly and a portion of the components of the present invention.
Fig. 17 is an exploded view of the parts of the fixed housing, the second hydraulic rod, the U-shaped plate, etc. of the present invention.
Reference numerals illustrate: 101-first chassis, 102-first hydraulic lever, 103-adjusting slide, 104-squeeze roller, 105-electric roller, 106-heating box, 201-second chassis, 202-fixed housing, 203-first transport roller, 204-second transport roller, 205-cross-pull unit, 206-first slide, 207-second slide, 301-third chassis, 302-electric guide roller, 303-support plate, 401-U-shaped block, 402-U-shaped slide bar, 403-first contact column, 404-second contact column, 405-turntable, 406-first clamping plate, 407-elastic block, 408-limit slide, 409-guide column, 410-first elastic element, 411-second clamping plate, 412-slide pin, 413-second elastic element, 501-first ear plate, 502-second ear plate, 503-limit cap, 504-transmission assembly, 505-fixed bar, 506-electric shaft, 507-transmission shaft, 601-first slide plate, 602-second, 603-third slide plate, 604-fourth slide plate, 606-fifth slide plate, 606-slide bar, 702-slide bar, and slide bar.
Description of the embodiments
So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized below, may be had by reference to embodiments, some of which are illustrated in the appended drawings, wherein the detailed description sets forth the best mode of the invention, but which are intended to be carried out in many different ways than those herein set forth, and wherein like modifications may be made by those skilled in the art without departing from the spirit of the invention, and therefore the invention is not limited to the specific embodiments disclosed below.
Examples
1-4, including a first chassis 101, the first chassis 101 is fixedly connected with a first hydraulic rod 102 symmetrically distributed, the telescopic end of the first hydraulic rod 102 is connected with an adjusting slide block 103 by bolts, the adjusting slide block 103 is slidingly connected with the first chassis 101, a squeeze roller 104 is rotationally connected between the symmetrical adjusting slide blocks 103, the first chassis 101 is rotationally connected with four electric rollers 105, the four electric rollers 105 are sequentially staggered from right to left, gaps are reserved between the electric rollers 105 and the adjacent squeeze rollers 104 to change the gap size to control the longitudinal tensile strength of the lithium battery diaphragm, the application range of the device is enlarged, the first chassis 101 is fixedly connected with a heating box 106 for heating the lithium battery diaphragm, the left side of the first chassis 101 is fixedly connected with a guide mechanism for guiding the edge of the lithium battery diaphragm, the left side of the guide mechanism is fixedly connected with a second chassis 201, the second chassis 201 is fixedly connected with a symmetrically distributed fixing shell 202, the symmetrical fixing shells 202 are sequentially and rotatably connected with a first conveying roller 203 and a second conveying roller 204 from right to left, the first conveying roller 203 and the second conveying roller 204 are used for supporting and conveying lithium battery diaphragms, a transverse pulling unit 205 used for transversely stretching the lithium battery diaphragms is fixedly connected in the fixing shell 202, a first slideway 206 and a second slideway 207 are symmetrically and fixedly connected in the fixing shell 202, the front side and the rear side of the first slideway 206 are respectively and symmetrically folded, the distance between the folding surfaces of the first slideway 206 between the first conveying roller 203 and the second conveying roller 204 is gradually increased from right to left, the distance between the front and rear symmetrical clamping points is increased, so that the lithium battery diaphragms are transversely pulled, the height between the first conveying roller 203 and the second conveying roller 204 and between the upper and lower adjacent second slide207 is higher than other areas, the lithium battery diaphragm edge is convenient to clamp subsequently, the first slide rail 206 is fixedly connected with the second slide rail 207, and the transverse pulling unit 205 is circumferentially provided with a clamping mechanism for fixing the lithium battery diaphragm edge.
As shown in fig. 1 and fig. 5, the guiding mechanism includes a third chassis 301, the third chassis 301 is fixedly connected with the first chassis 101, the third chassis 301 is fixedly connected with the second chassis 201, the third chassis 301 is symmetrically provided with electric guiding rollers 302 distributed at equal intervals, the electric guiding rollers 302 are distributed in a splayed shape, opposite ends of the electric guiding rollers 302 are inclined towards a direction close to the fixing shell 202, so that edges of the lithium battery diaphragm are flattened in a moving process, the lithium battery diaphragm is smoothly clamped in a subsequent moving process, uneven stress of the lithium battery diaphragm caused by uneven clamping points is avoided, and the third chassis 301 is fixedly connected with a supporting plate 303.
