CN118032512A - Multidirectional tensile strength detection device for aluminum foil and application of multidirectional tensile strength detection device in lithium battery preparation - Google Patents
Multidirectional tensile strength detection device for aluminum foil and application of multidirectional tensile strength detection device in lithium battery preparation Download PDFInfo
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- 239000011888 foil Substances 0.000 title claims abstract description 152
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 149
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 149
- 238000001514 detection method Methods 0.000 title claims abstract description 74
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 15
- 230000007246 mechanism Effects 0.000 claims abstract description 90
- 238000012360 testing method Methods 0.000 claims abstract description 16
- 239000005030 aluminium foil Substances 0.000 claims description 17
- 230000002457 bidirectional effect Effects 0.000 claims description 14
- 230000003028 elevating effect Effects 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 abstract description 5
- 238000011156 evaluation Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 10
- 238000013519 translation Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000011889 copper foil Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000009864 tensile test Methods 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000246 remedial effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The application relates to the technical field of aluminum foil processing, in particular to an aluminum foil multidirectional tensile strength detection device and application thereof in lithium battery preparation, wherein the aluminum foil multidirectional tensile strength detection device comprises a vertical frame, a positive clamping mechanism, an unfolding mechanism and an oblique clamping detection mechanism, the positive clamping mechanism is arranged in the vertical frame, and the positive clamping mechanism is provided with a first clamping groove; the unfolding mechanism is arranged in the vertical frame; the oblique clamp detection mechanism is arranged on one side of the vertical frame, and is provided with a second clamping groove and a detection component, the positive clamp mechanism is arranged in the vertical frame to clamp the longitudinally extending aluminum foil, then the aluminum foil is unfolded upwards through the unfolding mechanism, the oblique clamp detection mechanism can obliquely clamp the unfolded aluminum foil to the horizontal direction, then the detection component is used for detecting the stress state when the aluminum foil is obliquely stretched, the tensile strength of the aluminum foil can be more comprehensively evaluated through an oblique stretching test, the longitudinal strength of a foil is considered, the oblique strength is considered, and the more comprehensive performance evaluation is provided.
Description
Technical Field
The invention relates to the technical field of aluminum foil processing, in particular to an aluminum foil multidirectional tensile strength detection device and application thereof in lithium battery preparation.
Background
The conventional test for the tensile properties of the copper foil and the aluminum foil for the lithium ion battery is characterized in that the conventional multifunctional tensile tester is used for stretching along the longitudinal direction or the transverse direction to obtain the tensile strength and the elongation percentage of the copper foil and the aluminum foil, but the test method has certain limitations and cannot reflect the tensile state generated by local stress of the copper foil and the aluminum foil in the actual use process of the lithium ion battery.
Meanwhile, the aluminum foil is thinner, when the existing tensile strength detection device is used, if the aluminum foil is in a bending state, the aluminum foil needs to be leveled firstly, then the tensile strength is judged through the numerical values before detection and after the aluminum foil is pulled off, the pressure sensor starts to detect in the process of stretching the aluminum foil, and the time when the aluminum foil is in the stretching state is difficult to judge, so that the numerical value initially detected by the sensor is difficult to ensure accuracy, and the detection result is error.
Therefore, the aluminum foil needs to be flattened when being clamped, and meanwhile, the detection device can apply a pulling force with any included angle to the aluminum foil, so that the tensile strength of the aluminum foil is further detected.
Chinese patent publication No. CN115876584a discloses a tensile strength detection device for aluminum foil processing, which comprises a base, fixedly connected with slide bar between the base both sides wall, set up T straight flute in the slide bar, the slide bar top is provided with places the board, place the board pass through landing leg fixed connection in the base top, on the slide bar and be located place the board both sides and be provided with detection mechanism.
The device passes through power unit drive translation mechanism operation, translation mechanism drives detection mechanism and keeps away from each other, detection mechanism drives fixture and keeps away from each other, after the aluminium foil is stretched, through the elasticity adjusting part in the power unit, make power unit unable drive translation mechanism operation of continuing, then the aluminium foil is in the stretching state, then reuse elasticity adjusting part, make power unit continue drive translation mechanism operation, until the aluminium foil is broken by the stretch-break, detect tensile strength through detection mechanism, however in the in-service use, the aluminium foil can receive the tensile force from different directions, consequently, the tensile force of aluminium foil in the different directions needs to be detected, nevertheless the device can't detect the atress state when the aluminium foil is stretched by the slant.
Disclosure of Invention
To above-mentioned problem, provide aluminium foil multidirectional tensile strength detection device, fix the one end of aluminium foil on positive clamp mechanism, then extend the aluminium foil along vertically through expansion mechanism, pull the aluminium foil behind the oblique clamp detection mechanism slant centre gripping aluminium foil, through adjusting the clamping angle of oblique clamp detection mechanism, realize the detection to the aluminium foil in the different directions to this has solved the problem of the stress state when current detection device can't detect the aluminium foil by the slant stretching.
In order to solve the problems in the prior art, the invention provides an aluminum foil multidirectional tensile strength detection device which comprises a vertical frame, a positive clamping mechanism, an unfolding mechanism and an oblique clamping detection mechanism, wherein the positive clamping mechanism is arranged in the vertical frame and is provided with a first clamping groove extending along the width direction of the aluminum foil; the unfolding mechanism is arranged in the vertical frame in a longitudinally moving manner, and can upwards unfold the aluminum foil from the top end of the positive clamping mechanism; the oblique clamp detection mechanism is arranged on one side of the vertical frame and is provided with a second clamping groove for clamping the aluminum foil at an included angle with the horizontal direction, and a detection assembly for detecting acting force when the second clamping groove stretches the aluminum foil relative to the first clamping groove.
Preferably, the positive clamping mechanism comprises a vertical seat and a clamping mechanism, wherein the clamping mechanism comprises a clamping block, a screw rod adjusting piece and a bidirectional screw rod, and the vertical seat is arranged in the vertical frame; the two clamping blocks are symmetrically and movably arranged in the vertical seat, and a first clamping groove is formed between the two clamping blocks; the screw rod adjusting piece comprises a moving plate, and the two moving plates are respectively arranged at the outer sides of the two clamping blocks in a moving way; the two-way screw rod penetrates through the two clamping blocks at the same time and is rotationally arranged on the vertical seat, and two ends of the two-way screw rod penetrate through the first moving plate and the second moving plate respectively and are in threaded connection with the first moving plate and the second moving plate; the center end of the bidirectional screw rod is provided with a grooved wheel, and the bottom end of the aluminum foil can be abutted on the annular groove of the grooved wheel.
Preferably, be provided with the locating lever that extends along aluminium foil thickness direction on the upright, the locating lever slides and runs through the movable plate, and the one end of movable plate is provided with the connecting cylinder that slides and runs through the grip block, and the inner of connecting cylinder is provided with the spacing ring, and the lead screw regulating part still includes the lead screw elastic part, and the lead screw elastic part sets up on the connecting cylinder, and is located simultaneously between movable plate and the grip block.
Preferably, a lifting frame capable of moving longitudinally is arranged in the vertical frame, the unfolding mechanism is arranged on the lifting frame and comprises an elastic frame and an abutting wheel which are symmetrically arranged, the elastic frame is arranged in the lifting frame, and the abutting wheel is rotationally arranged on the elastic frame; the outside at two grip block top is provided with the inclined plane, and in the initial state, the butt wheel is in butt elasticity on the inclined plane.
Preferably, the vertical frame is internally provided with a polish rod extending longitudinally, a lifting screw rod and a motor, the polish rod penetrates through the lifting frame in a sliding manner, the lifting screw rod penetrates through the lifting frame and is in threaded connection with the lifting frame, the motor is arranged at the bottom end of the vertical frame, and an output shaft of the motor is coaxially connected with the lifting screw rod.
Preferably, a plurality of pin rods are arranged between the elastic frame and the lifting frame, and pin rod elastic pieces are arranged on the pin rods.
Preferably, the oblique clamp detection mechanism further comprises a moving frame and an oblique clamp assembly, the moving frame is arranged on one side of the vertical frame in a sliding mode along the horizontal direction, the oblique clamp assembly is arranged in the moving frame in a sliding mode along the longitudinal direction, the detection mechanism is arranged in the moving frame and located at the bottom of the oblique clamp assembly, and the detection end of the detection mechanism is connected with the oblique clamp assembly.
Preferably, the oblique clamping assembly comprises a lifting seat, a clamping frame, a clamping rod, a first connecting rod, a second connecting rod, an electric push rod, a third connecting rod, a moving block, a fourth connecting rod and an adjusting screw rod; the lifting seat is arranged in the movable frame in a longitudinally movable manner; one end of the clamping frame is provided with a rotating pin, the rotating pin extends along the thickness direction of the aluminum foil, the rotating pin is rotationally connected with the lifting seat, the end part of the clamping frame deflects relative to the lifting seat by taking the rotating pin as an axis, one side of the clamping frame, deviating from the moving frame, is provided with two clamping rods which are symmetrically arranged in the openings of the clamping frame, and a second clamping groove is formed between the two clamping rods; the first connecting rod and the second connecting rod are arranged in parallel, one ends of the first connecting rod and the second connecting rod are rotationally connected with the opening side of the clamping frame, and the other ends of the first connecting rod and the second connecting rod are rotationally connected with the back side of the clamping rod; the electric push rod is arranged in the clamping frame, and an output shaft of the electric push rod extends along the length direction of the clamping rod; the two ends of the third connecting rod are respectively and rotatably connected with the middle part of the second connecting rod and the output shaft of the electric push rod, and when the output shaft of the electric push rod makes telescopic movement, the third connecting rod drives the second connecting rod and the first connecting rod to deflect relative to the opening of the clamping frame; the moving block is arranged in the lifting seat in a sliding manner along the horizontal direction; the two ends of the fourth connecting rod are respectively and rotatably connected with the end part of the clamping rod, which faces the lifting seat, and the moving block, when the moving block moves along the horizontal direction, the end part of the fourth connecting rod rotates, and the clamping rod is driven to deflect by taking the rotating pin as a rotating point; the adjusting screw rod is rotationally arranged in the lifting seat, penetrates through the moving block and is in threaded connection with the moving block.