As shown in fig. 4-9, the clamping mechanism comprises a U-shaped block 401, the U-shaped block 401 is fixedly connected to the horizontal pulling unit 205, the U-shaped block 401 is symmetrically and slidably connected with two U-shaped slide bars 402, the U-shaped slide bars 402 are rotationally connected with two symmetrically distributed first contact columns 403, the first contact columns 403 roll along the second slide way 207, the U-shaped block 401 is symmetrically and rotationally connected with two symmetrically distributed second contact columns 404, the second contact columns 404 roll in the first slide way 206, the running resistance is reduced, the energy consumption of the device is reduced, a turntable 405 is fixedly connected to the opposite side of the U-shaped slide bars 402, the turntable 405 is rotationally connected with a first clamping plate 406, the first clamping plate 406 is fixedly connected with a limit slide block 408 through an elastic block 407, the elastic block 407 is made of rubber material, the U-shaped block 401 is fixedly connected with a guide column 409, the guide column 409 is in sliding connection with the limit slide block 408, a first elastic element 410 is fixedly connected between the symmetrical limit slide blocks 408, the first elastic element 410 is a spring, the first clamping plate 406 is in sliding connection with a second clamping plate 411, the first clamping plate 406 and the second clamping plate 411 relatively moves, the first clamping plate 406 and the second clamping plate 412 is prevented from moving in the opposite direction, the second clamping plate is prevented from changing the length of the second clamping plate, the second clamping plate is prevented from being in the sliding connection with the adjacent to the second sliding plate, the second clamping plate is a vertical sliding plate, and the second clamping plate is a diaphragm, the adjacent to the diaphragm is provided with a diaphragm, and a diaphragm, and a diaphragm is arranged, and a diaphragm is arranged.
When the lithium battery diaphragm is required to be pulled, a worker firstly adjusts the device according to the strength of the lithium battery diaphragm to be pulled, the worker starts the first hydraulic rod 102, the telescopic end of the first hydraulic rod 102 carries the adjusting slide block 103 to move upwards, the adjusting slide block 103 which is symmetrical front and back drives the extruding rollers 104 between the adjusting slide block and the extruding rollers to move upwards, the distance between the extruding rollers 104 and the adjacent electric rollers 105 is adjusted to be a target distance, the adjustment of the extruding force of the extruding rollers 104 to the lithium battery diaphragm is realized by adjusting the distance between the extruding rollers, the longitudinal tensile strength of the lithium battery diaphragm is further adjusted, the application range of the device is enlarged, then the worker closes the first hydraulic rod 102 to open the electric rollers 105, the heating box 106, the first conveying roller 203, the second conveying roller 204, the transverse pulling unit 205 and the electric guide roller 302, the transverse pulling unit 205 drives the U-shaped block 401 to do circumferential rotary motion together, the electric rollers 105 convey the lithium battery diaphragm to the left, the heating box 106 heats and softens the lithium battery diaphragm located at the lower side of the lithium battery diaphragm, the lithium battery diaphragm is easier to be pulled, and the rupture is prevented when the lithium battery diaphragm is pulled to be hard.
When the lithium battery diaphragm moves to the upper side of the supporting plate 303, the electric guide roller 302 rotates anticlockwise, at this time, the lithium battery diaphragm positioned on the upper side of the front-rear symmetrical electric guide roller 302 is subjected to a force perpendicular to the inclined left direction of the electric guide roller 302, the force is divided into a left force and a force on the front and rear sides, the edges of the lithium battery diaphragm move and flatten in the front-rear direction under the action of the force, the edges of the lithium battery diaphragm are smoothly clamped and fixed in the subsequent movement, the phenomenon that the lithium battery diaphragm is uneven in local stress and even broken due to the lack of clamping points is avoided, a U-shaped block 401 moving along with the transverse pulling unit 205 drives parts on the lithium battery diaphragm to move along with the upper part, the two first contact posts 403 roll on the opposite surfaces of the adjacent second slide ways 207 respectively, the two second contact posts 404 roll in the adjacent first slide ways 206 respectively, and friction force between the first contact posts 403 and the second slide ways 207 and the second contact posts 404 is reduced, and energy consumption in the device operation process is reduced.