Preferably, the detection assembly comprises a fixed table, an air cylinder and a pressure detection sensor, wherein the fixed table is fixedly arranged at the bottom of the lifting seat; the air cylinder is arranged at the bottom end of the fixed table, and the output shaft of the air cylinder is opposite to the fixed table; the pressure detection sensor is arranged between the output shaft of the air cylinder and the lifting seat.
The invention also relates to application of the aluminum foil multidirectional tensile strength detection device in lithium battery preparation, and the aluminum foil multidirectional tensile strength detection device is used for detecting the aluminum foil.
Compared with the prior art, the application has the beneficial effects that:
1. According to the application, the positive clamping mechanism is arranged in the vertical frame to clamp the longitudinally extending aluminum foil, then the aluminum foil is upwards unfolded through the unfolding mechanism, the oblique clamping detection mechanism can obliquely clamp the unfolded aluminum foil to the horizontal direction, then the detection assembly is used for detecting the stress state when the aluminum foil is obliquely stretched, the tensile strength of the aluminum foil can be more comprehensively evaluated through an oblique stretching test, the longitudinal strength of the foil is considered, the oblique strength is considered, and the more comprehensive performance evaluation is provided;
2. The application can help to know the limit strain capacity of the aluminum foil when the aluminum foil is stressed in an oblique direction through an oblique tensile test, and can identify the potential weak links of the aluminum foil material in a non-standard direction through the oblique tensile test, thereby facilitating the taking of remedial and improved measures and ensuring that the aluminum foil product still meets the specified performance requirements when stressed in multiple directions;
3. According to the application, the aluminum foil is elastically clamped by the first clamping block and the second clamping block, so that the clamping force on the aluminum foil can be more uniformly distributed, thereby avoiding stress concentration in a clamping area and reducing the risk of damage or fracture of the aluminum foil caused by the stress concentration; the aluminum foil clamping device can adapt to tiny unevenness of the surface of the aluminum foil, so that more stable clamping is provided, and the positioning accuracy and reliability of the aluminum foil in the processing or testing process are improved;
4. In the application, as the first elastic frame and the second elastic frame are uniformly and elastically distributed, not only can stable clamping be realized, but also the aluminum foil can be prevented from being damaged due to overlarge strength. In addition, because the aluminum foil is uniformly clamped, the aluminum foil can be prevented from being skewed in the flattening process;
5. The oblique clamping assembly can obliquely clamp the aluminum foil relative to the positive clamping mechanism and apply an oblique-direction pulling force to the aluminum foil, so that the limit strain capacity of the aluminum foil when the aluminum foil is obliquely stressed is detected, and the tensile property of the aluminum foil is comprehensively detected; the oblique clamp assembly can realize continuous adjustment, and meanwhile, scales are arranged, so that the pulling angle can be adjusted and observed in real time;
6. According to the application, the aluminum foil is flattened, and then the stretching detection is carried out, so that the flattening and the detection process are completely separated, the accuracy of the value initially detected by the sensor can be ensured, and the error is greatly reduced.
Drawings
Fig. 1 is a perspective view of an aluminum foil multi-directional tensile strength testing device at a first viewing angle;
fig. 2 is a front view of the multi-directional tensile strength detecting apparatus of aluminum foil;
Fig. 3 is a perspective view of the multi-directional tensile strength detecting means of aluminum foil at a second view angle;
FIG. 4 is a perspective view of a positive grip mechanism in the aluminum foil multidirectional tensile strength detecting apparatus;
FIG. 5 is a partial perspective exploded view of the positive grip mechanism in the aluminum foil multidirectional tensile strength detecting apparatus;
FIG. 6 is a perspective view of the unfolding mechanism in the multi-directional tensile strength testing device for aluminum foil;
FIG. 7 is a perspective view of the diagonal clamp detection mechanism in the multi-directional tensile strength detection device of aluminum foil at a first view angle;
FIG. 8 is an enlarged view of a portion of FIG. 7 at A;
fig. 9 is a perspective view of the diagonal clamp detection mechanism in the multi-directional tensile strength detection device for aluminum foil at a second view angle.
The reference numerals in the figures are: 1. a vertical frame; 11. a polish rod; 12. lifting the screw rod; 13. a motor; 14. a lifting frame; 2. a positive clamping mechanism; 21. a vertical seat; 22. a first clamping block; 23. a second clamping block; 24. a first screw rod adjusting member; 241. a first moving plate; 242. a first elastic member; 243. a first connecting cylinder; 2431. a first stop collar; 25. a second screw rod adjusting piece; 251. a second moving plate; 252. a second elastic member; 253. a second connecting cylinder; 2531. a second limiting ring; 26. a two-way screw rod; 27. a sheave; 28-positioning rod; 3. a deployment mechanism; 31. a first elastic frame; 311. a first pin; 312. a third elastic member; 32. a second elastic frame; 321. a second pin; 322. a fourth elastic member; 33. a first abutment wheel; 34. a second abutment wheel; 4. a skew clip detection mechanism; 41. a detection assembly; 411. a fixed table; 412. a cylinder; 413. a pressure detection sensor; 42. a moving rack; 43. a diagonal clamp assembly; 431. a lifting seat; 432. a clamping frame; 433. a clamping rod; 434. a first link; 435. a second link; 436. an electric push rod; 437. a third link; 438. a moving block; 439. a fourth link; 441. and adjusting the screw rod.
Detailed Description
The invention will be further described in detail with reference to the drawings and the detailed description below, in order to further understand the features and technical means of the invention and the specific objects and functions achieved.
As shown in fig. 1, 2 and 3, the present application provides: the multi-directional tensile strength detection device for the aluminum foil comprises a vertical frame 1, a positive clamping mechanism 2, an unfolding mechanism 3 and an oblique clamping detection mechanism 4, wherein the positive clamping mechanism 2 is arranged in the vertical frame 1, and the positive clamping mechanism 2 is provided with a first clamping groove extending along the width direction of the aluminum foil; the unfolding mechanism 3 is arranged in the vertical frame 1 in a longitudinally moving way, and the unfolding mechanism 3 can upwards unfold the aluminum foil from the top end of the positive clamping mechanism 2; the oblique clamp detection mechanism 4 is arranged on one side of the vertical frame 1, and the oblique clamp detection mechanism 4 is provided with a second clamping groove which is used for clamping the aluminum foil at an included angle with the horizontal direction, and a detection component 41 which is used for detecting acting force when the second clamping groove stretches the aluminum foil relative to the first clamping groove.
When the aluminum foil stretching device is used, the bottom end of the aluminum foil is arranged in the first clamping groove of the positive clamping mechanism 2, the unfolding mechanism 3 unfolds the aluminum foil upwards from the top end of the positive clamping mechanism, the aluminum foil is ensured to be in an unfolded state when being clamped by the oblique clamping detection mechanism 4, the second clamping groove of the oblique clamping detection mechanism penetrates through the aluminum foil and then obliquely clamps the aluminum foil, the second clamping groove stretches the aluminum foil in a direction away from the first clamping groove, and meanwhile, the detection assembly 41 can detect acting force required to be overcome by stretching movement of the second clamping groove, so that oblique stretching performance of the aluminum foil is detected.
In this embodiment, by installing the positive clamping mechanism 2 in the vertical frame 1 to clamp the longitudinally extending aluminum foil, then expanding the aluminum foil upwards by the expanding mechanism 3, the oblique clamping detecting mechanism 4 can clamp the expanded aluminum foil obliquely to the horizontal direction, then detecting the stress state when the aluminum foil is obliquely stretched by the detecting component 41, the tensile strength of the aluminum foil can be more comprehensively evaluated by the oblique tensile test, and not only the longitudinal strength of the foil but also the oblique strength are considered, thereby providing more comprehensive performance evaluation.
As shown in fig. 4 and 5, the positive clamping mechanism 2 includes a stand 21, a first clamping block 22, a second clamping block 23, a first screw rod adjusting member 24, a second screw rod adjusting member 25, and a bidirectional screw rod 26, the stand 21 being provided in the stand 1; the first clamping block 22 and the second clamping block 23 are arranged in the vertical seat 21 in a way of opposite or back-to-back movement, and a first clamping groove is formed between the first clamping block 22 and the second clamping block 23; the first screw rod adjusting member 24 includes a first moving plate 241 connected to the first clamping block 22, the second screw rod adjusting member 25 includes a second moving plate 251 connected to the second clamping block 23, and the first moving plate 241 and the second moving plate 251 are disposed outside the first clamping block 22 and the second clamping block 23, respectively, so as to move toward or away from each other; the bidirectional screw 26 penetrates the first clamping block 22 and the second clamping block 23 and is rotatably provided on the stand 21, and both ends of the bidirectional screw 26 penetrate the first moving plate 241 and the second moving plate 251, respectively, and are threadedly connected thereto.
It should be noted that, the two clamping blocks are a first clamping block 22 and a second clamping block 23, and the two screw adjusting members are a first screw adjusting member 24 and a second screw adjusting member 25.
The center end of the bidirectional screw rod 26 is provided with a grooved wheel 27, and the bottom end of the aluminum foil can be abutted on the annular groove of the grooved wheel 27, so that the aluminum foil is positioned.
In order to clamp aluminum foils with different thicknesses, the first clamping block 22 and the second clamping block 23 are oppositely or reversely arranged on the vertical seat 21, the first moving plate 241 is slidably arranged on one side of the first clamping block 22 opposite to the second clamping block 23, the second moving plate 251 is slidably arranged on one side of the second clamping block 23 opposite to the first clamping block 22, and then the bidirectional screw 26 is rotatably arranged in the vertical seat 21, so that two ends of the bidirectional screw 26 penetrate through the first moving plate 241 and the second moving plate 251 respectively and are in threaded connection with the first moving plate and the second moving plate 251, and when the bidirectional screw 26 is rotated, the first moving plate 241 and the second moving plate 251 can oppositely or reversely move to drive the first clamping block 22 and the second clamping block 23 to oppositely or reversely move, and then the aluminum foils with different thicknesses are clamped, so that the compatibility of the device is improved, the applicability of the device is improved, and more detection requirements are met.