When the first contact beams 403 roll to the area where the second slide rail 207 is adjacent to the first conveying roller 203, the two first contact beams 403 gradually start to move relatively under the extrusion of the symmetrical second slide rail 207, the first contact beams 403 drive the upper parts of the first contact beams to move together, the two limit sliding blocks 408 slide relatively along the guide beams 409, the symmetrical limit sliding blocks 408 extrude the first elastic element 410, along with the extrusion of the two first contact beams 403 by the symmetrical second slide rail 207, the distance between the two first clamping plates 406 and the two second clamping plates 411 is gradually reduced until the two first clamping plates 406 and the two second clamping plates 411 contact and extrude the lithium battery diaphragm respectively, so as to clamp the edge of the lithium battery diaphragm, prevent stress concentration from damaging the lithium battery diaphragm, reduce the breakage rate of the lithium battery diaphragm, further improve the clamping force on the lithium battery diaphragm, avoid the phenomenon that the lithium battery diaphragm breaks away in the subsequent operation, and complete the clamping of the edge of the lithium battery diaphragm after the two first contact beams 403 enter the area where the upper second slide rail 207 is adjacent to the first conveying roller 203, and thereafter the two first clamping plates 406 and the two second clamping plates maintain the respective clamping states.
After the second contact columns 404 roll to the folded area of the first slideway 206 near the first conveying roller 203, the two second contact columns 404 are limited by the adjacent first slideway 206 respectively, the distance between the two second contact columns 404 is gradually increased along with the movement of the two second contact columns, the two second contact columns 404 carry the U-shaped blocks 401 connected with the two second contact columns and the parts are far away, so as to transversely stretch the lithium battery diaphragm, when the second contact columns 404 enter the folded area of the first slideway 206 near the first conveying roller 203, the U-shaped blocks 401 deflect at an angle, the U-shaped blocks 401 drive the parts thereon to deflect together, the turntable 405 and the first clamping plate 406 rotate due to the extrusion contact of the first clamping plate 406 and the second clamping plate 411 with the lithium battery diaphragm, at this time, the first clamping plate 406 and the second clamping plate 411 are static relative to the lithium battery diaphragm, so that the first clamping plate 406 and the second clamping plate 411 are prevented from being driven to deflect together when the U-shaped block 401 deflects at an angle, torsion force is applied to the lithium battery diaphragm, breakage of the lithium battery diaphragm is prevented, the distance between the adjacent U-shaped blocks 401 in the longitudinal direction of the lithium battery diaphragm is reduced when the U-shaped block 401 deflects at an angle, the second clamping plate 411 starts to slide rightwards relative to the first clamping plate 406 under the tension of the lithium battery diaphragm, the sliding pin 412 is driven to compress the second elastic element 413, and the longitudinal length of the lithium battery diaphragm is not changed when the lithium battery diaphragm is transversely pulled along with the longitudinal separation of the first clamping plate 406 and the second clamping plate 411, so that the clamping point density of the lithium battery diaphragm is increased, and the stretching uniformity is improved.
As the second contact posts 404 roll in the folded region of the first slideway 206 near the first transporting roller 203, the lithium battery diaphragm is continuously stretched, after the second contact posts 404 roll to be separated from the folded region, the distance between the two second contact posts 404 stops changing, the lithium battery diaphragm is completely transversely pulled, the second contact posts 404 continuously roll, the lithium battery diaphragm is kept in a stretched state and shaped, until the second contact posts 404 roll out of the region between the first transporting roller 203 and the second transporting roller 204, after the second contact posts 404 roll out of the second slideway 207, the distance between the upper and lower adjacent second slideways 207 gradually increases, the two second contact posts 404 carry the first clamping plate 406 and the second clamping plate 411 to move outwards under the elastic force of the first elastic element 410, the clamping of the lithium battery diaphragm is gradually lost, the lithium battery diaphragm continuously moves leftwards under the action of the second transporting roller 204 to enter the subsequent process, so far, and then the staff closes the electric roller 105, the heating box 106, the first transporting roller 203, the second transporting roller 204, the electric transverse pulling unit 205 and the guiding roller 302.