As shown in fig. 5, the stand 21 is provided with positioning rods 28 extending along the thickness direction of the aluminum foil, the positioning rods 28 are symmetrically distributed on two sides of the bidirectional screw rod 26, the first screw rod adjusting member 24 further comprises a first elastic member 242, the positioning rods 28 slidably penetrate through the first moving plate 241, one end of the first moving plate 241 is provided with a first connecting cylinder 243 slidably penetrating through the first clamping block 22, the inner end of the first connecting cylinder 243 is provided with a first limiting ring 2431, the first elastic member 242 is arranged on the first connecting cylinder 243, and the first elastic member 242 is positioned between the first moving plate 241 and the first clamping block 22; the second screw rod adjusting member 25 further includes a second elastic member 252, the positioning rod 28 slidably penetrates through the second moving plate 251, one end of the second moving plate 251 is provided with a second connecting cylinder 253 slidably penetrating through the second clamping block 23, the inner end of the second connecting cylinder 253 is provided with a second limiting ring 2531, the second elastic member 252 is arranged on the second connecting cylinder 253, and the second elastic member 252 is located between the second moving plate 251 and the inner side of the second clamping block 23; both ends of the bidirectional screw rod 26 penetrate through the first moving plate 241 and the second moving plate 251, respectively, and are screw-coupled thereto.
When the bidirectional screw rod 26 rotates, the first moving plate 241 and the second moving plate 251 move oppositely or back to back, meanwhile, the first moving plate 241 drives the first clamping block 22 to abut against one side of the aluminum foil through the first connecting cylinder 243 and the first elastic piece 242, and the second moving plate 251 drives the second clamping block 23 to abut against the other side of the aluminum foil through the second connecting cylinder 253 and the second elastic piece 252, so that the first clamping block 22 and the second clamping block 23 elastically clamp the aluminum foil, and the clamping force on the aluminum foil can be more uniformly distributed, thereby avoiding stress concentration in the clamping area and reducing the risk of damage or fracture of the aluminum foil caused by the stress concentration; and can adapt to the tiny unevenness on the surface of the aluminum foil, thereby providing more stable clamping and increasing the positioning precision and reliability of the aluminum foil in the processing or testing process.
As shown in fig. 6, the vertical frame 1 is provided with a vertically movable lifting frame 14, the expanding mechanism 3 is provided on the lifting frame 14, the expanding mechanism 3 comprises a first elastic frame 31, a second elastic frame 32, a first abutting wheel 33 and a second abutting wheel 34, the first elastic frame 31 and the second elastic frame 32 are symmetrically provided in the lifting frame 14 in opposite directions or opposite directions, the first abutting wheel 33 is rotatably provided on the first elastic frame 31, the second abutting wheel 34 is rotatably provided on the second elastic frame 32, a first inclined surface is provided outside the top end of the first clamping block 22, a second inclined surface is provided outside the top end of the second clamping block 23, and in an initial state, the first abutting wheel 33 is elastically abutted on the first inclined surface, and the second abutting wheel 34 is elastically abutted on the second inclined surface.
In order to expand the aluminum foil on the positive clamping mechanism 2, the first abutting wheel 33 is elastically abutted on the first inclined surface at the top end of the first clamping block 22 under the action of the first elastic frame 31, the second abutting wheel 34 is elastically abutted on the second inclined surface at the top end of the second clamping block 23 under the action of the second elastic frame 32, when the lifting frame 14 moves upwards, the first abutting wheel 33 and the second abutting wheel 34 move upwards and simultaneously abut on two sides of the aluminum foil and roll upwards, in the process, the first abutting wheel 33 and the second abutting wheel 34 can expand the aluminum foil upwards, the phenomenon that the aluminum foil is loosened when being clamped obliquely is avoided, and the accuracy of detecting the tensile property is further improved.
As shown in fig. 3, the vertical frame 1 is provided with a polish rod 11 extending longitudinally, a lifting screw rod 12 and a motor 13, the polish rod 11 penetrates through the lifting frame 14 in a sliding manner, the lifting screw rod 12 penetrates through the lifting frame 14 and is in threaded connection with the lifting frame 14, the motor 13 is arranged at the bottom end of the vertical frame 1, and an output shaft of the motor 13 is coaxially connected with the lifting screw rod 12.
In order to enable the lifting frame 14 to drive the first abutting wheel 33 and the second abutting wheel 34 to move upwards, the motor 13 is started to enable the lifting frame to drive the lifting screw rod 12 to rotate, the lifting screw rod 12 is in threaded connection with the lifting frame 14, the lifting frame 14 is arranged on the polished rod 11 in a sliding mode, the lifting frame 14 can be driven to stably lift by rotation of the lifting screw rod 12, and accordingly the height of the lifting frame 14 is adjusted, and therefore the aluminum foil is unfolded.
As shown in fig. 6, a first pin 311 that slides through the lifting frame 14 is disposed on a side of the first elastic frame 31 facing away from the second elastic frame 32, the first pin 311 is provided with a plurality of pins, the pins are uniformly distributed along the first elastic frame 31, third elastic pieces 312 are disposed on the first pin 311, a second pin 321 that slides through the lifting frame 14 is disposed on a side of the second elastic frame 32 facing away from the first elastic frame 31, the second pin 321 is provided with a plurality of pins, the pins are uniformly distributed along the second elastic frame 32, and fourth elastic pieces 322 are disposed on the second pin 321.
The first elastic frame 31 is slidably disposed in the lifting frame 14 by the first pin 311, the second elastic frame 32 is slidably disposed in the lifting frame 14 by the second pin 321, the third elastic member 312 enables the first abutting wheel 33 on the first elastic frame 31 to elastically abut on the outer side of the aluminum foil, and the fourth elastic member 322 enables the second abutting wheel 34 on the second elastic frame 32 to elastically abut on the back side of the aluminum foil, so that the aluminum foil can be unfolded when the first abutting wheel 33 and the second abutting wheel 34 relatively abut on both sides of the aluminum foil and move upward. Because the third elastic member 312 and the fourth elastic member 322 are uniformly distributed, the aluminum foil can be elastically clamped, not only can stable clamping be realized, but also damage to the aluminum foil due to excessive force can be prevented. In addition, because the aluminum foil is uniformly clamped, the aluminum foil can be prevented from being skewed in the flattening process.
As shown in fig. 7 and 9, the diagonal-clip detecting mechanism 4 further includes a moving frame 42 and a diagonal-clip assembly 43, the moving frame 42 is slidably disposed on one side of the vertical frame 1 in the horizontal direction, the diagonal-clip assembly 43 is slidably disposed in the moving frame 42 in the longitudinal direction, the detecting mechanism is disposed in the moving frame 42 and is located at the bottom of the diagonal-clip assembly 43, and the detecting end of the detecting mechanism is connected to the diagonal-clip assembly 43.
When the aluminum foil is unfolded, the movable frame 42 moves to one side of the vertical frame 1, the oblique clamp assembly 43 is prevented from affecting the unfolding motion of the unfolding mechanism 3, after the aluminum foil is unfolded, the movable frame 42 moves towards the vertical frame 1, the oblique clamp assembly 43 can obliquely clamp the aluminum foil, then the detection mechanism can detect the acting force required to be overcome when the oblique clamp assembly moves upwards, and then the oblique stretching performance of the aluminum foil is detected.
As shown in fig. 7 and 8, the diagonal clamp assembly 43 includes a lifting seat 431, a clamping frame 432, a clamping lever 433, a first link 434, a second link 435, an electric push rod 436, a third link 437, a moving block 438, a fourth link 439, and an adjusting screw 441; the elevating seat 431 is provided in the moving frame 42 to be longitudinally movable; one end of the clamping frame 432 is provided with a rotating pin which extends along the thickness direction of the aluminum foil, the rotating pin is in rotating connection with the lifting seat 431, the end part of the clamping frame 432 deflects relative to the lifting seat by taking the rotating pin as an axis, one side of the clamping frame 432, deviating from the moving frame, is provided with openings which can extend to two sides of the aluminum foil, two clamping rods 433 are arranged, and the two clamping rods 433 are symmetrically arranged in the openings of the clamping frame 432; the first link 434 and the second link 435 are disposed in parallel, one ends of the first link 434 and the second link 435 are rotatably connected to the open side of the holding frame 432, and the other ends of the first link 434 and the second link 435 are rotatably connected to the back side of the holding frame 433; the electric push rod 436 is arranged in the clamping frame 432, and an output shaft of the electric push rod 436 extends along the length direction of the clamping rod 433; the two third connecting rods 437 are arranged, two ends of the third connecting rod 437 are respectively and rotatably connected with the middle part of the second connecting rod 435 and the output shaft of the electric push rod 436, and when the output shaft of the electric push rod 436 makes telescopic motion, the third connecting rod 437 drives the second connecting rod 435 and the first connecting rod 434 to deflect relative to the opening of the clamping frame 432; the moving block 438 is slidably disposed in the elevating seat 431 in a horizontal direction; the two ends of the fourth connecting rod 439 are respectively and rotatably connected with the end part of the clamping rod 433 facing the lifting seat 431 and the moving block 438, when the moving block 438 moves along the horizontal direction, the end part of the fourth connecting rod 439 rotates to drive the clamping rod 433 to deflect by taking a rotating pin as a rotating point, and then drive the clamping frame 432 to deflect to realize angle adjustment; the adjusting screw 441 is rotatably disposed in the elevating seat 431, and the adjusting screw 441 penetrates the moving block 438 and is threadedly connected thereto.