Examples
Based on embodiment 1, as shown in fig. 11-14, the lithium battery diaphragm stretching device further comprises a monitoring stretching mechanism, the monitoring stretching mechanism is fixedly connected to the symmetrical fixing shell 202, the monitoring stretching mechanism comprises first ear plates 501 which are symmetrically arranged, the symmetrical first ear plates 501 are fixedly connected to the upper side and the lower side of the fixing shell 202, the fixing shell 202 is fixedly connected with second ear plates 502 which are symmetrically distributed, the fixing shell 202 is symmetrically provided with limiting covers 503 which are used for enabling the sliding plate assembly to move in a limiting mode, a lithium battery diaphragm transverse stretching area is monitored, the non-uniform stretching area is timely stretched again, the stretching quality of the lithium battery diaphragm is improved, two limiting covers 503 on the same side of the fixing shell 202 are fixedly connected through a U-shaped bent rod, the limiting covers 503 are fixedly connected with the first ear plates 501 and the second ear plates 502, a transmission assembly 504 is arranged in the limiting covers 503, the transmission assembly 504 is used for transmitting power from right to left, two ends of the transmission assembly 504 on the same side of the fixing shell 202 are fixedly connected with a motor shaft 506 and a transmission shaft, the motor shaft 506 and the transmission shaft 507 are respectively fixedly connected with the transmission shaft 507, and the battery diaphragm is symmetrically arranged between the motor shaft 506 and the limiting covers 507 and the battery diaphragm.
As shown in fig. 10 and 13, the adjacent sides of the limiting cover 503 on the same side of the fixing shell 202 are inclined surfaces, the symmetrical inclined surfaces are gradually far away from each other from right to left, the inclined surfaces of the limiting cover 503 are provided with limiting grooves for guiding the movement of the sliding plate assembly, the lithium battery diaphragm is monitored and stretched, the uneven area is stretched again, the porosity is improved, the product quality is improved, the limiting grooves close to the area of the fixing shell 202 are folded grooves, the distance between the folded grooves and the lower side surface of the limiting cover 503 is firstly reduced and then increased along the direction of the inclined surfaces of the limiting cover 503, along with the horizontal drawing thinning of the lithium battery diaphragm, the monitoring distance is also reduced along with the horizontal drawing of the lithium battery diaphragm, and the real-time monitoring of the whole horizontal drawing process of the lithium battery diaphragm is ensured.
As shown in fig. 14 and 15, the sliding plate assembly includes a first sliding plate 601 that is centrally disposed, the first sliding plate 601 that is centrally disposed is slidably connected to a fixed rod 505, the fixed rod 505 is sequentially slidably connected to a second sliding plate 602, a third sliding plate 603, a fourth sliding plate 604 and a fifth sliding plate 605, the second sliding plate 602, the third sliding plate 603, the fourth sliding plate 604 and the fifth sliding plate 605 simultaneously monitor and stretch the lithium battery diaphragm, a longitudinal monitoring area of the lithium battery diaphragm is increased, the stretching effect is further improved, one side of the first sliding plate 601 that is centrally disposed close to the fixed rod 505 is fixedly connected with a telescopic frame 606, the telescopic frame 606 is fixedly connected with the second sliding plate 602, the third sliding plate 603, the fourth sliding plate 604 and the fifth sliding plate 605, the second sliding plate 602, the third sliding plate 603, the fourth sliding plate 604 and the fifth sliding plate 605 are simultaneously moved forward and backward, the whole process of the lithium battery diaphragm is monitored, the monitoring area and the effect are further increased, the stretching quality of the lithium battery diaphragm is improved, two adjacent first sliding plates 601 are fixedly connected, the opposite sides 607 far away from the first sliding plate 601 are far from the opposite side, the second sliding plate 602 and the limit groove 602 are matched with the limit groove 602, the second sliding plate 605 are not matched with the second sliding plate 602, the second sliding plate 605 is further extended, the adjacent L is further extended, and the limiting groove is further extended, the stretching area is provided with the adjacent L-shaped, and the adjacent sliding plate is further extended, and is further extended, the adjacent L is extended, and is extended, the adjacent to the limiting groove is shaped and is extended.