When the aluminum foil is unfolded, the moving frame 42 moves towards the vertical frame 1, so that the two clamping rods 433 are respectively located at two sides of the aluminum foil, the electric push rod 436 is started, the output shaft of the electric push rod 436 drives the third connecting rod 437 to move, the first connecting rod 434 and the second connecting rod 435 are parallel and are rotationally connected with the clamping rods 433 and the clamping frame 432, the second connecting rod 435 drives the first connecting rod 434 and the second connecting rod 435 to deflect, the two clamping rods 433 can respectively abut against two sides of the aluminum foil, the aluminum foil is clamped, meanwhile, the moving block 438 can move in the lifting seat 431 by rotating the adjusting screw rod 441, one end of the moving block 438 drives the clamping frame 432 to rotate relative to a hinge point of the moving block through the fourth connecting rod 439, and then the angle of the clamping frame 432 is adjusted, so that the two clamping rods 433 can clamp the aluminum foil at different angles, the stress condition that the aluminum foil is stressed by different oblique stretching forces is detected, and the tensile strength of the aluminum foil is evaluated more comprehensively.
As an alternative embodiment of the application, scales arranged along the moving direction of the movable block 438 are marked on the lifting seat 431, and the deflection angle of the clamping frame 432 is fed back by overcoming the path of the movable block 438, so that the function of adjusting and observing the deflection angle of the aluminum foil of the clamping rod in real time is realized.
As shown in fig. 9, the detecting assembly 41 includes a fixed table 411, an air cylinder 412, and a pressure detecting sensor 413, the fixed table 411 being fixedly disposed at the bottom of the elevating seat 431; the cylinder 412 is arranged at the bottom end of the fixed table 411, and the output shaft of the cylinder 412 is opposite to the fixed table 411; the pressure detection sensor 413 is provided between the output shaft of the cylinder 412 and the elevating seat 431.
After the aluminum foil is clamped by the two clamping rods 433, the air cylinder 412 is started, and the output shaft of the air cylinder 412 can drive the lifting frame 14 to move upwards through the pressure detection sensor 413, so that the inclined clamp assembly 43 is driven to move upwards, the acting force required by the upward movement of the inclined clamp assembly 43 is detected through the pressure detection sensor 413, and the inclined stretching performance of the aluminum foil is detected.
According to the application, the aluminum foil is flattened and then stretched for detection, the flattening and the detection process are completely separated, the accuracy of the value initially detected by the sensor can be ensured, and the error is reduced.
The application of the aluminum foil multidirectional tensile strength detection device in lithium battery preparation adopts the aluminum foil multidirectional tensile strength detection device to detect the aluminum foil.
The tensile properties of aluminum foil are closely related to its structural stability and electrical conductivity in lithium batteries. If the tensile property of the aluminum foil is poor, the aluminum foil may deform or break due to stress in the charging and discharging process of the lithium battery, so that the problems of internal short circuit, liquid leakage and the like of the battery are caused, and the safety and the service life of the lithium battery are seriously affected.
Therefore, by detecting the tensile properties of the aluminum foil, the quality and reliability thereof can be evaluated, thereby ensuring the stability and long life of the lithium battery. Meanwhile, the method is also an important aspect of testing the lithium battery material, is beneficial to optimizing the performance and quality of the lithium battery material, improves the efficiency and safety of the lithium battery, and promotes the development of the lithium battery industry.
The foregoing examples merely illustrate one or more embodiments of the invention, which are described in greater detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of the invention should be assessed as that of the appended claims.
Claims (10)
1. The multi-directional tensile strength detection device for the aluminum foil is characterized by comprising a vertical frame, a positive clamping mechanism, an unfolding mechanism and an oblique clamping detection mechanism, wherein the positive clamping mechanism is arranged in the vertical frame and is provided with a first clamping groove extending along the width direction of the aluminum foil; the unfolding mechanism is arranged in the vertical frame in a longitudinally moving manner, and can upwards unfold the aluminum foil from the top end of the positive clamping mechanism; the oblique clamp detection mechanism is arranged on one side of the vertical frame and is provided with a second clamping groove for clamping the aluminum foil at an included angle with the horizontal direction, and a detection assembly for detecting acting force when the second clamping groove stretches the aluminum foil relative to the first clamping groove.
2. The device for detecting the multidirectional tensile strength of the aluminum foil according to claim 1, wherein the positive clamping mechanism comprises a vertical seat and a clamping mechanism, the clamping mechanism comprises a clamping block, a screw rod adjusting piece and a bidirectional screw rod, and the vertical seat is arranged in the vertical frame; the two clamping blocks are symmetrically and movably arranged in the vertical seat, and a first clamping groove is formed between the two clamping blocks; the screw rod adjusting piece comprises a moving plate, and the two moving plates are respectively arranged at the outer sides of the two clamping blocks in a moving way; the two-way screw rod penetrates through the two clamping blocks at the same time and is rotationally arranged on the vertical seat, and two ends of the two-way screw rod penetrate through the first moving plate and the second moving plate respectively and are in threaded connection with the first moving plate and the second moving plate; the center end of the bidirectional screw rod is provided with a grooved wheel, and the bottom end of the aluminum foil can be abutted on the annular groove of the grooved wheel.