When the diaphragm of the lithium battery is transversely pulled, a worker starts two electric shafts 506, the two electric shafts 506 rotate in opposite directions, the two electric shafts 506 respectively drive a transmission component 504 connected with the two electric shafts to rotate, the transmission component 504 drives an upper fixing rod 505 and an upper part of the upper fixing rod to move together, a limiting slide rod 607 slides in a limiting groove of a limiting cover 503, when the limiting slide rod 607 slides in a folding groove of an adjacent area of the limiting cover 503, the limiting slide rod 607 continuously moves, the limiting slide rod 607 is limited by the folding groove of the adjacent area of the limiting cover 503, the front limiting slide rod and the rear limiting slide rod 607 are gradually separated, the upper limiting slide rod 607 and the lower limiting slide rod 607 are gradually close, the limiting slide rod 607 drives a first slide plate 601 connected with the limiting slide rod 607 to move together, the first slide plate 601 drives a telescopic frame 606 to move, the telescopic frame 606 is gradually unfolded, the telescopic frame 606 drives a second slide plate 602, a third slide plate 603, a fourth slide plate 604 and a fifth slide plate 605 to slide along the fixing rod 505, the first slide plate 601, the second slide plate 602, the third slide plate 603 and the fifth slide plate 605 are gradually stretched in the front and rear of the battery are gradually increased, the distance between the upper slide plate and the fourth slide plate 605 is gradually increased, the lithium battery is gradually stretched, and the diaphragm is uniformly stretched, and the diaphragm is not stretched, and the diaphragm is uniformly stretched, and the diaphragm is gradually stretched.
The L-shaped rods staggered with each other on the lower sides of the first slide plate 601, the second slide plate 602, the third slide plate 603, the fourth slide plate 604 and the fifth slide plate 605 monitor the non-uniform stretching area of the lithium battery diaphragm in real time in the transverse pulling process and stretch the non-uniform stretching area again, when the non-uniform stretching situation occurs, the L-shaped rods on the upper side and the lower side stretch the non-uniform stretching area again, the monitoring range is enlarged, the distance between the first slide plate 601, the second slide plate 602, the third slide plate 603, the fourth slide plate 604 and the fifth slide plate 605 on the upper side and the lower side is minimized along with the sliding of the limit slide rod 607, the first slide plate 601, the second slide plate 602, the third slide plate 603, the fourth slide plate 604 and the fifth slide plate 605 on the upper side and the lower side are mutually separated, the limit slide rod 607 is prevented from being broken due to the steering, and the two electric shafts 506 are closed by workers after the stretching of the lithium battery diaphragm is completed.
Examples
On the basis of embodiment 2, as shown in fig. 16 and 17, the device further comprises a second hydraulic rod 701, the second ear plate 502 is provided with an arc groove in limit fit with the transmission shaft 507, the center point of the arc groove coincides with the rotation center of the limit cover 503, the limit cover 503 is rotationally connected with the first ear plate 501, the limit cover 503 is slidingly connected with the second ear plate 502, the second hydraulic rod 701 is fixedly connected with the fixed shell 202, the flexible end rigid coupling of second hydraulic stem 701 has U-shaped plate 702, U-shaped plate 702 and fixed shell 202 sliding connection, U-shaped plate 702 be provided with transmission shaft 507 limit sliding fit's two chute, the chute is from left to right from the middle tilt up and down, makes the distance between upper and lower both sides first slide 601, second slide 602, third slide 603, fourth slide 604 and the fifth slide 605 be the thickness of lithium cell diaphragm current tensile state all the time, guarantees the monitoring effect, improves product quality.
When the lithium battery diaphragm with the same width and different thicknesses is required to be stretched, a worker opens the second hydraulic rod 701, the telescopic end of the second hydraulic rod 701 drives the U-shaped plate 702 to move rightwards, the chute of the U-shaped plate 702 and the arc-shaped groove of the second lug plate 502 jointly carry out height adjustment on the transmission shaft 507, the transmission shaft 507 slides in the arc-shaped groove of the second lug plate 502, the transmission shaft 507 drives the limiting cover 503 and the upper part of the limiting cover to integrally rotate by taking the axis of the electric shaft 506 as a rotation center, the distance between the first sliding plate 601, the second sliding plate 602, the third sliding plate 603, the fourth sliding plate 604 and the fifth sliding plate 605 on the upper side and the lower side of the lithium battery diaphragm is ensured when the lithium battery diaphragm with the same width and different thicknesses is stretched, the thickness of the lithium battery diaphragm is always the current stretching state, the monitoring effect is ensured, the product quality is improved, and the worker closes the second hydraulic rod 701 after the adjustment is finished.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related arts are included in the scope of the present invention.