3. The multi-directional tensile strength detecting device for aluminum foil according to claim 2, wherein a positioning rod extending in the thickness direction of the aluminum foil is arranged on the stand, the positioning rod penetrates through the moving plate in a sliding manner, a connecting cylinder penetrating through the clamping block in a sliding manner is arranged at one end of the moving plate, a limiting ring is arranged at the inner end of the connecting cylinder, the screw rod adjusting piece further comprises a screw rod elastic piece, and the screw rod elastic piece is arranged on the connecting cylinder and is located between the moving plate and the clamping block.
4. The multi-directional tensile strength detecting device for aluminum foil according to claim 2 or 3, wherein a lifting frame capable of moving longitudinally is arranged in the vertical frame, the unfolding mechanism is arranged on the lifting frame, the unfolding mechanism comprises an elastic frame and an abutting wheel which are symmetrically arranged, the elastic frame is arranged in the lifting frame, and the abutting wheel is rotatably arranged on the elastic frame; the outside at two grip block top is provided with the inclined plane, and in the initial state, the butt wheel is in butt elasticity on the inclined plane.
5. The multi-directional tensile strength testing device for aluminum foil according to claim 4, wherein a polish rod extending longitudinally, a lifting screw rod and a motor are arranged in the vertical frame, the polish rod penetrates through the lifting frame in a sliding mode, the lifting screw rod penetrates through the lifting frame and is in threaded connection with the lifting frame, the motor is arranged at the bottom end of the vertical frame, and an output shaft of the motor is coaxially connected with the lifting screw rod.
6. The multi-directional tensile strength testing device for aluminum foil according to claim 4, wherein a plurality of pin rods are arranged between the elastic frame and the lifting frame, and pin rod elastic pieces are arranged on the pin rods.
7. The multi-directional tensile strength testing apparatus of aluminum foil according to claim 1, wherein the diagonal-clamp testing mechanism further comprises a movable frame and a diagonal-clamp assembly, the movable frame is slidably disposed on one side of the vertical frame in a horizontal direction, the diagonal-clamp assembly is slidably disposed in the movable frame in a longitudinal direction, the testing mechanism is disposed in the movable frame and is located at a bottom of the diagonal-clamp assembly, and a testing end of the testing mechanism is connected with the diagonal-clamp assembly.
8. The multi-directional tensile strength testing device of aluminum foil according to claim 7, wherein the diagonal clamping assembly comprises a lifting seat, a clamping frame, a clamping rod, a first connecting rod, a second connecting rod, an electric push rod, a third connecting rod, a moving block, a fourth connecting rod and an adjusting screw rod; the lifting seat is arranged in the movable frame in a longitudinally movable manner; one end of the clamping frame is provided with a rotating pin, the rotating pin extends along the thickness direction of the aluminum foil, the rotating pin is rotationally connected with the lifting seat, the end part of the clamping frame deflects relative to the lifting seat by taking the rotating pin as an axis, one side of the clamping frame, deviating from the moving frame, is provided with two clamping rods which are symmetrically arranged in the openings of the clamping frame, and a second clamping groove is formed between the two clamping rods; the first connecting rod and the second connecting rod are arranged in parallel, one ends of the first connecting rod and the second connecting rod are rotationally connected with the opening side of the clamping frame, and the other ends of the first connecting rod and the second connecting rod are rotationally connected with the back side of the clamping rod; the electric push rod is arranged in the clamping frame, and an output shaft of the electric push rod extends along the length direction of the clamping rod; the two ends of the third connecting rod are respectively and rotatably connected with the middle part of the second connecting rod and the output shaft of the electric push rod, and when the output shaft of the electric push rod makes telescopic movement, the third connecting rod drives the second connecting rod and the first connecting rod to deflect relative to the opening of the clamping frame; the moving block is arranged in the lifting seat in a sliding manner along the horizontal direction; the two ends of the fourth connecting rod are respectively and rotatably connected with the end part of the clamping rod, which faces the lifting seat, and the moving block, when the moving block moves along the horizontal direction, the end part of the fourth connecting rod rotates, and the clamping rod is driven to deflect by taking the rotating pin as a rotating point; the adjusting screw rod is rotationally arranged in the lifting seat, penetrates through the moving block and is in threaded connection with the moving block.
9. The apparatus according to claim 8, wherein the detecting assembly comprises a fixing table fixedly disposed at the bottom of the elevating seat, a cylinder, and a pressure detecting sensor; the air cylinder is arranged at the bottom end of the fixed table, and the output shaft of the air cylinder is opposite to the fixed table; the pressure detection sensor is arranged between the output shaft of the air cylinder and the lifting seat.
10. Use of an aluminium foil multi-directional tensile strength detection device in lithium battery preparation, characterized in that the aluminium foil multi-directional tensile strength detection device according to any one of claims 1-3, 5-9 is used for detecting aluminium foil.
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| CN202410444304.0A CN118032512A (en) | 2024-04-15 | 2024-04-15 | Multidirectional tensile strength detection device for aluminum foil and application of multidirectional tensile strength detection device in lithium battery preparation |
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