Claims (9)
1. The utility model provides a lithium cell diaphragm preparation is with two devices that draw, including first chassis (101), first chassis (101) symmetry is provided with first hydraulic stem (102), telescopic end rigid coupling of first hydraulic stem (102) has adjustment slider (103), adjustment slider (103) and first chassis (101) sliding connection, rotationally be connected with squeeze roll (104) between symmetrical adjustment slider (103), first chassis (101) are rotationally connected with a plurality of motorized rolls (105), motorized roll (105) are staggered, leave the clearance between motorized roll (105) and the adjacent squeeze roll (104), first chassis (101) rigid coupling has heating cabinet (106) that are used for heating the diaphragm, characterized in that still includes guiding mechanism that are used for guiding the diaphragm edge, guiding mechanism sets up in first chassis (101) one side, one side rigid coupling that is kept away from first chassis (101) has second chassis (201), rotationally be connected with fixed shell (202) between symmetrical fixed shell (202) in proper order, rotationally be connected with first transport roll (203) and second transport roll (204) in proper order, fixed shell (205) are provided with in-line slide (206) and second slide (206) fixed connection in-way (207) are provided with first slide (207), the transverse pulling unit (205) is circumferentially provided with a clamping mechanism for fixing the edge of the diaphragm; the clamping mechanism comprises a U-shaped block (401), the U-shaped block (401) is fixedly connected to a transverse pulling unit (205), the U-shaped block (401) is symmetrically and slidingly connected with a U-shaped sliding rod (402), the U-shaped sliding rod (402) is rotationally connected with a first contact column (403), the first contact column (403) is contacted with a second slide way (207), the U-shaped block (401) is symmetrically and rotationally connected with a second contact column (404), the second contact column (404) rolls in the first slide way (206), one side, far away from the first contact column (403), of the U-shaped sliding rod (402) is fixedly connected with a rotary table (405), the rotary table (405) is rotationally connected with a first clamping plate (406), the first clamping plate (406) is fixedly connected with a limit sliding block (408) through an elastic block (407), the U-shaped block (401) is fixedly connected with a guide column (409), the guide column (409) is in sliding connection with the limit sliding block (408), and a first elastic element (410) is fixedly connected between the limit sliding block (408).
2. The double-pull device for preparing the lithium battery diaphragm according to claim 1, wherein the guide mechanism comprises a third chassis (301), the third chassis (301) is fixedly connected with the first chassis (101), the third chassis (301) is fixedly connected with the second chassis (201), electric guide rollers (302) which are distributed at equal intervals are symmetrically arranged on the third chassis (301), the electric guide rollers (302) are distributed in a splayed mode, opposite ends of the electric guide rollers (302) are inclined towards a direction close to the fixed shell (202), and the third chassis (301) is fixedly connected with a supporting plate (303).
3. The double-pull device for preparing a lithium battery diaphragm according to claim 1, wherein the first clamping plate (406) is slidably connected with the second clamping plate (411), a sliding pin (412) is fixedly connected to one side, close to the first clamping plate (406), of the second clamping plate (411), the sliding pin (412) is slidably connected with the first clamping plate (406), and a second elastic element (413) is fixedly connected between the sliding pin (412) and the first clamping plate (406).
4. The double-pull device for manufacturing a lithium battery separator according to claim 1, wherein adjacent sides of the symmetrical first clamping plates (406) are made of elastic materials, and adjacent sides of the symmetrical second clamping plates (411) are made of elastic materials.
5. The double-pulling device for preparing the lithium battery diaphragm according to claim 1, further comprising a monitoring stretching mechanism, wherein the monitoring stretching mechanism is fixedly connected to a symmetrical fixing shell (202), the monitoring stretching mechanism comprises first earplates (501) which are symmetrically distributed, the symmetrical first earplates (501) are fixedly connected to the fixing shell (202), second earplates (502) are symmetrically fixedly connected to the fixing shell (202), limiting covers (503) on the same side of the fixing shell (202) are symmetrically arranged on the fixing shell (202), the limiting covers (503) are fixedly connected with the first earplates (501) and the second earplates (502) through U-shaped bent rods, transmission components (504) for transmitting power are arranged in the limiting covers (503), fixing rods (505) are fixedly connected between the transmission components (504) on the same side of the fixing shell (202) in the circumferential direction, electric shafts (506) and transmission shafts (507) are fixedly connected to two ends of the transmission components (504) on the same side of the fixing shell (202), and the electric shafts (506) are rotationally connected with the limiting covers (507), and the limiting covers (503) are symmetrically arranged to pull the sliding plates (505).
6. The double-pull device for manufacturing the lithium battery diaphragm according to claim 5, wherein adjacent side surfaces of the limiting cover (503) are inclined surfaces, symmetrical inclined surfaces are gradually far away from one end, close to the first lug plate (501), to the other end, of the limiting cover (503), limiting grooves for guiding movement of the sliding plate assembly are formed in the inclined surfaces of the limiting cover (503), the part, close to the area of the fixing shell (202), of the limiting grooves is a folding groove, and the distance between the folding groove and the lower side surface of the limiting cover (503) is reduced firstly and then increased along the direction of the inclined surfaces of the limiting cover (503).
7. The double-pulling device for preparing the lithium battery diaphragm according to claim 5, wherein the sliding plate assembly comprises a first sliding plate (601) which is arranged in a central symmetry mode, the first sliding plate (601) which is in a central symmetry mode is connected with a fixed rod (505) in a sliding mode, the fixed rod (505) is sequentially connected with a second sliding plate (602), a third sliding plate (603), a fourth sliding plate (604) and a fifth sliding plate (605) in a sliding mode, a telescopic frame (606) is fixedly connected to one side, close to the fixed rod (505), of the first sliding plate (601) which is in a central symmetry mode, the telescopic frame (606) is fixedly connected with the second sliding plate (602), the third sliding plate (603), the fourth sliding plate (604) and the fifth sliding plate (605), the adjacent first sliding plates (601) are fixedly connected, and limiting sliding rods (607) which are in limiting fit with limiting grooves of a limiting cover (503) are fixedly connected to the opposite sides of the first sliding plates (601) which are far away from each other.
8. The double-pull device for preparing a lithium battery diaphragm according to claim 7, wherein the sides of the first sliding plate (601), the second sliding plate (602), the third sliding plate (603), the fourth sliding plate (604) and the fifth sliding plate (605) far away from the fixed rod (505) are respectively provided with L-shaped rods, adjacent L-shaped rods are staggered with each other, and the adjacent L-shaped rods are in sliding connection.
9. The double-pulling device for preparing the lithium battery diaphragm according to claim 5, further comprising a second hydraulic rod (701), wherein the second lug plate (502) is provided with an arc-shaped groove in limit fit with the transmission shaft (507), the limit cover (503) is rotationally connected with the first lug plate (501), the limit cover (503) is slidingly connected with the second lug plate (502), the second hydraulic rod (701) is fixedly connected with the fixed shell (202), the telescopic end of the second hydraulic rod (701) is fixedly connected with a U-shaped plate (702), the U-shaped plate (702) is slidingly connected with the fixed shell (202), and the U-shaped plate (702) is provided with a chute in limit sliding fit with the transmission shaft (507).
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| CN202310380909.3A CN116373279B (en) | 2023-04-11 | 2023-04-11 | Double-pulling device for preparing lithium battery diaphragm |
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| CN117048031B (en) * | 2023-10-10 | 2023-12-19 | 龙华相位新材料(绵阳)股份有限公司 | Optical film stretching device and stretching method |
| CN117799150B (en) * | 2024-02-28 | 2024-05-07 | 陕西宝昱科技工业股份有限公司 | Plastic film stretch forming equipment and plastic film stretch forming method |
| CN118386532B (en) * | 2024-06-27 | 2024-08-27 | 天津东皋膜技术有限公司 | Lithium battery diaphragm extension device for wet process |
| CN118544606B (en) * | 2024-07-29 | 2024-09-24 | 吉林诺德高科新材料有限公司 | Automotive glass PVB intermediate coat former |
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